[PATCH] D29153: [BranchFolding] Tail common all identical unreachable blocks

Kyle Butt via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Jan 30 15:04:49 PST 2017

iteratee added inline comments.

Comment at: lib/CodeGen/BranchFolding.cpp:521
+static bool blockEndsInUnreachable(const MachineBasicBlock *MBB) {
+  return MBB->succ_empty() && !MBB->isReturnBlock();
Unforturnately there are platforms where this isn't sufficient. I believe ARM is one of them.


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