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