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| author | Uros Bizjak <ubizjak@gmail.com> | 2016-01-07 20:06:37 +0100 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2016-01-07 20:06:37 +0100 |
| commit | 0de71e1f517fd3f97f072d400991e10879d2867c (patch) | |
| tree | 4ce55c3f5ae33f163113a02da759af19e383525a /gcc/config | |
| parent | 95918b49dff7ec678d663838ec68fcb53994cf0e (diff) | |
| download | gcc-0de71e1f517fd3f97f072d400991e10879d2867c.zip gcc-0de71e1f517fd3f97f072d400991e10879d2867c.tar.gz gcc-0de71e1f517fd3f97f072d400991e10879d2867c.tar.bz2 | |
re PR target/69140 (stack alignment + O1 breaks with Microsoft ABI)
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
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/i386/i386.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 9c3fa70..aac0847 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -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) |