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 ] 7 define void @invert_branch_on_arg_inf_loop(i32 addrspace(1)* %out, i1 %arg) { 8 entry: 9 br i1 %arg, label %for.end, label %for.body 10 11 for.body: ; preds = %entry, %for.body 12 store i32 999, i32 addrspace(1)* %out, align 4 13 br label %for.body 14 15 for.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: 25 define void @invert_branch_on_arg_jump_into_loop(i32 addrspace(1)* %out, i32 %n, i1 %arg) { 26 entry: 27 br label %for.body 28 29 for.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 35 mid.loop: 36 store i32 333, i32 addrspace(1)* %out, align 4 37 br label %for.end 38 39 end.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 44 for.end: 45 ret void 46 } 47 48
