derek.holloway
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70 lines
1.8 KiB
LLVM
70 lines
1.8 KiB
LLVM
; RUN: opt -S -passes=loop-simplify -disable-output -verify-loop-info -verify-dom-info < %s
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; PR5235
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; When loopsimplify inserts a preheader for this loop, it should add the new
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; block to the enclosing loop and not get confused by the unreachable
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; bogus loop entry.
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define void @is_extract_cab(i1 %arg) nounwind {
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entry:
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br label %header
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header: ; preds = %if.end206, %cond.end66, %if.end23
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br label %while.body115
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while.body115: ; preds = %9, %if.end192, %if.end101
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br i1 %arg, label %header, label %while.body115
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foo:
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br label %while.body115
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}
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; When loopsimplify generates dedicated exit block for blocks that are landing
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; pads (i.e. innerLoopExit in this test), we should not get confused with the
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; unreachable pred (unreachableB) to innerLoopExit.
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define void @baz(i32 %trip) personality ptr @wobble {
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entry:
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br label %outerHeader
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outerHeader:
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invoke void @foo()
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to label %innerPreheader unwind label %innerLoopExit
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innerPreheader:
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br label %innerH
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innerH:
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%tmp50 = invoke ptr undef()
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to label %innerLatch unwind label %innerLoopExit
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innerLatch:
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%cmp = icmp slt i32 %trip, 42
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br i1 %cmp, label %innerH, label %retblock
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unreachableB: ; No predecessors!
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%tmp62 = invoke ptr undef()
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to label %retblock unwind label %innerLoopExit
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; undedicated exit block (preds from inner and outer loop)
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; Also has unreachableB as pred.
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innerLoopExit:
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%tmp65 = landingpad { ptr, i32 }
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cleanup
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invoke void @foo()
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to label %outerHeader unwind label %unwindblock
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unwindblock:
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%tmp67 = landingpad { ptr, i32 }
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cleanup
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ret void
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retblock:
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ret void
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}
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; Function Attrs: nounwind
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declare ptr @wobble()
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; Function Attrs: uwtable
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declare void @foo()
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