From: rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 12 Jan 2004 09:20:24 +0000 (+0000)
Subject: 	* combine.c (combine_simplify_rtx): Don't pass VOIDmode to
X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=commitdiff_plain;h=115addd6f75b9a540c34a162f151b190e8dd7165

	* combine.c (combine_simplify_rtx): Don't pass VOIDmode to
	simplify_unary_operation if the operand has a known mode.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@75709 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dd94d58cf98..1f23cbdf868 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-01-12  Richard Sandiford  <rsandifo@redhat.com>
+
+	* combine.c (combine_simplify_rtx): Don't pass VOIDmode to
+	simplify_unary_operation if the operand has a known mode.
+
 2004-01-12  Hartmut Penner  <hpenner@de.ibm.com>
 
 	* gcc/config/rs6000/rs6000.c (word_offset_memref_operand): New
diff --git a/gcc/combine.c b/gcc/combine.c
index 2c92d247aa8..db139fe9bbb 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -3690,6 +3690,8 @@ combine_simplify_rtx (rtx x, enum machine_mode op0_mode, int last,
   switch (GET_RTX_CLASS (code))
     {
     case '1':
+      if (op0_mode == VOIDmode)
+	op0_mode = GET_MODE (XEXP (x, 0));
       temp = simplify_unary_operation (code, mode, XEXP (x, 0), op0_mode);
       break;
     case '<':