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Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 4c324f3..f69413a 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -1485,6 +1485,7 @@ combine_instructions (rtx_insn *f, unsigned int nregs) if ((set = single_set (temp)) != 0 && (note = find_reg_equal_equiv_note (temp)) != 0 && (note = XEXP (note, 0), GET_CODE (note)) != EXPR_LIST + && ! side_effects_p (SET_SRC (set)) /* Avoid using a register that may already been marked dead by an earlier instruction. */ && ! unmentioned_reg_p (note, SET_SRC (set)) |