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Lines 3954-3962
try_replace_reg (from, to, insn)
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| 3954 |
&& validate_change (insn, &SET_SRC (set), src, 0)) |
3954 |
&& validate_change (insn, &SET_SRC (set), src, 0)) |
| 3955 |
success = 1; |
3955 |
success = 1; |
| 3956 |
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3956 |
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| 3957 |
/* If we've failed to do replacement, have a single SET, and don't already |
3957 |
/* If we've failed to do replacement, have a single SET, don't already |
| 3958 |
have a note, add a REG_EQUAL note to not lose information. */ |
3958 |
have a note, and have no special SET, add a REG_EQUAL note to not |
| 3959 |
if (!success && note == 0 && set != 0) |
3959 |
lose information. */ |
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3960 |
if (!success && note == 0 && set != 0 |
| 3961 |
&& GET_CODE (XEXP (set, 0)) != ZERO_EXTRACT |
| 3962 |
&& GET_CODE (XEXP (set, 0)) != SIGN_EXTRACT) |
| 3960 |
note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src)); |
3963 |
note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src)); |
| 3961 |
} |
3964 |
} |
| 3962 |
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3965 |
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