[PATCH] D158609: [LICM][LoopSimplify] Create preheader for callbr (PR64215)

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers added inline comments.


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Comment at: llvm/lib/IR/BasicBlock.cpp:400
   // Instructions should not be hoisted across exception handling boundaries.
-  return !Term->isExceptionalTerminator();
+  // Also don't hoist across callbr, which produces a value.
+  return !Term->isExceptionalTerminator() && !isa<CallBrInst>(Term);
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Note: a `callbr` may produce a value, but that's optional.  It's perhaps more common at the moment that callbr does not produce a value.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158609/new/

https://reviews.llvm.org/D158609