[PATCH] D22696: [CodeGenPrep] Skip merging empty case blocks
Jun Bum Lim via llvm-commits
llvm-commits at lists.llvm.org
Fri Aug 12 08:54:56 PDT 2016
junbuml updated this revision to Diff 67840.
junbuml marked 5 inline comments as done.
junbuml added a comment.
Sorry for the long trip time on this. First, I make the test case very simple as Renato commented. I also make this applied conservatively because a branch instruction could be added in the empty case block. So, this will happen only when the frequency of empty case block is significantly lower than the frequency of header of switch.
Please take a look and let me know any comment.
Thanks,
Jun
https://reviews.llvm.org/D22696
Files:
lib/CodeGen/CodeGenPrepare.cpp
test/Transforms/CodeGenPrepare/skip-merging-case-block.ll
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