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| author | Jeff Law <law@redhat.com> | 2015-09-21 11:09:53 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2015-09-21 11:09:53 -0600 |
| commit | d7b00a16de70d84dce94a1f760265497f3408a7b (patch) | |
| tree | c5918fcbec8344440b4eb7beeb5d489477c19b60 /gcc/config | |
| parent | bdaaa8b70f8e76b2743ee7bafc438e499411753f (diff) | |
| download | gcc-d7b00a16de70d84dce94a1f760265497f3408a7b.zip gcc-d7b00a16de70d84dce94a1f760265497f3408a7b.tar.gz gcc-d7b00a16de70d84dce94a1f760265497f3408a7b.tar.bz2 | |
[PATCH] Fix undefined behavior in h8300 backend
* config/h8300/h8300.md (andsi3_ashift_n_lower): Avoid undefined
behavior.
* gcc.target/h8300/andsi3_ashift_n_lower.c: New test.
From-SVN: r227978
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/h8300/h8300.md | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md index 4079b30..52213ac 100644 --- a/gcc/config/h8300/h8300.md +++ b/gcc/config/h8300/h8300.md @@ -3914,7 +3914,8 @@ (clobber (match_scratch:QI 4 "=X,&r"))] "(TARGET_H8300H || TARGET_H8300S) && INTVAL (operands[2]) <= 15 - && INTVAL (operands[3]) == ((-1 << INTVAL (operands[2])) & 0xffff)" + && UINTVAL (operands[3]) == ((HOST_WIDE_INT_M1U << INTVAL (operands[2])) + & 0xffff)" "#" "&& reload_completed" [(parallel [(set (match_dup 5) |