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; RUN: opt < %s -simple-loop-unswitch -S | FileCheck %s
; RUN: opt < %s -simple-loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -S | FileCheck %s
; This test checks if unswitched condition preserve make.implicit metadata.
define i32 @test(i1 %cond) {
; CHECK-LABEL: @test(
entry:
br label %loop_begin
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 %{{.*}}, label %entry.split, label %loop_exit, !make.implicit !0
;
; CHECK: entry.split:
; CHECK-NEXT: br label %loop_begin
loop_begin:
br i1 %cond, label %continue, label %loop_exit, !make.implicit !0
; CHECK: loop_begin:
; CHECK-NEXT: br label %continue
continue:
call void @some_func()
br label %loop_begin
; CHECK: continue:
; CHECK-NEXT: call
; CHECK-NEXT: br label %loop_begin
loop_exit:
ret i32 0
; CHECK: loop_exit:
; CHECK-NEXT: ret
}
declare void @some_func()
!0 = !{}
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