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re PR target/69140 (stack alignment + O1 breaks with Microsoft ABI)

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2016-01-07  Uros Bizjak  <ubizjak@gmail.com>

	PR target/69140
	* config/i386/i386.c (ix86_frame_pointer_required): Enable
	frame pointer for TARGET_64BIT_MS_ABI when stack is misaligned.

2016-01-07  Uros Bizjak  <ubizjak@gmail.com>

	Revert
	2016-01-06  Uros Bizjak  <ubizjak@gmail.com>

	PR target/69140
	* config/i386/i386.c (ix86_expand_prologue): Declare fs.sp_valid
	depending on frame_pointer_needed before remaining integer and SSE
	registers are saved.

From-SVN: r232140
This commit is contained in:
Uros Bizjak 2016-01-07 20:06:37 +01:00 committed by Uros Bizjak
parent 95918b49df
commit 0de71e1f51
2 changed files with 20 additions and 2 deletions
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16
gcc/ChangeLog
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@ -1,3 +1,19 @@
2016-01-07 Uros Bizjak <ubizjak@gmail.com>
PR target/69140
* config/i386/i386.c (ix86_frame_pointer_required): Enable
frame pointer for TARGET_64BIT_MS_ABI when stack is misaligned.
2016-01-07 Uros Bizjak <ubizjak@gmail.com>
Revert
2016-01-06 Uros Bizjak <ubizjak@gmail.com>
PR target/69140
* config/i386/i386.c (ix86_expand_prologue): Declare fs.sp_valid
depending on frame_pointer_needed before remaining integer and SSE
registers are saved.
2016-01-07 Sandra Loosemore <sandra@codesourcery.com>
PR 1078

6
gcc/config/i386/i386.c
View File

@ -10903,6 +10903,10 @@ ix86_frame_pointer_required (void)
if (TARGET_64BIT_MS_ABI && get_frame_size () > SEH_MAX_FRAME_SIZE)
return true;
/* SSE saves require frame-pointer when stack is misaligned. */
if (TARGET_64BIT_MS_ABI && ix86_incoming_stack_boundary < 128)
return true;
/* In ix86_option_override_internal, TARGET_OMIT_LEAF_FRAME_POINTER
turns off the frame pointer by default. Turn it back on now if
we've not got a leaf function. */
@ -13065,8 +13069,6 @@ ix86_expand_prologue (void)
m->fs.fp_valid = true;
}
m->fs.sp_valid = !frame_pointer_needed;
if (!int_registers_saved)
ix86_emit_save_regs_using_mov (frame.reg_save_offset);
if (!sse_registers_saved)