compare-elim.c (equivalent_reg_at_start): Return NULL_RTX when returned register mode doesn't match original mode.
* compare-elim.c (equivalent_reg_at_start): Return NULL_RTX when returned register mode doesn't match original mode. From-SVN: r248009
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@ -1,7 +1,12 @@
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2017-05-13 Uros Bizjak <ubizjak@gmail.com>
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* compare-elim.c (equivalent_reg_at_start): Return NULL_RTX
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when returned register mode doesn't match original mode.
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2017-05-12 Jeff Law <law@redhat.com>
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2017-05-12 Jeff Law <law@redhat.com>
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Jakub Jelinek <jakub@redhat.com>
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Jakub Jelinek <jakub@redhat.com>
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* config/mn10300/mn10300.c (mn10300_match_ccmode): Fix where
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* config/mn10300/mn10300.c (mn10300_match_ccmode): Fix where
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we look for cc setter after the compare-elim changes.
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we look for cc setter after the compare-elim changes.
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* config/mn10300/mn10300.md (addsi3_flags): Fix order of patterns
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* config/mn10300/mn10300.md (addsi3_flags): Fix order of patterns
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within the vector to match what compare-elim now expects.
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within the vector to match what compare-elim now expects.
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@ -526,6 +526,7 @@ maybe_select_cc_mode (struct comparison *cmp, rtx a ATTRIBUTE_UNUSED,
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static rtx
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static rtx
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equivalent_reg_at_start (rtx reg, rtx_insn *end, rtx_insn *start)
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equivalent_reg_at_start (rtx reg, rtx_insn *end, rtx_insn *start)
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{
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{
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machine_mode orig_mode = GET_MODE (reg);
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rtx_insn *bb_head = BB_HEAD (BLOCK_FOR_INSN (end));
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rtx_insn *bb_head = BB_HEAD (BLOCK_FOR_INSN (end));
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for (rtx_insn *insn = PREV_INSN (end);
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for (rtx_insn *insn = PREV_INSN (end);
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@ -572,6 +573,9 @@ equivalent_reg_at_start (rtx reg, rtx_insn *end, rtx_insn *start)
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return NULL_RTX;
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return NULL_RTX;
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}
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}
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if (GET_MODE (reg) != orig_mode)
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return NULL_RTX;
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return reg;
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return reg;
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}
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}
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