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authorKyrylo Tkachov <kyrylo.tkachov@arm.com>2015-12-14 11:33:00 +0000
committerKyrylo Tkachov <ktkachov@gcc.gnu.org>2015-12-14 11:33:00 +0000
commitadb48173b8a6e7cba100e890c0ec60a9fb2188c6 (patch)
tree67a99df131f3aa22aba42eb7b4005cdcdb13ed87 /gcc/combine.c
parentf5a8c224d1f8289dd8da6b15b86956684d002a08 (diff)
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[combine] Don't create LSHIFTRT of zero bits in change_zero_ext
* combine.c (change_zero_ext): Do not create a shift of zero length. From-SVN: r231613
Diffstat (limited to 'gcc/combine.c')
-rw-r--r--gcc/combine.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c
index 71b1656..317a4b0 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -11045,7 +11045,8 @@ change_zero_ext (rtx *src)
if (BITS_BIG_ENDIAN)
start = GET_MODE_PRECISION (mode) - size - start;
- x = gen_rtx_LSHIFTRT (mode, XEXP (x, 0), GEN_INT (start));
+ x = simplify_gen_binary (LSHIFTRT, mode,
+ XEXP (x, 0), GEN_INT (start));
}
else if (GET_CODE (x) == ZERO_EXTEND
&& GET_CODE (XEXP (x, 0)) == SUBREG