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[APInt] Cleanup the reverseBits slow case a little.
authorCraig Topper <craig.topper@gmail.com>
Tue, 18 Apr 2017 05:02:21 +0000 (05:02 +0000)
committerCraig Topper <craig.topper@gmail.com>
Tue, 18 Apr 2017 05:02:21 +0000 (05:02 +0000)
commit0f06c8216fc07d8766fa5711bb162f0482ee171c
tree00cae23f84ba619e2f88981ac7e2fd5a3ad3308ctree | snapshot
parent4bf2830a0102e7accd195127b1d7bf9b4a364ab0commit | diff
[APInt] Cleanup the reverseBits slow case a little.

Use lshrInPlace. Use single bit extract and operator|=(uint64_t) to avoid a few temporary APInts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300527 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Support/APInt.cpp diff | blob | history
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