66 lines
1.6 KiB
LLVM
66 lines
1.6 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=loop-unroll -unroll-verify-domtree -verify-dom-info -S %s | FileCheck %s
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define void @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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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 true, label [[LOOP_HEADER_1:%.*]], label [[LOOP_EXIT:%.*]]
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; CHECK: loop.header.1:
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; CHECK-NEXT: br i1 true, label [[EXIT_LOOPEXIT:%.*]], label [[LOOP_LATCH_1:%.*]]
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; CHECK: loop.latch.1:
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; CHECK-NEXT: br label [[LOOP_EXIT]]
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; CHECK: loop.exit:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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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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%exitcond = phi i1 [ true, %loop.latch ], [ false, %entry ]
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br i1 %exitcond, label %exit, label %loop.latch
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loop.latch:
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br i1 true, label %loop.header, label %loop.exit
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loop.exit:
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br label %exit
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exit:
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ret void
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}
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define void @exiting_terminator_is_switch() {
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; CHECK-LABEL: @exiting_terminator_is_switch(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: switch i1 true, label [[LOOP_BACKEDGE:%.*]] [
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; CHECK-NEXT: i1 true, label [[EXIT:%.*]]
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; CHECK-NEXT: i1 false, label [[LOOP_BACKEDGE]]
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; CHECK-NEXT: ]
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; CHECK: loop.backedge:
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; CHECK-NEXT: unreachable
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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bb:
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br label %loop
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loop:
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switch i1 true, label %loop [
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i1 true, label %exit
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i1 false, label %loop
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]
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exit:
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ret void
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}
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