[PATCH 1/5] x86: Add -mindirect-branch=
H.J. Lu
hjl.tools@gmail.com
Sun Jan 7 22:59:00 GMT 2018
Add -mindirect-branch= option to convert indirect call and jump to call
and return thunks. The default is 'keep', which keeps indirect call and
jump unmodified. 'thunk' converts indirect call and jump to call and
return thunk. 'thunk-inline' converts indirect call and jump to inlined
call and return thunk. 'thunk-extern' converts indirect call and jump to
external call and return thunk provided in a separate object file. You
can control this behavior for a specific function by using the function
attribute indirect_branch.
2 kinds of thunks are geneated. Memory thunk where the function address
is at the top of the stack:
__x86_indirect_thunk:
call L2
L1:
lfence
jmp L1
L2:
lea 8(%rsp), %rsp|lea 4(%esp), %esp
ret
Indirect jmp via memory, "jmp mem", is converted to
push memory
jmp __x86_indirect_thunk
Indirect call via memory, "call mem", is converted to
jmp L2
L1:
push [mem]
jmp __x86_indirect_thunk
L2:
call L1
Register thunk where the function address is in a register, reg:
__x86_indirect_thunk_reg:
call L2
L1:
lfence
jmp L1
L2:
movq %reg, (%rsp)|movl %reg, (%esp)
ret
where reg is one of (r|e)ax, (r|e)dx, (r|e)cx, (r|e)bx, (r|e)si, (r|e)di,
(r|e)bp, r8, r9, r10, r11, r12, r13, r14 and r15.
Indirect jmp via register, "jmp reg", is converted to
jmp __x86_indirect_thunk_reg
Indirect call via register, "call reg", is converted to
call __x86_indirect_thunk_reg
gcc/
* config/i386/i386-opts.h (indirect_branch): New.
* config/i386/i386-protos.h (ix86_output_indirect_jmp): Likewise.
* config/i386/i386.c (ix86_using_red_zone): Disallow red-zone
with local indirect jump when converting indirect call and jump.
(ix86_set_indirect_branch_type): New.
(ix86_set_current_function): Call ix86_set_indirect_branch_type.
(indirectlabelno): New.
(indirect_thunk_needed): Likewise.
(indirect_thunk_bnd_needed): Likewise.
(indirect_thunks_used): Likewise.
(indirect_thunks_bnd_used): Likewise.
(INDIRECT_LABEL): Likewise.
(indirect_thunk_name): Likewise.
(output_indirect_thunk): Likewise.
(output_indirect_thunk_function): Likewise.
(ix86_output_indirect_branch): Likewise.
(ix86_output_indirect_jmp): Likewise.
(ix86_code_end): Call output_indirect_thunk_function if needed.
(ix86_output_call_insn): Call ix86_output_indirect_branch if
needed.
(ix86_handle_fndecl_attribute): Handle indirect_branch.
(ix86_attribute_table): Add indirect_branch.
* config/i386/i386.h (machine_function): Add indirect_branch_type
and has_local_indirect_jump.
* config/i386/i386.md (indirect_jump): Set has_local_indirect_jump
to true.
(tablejump): Likewise.
(*indirect_jump): Use ix86_output_indirect_jmp.
(*tablejump_1): Likewise.
(simple_return_indirect_internal): Likewise.
* config/i386/i386.opt (mindirect-branch=): New option.
(indirect_branch): New.
(keep): Likewise.
(thunk): Likewise.
(thunk-inline): Likewise.
(thunk-extern): Likewise.
* doc/extend.texi: Document indirect_branch function attribute.
* doc/invoke.texi: Document -mindirect-branch= option.
gcc/testsuite/
* gcc.target/i386/indirect-thunk-1.c: New test.
* gcc.target/i386/indirect-thunk-2.c: Likewise.
* gcc.target/i386/indirect-thunk-3.c: Likewise.
* gcc.target/i386/indirect-thunk-4.c: Likewise.
* gcc.target/i386/indirect-thunk-5.c: Likewise.
* gcc.target/i386/indirect-thunk-6.c: Likewise.
* gcc.target/i386/indirect-thunk-7.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-8.c: Likewise.
* gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
* gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
* gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
* gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
* gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
---
gcc/config/i386/i386-opts.h | 8 +
gcc/config/i386/i386-protos.h | 1 +
gcc/config/i386/i386.c | 495 ++++++++++++++++++++-
gcc/config/i386/i386.h | 7 +
gcc/config/i386/i386.md | 8 +-
gcc/config/i386/i386.opt | 20 +
gcc/doc/extend.texi | 10 +
gcc/doc/invoke.texi | 14 +-
gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 19 +
gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 19 +
gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 20 +
gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 20 +
gcc/testsuite/gcc.target/i386/indirect-thunk-5.c | 16 +
gcc/testsuite/gcc.target/i386/indirect-thunk-6.c | 17 +
gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 43 ++
.../gcc.target/i386/indirect-thunk-attr-1.c | 22 +
.../gcc.target/i386/indirect-thunk-attr-2.c | 20 +
.../gcc.target/i386/indirect-thunk-attr-3.c | 21 +
.../gcc.target/i386/indirect-thunk-attr-4.c | 20 +
.../gcc.target/i386/indirect-thunk-attr-5.c | 22 +
.../gcc.target/i386/indirect-thunk-attr-6.c | 21 +
.../gcc.target/i386/indirect-thunk-attr-7.c | 44 ++
.../gcc.target/i386/indirect-thunk-attr-8.c | 41 ++
.../gcc.target/i386/indirect-thunk-bnd-1.c | 19 +
.../gcc.target/i386/indirect-thunk-bnd-2.c | 20 +
.../gcc.target/i386/indirect-thunk-bnd-3.c | 18 +
.../gcc.target/i386/indirect-thunk-bnd-4.c | 19 +
.../gcc.target/i386/indirect-thunk-extern-1.c | 19 +
.../gcc.target/i386/indirect-thunk-extern-2.c | 19 +
.../gcc.target/i386/indirect-thunk-extern-3.c | 20 +
.../gcc.target/i386/indirect-thunk-extern-4.c | 20 +
.../gcc.target/i386/indirect-thunk-extern-5.c | 16 +
.../gcc.target/i386/indirect-thunk-extern-6.c | 17 +
.../gcc.target/i386/indirect-thunk-extern-7.c | 43 ++
.../gcc.target/i386/indirect-thunk-inline-1.c | 18 +
.../gcc.target/i386/indirect-thunk-inline-2.c | 18 +
.../gcc.target/i386/indirect-thunk-inline-3.c | 19 +
.../gcc.target/i386/indirect-thunk-inline-4.c | 19 +
.../gcc.target/i386/indirect-thunk-inline-5.c | 15 +
.../gcc.target/i386/indirect-thunk-inline-6.c | 16 +
.../gcc.target/i386/indirect-thunk-inline-7.c | 42 ++
41 files changed, 1289 insertions(+), 16 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-5.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-6.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-3.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-4.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-5.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-6.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-5.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-6.c
create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
diff --git a/gcc/config/i386/i386-opts.h b/gcc/config/i386/i386-opts.h
index f245c1573cf..f14cbeee7a1 100644
--- a/gcc/config/i386/i386-opts.h
+++ b/gcc/config/i386/i386-opts.h
@@ -106,4 +106,12 @@ enum prefer_vector_width {
PVW_AVX512
};
+enum indirect_branch {
+ indirect_branch_unset = 0,
+ indirect_branch_keep,
+ indirect_branch_thunk,
+ indirect_branch_thunk_inline,
+ indirect_branch_thunk_extern
+};
+
#endif
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index 0e49652898c..bf11cc426f9 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -305,6 +305,7 @@ extern enum attr_cpu ix86_schedule;
#endif
extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op);
+extern const char * ix86_output_indirect_jmp (rtx call_op, bool ret_p);
extern bool ix86_operands_ok_for_move_multiple (rtx *operands, bool load,
machine_mode mode);
extern int ix86_min_insn_size (rtx_insn *);
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 8696f931806..ac4d1f62f50 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2724,12 +2724,19 @@ make_pass_insert_endbranch (gcc::context *ctxt)
return new pass_insert_endbranch (ctxt);
}
-/* Return true if a red-zone is in use. */
+/* Return true if a red-zone is in use. We can't use red-zone when
+ there are local indirect jumps, like "indirect_jump" or "tablejump",
+ which jumps to another place in the function, since "call" in the
+ indirect thunk pushes the return address onto stack, destroying
+ red-zone. */
bool
ix86_using_red_zone (void)
{
- return TARGET_RED_ZONE && !TARGET_64BIT_MS_ABI;
+ return (TARGET_RED_ZONE
+ && !TARGET_64BIT_MS_ABI
+ && (!cfun->machine->has_local_indirect_jump
+ || cfun->machine->indirect_branch_type == indirect_branch_keep));
}
/* Return a string that documents the current -m options. The caller is
@@ -5797,6 +5804,37 @@ ix86_set_func_type (tree fndecl)
}
}
+/* Set the indirect_branch_type field from the function FNDECL. */
+
+static void
+ix86_set_indirect_branch_type (tree fndecl)
+{
+ if (cfun->machine->indirect_branch_type == indirect_branch_unset)
+ {
+ tree attr = lookup_attribute ("indirect_branch",
+ DECL_ATTRIBUTES (fndecl));
+ if (attr != NULL)
+ {
+ tree args = TREE_VALUE (attr);
+ if (args == NULL)
+ gcc_unreachable ();
+ tree cst = TREE_VALUE (args);
+ if (strcmp (TREE_STRING_POINTER (cst), "keep") == 0)
+ cfun->machine->indirect_branch_type = indirect_branch_keep;
+ else if (strcmp (TREE_STRING_POINTER (cst), "thunk") == 0)
+ cfun->machine->indirect_branch_type = indirect_branch_thunk;
+ else if (strcmp (TREE_STRING_POINTER (cst), "thunk-inline") == 0)
+ cfun->machine->indirect_branch_type = indirect_branch_thunk_inline;
+ else if (strcmp (TREE_STRING_POINTER (cst), "thunk-extern") == 0)
+ cfun->machine->indirect_branch_type = indirect_branch_thunk_extern;
+ else
+ gcc_unreachable ();
+ }
+ else
+ cfun->machine->indirect_branch_type = ix86_indirect_branch;
+ }
+}
+
/* Establish appropriate back-end context for processing the function
FNDECL. The argument might be NULL to indicate processing at top
level, outside of any function scope. */
@@ -5812,7 +5850,10 @@ ix86_set_current_function (tree fndecl)
one is extern inline and one isn't. Call ix86_set_func_type
to set the func_type field. */
if (fndecl != NULL_TREE)
- ix86_set_func_type (fndecl);
+ {
+ ix86_set_func_type (fndecl);
+ ix86_set_indirect_branch_type (fndecl);
+ }
return;
}
@@ -5832,6 +5873,7 @@ ix86_set_current_function (tree fndecl)
}
ix86_set_func_type (fndecl);
+ ix86_set_indirect_branch_type (fndecl);
tree new_tree = DECL_FUNCTION_SPECIFIC_TARGET (fndecl);
if (new_tree == NULL_TREE)
@@ -10639,6 +10681,181 @@ ix86_setup_frame_addresses (void)
# endif
#endif
+static int indirectlabelno;
+static bool indirect_thunk_needed = false;
+static bool indirect_thunk_bnd_needed = false;
+
+static int indirect_thunks_used;
+static int indirect_thunks_bnd_used;
+
+#ifndef INDIRECT_LABEL
+# define INDIRECT_LABEL "LIND"
+#endif
+
+/* Fills in the label name that should be used for the indirect thunk. */
+
+static void
+indirect_thunk_name (char name[32], int regno, bool need_bnd_p)
+{
+ if (USE_HIDDEN_LINKONCE)
+ {
+ const char *bnd = need_bnd_p ? "_bnd" : "";
+ if (regno >= 0)
+ {
+ const char *reg_prefix;
+ if (LEGACY_INT_REGNO_P (regno))
+ reg_prefix = TARGET_64BIT ? "r" : "e";
+ else
+ reg_prefix = "";
+ sprintf (name, "__x86_indirect_thunk%s_%s%s",
+ bnd, reg_prefix, reg_names[regno]);
+ }
+ else
+ sprintf (name, "__x86_indirect_thunk%s", bnd);
+ }
+ else
+ {
+ if (regno >= 0)
+ {
+ if (need_bnd_p)
+ ASM_GENERATE_INTERNAL_LABEL (name, "LITBR", regno);
+ else
+ ASM_GENERATE_INTERNAL_LABEL (name, "LITR", regno);
+ }
+ else
+ {
+ if (need_bnd_p)
+ ASM_GENERATE_INTERNAL_LABEL (name, "LITB", 0);
+ else
+ ASM_GENERATE_INTERNAL_LABEL (name, "LIT", 0);
+ }
+ }
+}
+
+static void
+output_indirect_thunk (bool need_bnd_p, int regno)
+{
+ char indirectlabel1[32];
+ char indirectlabel2[32];
+
+ ASM_GENERATE_INTERNAL_LABEL (indirectlabel1, INDIRECT_LABEL,
+ indirectlabelno++);
+ ASM_GENERATE_INTERNAL_LABEL (indirectlabel2, INDIRECT_LABEL,
+ indirectlabelno++);
+
+ /* Call */
+ if (need_bnd_p)
+ fputs ("\tbnd call\t", asm_out_file);
+ else
+ fputs ("\tcall\t", asm_out_file);
+ assemble_name_raw (asm_out_file, indirectlabel2);
+ fputc ('\n', asm_out_file);
+
+ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel1);
+
+ /* lfence . */
+ fprintf (asm_out_file, "\tlfence\n");
+
+ /* Jump. */
+ fputs ("\tjmp\t", asm_out_file);
+ assemble_name_raw (asm_out_file, indirectlabel1);
+ fputc ('\n', asm_out_file);
+
+ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel2);
+
+ if (regno >= 0)
+ {
+ /* MOV. */
+ rtx xops[2];
+ xops[0] = gen_rtx_MEM (word_mode, stack_pointer_rtx);
+ xops[1] = gen_rtx_REG (word_mode, regno);
+ output_asm_insn ("mov\t{%1, %0|%0, %1}", xops);
+ }
+ else
+ {
+ /* LEA. */
+ rtx xops[2];
+ xops[0] = stack_pointer_rtx;
+ xops[1] = plus_constant (Pmode, stack_pointer_rtx, UNITS_PER_WORD);
+ output_asm_insn ("lea\t{%E1, %0|%0, %E1}", xops);
+ }
+
+ if (need_bnd_p)
+ fputs ("\tbnd ret\n", asm_out_file);
+ else
+ fputs ("\tret\n", asm_out_file);
+}
+
+static void
+output_indirect_thunk_function (bool need_bnd_p, int regno)
+{
+ char name[32];
+ tree decl;
+
+ /* Create __x86_indirect_thunk/__x86_indirect_thunk_bnd. */
+ indirect_thunk_name (name, regno, need_bnd_p);
+ decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL,
+ get_identifier (name),
+ build_function_type_list (void_type_node, NULL_TREE));
+ DECL_RESULT (decl) = build_decl (BUILTINS_LOCATION, RESULT_DECL,
+ NULL_TREE, void_type_node);
+ TREE_PUBLIC (decl) = 1;
+ TREE_STATIC (decl) = 1;
+ DECL_IGNORED_P (decl) = 1;
+
+#if TARGET_MACHO
+ if (TARGET_MACHO)
+ {
+ switch_to_section (darwin_sections[picbase_thunk_section]);
+ fputs ("\t.weak_definition\t", asm_out_file);
+ assemble_name (asm_out_file, name);
+ fputs ("\n\t.private_extern\t", asm_out_file);
+ assemble_name (asm_out_file, name);
+ putc ('\n', asm_out_file);
+ ASM_OUTPUT_LABEL (asm_out_file, name);
+ DECL_WEAK (decl) = 1;
+ }
+ else
+#endif
+ if (USE_HIDDEN_LINKONCE)
+ {
+ cgraph_node::create (decl)->set_comdat_group (DECL_ASSEMBLER_NAME (decl));
+
+ targetm.asm_out.unique_section (decl, 0);
+ switch_to_section (get_named_section (decl, NULL, 0));
+
+ targetm.asm_out.globalize_label (asm_out_file, name);
+ fputs ("\t.hidden\t", asm_out_file);
+ assemble_name (asm_out_file, name);
+ putc ('\n', asm_out_file);
+ ASM_DECLARE_FUNCTION_NAME (asm_out_file, name, decl);
+ }
+ else
+ {
+ switch_to_section (text_section);
+ ASM_OUTPUT_LABEL (asm_out_file, name);
+ }
+
+ DECL_INITIAL (decl) = make_node (BLOCK);
+ current_function_decl = decl;
+ allocate_struct_function (decl, false);
+ init_function_start (decl);
+ /* We're about to hide the function body from callees of final_* by
+ emitting it directly; tell them we're a thunk, if they care. */
+ cfun->is_thunk = true;
+ first_function_block_is_cold = false;
+ /* Make sure unwind info is emitted for the thunk if needed. */
+ final_start_function (emit_barrier (), asm_out_file, 1);
+
+ output_indirect_thunk (need_bnd_p, regno);
+
+ final_end_function ();
+ init_insn_lengths ();
+ free_after_compilation (cfun);
+ set_cfun (NULL);
+ current_function_decl = NULL;
+}
+
static int pic_labels_used;
/* Fills in the label name that should be used for a pc thunk for
@@ -10665,11 +10882,32 @@ ix86_code_end (void)
rtx xops[2];
int regno;
+ if (indirect_thunk_needed)
+ output_indirect_thunk_function (false, -1);
+ if (indirect_thunk_bnd_needed)
+ output_indirect_thunk_function (true, -1);
+
+ for (regno = FIRST_REX_INT_REG; regno <= LAST_REX_INT_REG; regno++)
+ {
+ int i = regno - FIRST_REX_INT_REG + LAST_INT_REG + 1;
+ if ((indirect_thunks_used & (1 << i)))
+ output_indirect_thunk_function (false, regno);
+
+ if ((indirect_thunks_bnd_used & (1 << i)))
+ output_indirect_thunk_function (true, regno);
+ }
+
for (regno = FIRST_INT_REG; regno <= LAST_INT_REG; regno++)
{
char name[32];
tree decl;
+ if ((indirect_thunks_used & (1 << regno)))
+ output_indirect_thunk_function (false, regno);
+
+ if ((indirect_thunks_bnd_used & (1 << regno)))
+ output_indirect_thunk_function (true, regno);
+
if (!(pic_labels_used & (1 << regno)))
continue;
@@ -28119,12 +28357,182 @@ ix86_nopic_noplt_attribute_p (rtx call_op)
return false;
}
+static void
+ix86_output_indirect_branch (rtx call_op, const char *xasm,
+ bool sibcall_p)
+{
+ char thunk_name_buf[32];
+ char *thunk_name;
+ char push_buf[64];
+ bool need_bnd_p = ix86_bnd_prefixed_insn_p (current_output_insn);
+ int regno;
+
+ if (REG_P (call_op))
+ regno = REGNO (call_op);
+ else
+ regno = -1;
+
+ if (cfun->machine->indirect_branch_type
+ != indirect_branch_thunk_inline)
+ {
+ if (cfun->machine->indirect_branch_type == indirect_branch_thunk)
+ {
+ if (regno >= 0)
+ {
+ int i = regno;
+ if (i >= FIRST_REX_INT_REG)
+ i -= (FIRST_REX_INT_REG - LAST_INT_REG - 1);
+ if (need_bnd_p)
+ indirect_thunks_bnd_used |= 1 << i;
+ else
+ indirect_thunks_used |= 1 << i;
+ }
+ else
+ {
+ if (need_bnd_p)
+ indirect_thunk_bnd_needed = true;
+ else
+ indirect_thunk_needed = true;
+ }
+ }
+ indirect_thunk_name (thunk_name_buf, regno, need_bnd_p);
+ thunk_name = thunk_name_buf;
+ }
+ else
+ thunk_name = NULL;
+
+ snprintf (push_buf, sizeof (push_buf), "push{%c}\t%s",
+ TARGET_64BIT ? 'q' : 'l', xasm);
+
+ if (sibcall_p)
+ {
+ if (regno < 0)
+ output_asm_insn (push_buf, &call_op);
+ if (thunk_name != NULL)
+ {
+ if (need_bnd_p)
+ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
+ else
+ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
+ }
+ else
+ output_indirect_thunk (need_bnd_p, regno);
+ }
+ else
+ {
+ if (regno >= 0 && thunk_name != NULL)
+ {
+ if (need_bnd_p)
+ fprintf (asm_out_file, "\tbnd call\t%s\n", thunk_name);
+ else
+ fprintf (asm_out_file, "\tcall\t%s\n", thunk_name);
+ return;
+ }
+
+ char indirectlabel1[32];
+ char indirectlabel2[32];
+
+ ASM_GENERATE_INTERNAL_LABEL (indirectlabel1,
+ INDIRECT_LABEL,
+ indirectlabelno++);
+ ASM_GENERATE_INTERNAL_LABEL (indirectlabel2,
+ INDIRECT_LABEL,
+ indirectlabelno++);
+
+ /* Jump. */
+ if (need_bnd_p)
+ fputs ("\tbnd jmp\t", asm_out_file);
+ else
+ fputs ("\tjmp\t", asm_out_file);
+ assemble_name_raw (asm_out_file, indirectlabel2);
+ fputc ('\n', asm_out_file);
+
+ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel1);
+
+ if (MEM_P (call_op))
+ {
+ struct ix86_address parts;
+ rtx addr = XEXP (call_op, 0);
+ if (ix86_decompose_address (addr, &parts)
+ && parts.base == stack_pointer_rtx)
+ {
+ /* Since call will adjust stack by -UNITS_PER_WORD,
+ we must convert "disp(stack, index, scale)" to
+ "disp+UNITS_PER_WORD(stack, index, scale)". */
+ if (parts.index)
+ {
+ addr = gen_rtx_MULT (Pmode, parts.index,
+ GEN_INT (parts.scale));
+ addr = gen_rtx_PLUS (Pmode, stack_pointer_rtx,
+ addr);
+ }
+ else
+ addr = stack_pointer_rtx;
+
+ rtx disp;
+ if (parts.disp != NULL_RTX)
+ disp = plus_constant (Pmode, parts.disp,
+ UNITS_PER_WORD);
+ else
+ disp = GEN_INT (UNITS_PER_WORD);
+
+ addr = gen_rtx_PLUS (Pmode, addr, disp);
+ call_op = gen_rtx_MEM (GET_MODE (call_op), addr);
+ }
+ }
+
+ if (regno < 0)
+ output_asm_insn (push_buf, &call_op);
+
+ if (thunk_name != NULL)
+ {
+ if (need_bnd_p)
+ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
+ else
+ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
+ }
+ else
+ output_indirect_thunk (need_bnd_p, regno);
+
+ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel2);
+
+ /* Call. */
+ if (need_bnd_p)
+ fputs ("\tbnd call\t", asm_out_file);
+ else
+ fputs ("\tcall\t", asm_out_file);
+ assemble_name_raw (asm_out_file, indirectlabel1);
+ fputc ('\n', asm_out_file);
+ }
+}
+
+const char *
+ix86_output_indirect_jmp (rtx call_op, bool ret_p)
+{
+ if (cfun->machine->indirect_branch_type != indirect_branch_keep)
+ {
+ /* We can't have red-zone if this isn't a function return since
+ "call" in the indirect thunk pushes the return address onto
+ stack, destroying red-zone. */
+ if (!ret_p && ix86_red_zone_size != 0)
+ gcc_unreachable ();
+
+ ix86_output_indirect_branch (call_op, "%0", true);
+ return "";
+ }
+ else
+ return "%!jmp\t%A0";
+}
+
/* Output the assembly for a call instruction. */
const char *
ix86_output_call_insn (rtx_insn *insn, rtx call_op)
{
bool direct_p = constant_call_address_operand (call_op, VOIDmode);
+ bool output_indirect_p
+ = (!TARGET_SEH
+ && cfun->machine->indirect_branch_type != indirect_branch_keep);
bool seh_nop_p = false;
const char *xasm;
@@ -28134,10 +28542,21 @@ ix86_output_call_insn (rtx_insn *insn, rtx call_op)
{
if (ix86_nopic_noplt_attribute_p (call_op))
{
+ direct_p = false;
if (TARGET_64BIT)
- xasm = "%!jmp\t{*%p0@GOTPCREL(%%rip)|[QWORD PTR %p0@GOTPCREL[rip]]}";
+ {
+ if (output_indirect_p)
+ xasm = "{%p0@GOTPCREL(%%rip)|[QWORD PTR %p0@GOTPCREL[rip]]}";
+ else
+ xasm = "%!jmp\t{*%p0@GOTPCREL(%%rip)|[QWORD PTR %p0@GOTPCREL[rip]]}";
+ }
else
- xasm = "%!jmp\t{*%p0@GOT|[DWORD PTR %p0@GOT]}";
+ {
+ if (output_indirect_p)
+ xasm = "{%p0@GOT|[DWORD PTR %p0@GOT]}";
+ else
+ xasm = "%!jmp\t{*%p0@GOT|[DWORD PTR %p0@GOT]}";
+ }
}
else
xasm = "%!jmp\t%P0";
@@ -28147,9 +28566,17 @@ ix86_output_call_insn (rtx_insn *insn, rtx call_op)
else if (TARGET_SEH)
xasm = "%!rex.W jmp\t%A0";
else
- xasm = "%!jmp\t%A0";
+ {
+ if (output_indirect_p)
+ xasm = "%0";
+ else
+ xasm = "%!jmp\t%A0";
+ }
- output_asm_insn (xasm, &call_op);
+ if (output_indirect_p && !direct_p)
+ ix86_output_indirect_branch (call_op, xasm, true);
+ else
+ output_asm_insn (xasm, &call_op);
return "";
}
@@ -28187,18 +28614,37 @@ ix86_output_call_insn (rtx_insn *insn, rtx call_op)
{
if (ix86_nopic_noplt_attribute_p (call_op))
{
+ direct_p = false;
if (TARGET_64BIT)
- xasm = "%!call\t{*%p0@GOTPCREL(%%rip)|[QWORD PTR %p0@GOTPCREL[rip]]}";
+ {
+ if (output_indirect_p)
+ xasm = "{%p0@GOTPCREL(%%rip)|[QWORD PTR %p0@GOTPCREL[rip]]}";
+ else
+ xasm = "%!call\t{*%p0@GOTPCREL(%%rip)|[QWORD PTR %p0@GOTPCREL[rip]]}";
+ }
else
- xasm = "%!call\t{*%p0@GOT|[DWORD PTR %p0@GOT]}";
+ {
+ if (output_indirect_p)
+ xasm = "{%p0@GOT|[DWORD PTR %p0@GOT]}";
+ else
+ xasm = "%!call\t{*%p0@GOT|[DWORD PTR %p0@GOT]}";
+ }
}
else
xasm = "%!call\t%P0";
}
else
- xasm = "%!call\t%A0";
+ {
+ if (output_indirect_p)
+ xasm = "%0";
+ else
+ xasm = "%!call\t%A0";
+ }
- output_asm_insn (xasm, &call_op);
+ if (output_indirect_p && !direct_p)
+ ix86_output_indirect_branch (call_op, xasm, false);
+ else
+ output_asm_insn (xasm, &call_op);
if (seh_nop_p)
return "nop";
@@ -40356,7 +40802,7 @@ ix86_handle_struct_attribute (tree *node, tree name, tree, int,
}
static tree
-ix86_handle_fndecl_attribute (tree *node, tree name, tree, int,
+ix86_handle_fndecl_attribute (tree *node, tree name, tree args, int,
bool *no_add_attrs)
{
if (TREE_CODE (*node) != FUNCTION_DECL)
@@ -40365,6 +40811,29 @@ ix86_handle_fndecl_attribute (tree *node, tree name, tree, int,
name);
*no_add_attrs = true;
}
+
+ if (is_attribute_p ("indirect_branch", name))
+ {
+ tree cst = TREE_VALUE (args);
+ if (TREE_CODE (cst) != STRING_CST)
+ {
+ warning (OPT_Wattributes,
+ "%qE attribute requires a string constant argument",
+ name);
+ *no_add_attrs = true;
+ }
+ else if (strcmp (TREE_STRING_POINTER (cst), "keep") != 0
+ && strcmp (TREE_STRING_POINTER (cst), "thunk") != 0
+ && strcmp (TREE_STRING_POINTER (cst), "thunk-inline") != 0
+ && strcmp (TREE_STRING_POINTER (cst), "thunk-extern") != 0)
+ {
+ warning (OPT_Wattributes,
+ "argument to %qE attribute is not "
+ "(keep|thunk|thunk-inline|thunk-extern)", name);
+ *no_add_attrs = true;
+ }
+ }
+
return NULL_TREE;
}
@@ -44777,6 +45246,8 @@ static const struct attribute_spec ix86_attribute_table[] =
ix86_handle_no_caller_saved_registers_attribute, NULL },
{ "naked", 0, 0, true, false, false, false,
ix86_handle_fndecl_attribute, NULL },
+ { "indirect_branch", 1, 1, true, false, false, false,
+ ix86_handle_fndecl_attribute, NULL },
/* End element. */
{ NULL, 0, 0, false, false, false, false, NULL, NULL }
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 93b7a2c5915..51a920298a4 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -2568,6 +2568,13 @@ struct GTY(()) machine_function {
/* Function type. */
ENUM_BITFIELD(function_type) func_type : 2;
+ /* How to generate indirec branch. */
+ ENUM_BITFIELD(indirect_branch) indirect_branch_type : 3;
+
+ /* If true, the current function has local indirect jumps, like
+ "indirect_jump" or "tablejump". */
+ BOOL_BITFIELD has_local_indirect_jump : 1;
+
/* If true, the current function is a function specified with
the "interrupt" or "no_caller_saved_registers" attribute. */
BOOL_BITFIELD no_caller_saved_registers : 1;
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 3f587806407..a7573c468ae 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -12313,12 +12313,13 @@
{
if (TARGET_X32)
operands[0] = convert_memory_address (word_mode, operands[0]);
+ cfun->machine->has_local_indirect_jump = true;
})
(define_insn "*indirect_jump"
[(set (pc) (match_operand:W 0 "indirect_branch_operand" "rBw"))]
""
- "%!jmp\t%A0"
+ "* return ix86_output_indirect_jmp (operands[0], false);"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")
(set_attr "maybe_prefix_bnd" "1")])
@@ -12362,13 +12363,14 @@
if (TARGET_X32)
operands[0] = convert_memory_address (word_mode, operands[0]);
+ cfun->machine->has_local_indirect_jump = true;
})
(define_insn "*tablejump_1"
[(set (pc) (match_operand:W 0 "indirect_branch_operand" "rBw"))
(use (label_ref (match_operand 1)))]
""
- "%!jmp\t%A0"
+ "* return ix86_output_indirect_jmp (operands[0], false);"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")
(set_attr "maybe_prefix_bnd" "1")])
@@ -13097,7 +13099,7 @@
[(simple_return)
(use (match_operand 0 "register_operand" "r"))]
"reload_completed"
- "%!jmp\t%A0"
+ "* return ix86_output_indirect_jmp (operands[0], true);"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")
(set_attr "maybe_prefix_bnd" "1")])
diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt
index 09aaa97c2fc..22c806206e4 100644
--- a/gcc/config/i386/i386.opt
+++ b/gcc/config/i386/i386.opt
@@ -1021,3 +1021,23 @@ indirect jump.
mforce-indirect-call
Target Report Var(flag_force_indirect_call) Init(0)
Make all function calls indirect.
+
+mindirect-branch=
+Target Report RejectNegative Joined Enum(indirect_branch) Var(ix86_indirect_branch) Init(indirect_branch_keep)
+Convert indirect call and jump.
+
+Enum
+Name(indirect_branch) Type(enum indirect_branch)
+Known indirect branch choices (for use with the -mindirect-branch= option):
+
+EnumValue
+Enum(indirect_branch) String(keep) Value(indirect_branch_keep)
+
+EnumValue
+Enum(indirect_branch) String(thunk) Value(indirect_branch_thunk)
+
+EnumValue
+Enum(indirect_branch) String(thunk-inline) Value(indirect_branch_thunk_inline)
+
+EnumValue
+Enum(indirect_branch) String(thunk-extern) Value(indirect_branch_thunk_extern)
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 5f0f4b86cb2..6e48d4108a2 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -5735,6 +5735,16 @@ Specify which floating-point unit to use. You must specify the
@code{target("fpmath=sse+387")} because the comma would separate
different options.
+@item indirect_branch("@var{choice}")
+@cindex @code{indirect_branch} function attribute, x86
+On x86 targets, the @code{indirect_branch} attribute causes the compiler
+to convert indirect call and jump with @var{choice}. @samp{keep}
+keeps indirect call and jump unmodified. @samp{thunk} converts indirect
+call and jump to call and return thunk. @samp{thunk-inline} converts
+indirect call and jump to inlined call and return thunk.
+@samp{thunk-extern} converts indirect call and jump to external call
+and return thunk provided in a separate object file.
+
@item nocf_check
@cindex @code{nocf_check} function attribute
The @code{nocf_check} attribute on a function is used to inform the
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index c6025382dbb..46461d1ada3 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1226,7 +1226,8 @@ See RS/6000 and PowerPC Options.
-mstack-protector-guard-reg=@var{reg} @gol
-mstack-protector-guard-offset=@var{offset} @gol
-mstack-protector-guard-symbol=@var{symbol} -mmitigate-rop @gol
--mgeneral-regs-only -mcall-ms2sysv-xlogues}
+-mgeneral-regs-only -mcall-ms2sysv-xlogues @gol
+-mindirect-branch=@var{choice}}
@emph{x86 Windows Options}
@gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll @gol
@@ -26764,6 +26765,17 @@ Generate code that uses only the general-purpose registers. This
prevents the compiler from using floating-point, vector, mask and bound
registers.
+@item -mindirect-branch=@var{choice}
+@opindex -mindirect-branch
+Convert indirect call and jump with @var{choice}. The default is
+@samp{keep}, which keeps indirect call and jump unmodified.
+@samp{thunk} converts indirect call and jump to call and return thunk.
+@samp{thunk-inline} converts indirect call and jump to inlined call
+and return thunk. @samp{thunk-extern} converts indirect call and jump
+to external call and return thunk provided in a separate object file.
+You can control this behavior for a specific function by using the
+function attribute @code{indirect_branch}. @xref{Function Attributes}.
+
@end table
These @samp{-m} switches are supported in addition to the above
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
new file mode 100644
index 00000000000..08827448325
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
new file mode 100644
index 00000000000..1344b6bc0e9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
new file mode 100644
index 00000000000..dcc9ef75df6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
new file mode 100644
index 00000000000..2502860b6e6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-5.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-5.c
new file mode 100644
index 00000000000..58c81d16316
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-5.c
@@ -0,0 +1,16 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-O2 -fpic -fno-plt -mindirect-branch=thunk" } */
+
+extern void bar (void);
+
+void
+foo (void)
+{
+ bar ();
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-6.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-6.c
new file mode 100644
index 00000000000..b4c528a5b30
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-6.c
@@ -0,0 +1,17 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-O2 -fpic -fno-plt -mindirect-branch=thunk" } */
+
+extern void bar (void);
+
+int
+foo (void)
+{
+ bar ();
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
new file mode 100644
index 00000000000..4553ef0b622
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
@@ -0,0 +1,43 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
+
+void func0 (void);
+void func1 (void);
+void func2 (void);
+void func3 (void);
+void func4 (void);
+void func4 (void);
+void func5 (void);
+
+void
+bar (int i)
+{
+ switch (i)
+ {
+ default:
+ func0 ();
+ break;
+ case 1:
+ func1 ();
+ break;
+ case 2:
+ func2 ();
+ break;
+ case 3:
+ func3 ();
+ break;
+ case 4:
+ func4 ();
+ break;
+ case 5:
+ func5 ();
+ break;
+ }
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
new file mode 100644
index 00000000000..b8e9851c76f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+extern void male_indirect_jump (long)
+ __attribute__ ((indirect_branch("thunk")));
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
new file mode 100644
index 00000000000..1d6d18c2aba
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+__attribute__ ((indirect_branch("thunk")))
+void
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
new file mode 100644
index 00000000000..af167840b81
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+extern int male_indirect_jump (long)
+ __attribute__ ((indirect_branch("thunk-inline")));
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
new file mode 100644
index 00000000000..146124894a0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+__attribute__ ((indirect_branch("thunk-inline")))
+int
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
new file mode 100644
index 00000000000..0833606046b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+extern int male_indirect_jump (long)
+ __attribute__ ((indirect_branch("thunk-extern")));
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
new file mode 100644
index 00000000000..2eba0fbd9b2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+__attribute__ ((indirect_branch("thunk-extern")))
+int
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
new file mode 100644
index 00000000000..f58427eae11
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
@@ -0,0 +1,44 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-pic" } */
+
+void func0 (void);
+void func1 (void);
+void func2 (void);
+void func3 (void);
+void func4 (void);
+void func4 (void);
+void func5 (void);
+
+__attribute__ ((indirect_branch("thunk-extern")))
+void
+bar (int i)
+{
+ switch (i)
+ {
+ default:
+ func0 ();
+ break;
+ case 1:
+ func1 ();
+ break;
+ case 2:
+ func2 ();
+ break;
+ case 3:
+ func3 ();
+ break;
+ case 4:
+ func4 ();
+ break;
+ case 5:
+ func5 ();
+ break;
+ }
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
new file mode 100644
index 00000000000..6960fa0bbfb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
@@ -0,0 +1,41 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
+
+void func0 (void);
+void func1 (void);
+void func2 (void);
+void func3 (void);
+void func4 (void);
+void func4 (void);
+void func5 (void);
+
+__attribute__ ((indirect_branch("keep")))
+void
+bar (int i)
+{
+ switch (i)
+ {
+ default:
+ func0 ();
+ break;
+ case 1:
+ func1 ();
+ break;
+ case 2:
+ func2 ();
+ break;
+ case 3:
+ func3 ();
+ break;
+ case 4:
+ func4 ();
+ break;
+ case 5:
+ func5 ();
+ break;
+ }
+}
+
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
new file mode 100644
index 00000000000..21b25ec5bbf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
@@ -0,0 +1,19 @@
+/* { dg-do compile { target { ! x32 } } } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
+
+void (*dispatch) (char *);
+char buf[10];
+
+void
+foo (void)
+{
+ dispatch (buf);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "pushq\[ \t\]%rax" { target x32 } } } */
+/* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "bnd call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "bnd ret" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
new file mode 100644
index 00000000000..7bf7e6a1095
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
@@ -0,0 +1,20 @@
+/* { dg-do compile { target { ! x32 } } } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
+
+void (*dispatch) (char *);
+char buf[10];
+
+int
+foo (void)
+{
+ dispatch (buf);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "pushq\[ \t\]%rax" { target x32 } } } */
+/* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
+/* { dg-final { scan-assembler "bnd jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "bnd call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "bnd ret" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-3.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-3.c
new file mode 100644
index 00000000000..14c60f232db
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-3.c
@@ -0,0 +1,18 @@
+/* { dg-do compile { target { *-*-linux* && { ! x32 } } } } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fpic -fno-plt" } */
+
+void bar (char *);
+char buf[10];
+
+void
+foo (void)
+{
+ bar (buf);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "bnd call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "bnd ret" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-4.c
new file mode 100644
index 00000000000..4fd6f360801
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-4.c
@@ -0,0 +1,19 @@
+/* { dg-do compile { target { *-*-linux* && { ! x32 } } } } */
+/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fpic -fno-plt" } */
+
+void bar (char *);
+char buf[10];
+
+int
+foo (void)
+{
+ bar (buf);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler "bnd jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-times "bnd call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler "bnd ret" } } */
+/* { dg-final { scan-assembler {\tlfence} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
new file mode 100644
index 00000000000..49f27b49465
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
new file mode 100644
index 00000000000..a1e3eb6fc74
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
new file mode 100644
index 00000000000..395634e7e5c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
new file mode 100644
index 00000000000..fd3f63379a1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-5.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-5.c
new file mode 100644
index 00000000000..ba2f92b6f34
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-5.c
@@ -0,0 +1,16 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-O2 -fpic -fno-plt -mindirect-branch=thunk-extern" } */
+
+extern void bar (void);
+
+void
+foo (void)
+{
+ bar ();
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-6.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-6.c
new file mode 100644
index 00000000000..0c5a2d472c6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-6.c
@@ -0,0 +1,17 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-O2 -fpic -fno-plt -mindirect-branch=thunk-extern" } */
+
+extern void bar (void);
+
+int
+foo (void)
+{
+ bar ();
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
new file mode 100644
index 00000000000..665252327aa
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
@@ -0,0 +1,43 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
+
+void func0 (void);
+void func1 (void);
+void func2 (void);
+void func3 (void);
+void func4 (void);
+void func4 (void);
+void func5 (void);
+
+void
+bar (int i)
+{
+ switch (i)
+ {
+ default:
+ func0 ();
+ break;
+ case 1:
+ func1 ();
+ break;
+ case 2:
+ func2 ();
+ break;
+ case 3:
+ func3 ();
+ break;
+ case 4:
+ func4 ();
+ break;
+ case 5:
+ func5 ();
+ break;
+ }
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
new file mode 100644
index 00000000000..3ace8d1b031
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
new file mode 100644
index 00000000000..6c97b96f1f2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+void
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
new file mode 100644
index 00000000000..8f6759cbf06
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch;
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch(offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
new file mode 100644
index 00000000000..b07d08cab0f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
+
+typedef void (*dispatch_t)(long offset);
+
+dispatch_t dispatch[256];
+
+int
+male_indirect_jump (long offset)
+{
+ dispatch[offset](offset);
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-5.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-5.c
new file mode 100644
index 00000000000..10794886b1b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-5.c
@@ -0,0 +1,15 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-O2 -fpic -fno-plt -mindirect-branch=thunk-inline" } */
+
+extern void bar (void);
+
+void
+foo (void)
+{
+ bar ();
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-6.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-6.c
new file mode 100644
index 00000000000..a26ec4b06ed
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-6.c
@@ -0,0 +1,16 @@
+/* { dg-do compile { target *-*-linux* } } */
+/* { dg-options "-O2 -fpic -fno-plt -mindirect-branch=thunk-inline" } */
+
+extern void bar (void);
+
+int
+foo (void)
+{
+ bar ();
+ return 0;
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*bar@GOT" } } */
+/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
new file mode 100644
index 00000000000..77253af17c6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
@@ -0,0 +1,42 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
+
+void func0 (void);
+void func1 (void);
+void func2 (void);
+void func3 (void);
+void func4 (void);
+void func4 (void);
+void func5 (void);
+
+void
+bar (int i)
+{
+ switch (i)
+ {
+ default:
+ func0 ();
+ break;
+ case 1:
+ func1 ();
+ break;
+ case 2:
+ func2 ();
+ break;
+ case 3:
+ func3 ();
+ break;
+ case 4:
+ func4 ();
+ break;
+ case 5:
+ func5 ();
+ break;
+ }
+}
+
+/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
+/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
--
2.14.3
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