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| author | Chris Lattner <sabre@nondot.org> | 2010-09-14 00:19:00 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-09-14 00:19:00 +0000 |
| commit | 7abdb22e52e2122cb04479a1129dc68916dece4c (patch) | |
| tree | ca1e440a64d678b09c1a63a370ad9968d66d49fb /test | |
| parent | 3a210e2d302758101ac06946e86027b327c7d0f3 (diff) | |
| download | llvm-7abdb22e52e2122cb04479a1129dc68916dece4c.tar.gz llvm-7abdb22e52e2122cb04479a1129dc68916dece4c.tar.bz2 llvm-7abdb22e52e2122cb04479a1129dc68916dece4c.tar.xz | |
fix PR8102, a case where we'd copyValue from a value that we already
deleted. Fix this by doing the copyValue's before we delete stuff!
The testcase only repros the problem on my system with valgrind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113820 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LICM/crash.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/LICM/crash.ll b/test/Transforms/LICM/crash.ll index d0b6d78db1..88be5c41cc 100644 --- a/test/Transforms/LICM/crash.ll +++ b/test/Transforms/LICM/crash.ll @@ -39,3 +39,23 @@ for.body: ; preds = %for.body, %entry store i32 undef, i32* @g_8, align 4 br label %for.body } + +; PR8102 +define void @test3() { +entry: + %__first = alloca { i32* } + br i1 undef, label %for.cond, label %for.end + +for.cond: ; preds = %for.cond, %entry + %tmp1 = getelementptr { i32*}* %__first, i32 0, i32 0 + %tmp2 = load i32** %tmp1, align 4 + %call = tail call i32* @test3helper(i32* %tmp2) + %tmp3 = getelementptr { i32*}* %__first, i32 0, i32 0 + store i32* %call, i32** %tmp3, align 4 + br i1 false, label %for.cond, label %for.end + +for.end: ; preds = %for.cond, %entry + ret void +} + +declare i32* @test3helper(i32*) |