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16 lines
606 B
16 lines
606 B
4 months ago
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; Test to make sure malloc's bitcast does not block detection of a store
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; to aliased memory; GVN should not optimize away the load in this program.
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; RUN: opt < %s -gvn -S | FileCheck %s
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define i64 @test() {
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%1 = tail call i8* @malloc(i64 mul (i64 4, i64 ptrtoint (i64* getelementptr (i64, i64* null, i64 1) to i64))) ; <i8*> [#uses=2]
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store i8 42, i8* %1
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%X = bitcast i8* %1 to i64* ; <i64*> [#uses=1]
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%Y = load i64, i64* %X ; <i64> [#uses=1]
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ret i64 %Y
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; CHECK: %Y = load i64, i64* %X
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; CHECK: ret i64 %Y
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}
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declare noalias i8* @malloc(i64)
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