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rs6000.c (rs6000_emit_allocate_stack): Use correct alias set on MEM when saving stack pointer. 

2008-09-26  Pat Haugen  <pthaugen@us.ibm.com>

	* config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Use correct
	alias set on MEM when saving stack pointer.
	* config/rs6000/rs6000.md (allocate_stack): Likewise

From-SVN: r140693
This commit is contained in:
Pat Haugen 2008-09-26 14:31:57 +00:00 committed by Pat Haugen
parent 8f5730b997
commit 16044a800c
3 changed files with 42 additions and 4 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2008-09-26 Pat Haugen <pthaugen@us.ibm.com>
* config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Use correct
alias set on MEM when saving stack pointer.
* config/rs6000/rs6000.md (allocate_stack): Likewise
2008-09-26 Dorit Nuzman <dorit@il.ibm.com>
PR tree-optimization/37574

16
gcc/config/rs6000/rs6000.c
View File

@ -15438,6 +15438,8 @@ rs6000_emit_allocate_stack (HOST_WIDE_INT size, int copy_r12, int copy_r11)
if (TARGET_UPDATE)
{
rtx par, set, mem;
if (size > 32767)
{
/* Need a note here so that try_split doesn't get confused. */
@ -15453,13 +15455,25 @@ rs6000_emit_allocate_stack (HOST_WIDE_INT size, int copy_r12, int copy_r11)
todec, stack_reg)
: gen_movdi_di_update (stack_reg, stack_reg,
todec, stack_reg));
/* Since we didn't use gen_frame_mem to generate the MEM, grab
it now and set the alias set/attributes. The above gen_*_update
calls will generate a PARALLEL with the MEM set being the first
operation. */
par = PATTERN (insn);
gcc_assert (GET_CODE (par) == PARALLEL);
set = XVECEXP (par, 0, 0);
gcc_assert (GET_CODE (set) == SET);
mem = SET_DEST (set);
gcc_assert (MEM_P (mem));
MEM_NOTRAP_P (mem) = 1;
set_mem_alias_set (mem, get_frame_alias_set ());
}
else
{
insn = emit_insn (TARGET_32BIT
? gen_addsi3 (stack_reg, stack_reg, todec)
: gen_adddi3 (stack_reg, stack_reg, todec));
emit_move_insn (gen_rtx_MEM (Pmode, stack_reg),
emit_move_insn (gen_frame_mem (Pmode, stack_reg),
copy_r11
? gen_rtx_REG (Pmode, 11)
: gen_rtx_REG (Pmode, 12));

24
gcc/config/rs6000/rs6000.md
View File

@ -10340,14 +10340,32 @@
neg_op0 = GEN_INT (- INTVAL (operands[1]));
if (TARGET_UPDATE)
emit_insn ((* ((TARGET_32BIT) ? gen_movsi_update : gen_movdi_di_update))
(stack_pointer_rtx, stack_pointer_rtx, neg_op0, chain));
{
rtx insn, par, set, mem;
insn = emit_insn ((* ((TARGET_32BIT) ? gen_movsi_update
: gen_movdi_di_update))
(stack_pointer_rtx, stack_pointer_rtx, neg_op0,
chain));
/* Since we didn't use gen_frame_mem to generate the MEM, grab
it now and set the alias set/attributes. The above gen_*_update
calls will generate a PARALLEL with the MEM set being the first
operation. */
par = PATTERN (insn);
gcc_assert (GET_CODE (par) == PARALLEL);
set = XVECEXP (par, 0, 0);
gcc_assert (GET_CODE (set) == SET);
mem = SET_DEST (set);
gcc_assert (MEM_P (mem));
MEM_NOTRAP_P (mem) = 1;
set_mem_alias_set (mem, get_frame_alias_set ());
}
else
{
emit_insn ((* ((TARGET_32BIT) ? gen_addsi3 : gen_adddi3))
(stack_pointer_rtx, stack_pointer_rtx, neg_op0));
emit_move_insn (gen_rtx_MEM (Pmode, stack_pointer_rtx), chain);
emit_move_insn (gen_frame_mem (Pmode, stack_pointer_rtx), chain);
}
emit_move_insn (operands[0], virtual_stack_dynamic_rtx);