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| author | Chris Lattner <sabre@nondot.org> | 2007-09-10 23:42:42 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-09-10 23:42:42 +0000 |
| commit | a7bab1ca2db0575df9a346868e58508584b4bd4b (patch) | |
| tree | feb83388f4e2240bccbcc78f4f71aef5b0972655 /test/Transforms/InstCombine | |
| parent | 7ea9ad2effa3ba29bcb7f53217043f6df013fc07 (diff) | |
| download | external_llvm-a7bab1ca2db0575df9a346868e58508584b4bd4b.zip external_llvm-a7bab1ca2db0575df9a346868e58508584b4bd4b.tar.gz external_llvm-a7bab1ca2db0575df9a346868e58508584b4bd4b.tar.bz2 | |
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')
| -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 0000000..2dcb439 --- /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 +} |