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| author | Chris Lattner <sabre@nondot.org> | 2007-09-10 23:42:42 +0000 |
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| committer | Chris Lattner <sabre@nondot.org> | 2007-09-10 23:42:42 +0000 |
| commit | a0ef5ed742a81b134ac4438c3a4adc0c9a151b64 (patch) | |
| tree | feb83388f4e2240bccbcc78f4f71aef5b0972655 /test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll | |
| parent | 0c0f7c935bc4c6de74bd4025ceca7278e128f48d (diff) | |
| download | llvm-a0ef5ed742a81b134ac4438c3a4adc0c9a151b64.tar.gz llvm-a0ef5ed742a81b134ac4438c3a4adc0c9a151b64.tar.bz2 llvm-a0ef5ed742a81b134ac4438c3a4adc0c9a151b64.tar.xz | |
Fix a buggy constant folding transformation when handling aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41818 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll')
| -rw-r--r-- | test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll b/test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll new file mode 100644 index 0000000000..2dcb43926b --- /dev/null +++ b/test/Transforms/InstCombine/2007-09-10-AliasConstFold.ll @@ -0,0 +1,13 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep icmp +; PR1646 + +@__gthrw_pthread_cancel = alias weak i32 (i32)* @pthread_cancel ; <i32 (i32)*> [#uses=1] +@__gthread_active_ptr.5335 = internal constant i8* bitcast (i32 (i32)* @__gthrw_pthread_cancel to i8*) ; <i8**> [#uses=1] +declare extern_weak i32 @pthread_cancel(i32) + +define i1 @__gthread_active_p() { +entry: + %tmp1 = load i8** @__gthread_active_ptr.5335, align 4 ; <i8*> [#uses=1] + %tmp2 = icmp ne i8* %tmp1, null ; <i1> [#uses=1] + ret i1 %tmp2 +} |