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; RUN: opt -S -o - -structurizecfg < %s | FileCheck %s
; CHECK-LABEL: @invert_branch_on_arg_inf_loop(
; CHECK: entry:
; CHECK: %arg.inv = xor i1 %arg, true
; CHECK: phi i1 [ false, %Flow1 ], [ %arg.inv, %entry ]
define void @invert_branch_on_arg_inf_loop(i32 addrspace(1)* %out, i1 %arg) {
entry:
br i1 %arg, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
store i32 999, i32 addrspace(1)* %out, align 4
br label %for.body
for.end: ; preds = %Flow
ret void
}
; CHECK-LABEL: @invert_branch_on_arg_jump_into_loop(
; CHECK: entry:
; CHECK: %arg.inv = xor i1 %arg, true
; CHECK: Flow:
; CHECK: Flow1:
define void @invert_branch_on_arg_jump_into_loop(i32 addrspace(1)* %out, i32 %n, i1 %arg) {
entry:
br label %for.body
for.body:
%i = phi i32 [0, %entry], [%i.inc, %end.loop]
%ptr = getelementptr i32 addrspace(1)* %out, i32 %i
store i32 %i, i32 addrspace(1)* %ptr, align 4
br i1 %arg, label %mid.loop, label %end.loop
mid.loop:
store i32 333, i32 addrspace(1)* %out, align 4
br label %for.end
end.loop:
%i.inc = add i32 %i, 1
%cmp = icmp ne i32 %i.inc, %n
br i1 %cmp, label %for.body, label %for.end
for.end:
ret void
}
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