[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();
+}
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Unforturnately there are platforms where this isn't sufficient. I believe ARM is one of them.
https://reviews.llvm.org/D29153
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