[PATCH] D30712: [JumpThread] Try to fold SwitchInst before attempting to jumpthread it

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: lib/Transforms/Scalar/JumpThreading.cpp:810
+    // Switch(i1) will be converted to CondBr by SimplifyCFG and therefore
+    // handled by the CondBr folding here..
     BranchInst *CondBr = dyn_cast<BranchInst>(BB->getTerminator());
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I think the original comment was suggesting that jump threading could use getConstantRange or something like that to prune impossible switch destinations.


https://reviews.llvm.org/D30712