| ; 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* 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* %X ; <i64> [#uses=1] |
| ret i64 %Y |
| ; CHECK: %Y = load i64* %X |
| ; CHECK: ret i64 %Y |
| } |
| |
| declare noalias i8* @malloc(i64) |
