1 ; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s 2 ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s 3 ; This test checks a number of things: 4 ; First, the lifetime markers should not clobber any uses of Q or P. 5 ; Second, the loads of P are MemoryUse(LiveOnEntry) due to the placement of the markers vs the loads. 6 7 define i8 @test(i8* %P, i8* %Q) { 8 entry: 9 ; CHECK: 1 = MemoryDef(liveOnEntry) 10 ; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 32, i8* %P) 11 call void @llvm.lifetime.start.p0i8(i64 32, i8* %P) 12 ; CHECK: MemoryUse(1) 13 ; CHECK-NEXT: %0 = load i8, i8* %P 14 %0 = load i8, i8* %P 15 ; CHECK: 2 = MemoryDef(1) 16 ; CHECK-NEXT: store i8 1, i8* %P 17 store i8 1, i8* %P 18 ; CHECK: 3 = MemoryDef(2) 19 ; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 32, i8* %P) 20 call void @llvm.lifetime.end.p0i8(i64 32, i8* %P) 21 ; CHECK: MemoryUse(liveOnEntry) 22 ; CHECK-NEXT: %1 = load i8, i8* %P 23 %1 = load i8, i8* %P 24 ; CHECK: MemoryUse(2) 25 ; CHECK-NEXT: %2 = load i8, i8* %Q 26 %2 = load i8, i8* %Q 27 ret i8 %1 28 } 29 declare void @llvm.lifetime.start.p0i8(i64 %S, i8* nocapture %P) readonly 30 declare void @llvm.lifetime.end.p0i8(i64 %S, i8* nocapture %P) 31
