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fix PR8102, a case where we'd copyValue from a value that we already

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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
This commit is contained in:
Chris Lattner
2010-09-14 00:19:00 +00:00
parent 3a210e2d30
commit 7abdb22e52
2 changed files with 31 additions and 11 deletions
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20
test/Transforms/LICM/crash.ll
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@@ -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*)