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; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
;
; Things that BasicAA can prove points to constant memory should be
; liveOnEntry, as well.
declare void @clobberAllTheThings()
@str = private unnamed_addr constant [2 x i8] c"hi"
define i8 @foo() {
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: call void @clobberAllTheThings()
call void @clobberAllTheThings()
%1 = getelementptr [2 x i8], [2 x i8]* @str, i64 0, i64 0
; CHECK: MemoryUse(liveOnEntry)
; CHECK-NEXT: %2 = load i8
%2 = load i8, i8* %1, align 1
%3 = getelementptr [2 x i8], [2 x i8]* @str, i64 0, i64 1
; CHECK: MemoryUse(liveOnEntry)
; CHECK-NEXT: %4 = load i8
%4 = load i8, i8* %3, align 1
%5 = add i8 %2, %4
ret i8 %5
}
define i8 @select(i1 %b) {
%1 = alloca i8, align 1
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: store i8 0
store i8 0, i8* %1, align 1
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: call void @clobberAllTheThings()
call void @clobberAllTheThings()
%2 = getelementptr [2 x i8], [2 x i8]* @str, i64 0, i64 0
%3 = select i1 %b, i8* %2, i8* %1
; CHECK: MemoryUse(2)
; CHECK-NEXT: %4 = load i8
%4 = load i8, i8* %3, align 1
ret i8 %4
}
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