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| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2017-01-08 17:41:10 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2017-01-08 17:41:10 +0100 |
| commit | c67d0c699f7b52da534f75d3620776997b1e8d52 (patch) | |
| tree | 0e0ccb907b812f2e4831dea1735f6554f0eeb621 /rc | |
| parent | 28089ee035e8502ed03225c3850070c0c2882ae6 (diff) | |
| download | plan9front-c67d0c699f7b52da534f75d3620776997b1e8d52.tar.xz | |
6c: reverse register allocation order to avoid having to spill AX,DX and CX
allocating AX,CX,DX last improves 64-bit multiplication-add
chains like a*b + c*d as the multiplication does not need to save
and restore AX and DX registers in most cases. reserving CX for
shifts also helps.
Diffstat (limited to 'rc')
0 files changed, 0 insertions, 0 deletions