| ; RUN: opt < %s -basicaa -functionattrs -S | FileCheck %s |
| |
| %struct.X = type { i32*, i32* } |
| |
| declare i32 @g(i32*) readnone |
| |
| define i32 @f() { |
| ; CHECK: @f() readnone |
| %x = alloca i32 ; <i32*> [#uses=2] |
| store i32 0, i32* %x |
| %y = call i32 @g(i32* %x) ; <i32> [#uses=1] |
| ret i32 %y |
| } |
| |
| define i32 @foo() nounwind { |
| ; CHECK: @foo() nounwind readonly |
| entry: |
| %y = alloca %struct.X ; <%struct.X*> [#uses=2] |
| %x = alloca %struct.X ; <%struct.X*> [#uses=2] |
| %j = alloca i32 ; <i32*> [#uses=2] |
| %i = alloca i32 ; <i32*> [#uses=2] |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| store i32 0, i32* %i, align 4 |
| store i32 1, i32* %j, align 4 |
| %0 = getelementptr inbounds %struct.X* %y, i32 0, i32 0 ; <i32**> [#uses=1] |
| store i32* %i, i32** %0, align 8 |
| %1 = getelementptr inbounds %struct.X* %x, i32 0, i32 1 ; <i32**> [#uses=1] |
| store i32* %j, i32** %1, align 8 |
| %x1 = bitcast %struct.X* %x to i8* ; <i8*> [#uses=2] |
| %y2 = bitcast %struct.X* %y to i8* ; <i8*> [#uses=1] |
| call void @llvm.memcpy.i64(i8* %x1, i8* %y2, i64 8, i32 1) |
| %2 = bitcast i8* %x1 to i32** ; <i32**> [#uses=1] |
| %3 = load i32** %2, align 8 ; <i32*> [#uses=1] |
| %4 = load i32* %3, align 4 ; <i32> [#uses=1] |
| br label %return |
| |
| return: ; preds = %entry |
| ret i32 %4 |
| } |
| |
| define i32 @t(i32 %a, i32 %b, i32 %c) nounwind { |
| ; CHECK: @t(i32 %a, i32 %b, i32 %c) nounwind readnone |
| entry: |
| %a.addr = alloca i32 ; <i32*> [#uses=3] |
| %c.addr = alloca i32 ; <i32*> [#uses=2] |
| store i32 %a, i32* %a.addr |
| store i32 %c, i32* %c.addr |
| %tmp = load i32* %a.addr ; <i32> [#uses=1] |
| %tobool = icmp ne i32 %tmp, 0 ; <i1> [#uses=1] |
| br i1 %tobool, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %p.0 = phi i32* [ %a.addr, %if.then ], [ %c.addr, %if.else ] ; <i32*> [#uses=1] |
| %tmp2 = load i32* %p.0 ; <i32> [#uses=1] |
| ret i32 %tmp2 |
| } |
| |
| declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind |
