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; 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
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