diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2025-02-12 10:12:20 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-02-12 10:12:20 +0000 |
| commit | f73ed3d4346c37292fbee99361a904e371d1d9eb (patch) | |
| tree | 4349cdc995600b3226a7aa12e0b57a02172d276e /llvm/lib/CodeGen/MachineModuleSlotTracker.cpp | |
| parent | 32faf438785ec5d7b3d2d605ae30ee6ab337a163 (diff) | |
| download | llvm-f73ed3d4346c37292fbee99361a904e371d1d9eb.zip llvm-f73ed3d4346c37292fbee99361a904e371d1d9eb.tar.gz llvm-f73ed3d4346c37292fbee99361a904e371d1d9eb.tar.bz2 | |
[X86] lowerShuffleAsBroadcast - use isShuffleEquivalent to search for a hidden broadcast pattern (#126517)
lowerShuffleAsBroadcast only matches a known-splat shuffle mask, but we
can use the isShuffleEquivalent/IsElementEquivalent helpers to attempt
to find a hidden broadcast-able shuffle pattern.
This requires an extension to IsElementEquivalent to peek through
bitcasts to match against wider shuffles - these typically appear during
shuffle lowering where we've widened a preceding shuffle, often to a
vector concatenation etc.
Amazingly I hit this while yak shaving #126033 .......
Diffstat (limited to 'llvm/lib/CodeGen/MachineModuleSlotTracker.cpp')
0 files changed, 0 insertions, 0 deletions