| commit | a24f02ffdb51513c05369f600dfff62329a6c8a1 | |
| author | Alan Modra <amodra@gmail.com> | |
| Mon, 18 Sep 2017 02:25:10 +0000 (18 11:55 +0930) | ||
| committer | Alan Modra <amodra@gcc.gnu.org> | |
| Mon, 18 Sep 2017 02:25:10 +0000 (18 11:55 +0930) | ||
| tree | 0b9349065d60fb914971689fffdd7e3e7c0de184 | treesnapshot (tar.gz zip) |
| parent | f26a27f300a72e89e4314adc95182f5433754033 | commitdiff |
[RS6000] PR81996, __builtin_return_address(0) fails
rs6000_return_addr assumes that the stack link is at frame+0, which is
true for count>0. For count==0, rs6000_return_addr is called with
frame==frame_pointer_rtx and the stack link is *not* at frame+0 if
-fstack-protector-all or -fsanitize=address because rs6000.h sets
FRAME_GROWS_DOWNWARD for those options.
PR target/81996
* gcc/config/rs6000/rs6000.c (rs6000_return_addr): Use
stack_pointer_rtx for count 0. Update comments. Break up
large rtl expression.
From-SVN: r252901
rs6000_return_addr assumes that the stack link is at frame+0, which is
true for count>0. For count==0, rs6000_return_addr is called with
frame==frame_pointer_rtx and the stack link is *not* at frame+0 if
-fstack-protector-all or -fsanitize=address because rs6000.h sets
FRAME_GROWS_DOWNWARD for those options.
PR target/81996
* gcc/config/rs6000/rs6000.c (rs6000_return_addr): Use
stack_pointer_rtx for count 0. Update comments. Break up
large rtl expression.
From-SVN: r252901
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