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| author | Martin Liska <mliska@suse.cz> | 2018-11-09 16:05:40 +0100 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2018-11-09 15:05:40 +0000 |
| commit | 47b840eb39c3f0b3ddb01e81a359b9926b13cf44 (patch) | |
| tree | 1153d06dcb763580bae79107afac2c1b0317586c /gcc/final.c | |
| parent | 2e14744fcd7820033b91c9516e22eb42b02b5290 (diff) | |
| download | gcc-47b840eb39c3f0b3ddb01e81a359b9926b13cf44.zip gcc-47b840eb39c3f0b3ddb01e81a359b9926b13cf44.tar.gz gcc-47b840eb39c3f0b3ddb01e81a359b9926b13cf44.tar.bz2 | |
Come up with the flag -fipa-stack-alignment.
2018-11-09 Martin Liska <mliska@suse.cz>
* common.opt: Add -fipa-stack-alignment flag.
* doc/invoke.texi: Document it.
* final.c (rest_of_clean_state): Guard stack
shrinking with flag.
2018-11-09 Martin Liska <mliska@suse.cz>
* gcc.target/i386/ipa-stack-alignment.c: New test.
From-SVN: r265970
Diffstat (limited to 'gcc/final.c')
| -rw-r--r-- | gcc/final.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/final.c b/gcc/final.c index 6e61f1e..0c1ac62 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -4890,7 +4890,8 @@ rest_of_clean_state (void) /* We can reduce stack alignment on call site only when we are sure that the function body just produced will be actually used in the final executable. */ - if (decl_binds_to_current_def_p (current_function_decl)) + if (flag_ipa_stack_alignment + && decl_binds_to_current_def_p (current_function_decl)) { unsigned int pref = crtl->preferred_stack_boundary; if (crtl->stack_alignment_needed > crtl->preferred_stack_boundary) |