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84fca61ca5
This revision attempts to recognize following population-count pattern:
while(a) { c++; ... ; a &= a - 1; ... },
where <c> and <a>could be used multiple times in the loop body.
TODO: On X8664 and ARM, __buildin_ctpop() are not expanded to a efficent
instruction sequence, which need to be improved in the following commits.
Reviewed by Nadav, really appreciate!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168931 91177308-0d34-0410-b5e6-96231b3b80d8
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| AsmParser | ||
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| DebugInfo | ||
| ExecutionEngine | ||
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| MC | ||
| Object | ||
| Support | ||
| TableGen | ||
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| VMCore | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||
| Makefile | ||