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[09/nn] Add a fixed_size_mode_pod class
- From: Richard Sandiford <richard dot sandiford at linaro dot org>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 23 Oct 2017 12:22:53 +0100
- Subject: [09/nn] Add a fixed_size_mode_pod class
- Authentication-results: sourceware.org; auth=none
- References: <87wp3mxgir.fsf@linaro.org>
This patch adds a POD version of fixed_size_mode. The only current use
is for storing the __builtin_apply and __builtin_result register modes,
which were made fixed_size_modes by the previous patch.
2017-10-23 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* coretypes.h (fixed_size_mode): Declare.
(fixed_size_mode_pod): New typedef.
* builtins.h (target_builtins::x_apply_args_mode)
(target_builtins::x_apply_result_mode): Change type to
fixed_size_mode_pod.
* builtins.c (apply_args_size, apply_result_size, result_vector)
(expand_builtin_apply_args_1, expand_builtin_apply)
(expand_builtin_return): Update accordingly.
Index: gcc/coretypes.h
===================================================================
--- gcc/coretypes.h 2017-09-11 17:10:58.656085547 +0100
+++ gcc/coretypes.h 2017-10-23 11:42:57.592545063 +0100
@@ -59,6 +59,7 @@ typedef const struct rtx_def *const_rtx;
class scalar_int_mode;
class scalar_float_mode;
class complex_mode;
+class fixed_size_mode;
template<typename> class opt_mode;
typedef opt_mode<scalar_mode> opt_scalar_mode;
typedef opt_mode<scalar_int_mode> opt_scalar_int_mode;
@@ -66,6 +67,7 @@ typedef opt_mode<scalar_float_mode> opt_
template<typename> class pod_mode;
typedef pod_mode<scalar_mode> scalar_mode_pod;
typedef pod_mode<scalar_int_mode> scalar_int_mode_pod;
+typedef pod_mode<fixed_size_mode> fixed_size_mode_pod;
/* Subclasses of rtx_def, using indentation to show the class
hierarchy, along with the relevant invariant.
Index: gcc/builtins.h
===================================================================
--- gcc/builtins.h 2017-08-30 12:18:46.602740973 +0100
+++ gcc/builtins.h 2017-10-23 11:42:57.592545063 +0100
@@ -29,14 +29,14 @@ struct target_builtins {
the register is not used for calling a function. If the machine
has register windows, this gives only the outbound registers.
INCOMING_REGNO gives the corresponding inbound register. */
- machine_mode x_apply_args_mode[FIRST_PSEUDO_REGISTER];
+ fixed_size_mode_pod x_apply_args_mode[FIRST_PSEUDO_REGISTER];
/* For each register that may be used for returning values, this gives
a mode used to copy the register's value. VOIDmode indicates the
register is not used for returning values. If the machine has
register windows, this gives only the outbound registers.
INCOMING_REGNO gives the corresponding inbound register. */
- machine_mode x_apply_result_mode[FIRST_PSEUDO_REGISTER];
+ fixed_size_mode_pod x_apply_result_mode[FIRST_PSEUDO_REGISTER];
};
extern struct target_builtins default_target_builtins;
Index: gcc/builtins.c
===================================================================
--- gcc/builtins.c 2017-10-23 11:41:23.140260335 +0100
+++ gcc/builtins.c 2017-10-23 11:42:57.592545063 +0100
@@ -1358,7 +1358,6 @@ apply_args_size (void)
static int size = -1;
int align;
unsigned int regno;
- machine_mode mode;
/* The values computed by this function never change. */
if (size < 0)
@@ -1374,7 +1373,7 @@ apply_args_size (void)
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (FUNCTION_ARG_REGNO_P (regno))
{
- mode = targetm.calls.get_raw_arg_mode (regno);
+ fixed_size_mode mode = targetm.calls.get_raw_arg_mode (regno);
gcc_assert (mode != VOIDmode);
@@ -1386,7 +1385,7 @@ apply_args_size (void)
}
else
{
- apply_args_mode[regno] = VOIDmode;
+ apply_args_mode[regno] = as_a <fixed_size_mode> (VOIDmode);
}
}
return size;
@@ -1400,7 +1399,6 @@ apply_result_size (void)
{
static int size = -1;
int align, regno;
- machine_mode mode;
/* The values computed by this function never change. */
if (size < 0)
@@ -1410,7 +1408,7 @@ apply_result_size (void)
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (targetm.calls.function_value_regno_p (regno))
{
- mode = targetm.calls.get_raw_result_mode (regno);
+ fixed_size_mode mode = targetm.calls.get_raw_result_mode (regno);
gcc_assert (mode != VOIDmode);
@@ -1421,7 +1419,7 @@ apply_result_size (void)
apply_result_mode[regno] = mode;
}
else
- apply_result_mode[regno] = VOIDmode;
+ apply_result_mode[regno] = as_a <fixed_size_mode> (VOIDmode);
/* Allow targets that use untyped_call and untyped_return to override
the size so that machine-specific information can be stored here. */
@@ -1440,7 +1438,7 @@ apply_result_size (void)
result_vector (int savep, rtx result)
{
int regno, size, align, nelts;
- machine_mode mode;
+ fixed_size_mode mode;
rtx reg, mem;
rtx *savevec = XALLOCAVEC (rtx, FIRST_PSEUDO_REGISTER);
@@ -1469,7 +1467,7 @@ expand_builtin_apply_args_1 (void)
{
rtx registers, tem;
int size, align, regno;
- machine_mode mode;
+ fixed_size_mode mode;
rtx struct_incoming_value = targetm.calls.struct_value_rtx (cfun ? TREE_TYPE (cfun->decl) : 0, 1);
/* Create a block where the arg-pointer, structure value address,
@@ -1573,7 +1571,7 @@ expand_builtin_apply_args (void)
expand_builtin_apply (rtx function, rtx arguments, rtx argsize)
{
int size, align, regno;
- machine_mode mode;
+ fixed_size_mode mode;
rtx incoming_args, result, reg, dest, src;
rtx_call_insn *call_insn;
rtx old_stack_level = 0;
@@ -1734,7 +1732,7 @@ expand_builtin_apply (rtx function, rtx
expand_builtin_return (rtx result)
{
int size, align, regno;
- machine_mode mode;
+ fixed_size_mode mode;
rtx reg;
rtx_insn *call_fusage = 0;