derek.holloway
7502bf64a4
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56 lines
1.9 KiB
LLVM
56 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=loop-bound-split -S < %s | FileCheck %s
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; LoopBoundSplit pass should fail to split this test's loop because the split
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; condition is false in first iteration of the loop.
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define i16 @main(i16 %qqq) {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[T0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[T8:%.*]], [[CONT19:%.*]] ]
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; CHECK-NEXT: [[T1:%.*]] = shl nuw nsw i16 [[T0]], 1
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; CHECK-NEXT: [[T2:%.*]] = add i16 [[T1]], [[QQQ:%.*]]
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; CHECK-NEXT: [[DOTNOT9:%.*]] = icmp ult i16 [[T2]], [[QQQ]]
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; CHECK-NEXT: br i1 [[DOTNOT9]], label [[HANDLER_POINTER_OVERFLOW:%.*]], label [[CONT15_CRITEDGE:%.*]]
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; CHECK: handler.pointer_overflow:
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; CHECK-NEXT: call void @__ubsan_handle_pointer_overflow()
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; CHECK-NEXT: br label [[CONT19]]
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; CHECK: cont15.critedge:
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; CHECK-NEXT: br label [[CONT19]]
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; CHECK: cont19:
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; CHECK-NEXT: [[T8]] = add nuw nsw i16 [[T0]], 1
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; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i16 [[T8]], 3
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; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: ret i16 0
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;
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entry:
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br label %for.body
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for.body:
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%t0 = phi i16 [ 0, %entry ], [ %t8, %cont19 ]
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%t1 = shl nuw nsw i16 %t0, 1
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%t2 = add i16 %t1, %qqq
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%.not9 = icmp ult i16 %t2, %qqq
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br i1 %.not9, label %handler.pointer_overflow, label %cont15.critedge
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handler.pointer_overflow:
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call void @__ubsan_handle_pointer_overflow()
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br label %cont19
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cont15.critedge:
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br label %cont19
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cont19:
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%t8 = add nuw nsw i16 %t0, 1
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%exitcond.not = icmp eq i16 %t8, 3
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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for.cond.cleanup:
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ret i16 0
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}
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declare dso_local void @__ubsan_handle_pointer_overflow()
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