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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-02-25 11:19:37 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-02-25 11:19:37 +0000 |
| commit | c61f1e8e6cda9afad8b2b4cd6e95f814ca82685c (patch) | |
| tree | 77c28f237f5e609739483bab6ad0cedf30153ccc /llvm/lib/Transforms | |
| parent | fd99780c0941c7576bb271d7e58e6553afe9db00 (diff) | |
| download | bcm5719-llvm-c61f1e8e6cda9afad8b2b4cd6e95f814ca82685c.tar.gz bcm5719-llvm-c61f1e8e6cda9afad8b2b4cd6e95f814ca82685c.zip | |
[X86] Merge ISD::ADD/SUB nodes into X86ISD::ADD/SUB equivalents (PR40483)
Avoid ADD/SUB instruction duplication by reusing the X86ISD::ADD/SUB results.
Includes ADD commutation - I tried to include NEG+SUB SUB commutation as well but this causes regressions as we don't have good combine coverage to simplify X86ISD::SUB.
Differential Revision: https://reviews.llvm.org/D58597
llvm-svn: 354771
Diffstat (limited to 'llvm/lib/Transforms')
0 files changed, 0 insertions, 0 deletions
