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 < %s 2>&1 | FileCheck %s 3; 4; Things that BasicAA can prove points to constant memory should be 5; liveOnEntry, as well. 6 7declare void @clobberAllTheThings() 8 9@str = private unnamed_addr constant [2 x i8] c"hi" 10 11define i8 @foo() { 12; CHECK: 1 = MemoryDef(liveOnEntry) 13; CHECK-NEXT: call void @clobberAllTheThings() 14 call void @clobberAllTheThings() 15 %1 = getelementptr [2 x i8], [2 x i8]* @str, i64 0, i64 0 16; CHECK: MemoryUse(liveOnEntry) 17; CHECK-NEXT: %2 = load i8 18 %2 = load i8, i8* %1, align 1 19 %3 = getelementptr [2 x i8], [2 x i8]* @str, i64 0, i64 1 20; CHECK: MemoryUse(liveOnEntry) 21; CHECK-NEXT: %4 = load i8 22 %4 = load i8, i8* %3, align 1 23 %5 = add i8 %2, %4 24 ret i8 %5 25} 26 27define i8 @select(i1 %b) { 28 %1 = alloca i8, align 1 29; CHECK: 1 = MemoryDef(liveOnEntry) 30; CHECK-NEXT: store i8 0 31 store i8 0, i8* %1, align 1 32 33; CHECK: 2 = MemoryDef(1) 34; CHECK-NEXT: call void @clobberAllTheThings() 35 call void @clobberAllTheThings() 36 %2 = getelementptr [2 x i8], [2 x i8]* @str, i64 0, i64 0 37 %3 = select i1 %b, i8* %2, i8* %1 38; CHECK: MemoryUse(2) 39; CHECK-NEXT: %4 = load i8 40 %4 = load i8, i8* %3, align 1 41 ret i8 %4 42} 43