48 lines
1.8 KiB
LLVM
48 lines
1.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -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: @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 !0
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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 %for1.header
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for1.header: ; preds = %for.cond.cleanup3, %for.cond1.preheader.lr.ph
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br label %for2.header
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for2.header: ; preds = %for.body10, %for.body10.preheader
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%indvars.iv = phi i64 [ 0, %for1.header ], [ %indvars.iv.next, %for2.header ]
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 0
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br i1 %exitcond, label %for1.latch, label %for2.header
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for1.latch: ; preds = %for.cond.cleanup9
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%c = call i1 @cond()
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br i1 %c, label %exit, label %for1.header, !llvm.loop !0
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exit: ; preds = %for.cond.cleanup3, %entry
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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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