1; RUN: opt -S -o - -structurizecfg < %s | FileCheck %s 2 3; CHECK-LABEL: @invert_branch_on_arg_inf_loop( 4; CHECK: entry: 5; CHECK: %arg.inv = xor i1 %arg, true 6; CHECK: phi i1 [ false, %Flow1 ], [ %arg.inv, %entry ] 7define void @invert_branch_on_arg_inf_loop(i32 addrspace(1)* %out, i1 %arg) { 8entry: 9 br i1 %arg, label %for.end, label %for.body 10 11for.body: ; preds = %entry, %for.body 12 store i32 999, i32 addrspace(1)* %out, align 4 13 br label %for.body 14 15for.end: ; preds = %Flow 16 ret void 17} 18 19 20; CHECK-LABEL: @invert_branch_on_arg_jump_into_loop( 21; CHECK: entry: 22; CHECK: %arg.inv = xor i1 %arg, true 23; CHECK: Flow: 24; CHECK: Flow1: 25define void @invert_branch_on_arg_jump_into_loop(i32 addrspace(1)* %out, i32 %n, i1 %arg) { 26entry: 27 br label %for.body 28 29for.body: 30 %i = phi i32 [0, %entry], [%i.inc, %end.loop] 31 %ptr = getelementptr i32, i32 addrspace(1)* %out, i32 %i 32 store i32 %i, i32 addrspace(1)* %ptr, align 4 33 br i1 %arg, label %mid.loop, label %end.loop 34 35mid.loop: 36 store i32 333, i32 addrspace(1)* %out, align 4 37 br label %for.end 38 39end.loop: 40 %i.inc = add i32 %i, 1 41 %cmp = icmp ne i32 %i.inc, %n 42 br i1 %cmp, label %for.body, label %for.end 43 44for.end: 45 ret void 46} 47 48