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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=loop-simplify -S | FileCheck %s
; Tests loop-simplify does not move the loop metadata, because
; the loopexit block is not the latch of the loop _bb6.
define void @func(i1 %p) {
; CHECK-LABEL: @func(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header.loopexit:
; CHECK-NEXT: br label [[LOOP_HEADER]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: loop.header:
; CHECK-NEXT: br i1 [[P:%.*]], label [[BB1:%.*]], label [[EXIT:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br i1 [[P]], label [[BB2:%.*]], label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: br label [[LOOP_LATCH:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: br i1 [[P]], label [[LOOP_LATCH]], label [[LOOP_HEADER_LOOPEXIT:%.*]], !llvm.loop [[LOOP0]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop.header
loop.header:
br i1 %p, label %bb1, label %exit
bb1:
br i1 %p, label %bb2, label %bb3
bb2:
br label %bb3
bb3:
br label %loop.latch
loop.latch:
br i1 %p, label %loop.latch, label %loop.header, !llvm.loop !0
exit:
ret void
}
!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.mustprogress"}
|
