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...ng up all of them, I guess my pass is still worth trying (it catches all these cases), as long as it's ultimately "melt into" two-address ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160325/dcc19e11/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: bridge-no-commit.diff Type: application/octet-stream Size: 10238 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160325/dcc19e11/attachment.obj> -----...

I think we can probably go ahead and throw this up on Phabricator for review. I'd probably bring in Matthias for review as well. Thanks! -eric On Wed, Mar 16, 2016 at 10:53 AM Tim Shen <timshen at google.com> wrote: > I implemented a proof of concept of a new generic MachineFunction SSA > pass. The code is not readable and not efficient yet, but it shows > interesting

I implemented a proof of concept of a new generic MachineFunction SSA pass. The code is not readable and not efficient yet, but it shows interesting results: In fma.ll @test_FMSUB2 (return dummy(A * B + C, A * B - D)): before: fmr 0, 1 xsmaddadp 3, 0, 2 xsmsubmdp 0, 2, 4 fmr 1, 3 fmr 2, 0 bl dummy2 after: xsmsubadp 4, 1, 2 xsmaddmdp