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* gcse.c (try_replace_reg): Fix updating of note.
From-SVN: r70168
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@ -1,3 +1,7 @@
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2003-08-05 Josef Zlomek <zlomekj@suse.cz>
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* gcse.c (try_replace_reg): Fix updating of note.
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2003-08-04 Roger Sayle <roger@eyesopen.com>
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PR middle-end/11771
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10
gcc/gcse.c
10
gcc/gcse.c
@ -3849,6 +3849,11 @@ try_replace_reg (rtx from, rtx to, rtx insn)
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validate_change (insn, &SET_SRC (set), src, 0);
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}
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/* If there is already a NOTE, update the expression in it with our
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replacement. */
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if (note != 0)
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XEXP (note, 0) = simplify_replace_rtx (XEXP (note, 0), from, to);
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if (!success && set && reg_mentioned_p (from, SET_SRC (set)))
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{
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/* If above failed and this is a single set, try to simplify the source of
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@ -3869,11 +3874,6 @@ try_replace_reg (rtx from, rtx to, rtx insn)
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note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src));
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}
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/* If there is already a NOTE, update the expression in it with our
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replacement. */
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else if (note != 0)
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XEXP (note, 0) = simplify_replace_rtx (XEXP (note, 0), from, to);
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/* REG_EQUAL may get simplified into register.
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We don't allow that. Remove that note. This code ought
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not to happen, because previous code ought to synthesize
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