48 lines
1.5 KiB
LLVM
48 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
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; RUN: opt -passes=loop-vectorize -enable-vplan-native-path -S %s | FileCheck %s
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declare i1 @cond()
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; Make sure we do not vectorize (or crash) on outer loops with uncomputable
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; trip-counts.
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define void @test() {
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; CHECK-LABEL: define void @test() {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: br label %[[FOR1_HEADER:.*]]
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; CHECK: [[FOR1_HEADER]]:
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; CHECK-NEXT: br label %[[FOR2_HEADER:.*]]
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; CHECK: [[FOR2_HEADER]]:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, %[[FOR1_HEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[FOR2_HEADER]] ]
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 0
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; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR1_LATCH:.*]], label %[[FOR2_HEADER]]
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; CHECK: [[FOR1_LATCH]]:
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; CHECK-NEXT: [[C:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[C]], label %[[EXIT:.*]], label %[[FOR1_HEADER]], !llvm.loop [[LOOP0:![0-9]+]]
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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 %outer.header
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outer.header:
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br label %inner
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inner:
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%iv = phi i64 [ 0, %outer.header ], [ %iv.next, %inner ]
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%iv.next = add nuw nsw i64 %iv, 1
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%inner.ec = icmp eq i64 %iv.next, 0
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br i1 %inner.ec, label %outer.latch, label %inner
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outer.latch:
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%c = call i1 @cond()
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br i1 %c, label %exit, label %outer.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.vectorize.enable", i1 true}
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