From: Uros Bizjak Date: Thu, 9 Oct 2014 06:36:08 +0000 (+0200) Subject: re PR rtl-optimization/57003 (gcc breaks -O2 optimization with Wine(64) - links/info... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=58a41b43b5f02c67544569c508424efa4115ad9f;p=gcc.git 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 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7884a8a4c54..85bc3619af5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-10-09 Uros Bizjak + + 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 PR bootstrap/63432. diff --git a/gcc/regcprop.c b/gcc/regcprop.c index 3297721df39..01135dea179 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. */