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[091/nnn] poly_int: emit_single_push_insn_1
- From: Richard Sandiford <richard dot sandiford at linaro dot org>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 23 Oct 2017 18:36:42 +0100
- Subject: [091/nnn] poly_int: emit_single_push_insn_1
- Authentication-results: sourceware.org; auth=none
- References: <871sltvm7r.fsf@linaro.org>
This patch makes emit_single_push_insn_1 cope with polynomial mode sizes.
2017-10-23 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* expr.c (emit_single_push_insn_1): Treat mode sizes as polynomial.
Use plus_constant instead of gen_rtx_PLUS.
Index: gcc/expr.c
===================================================================
--- gcc/expr.c 2017-10-23 17:25:35.142976454 +0100
+++ gcc/expr.c 2017-10-23 17:25:37.064907370 +0100
@@ -4141,9 +4141,6 @@ emit_single_push_insn_1 (machine_mode mo
access to type. */
else if (targetm.calls.function_arg_padding (mode, type) == PAD_DOWNWARD)
{
- unsigned padding_size = rounded_size - GET_MODE_SIZE (mode);
- HOST_WIDE_INT offset;
-
emit_move_insn (stack_pointer_rtx,
expand_binop (Pmode,
STACK_GROWS_DOWNWARD ? sub_optab
@@ -4152,31 +4149,27 @@ emit_single_push_insn_1 (machine_mode mo
gen_int_mode (rounded_size, Pmode),
NULL_RTX, 0, OPTAB_LIB_WIDEN));
- offset = (HOST_WIDE_INT) padding_size;
+ poly_int64 offset = rounded_size - GET_MODE_SIZE (mode);
if (STACK_GROWS_DOWNWARD && STACK_PUSH_CODE == POST_DEC)
/* We have already decremented the stack pointer, so get the
previous value. */
- offset += (HOST_WIDE_INT) rounded_size;
+ offset += rounded_size;
if (!STACK_GROWS_DOWNWARD && STACK_PUSH_CODE == POST_INC)
/* We have already incremented the stack pointer, so get the
previous value. */
- offset -= (HOST_WIDE_INT) rounded_size;
+ offset -= rounded_size;
- dest_addr = gen_rtx_PLUS (Pmode, stack_pointer_rtx,
- gen_int_mode (offset, Pmode));
+ dest_addr = plus_constant (Pmode, stack_pointer_rtx, offset);
}
else
{
if (STACK_GROWS_DOWNWARD)
/* ??? This seems wrong if STACK_PUSH_CODE == POST_DEC. */
- dest_addr = gen_rtx_PLUS (Pmode, stack_pointer_rtx,
- gen_int_mode (-(HOST_WIDE_INT) rounded_size,
- Pmode));
+ dest_addr = plus_constant (Pmode, stack_pointer_rtx, -rounded_size);
else
/* ??? This seems wrong if STACK_PUSH_CODE == POST_INC. */
- dest_addr = gen_rtx_PLUS (Pmode, stack_pointer_rtx,
- gen_int_mode (rounded_size, Pmode));
+ dest_addr = plus_constant (Pmode, stack_pointer_rtx, rounded_size);
dest_addr = gen_rtx_PRE_MODIFY (Pmode, stack_pointer_rtx, dest_addr);
}