1 ; RUN: opt < %s -basicaa -functionattrs -S | FileCheck %s
3 %struct.X = type { i32*, i32* }
5 declare i32 @g(i32*) readnone
9 %x = alloca i32 ; <i32*> [#uses=2]
11 %y = call i32 @g(i32* %x) ; <i32> [#uses=1]
15 define i32 @foo() nounwind {
16 ; CHECK: @foo() nounwind readonly
18 %y = alloca %struct.X ; <%struct.X*> [#uses=2]
19 %x = alloca %struct.X ; <%struct.X*> [#uses=2]
20 %j = alloca i32 ; <i32*> [#uses=2]
21 %i = alloca i32 ; <i32*> [#uses=2]
22 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
23 store i32 0, i32* %i, align 4
24 store i32 1, i32* %j, align 4
25 %0 = getelementptr inbounds %struct.X* %y, i32 0, i32 0 ; <i32**> [#uses=1]
26 store i32* %i, i32** %0, align 8
27 %1 = getelementptr inbounds %struct.X* %x, i32 0, i32 1 ; <i32**> [#uses=1]
28 store i32* %j, i32** %1, align 8
29 %x1 = bitcast %struct.X* %x to i8* ; <i8*> [#uses=2]
30 %y2 = bitcast %struct.X* %y to i8* ; <i8*> [#uses=1]
31 call void @llvm.memcpy.i64(i8* %x1, i8* %y2, i64 8, i32 1)
32 %2 = bitcast i8* %x1 to i32** ; <i32**> [#uses=1]
33 %3 = load i32** %2, align 8 ; <i32*> [#uses=1]
34 %4 = load i32* %3, align 4 ; <i32> [#uses=1]
37 return: ; preds = %entry
41 define i32 @t(i32 %a, i32 %b, i32 %c) nounwind {
42 ; CHECK: @t(i32 %a, i32 %b, i32 %c) nounwind readnone
44 %a.addr = alloca i32 ; <i32*> [#uses=3]
45 %c.addr = alloca i32 ; <i32*> [#uses=2]
46 store i32 %a, i32* %a.addr
47 store i32 %c, i32* %c.addr
48 %tmp = load i32* %a.addr ; <i32> [#uses=1]
49 %tobool = icmp ne i32 %tmp, 0 ; <i1> [#uses=1]
50 br i1 %tobool, label %if.then, label %if.else
52 if.then: ; preds = %entry
55 if.else: ; preds = %entry
58 if.end: ; preds = %if.else, %if.then
59 %p.0 = phi i32* [ %a.addr, %if.then ], [ %c.addr, %if.else ] ; <i32*> [#uses=1]
60 %tmp2 = load i32* %p.0 ; <i32> [#uses=1]
64 declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind