Commit 487e8e6b authored by Bill Wendling's avatar Bill Wendling
Browse files

Merging r182656: 

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r182656 | d0k | 2013-05-24 11:05:35 -0700 (Fri, 24 May 2013) | 3 lines

LoopVectorize: LoopSimplify can't canonicalize loops with an indirectbr in it, don't assert on those cases.

Fixes PR16139.
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llvm-svn: 182785
parent ce59b557

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

+4 −1
Original line number Diff line number Diff line
@@ -2308,7 +2308,10 @@ bool LoopVectorizationLegality::canVectorizeWithIfConvert() { 
}



bool LoopVectorizationLegality::canVectorize() {

  assert(TheLoop->getLoopPreheader() && "No preheader!!");

  // We must have a loop in canonical form. Loops with indirectbr in them cannot

  // be canonicalized.

  if (!TheLoop->getLoopPreheader())

    return false;



  // We can only vectorize innermost loops.

  if (TheLoop->getSubLoopsVector().size())

llvm/test/Transforms/LoopVectorize/lcssa-crash.ll

+11 −0
Original line number Diff line number Diff line
@@ -27,3 +27,14 @@ for.end.i.i.i: 
  unreachable

}



; PR16139

define void @test2(i8* %x) {

entry:

  indirectbr i8* %x, [ label %L0, label %L1 ]



L0:

  br label %L0



L1:

  ret void

}