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| author | Uros Bizjak <ubizjak@gmail.com> | 2014-10-09 08:36:08 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2014-10-09 08:36:08 +0200 |
| commit | 58a41b43b5f02c67544569c508424efa4115ad9f (patch) | |
| tree | 8d7714ba1da9723e50658b6346ccd9c795c01dea | |
| parent | c4d91f2eacf4676d3231e687165a7a35e15b2a17 (diff) | |
| download | gcc-58a41b43b5f02c67544569c508424efa4115ad9f.zip gcc-58a41b43b5f02c67544569c508424efa4115ad9f.tar.gz gcc-58a41b43b5f02c67544569c508424efa4115ad9f.tar.bz2 | |
re PR rtl-optimization/57003 (gcc breaks -O2 optimization with Wine(64) - links/info/bisect of commits included)
PR rtl-optimization/57003
* regcprop.c (copyprop_hardreg_forward_1): If ksvd.ignore_set_reg,
also check CALL_INSN_FUNCTION_USAGE for clobbers again after
killing regs_invalidated_by_call.
From-SVN: r216026
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/regcprop.c | 12 |
2 files changed, 18 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7884a8a..85bc361 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-10-09 Uros Bizjak <ubizjak@gmail.com> + + PR rtl-optimization/57003 + * regcprop.c (copyprop_hardreg_forward_1): If ksvd.ignore_set_reg, + also check CALL_INSN_FUNCTION_USAGE for clobbers again after + killing regs_invalidated_by_call. + 2014-10-08 Teresa Johnson <tejohnson@google.com> PR bootstrap/63432. diff --git a/gcc/regcprop.c b/gcc/regcprop.c index 3297721..01135de 100644 --- a/gcc/regcprop.c +++ b/gcc/regcprop.c @@ -1029,7 +1029,17 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) but instead among CLOBBERs on the CALL_INSN, we could wrongly assume the value in it is still live. */ if (ksvd.ignore_set_reg) - note_stores (PATTERN (insn), kill_clobbered_value, vd); + { + note_stores (PATTERN (insn), kill_clobbered_value, vd); + for (exp = CALL_INSN_FUNCTION_USAGE (insn); + exp; + exp = XEXP (exp, 1)) + { + rtx x = XEXP (exp, 0); + if (GET_CODE (x) == CLOBBER) + kill_value (SET_DEST (x), vd); + } + } } /* Notice stores. */ |