diff options
| author | Eric Botcazou <ebotcazou@adacore.com> | 2016-09-01 07:55:00 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@adacore.com> | 2016-09-01 07:55:00 +0000 |
| commit | 0f6e7985c361d611ee3715820a67b84d215adcf5 (patch) | |
| tree | cc78efb36e5b46add19266de7658ff43b34e3d74 | |
| parent | fb6ff44893c7ca71df9db9580e6e820dfa227aac (diff) | |
* config/i386/i386.c (ix86_option_override_internal): Also disable the
STV pass if -mstackrealign is enabled.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@239916 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1cf6ef600dd..9f90359170e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-09-01 Eric Botcazou <ebotcazou@adacore.com> + + * config/i386/i386.c (ix86_option_override_internal): Also disable the + STV pass if -mstackrealign is enabled. + 2016-08-31 Ilya Verbin <iverbin@gmail.com> * config/i386/driver-i386.c (host_detect_local_cpu): Fix detection of diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index a229a738399..3ac115c64f7 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -5957,11 +5957,12 @@ ix86_option_override_internal (bool main_args_p, if (!(opts_set->x_target_flags & MASK_STV)) opts->x_target_flags |= MASK_STV; /* Disable STV if -mpreferred-stack-boundary={2,3} or - -mincoming-stack-boundary={2,3} - the needed + -mincoming-stack-boundary={2,3} or -mstackrealign - the needed stack realignment will be extra cost the pass doesn't take into account and the pass can't realign the stack. */ if (ix86_preferred_stack_boundary < 128 - || ix86_incoming_stack_boundary < 128) + || ix86_incoming_stack_boundary < 128 + || opts->x_ix86_force_align_arg_pointer) opts->x_target_flags &= ~MASK_STV; if (!ix86_tune_features[X86_TUNE_AVX256_UNALIGNED_LOAD_OPTIMAL] && !(opts_set->x_target_flags & MASK_AVX256_SPLIT_UNALIGNED_LOAD)) |