1; RUN: opt -basic-aa -print-memoryssa -verify-memoryssa -enable-new-pm=0 -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; 4; Ensuring that external functions without attributes are MemoryDefs 5 6@g = external global i32 7declare void @modifyG() 8 9define i32 @foo() { 10; CHECK: MemoryUse(liveOnEntry) 11; CHECK-NEXT: %1 = load i32 12 %1 = load i32, i32* @g 13 14; CHECK: 1 = MemoryDef(liveOnEntry) 15; CHECK-NEXT: store i32 4 16 store i32 4, i32* @g, align 4 17 18; CHECK: 2 = MemoryDef(1) 19; CHECK-NEXT: call void @modifyG() 20 call void @modifyG() 21 22; CHECK: MemoryUse(2) 23; CHECK-NEXT: %2 = load i32 24 %2 = load i32, i32* @g 25 %3 = add i32 %2, %1 26 ret i32 %3 27} 28 29declare void @readEverything() readonly 30declare void @clobberEverything() 31 32; CHECK-LABEL: define void @bar 33define void @bar() { 34; CHECK: 1 = MemoryDef(liveOnEntry) 35; CHECK-NEXT: call void @clobberEverything() 36 call void @clobberEverything() 37 br i1 undef, label %if.end, label %if.then 38 39if.then: 40; CHECK: MemoryUse(1) 41; CHECK-NEXT: call void @readEverything() 42 call void @readEverything() 43; CHECK: 2 = MemoryDef(1) 44; CHECK-NEXT: call void @clobberEverything() 45 call void @clobberEverything() 46 br label %if.end 47 48if.end: 49; CHECK: 3 = MemoryPhi({%0,1},{if.then,2}) 50; CHECK: MemoryUse(3) 51; CHECK-NEXT: call void @readEverything() 52 call void @readEverything() 53 ret void 54} 55