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[X86] Use SARX/SHLX/SHLX instructions for (shift x (and y, (BitWidth-1)))
authorCraig Topper <craig.topper@intel.com>
Thu, 20 Jul 2017 06:19:55 +0000 (06:19 +0000)
committerCraig Topper <craig.topper@intel.com>
Thu, 20 Jul 2017 06:19:55 +0000 (06:19 +0000)
commitebd67f5058bd08516ff4c394cfb9f0dbc4e9e31e
treea8c906b50595e639c55a5c842811ea8b0285fedctree | snapshot
parentab9c5863f30e84caf1d6c0a73005ff85e19cf9b7commit | diff
[X86] Use SARX/SHLX/SHLX instructions for (shift x (and y, (BitWidth-1)))

Fixes PR33841.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308591 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86InstrCompiler.td diff | blob | history
test/CodeGen/X86/pr32329.ll diff | blob | history
test/CodeGen/X86/shift-bmi2.ll diff | blob | history
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