1*0f2f1c2bSVitaly Buka; Regression test for msan not invalidating GlobalsAA. 2*0f2f1c2bSVitaly Buka; RUN: opt < %s -S -passes='require<globals-aa>,module(msan),require<globals-aa>,early-cse<memssa>' 2>&1 | FileCheck %s 3*0f2f1c2bSVitaly Buka 4*0f2f1c2bSVitaly Bukatarget triple = "x86_64-unknown-linux" 5*0f2f1c2bSVitaly Buka 6*0f2f1c2bSVitaly Bukadefine ptr @foo(ptr %p) local_unnamed_addr sanitize_memory { 7*0f2f1c2bSVitaly Bukaentry: 8*0f2f1c2bSVitaly Buka ret ptr %p 9*0f2f1c2bSVitaly Buka} 10*0f2f1c2bSVitaly Buka 11*0f2f1c2bSVitaly Bukadefine i32 @test() local_unnamed_addr sanitize_memory { 12*0f2f1c2bSVitaly Bukaentry: 13*0f2f1c2bSVitaly Buka ; CHECK-LABEL: define i32 @test() 14*0f2f1c2bSVitaly Buka 15*0f2f1c2bSVitaly Buka %x = alloca i32 16*0f2f1c2bSVitaly Buka store i32 7, ptr %x 17*0f2f1c2bSVitaly Buka 18*0f2f1c2bSVitaly Buka ; CHECK: store i64 0, ptr @__msan_retval_tls 19*0f2f1c2bSVitaly Buka ; CHECK-NEXT: call ptr @foo( 20*0f2f1c2bSVitaly Buka 21*0f2f1c2bSVitaly Buka %call = call ptr @foo(ptr %x) 22*0f2f1c2bSVitaly Buka 23*0f2f1c2bSVitaly Buka ; If GlobalsAA is eliminated correctly, early-cse should not remove next load. 24*0f2f1c2bSVitaly Buka ; CHECK-NEXT: %[[MSRET:.*]] = load i64, ptr @__msan_retval_tls 25*0f2f1c2bSVitaly Buka ; CHECK-NEXT: %[[MSCMP:.*]] = icmp ne i64 %[[MSRET]], 0 26*0f2f1c2bSVitaly Buka ; CHECK-NEXT: br i1 %[[MSCMP]], 27*0f2f1c2bSVitaly Buka 28*0f2f1c2bSVitaly Buka %ret = load i32, ptr %call 29*0f2f1c2bSVitaly Buka ret i32 %ret 30*0f2f1c2bSVitaly Buka} 31