diff options
| author | Eric Botcazou <ebotcazou@adacore.com> | 2014-02-12 08:49:55 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2014-02-12 08:49:55 +0000 |
| commit | 62b0355332d6a102667074df1abf5e1a015809c6 (patch) | |
| tree | 978e4087ca2bdbd4afd96388ab25a7caa8853cda /gcc/combine.c | |
| parent | 6cfbc02310939961fdb3ca8db7d3fc0db42162d8 (diff) | |
| download | gcc-62b0355332d6a102667074df1abf5e1a015809c6.zip gcc-62b0355332d6a102667074df1abf5e1a015809c6.tar.gz gcc-62b0355332d6a102667074df1abf5e1a015809c6.tar.bz2 | |
re PR rtl-optimization/60116 (wrong code at -Os on x86_64-linux-gnu in 32-bit mode)
PR rtl-optimization/60116
* combine.c (try_combine): Also remove dangling REG_DEAD notes on the
other_insn once the combination has been validated.
From-SVN: r207713
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index fd4294b..f6e1dbc 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3894,14 +3894,15 @@ try_combine (rtx i3, rtx i2, rtx i1, rtx i0, int *new_direct_jump_p, PATTERN (undobuf.other_insn) = other_pat; - /* If any of the notes in OTHER_INSN were REG_UNUSED, ensure that they - are still valid. Then add any non-duplicate notes added by - recog_for_combine. */ + /* If any of the notes in OTHER_INSN were REG_DEAD or REG_UNUSED, + ensure that they are still valid. Then add any non-duplicate + notes added by recog_for_combine. */ for (note = REG_NOTES (undobuf.other_insn); note; note = next) { next = XEXP (note, 1); - if (REG_NOTE_KIND (note) == REG_UNUSED + if ((REG_NOTE_KIND (note) == REG_DEAD + || REG_NOTE_KIND (note) == REG_UNUSED) && ! reg_set_p (XEXP (note, 0), PATTERN (undobuf.other_insn))) remove_note (undobuf.other_insn, note); } |