(reg_dead_at_p): When scanning backwards, stop at BARRIER.

From-SVN: r9885

(reg_dead_at_p): When scanning backwards, stop at BARRIER.
From-SVN: r9885
60715d0b · Richard Kenner · 1cab3be1 · 60715d0b
Commit 60715d0b authored 29 years ago by Richard Kenner
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gcc/combine.c
+1 -1

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--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -10185,7 +10185,7 @@ reg_dead_at_p (reg, insn)

  /* Scan backwards until we find a REG_DEAD note, SET, CLOBBER, label, or
     beginning of function.  */
-  for (; insn && GET_CODE (insn) != CODE_LABEL;
+  for (; insn && GET_CODE (insn) != CODE_LABEL && GET_CODE (insn) != BARRIER;
       insn = prev_nonnote_insn (insn))
    {
      note_stores (PATTERN (insn), reg_dead_at_p_1);