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; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
; This test checks a number of things:
; First, the lifetime markers should not clobber any uses of Q or P.
; Second, the loads of P are MemoryUse(LiveOnEntry) due to the placement of the markers vs the loads.
define i8 @test(i8* %P, i8* %Q) {
entry:
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 32, i8* %P)
call void @llvm.lifetime.start.p0i8(i64 32, i8* %P)
; CHECK: MemoryUse(1)
; CHECK-NEXT: %0 = load i8, i8* %P
%0 = load i8, i8* %P
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: store i8 1, i8* %P
store i8 1, i8* %P
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 32, i8* %P)
call void @llvm.lifetime.end.p0i8(i64 32, i8* %P)
; CHECK: MemoryUse(liveOnEntry)
; CHECK-NEXT: %1 = load i8, i8* %P
%1 = load i8, i8* %P
; CHECK: MemoryUse(2)
; CHECK-NEXT: %2 = load i8, i8* %Q
%2 = load i8, i8* %Q
ret i8 %1
}
declare void @llvm.lifetime.start.p0i8(i64 %S, i8* nocapture %P) readonly
declare void @llvm.lifetime.end.p0i8(i64 %S, i8* nocapture %P)
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