blob: 5f9fd2633c8d1607f9dae746ed70a9c61ab4b9a7 [file] [log] [blame]
; RUN: opt < %s -lcssa -S | FileCheck %s
; RUN: opt < %s -passes=lcssa -S | FileCheck %s
declare i1 @c1()
declare i1 @c2()
define i32 @foo() {
; CHECK-LABEL: @foo
entry:
br label %loop_begin
loop_begin: ; preds = %loop_body.2, %entry
br i1 true, label %loop_body.1, label %loop_exit2
loop_body.1: ; preds = %loop_begin
%X.1 = add i32 0, 1 ; <i32> [#uses=1]
%rel.1 = call i1 @c1( ) ; <i1> [#uses=1]
br i1 %rel.1, label %loop_exit, label %loop_body.2
loop_body.2: ; preds = %loop_body.1
%rel.2 = call i1 @c2( ) ; <i1> [#uses=1]
br i1 %rel.2, label %loop_exit, label %loop_begin
loop_exit: ; preds = %loop_body.2, %loop_body.1
; CHECK: %X.1.lcssa = phi
ret i32 %X.1
loop_exit2: ; preds = %loop_begin
ret i32 1
; CHECK-NOT: %X.1.lcssa1
}