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; RUN: opt -S -structurizecfg %s | FileCheck %s
; CHECK-LABEL: @directly_invert_compare_condition_jump_into_loop(
; CHECK: %cmp0 = fcmp uge float %arg0, %arg1
; CHECK-NEXT: br i1 %cmp0, label %end.loop, label %Flow
define void @directly_invert_compare_condition_jump_into_loop(i32 addrspace(1)* %out, i32 %n, float %arg0, float %arg1) #0 {
entry:
br label %for.body
for.body:
%i = phi i32 [0, %entry], [%i.inc, %end.loop]
%ptr = getelementptr i32, i32 addrspace(1)* %out, i32 %i
store i32 %i, i32 addrspace(1)* %ptr, align 4
%cmp0 = fcmp olt float %arg0, %arg1
br i1 %cmp0, 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
}
; CHECK-LABEL: @invert_multi_use_compare_condition_jump_into_loop(
; CHECK: %cmp0 = fcmp olt float %arg0, %arg1
; CHECK: store volatile i1 %cmp0, i1 addrspace(1)* undef
; CHECK: %0 = xor i1 %cmp0, true
; CHECK-NEXT: br i1 %0, label %end.loop, label %Flow
define void @invert_multi_use_compare_condition_jump_into_loop(i32 addrspace(1)* %out, i32 %n, float %arg0, float %arg1) #0 {
entry:
br label %for.body
for.body:
%i = phi i32 [0, %entry], [%i.inc, %end.loop]
%ptr = getelementptr i32, i32 addrspace(1)* %out, i32 %i
store i32 %i, i32 addrspace(1)* %ptr, align 4
%cmp0 = fcmp olt float %arg0, %arg1
store volatile i1 %cmp0, i1 addrspace(1)* undef
br i1 %cmp0, 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
}
attributes #0 = { nounwind }
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