1 ; RUN: opt < %s -lcssa -S | FileCheck %s 2 ; RUN: opt < %s -passes=lcssa -S | FileCheck %s 3 4 declare i1 @c1() 5 6 declare i1 @c2() 7 8 define i32 @foo() { 9 ; CHECK-LABEL: @foo 10 entry: 11 br label %loop_begin 12 loop_begin: ; preds = %loop_body.2, %entry 13 br i1 true, label %loop_body.1, label %loop_exit2 14 loop_body.1: ; preds = %loop_begin 15 %X.1 = add i32 0, 1 ; <i32> [#uses=1] 16 %rel.1 = call i1 @c1( ) ; <i1> [#uses=1] 17 br i1 %rel.1, label %loop_exit, label %loop_body.2 18 loop_body.2: ; preds = %loop_body.1 19 %rel.2 = call i1 @c2( ) ; <i1> [#uses=1] 20 br i1 %rel.2, label %loop_exit, label %loop_begin 21 loop_exit: ; preds = %loop_body.2, %loop_body.1 22 ; CHECK: %X.1.lcssa = phi 23 ret i32 %X.1 24 loop_exit2: ; preds = %loop_begin 25 ret i32 1 26 ; CHECK-NOT: %X.1.lcssa1 27 } 28 29
