[PATCH] D30416: [BitfieldShrinking] Shrink Bitfields load/store when the bitfields are legal to access independently

[Chandler Carruth via llvm-commits]

Sorry for delay, just taking me a while to make it all the way through.
Really hoping to finish today.

On Tue, May 9, 2017 at 4:02 PM Wei Mi via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> Ping.
>
> On Fri, Apr 28, 2017 at 4:20 PM, Wei Mi via Phabricator
> <reviews at reviews.llvm.org> wrote:
> > wmi updated this revision to Diff 97170.
> > wmi added a comment.
> > Herald added a subscriber: nhaehnle.
> >
> > Address Eli, Matt and Chandler's comments.
> >
> > Some major changes:
> >
> > - A lot of comments changed.
> > - split reduceLoadOpsStoreWidth into two and several other helper
> functions.
> > - refactor RecursivelyDeleteTriviallyDeadInstructions.
> >
> >
> > Repository:
> >   rL LLVM
> >
> > https://reviews.llvm.org/D30416
> >
> > Files:
> >   include/llvm/Analysis/MemorySSAUpdater.h
> >   include/llvm/CodeGen/Passes.h
> >   include/llvm/IR/PatternMatch.h
> >   include/llvm/InitializePasses.h
> >   include/llvm/LinkAllPasses.h
> >   include/llvm/Target/TargetLowering.h
> >   include/llvm/Transforms/Utils/Local.h
> >   lib/Analysis/MemorySSAUpdater.cpp
> >   lib/CodeGen/CMakeLists.txt
> >   lib/CodeGen/CodeGen.cpp
> >   lib/CodeGen/MemAccessShrinking.cpp
> >   lib/CodeGen/TargetPassConfig.cpp
> >   lib/Target/AMDGPU/AMDGPUISelLowering.cpp
> >   lib/Target/AMDGPU/AMDGPUISelLowering.h
> >   lib/Transforms/Utils/Local.cpp
> >   test/CodeGen/ARM/illegal-bitfield-loadstore.ll
> >   test/CodeGen/ARM/load-shrink.ll
> >   test/CodeGen/ARM/store-shrink.ll
> >   test/CodeGen/X86/2008-09-11-CoalescerBug2.ll
> >   test/CodeGen/X86/constant-combines.ll
> >   test/CodeGen/X86/i16lshr8pat.ll
> >   test/CodeGen/X86/illegal-bitfield-loadstore.ll
> >   test/CodeGen/X86/load-shrink.ll
> >   test/CodeGen/X86/load-slice.ll
> >   test/CodeGen/X86/lsr-loop-exit-cond.ll
> >   test/CodeGen/X86/mem-access-shrink.ll
> >   test/CodeGen/X86/store-shrink.ll
> >   tools/opt/opt.cpp
> >
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