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| author | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2015-11-11 14:22:43 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2015-11-11 14:22:43 +0000 |
| commit | 7700cd858ff97a257d6f48b0d079780f445821da (patch) | |
| tree | 65037ebab2d96259aa483e1bd38a87a27b451d5b /gcc/ira.c | |
| parent | 0bf5130af0d1c19855f244ae874180ed28f1cb3e (diff) | |
| download | gcc-7700cd858ff97a257d6f48b0d079780f445821da.tar.gz | |
re PR target/67265 ([x86] 'asm' operand has impossible constraints with -fstack-check)
PR target/67265
* ira.c (ira_setup_eliminable_regset): Do not necessarily create the
frame pointer for stack checking if non-call exceptions aren't used.
* config/i386/i386.c (ix86_finalize_stack_realign_flags): Likewise.
From-SVN: r230168
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gcc/ira.c b/gcc/ira.c index e16d062e35a..97edf8c4816 100644 --- a/gcc/ira.c +++ b/gcc/ira.c @@ -2259,9 +2259,12 @@ ira_setup_eliminable_regset (void) frame_pointer_needed = (! flag_omit_frame_pointer || (cfun->calls_alloca && EXIT_IGNORE_STACK) - /* We need the frame pointer to catch stack overflow exceptions - if the stack pointer is moving. */ - || (flag_stack_check && STACK_CHECK_MOVING_SP) + /* We need the frame pointer to catch stack overflow exceptions if + the stack pointer is moving (as for the alloca case just above). */ + || (STACK_CHECK_MOVING_SP + && flag_stack_check + && flag_exceptions + && cfun->can_throw_non_call_exceptions) || crtl->accesses_prior_frames || (SUPPORTS_STACK_ALIGNMENT && crtl->stack_realign_needed) /* We need a frame pointer for all Cilk Plus functions that use |