From d8b7ec41b57618f6a7e9d02942ac36b309cbeac9 Mon Sep 17 00:00:00 2001
From: Roger Sayle <roger@eyesopen.com>
Date: Sun, 4 Apr 2004 21:44:41 +0000
Subject: [PATCH] cse.c (cse_insn): Correct usage of simplify_replace_rtx when
updating the REG_EQUAL note on an...
* cse.c (cse_insn): Correct usage of simplify_replace_rtx when
updating the REG_EQUAL note on an insn's libcall_insn.
From-SVN: r80400
---
gcc/ChangeLog | 5 +++++
gcc/cse.c | 9 +++++++--
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index acf8454abf12..fcfbfdccee9b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-04-04 Roger Sayle <roger@eyesopen.com>
+
+ * cse.c (cse_insn): Correct usage of simplify_replace_rtx when
+ updating the REG_EQUAL note on an insn's libcall_insn.
+
2004-04-04 Roger Sayle <roger@eyesopen.com>
* df.h: Tidy up whitespace in the definitions of the DF_ flags.
diff --git a/gcc/cse.c b/gcc/cse.c
index 38f6ef060046..0a7281ecc426 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -5402,8 +5402,13 @@ cse_insn (rtx insn, rtx libcall_insn)
&& (GET_CODE (sets[i].orig_src) == REG
|| GET_CODE (sets[i].orig_src) == SUBREG
|| GET_CODE (sets[i].orig_src) == MEM))
- simplify_replace_rtx (REG_NOTES (libcall_insn),
- sets[i].orig_src, copy_rtx (new));
+ {
+ rtx note = find_reg_equal_equiv_note (libcall_insn);
+ if (note != 0)
+ XEXP (note, 0) = simplify_replace_rtx (XEXP (note, 0),
+ sets[i].orig_src,
+ copy_rtx (new));
+ }
/* The result of apply_change_group can be ignored; see
canon_reg. */
--
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