[llvm-commits] [llvm] r137628 - /llvm/trunk/lib/Analysis/LoopInfo.cpp

[Duncan Sands]

Hi Bill,

> The landingpad instruction isn't loop-invariant.

shouldn't mayReadFromMemory() return 'true' for a landing pad instruction?

Ciao, Duncan.

>
> Modified:
>      llvm/trunk/lib/Analysis/LoopInfo.cpp
>
> Modified: llvm/trunk/lib/Analysis/LoopInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/LoopInfo.cpp?rev=137628&r1=137627&r2=137628&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Analysis/LoopInfo.cpp (original)
> +++ llvm/trunk/lib/Analysis/LoopInfo.cpp Mon Aug 15 13:22:49 2011
> @@ -99,6 +99,9 @@
>       return false;
>     if (I->mayReadFromMemory())
>       return false;
> +  // The landingpad instruction is immobile.
> +  if (isa<LandingPadInst>(I))
> +    return false;
>     // Determine the insertion point, unless one was given.
>     if (!InsertPt) {
>       BasicBlock *Preheader = getLoopPreheader();
>
>
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