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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-09-14 08:52:27 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-09-24 09:00:51 -0700 |
| commit | f0baed1fb6cd6ed7c7a3dce1f555d3f72b1575a5 (patch) | |
| tree | f234dacd8a985fee4c59ebfe096e98faf4f51be9 /gcc/config/i386 | |
| parent | 71c83e108de7b54f604eeebefbc9e97672310ca7 (diff) | |
| download | gcc-f0baed1fb6cd6ed7c7a3dce1f555d3f72b1575a5.tar.gz | |
rtl_data: Add sp_is_clobbered_by_asm
Add sp_is_clobbered_by_asm to rtl_data to inform backends that the stack
pointer is clobbered by asm statement.
gcc/
PR target/97032
* cfgexpand.c (asm_clobber_reg_kind): Set sp_is_clobbered_by_asm
to true if the stack pointer is clobbered by asm statement.
* emit-rtl.h (rtl_data): Add sp_is_clobbered_by_asm.
* config/i386/i386.c (ix86_get_drap_rtx): Set need_drap to true
if the stack pointer is clobbered by asm statement.
gcc/testsuite/
PR target/97032
* gcc.target/i386/pr97032.c: New test.
(cherry picked from commit 453a20c65722719b9e2d84339f215e7ec87692dc)
Diffstat (limited to 'gcc/config/i386')
| -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 6e03abf6b47..839b9929f6d 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -6965,10 +6965,12 @@ ix86_update_stack_boundary (void) static rtx ix86_get_drap_rtx (void) { - /* We must use DRAP if there are outgoing arguments on stack and + /* We must use DRAP if there are outgoing arguments on stack or + the stack pointer register is clobbered by asm statment and ACCUMULATE_OUTGOING_ARGS is false. */ if (ix86_force_drap - || (cfun->machine->outgoing_args_on_stack + || ((cfun->machine->outgoing_args_on_stack + || crtl->sp_is_clobbered_by_asm) && !ACCUMULATE_OUTGOING_ARGS)) crtl->need_drap = true; |