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