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| author | H.J. Lu <hjl@gcc.gnu.org> | 2008-08-06 08:29:37 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2008-08-06 08:29:37 -0700 |
| commit | e94a448f66945080611074fc7859bea46e6fc688 (patch) | |
| tree | c3135360ae4b38adaeeb7da6a53d15035ce4a458 /gcc/cfgexpand.c | |
| parent | e088f04bdb2331f7ec6ba0faa4eb2c64982e56c3 (diff) | |
| download | gcc-e94a448f66945080611074fc7859bea46e6fc688.zip gcc-e94a448f66945080611074fc7859bea46e6fc688.tar.gz gcc-e94a448f66945080611074fc7859bea46e6fc688.tar.bz2 | |
re PR middle-end/37009 (No need to align stack when incoming stack is aligned)
gcc/
2008-08-06 H.J. Lu <hongjiu.lu@intel.com>
PR middle-end/37009
* cfgexpand.c (expand_stack_alignment): Check parm_stack_boundary
for incoming stack boundary.
* function.c (assign_parm_find_entry_rtl): Update
parm_stack_boundary.
* function.h (rtl_data): Add parm_stack_boundary.
* config/i386/i386.c (ix86_finalize_stack_realign_flags): Check
parm_stack_boundary for incoming stack boundary.
gcc/testsuite/
2008-08-06 H.J. Lu <hongjiu.lu@intel.com>
PR middle-end/37009
* gcc.dg/torture/stackalign/alloca-2.c: New.
* gcc.dg/torture/stackalign/alloca-3.c: Likewise.
* gcc.dg/torture/stackalign/alloca-4.c: Likewise.
* gcc.dg/torture/stackalign/vararg-3.c: Likewise.
* gcc.target/i386/incoming-1.c: Likewise.
* gcc.target/i386/incoming-2.c: Likewise.
* gcc.target/i386/incoming-3.c: Likewise.
* gcc.target/i386/incoming-4.c: Likewise.
* gcc.target/i386/incoming-5.c: Likewise.
From-SVN: r138806
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index a943eff..8d1e5d2 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -2184,7 +2184,7 @@ static void expand_stack_alignment (void) { rtx drap_rtx; - unsigned int preferred_stack_boundary; + unsigned int preferred_stack_boundary, incoming_stack_boundary; if (! SUPPORTS_STACK_ALIGNMENT) return; @@ -2215,8 +2215,15 @@ expand_stack_alignment (void) if (preferred_stack_boundary > crtl->stack_alignment_needed) crtl->stack_alignment_needed = preferred_stack_boundary; + /* The incoming stack frame has to be aligned at least at + parm_stack_boundary. */ + if (crtl->parm_stack_boundary > INCOMING_STACK_BOUNDARY) + incoming_stack_boundary = crtl->parm_stack_boundary; + else + incoming_stack_boundary = INCOMING_STACK_BOUNDARY; + crtl->stack_realign_needed - = INCOMING_STACK_BOUNDARY < crtl->stack_alignment_estimated; + = incoming_stack_boundary < crtl->stack_alignment_estimated; crtl->stack_realign_tried = crtl->stack_realign_needed; crtl->stack_realign_processed = true; |