From 011ea7b8e3578f64304596a5bdf4ddba44534e86 Mon Sep 17 00:00:00 2001
From: sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 26 Sep 2004 14:55:37 +0000
Subject: 	PR middle-end/17151 	* combine.c (force_to_mode): Remove
 dubious early return test that 	inhibits further optimization.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@88129 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/combine.c | 5 -----
 1 file changed, 5 deletions(-)

(limited to 'gcc/combine.c')

diff --git a/gcc/combine.c b/gcc/combine.c
index f0b5b0698dd..ad5ec6483a3 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -6904,11 +6904,6 @@ force_to_mode (rtx x, enum machine_mode mode, unsigned HOST_WIDE_INT mask,
       && (GET_MODE_MASK (GET_MODE (x)) & ~mask) == 0)
     return gen_lowpart (mode, x);
 
-  /* If we aren't changing the mode, X is not a SUBREG, and all zero bits in
-     MASK are already known to be zero in X, we need not do anything.  */
-  if (GET_MODE (x) == mode && code != SUBREG && (~mask & nonzero) == 0)
-    return x;
-
   switch (code)
     {
     case CLOBBER:
-- 
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