1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
2 ; Test to make sure malloc's bitcast does not block detection of a store
3 ; to aliased memory; GVN should not optimize away the load in this program.
4 ; RUN: opt < %s -passes=newgvn -S | FileCheck %s
7 ; CHECK-LABEL: define i64 @test() {
8 ; CHECK-NEXT: [[TMP1:%.*]] = tail call ptr @malloc(i64 mul (i64 ptrtoint (ptr getelementptr (i64, ptr null, i64 1) to i64), i64 4))
9 ; CHECK-NEXT: store i8 42, ptr [[TMP1]], align 1
10 ; CHECK-NEXT: [[Y:%.*]] = load i64, ptr [[TMP1]], align 4
11 ; CHECK-NEXT: ret i64 [[Y]]
13 %1 = tail call ptr @malloc(i64 mul (i64 4, i64 ptrtoint (ptr getelementptr (i64, ptr null, i64 1) to i64))) ; <ptr> [#uses=2]
15 %Y = load i64, ptr %1 ; <i64> [#uses=1]
19 declare noalias ptr @malloc(i64)