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| author | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-12-14 11:33:00 +0000 |
|---|---|---|
| committer | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-12-14 11:33:00 +0000 |
| commit | 4bc89ef0ff8d1b727dc79e044980fbe9577c1e53 (patch) | |
| tree | 67a99df131f3aa22aba42eb7b4005cdcdb13ed87 | |
| parent | f1cf83ef626cfdb8c85316ad7a8a5e4ade87b4f4 (diff) | |
| download | gcc-4bc89ef0ff8d1b727dc79e044980fbe9577c1e53.tar.gz | |
[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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231613 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/combine.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6d3210f63c8..c79b65c9141 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2015-12-14 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * combine.c (change_zero_ext): Do not create a shift of zero length. + 2015-12-14 Claudiu Zissulescu <claziss@synopsys.com> * config/arc/arc.c (TARGET_NO_SPECULATION_IN_DELAY_SLOTS_P): diff --git a/gcc/combine.c b/gcc/combine.c index 71b1656ba33..317a4b0e12a 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 |