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| author | Chris Lattner <sabre@nondot.org> | 2009-12-04 02:12:12 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-12-04 02:12:12 +0000 |
| commit | e4968a4b9ddff2f5c44727017521d06842abe7fe (patch) | |
| tree | d06ca28b9c00d0cc086b9212611f63f47d6373a2 /test/Transforms/GVN | |
| parent | 210e45af3a579beeefb001c8f13c94e80407aad5 (diff) | |
| download | llvm-e4968a4b9ddff2f5c44727017521d06842abe7fe.tar.gz llvm-e4968a4b9ddff2f5c44727017521d06842abe7fe.tar.bz2 llvm-e4968a4b9ddff2f5c44727017521d06842abe7fe.tar.xz | |
Small and carefully crafted testcase showing a miscompilation by GVN
that I'm working on. This is manifesting as a miscompile of 255.vortex
on some targets. No check lines yet because it fails.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90520 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/GVN')
| -rw-r--r-- | test/Transforms/GVN/rle.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/Transforms/GVN/rle.ll b/test/Transforms/GVN/rle.ll index cdd1f4fa4e..ef34a36092 100644 --- a/test/Transforms/GVN/rle.ll +++ b/test/Transforms/GVN/rle.ll @@ -280,3 +280,36 @@ Cont: } +declare i1 @cond() readonly +declare i1 @cond2() readonly + +define i32 @phi_trans2() { +entry: + %P = alloca i32, i32 400 + br label %F1 + +F1: + %A = phi i32 [1, %entry], [2, %F] + %cond2 = call i1 @cond() + br i1 %cond2, label %T1, label %TY + +T1: + %P2 = getelementptr i32* %P, i32 %A + %x = load i32* %P2 + %cond = call i1 @cond2() + br i1 %cond, label %TX, label %F + +F: + %P3 = getelementptr i32* %P, i32 2 + store i32 17, i32* %P3 + + store i32 42, i32* %P2 ; Provides "P[A]". + br label %F1 + +TX: + ret i32 %x ;; SHOULD NOT BE COMPILED TO 'ret i32 42'. +TY: + ret i32 0 +} + + |