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| author | Jakub Jelinek <jakub@redhat.com> | 2019-05-23 13:18:41 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-05-23 13:18:41 +0200 |
| commit | 32d941139e8144662e0dc182d64e3f3f9df89ad4 (patch) | |
| tree | 9f7ff5de4ec982ed84825ad775a05322c634493e | |
| parent | 2b8235ea99f231c0840e7375d79c28cec5a525a4 (diff) | |
| download | gcc-32d941139e8144662e0dc182d64e3f3f9df89ad4.zip gcc-32d941139e8144662e0dc182d64e3f3f9df89ad4.tar.gz gcc-32d941139e8144662e0dc182d64e3f3f9df89ad4.tar.bz2 | |
re PR target/90568 (stack protector should use cmp or sub, not xor, to allow macro-fusion on x86)
PR target/90568
* config/i386/i386.md (stack_protect_test_<mode>): Use sub instead
of xor.
From-SVN: r271552
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2ccb803..e49c758 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-05-23 Jakub Jelinek <jakub@redhat.com> + + PR target/90568 + * config/i386/i386.md (stack_protect_test_<mode>): Use sub instead + of xor. + 2019-05-23 Martin Liska <mliska@suse.cz> PR sanitizer/90570 diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index da5163d..3fd11e2 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -19521,7 +19521,7 @@ UNSPEC_SP_TEST)) (clobber (match_scratch:PTR 3 "=&r"))] "" - "mov{<imodesuffix>}\t{%1, %3|%3, %1}\;xor{<imodesuffix>}\t{%2, %3|%3, %2}" + "mov{<imodesuffix>}\t{%1, %3|%3, %1}\;sub{<imodesuffix>}\t{%2, %3|%3, %2}" [(set_attr "type" "multi")]) (define_insn "sse4_2_crc32<mode>" |