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authorMatt Turner <[email protected]>2013-10-20 11:38:17 -0700
committerMatt Turner <[email protected]>2013-10-30 19:49:27 -0700
commitb16b3c8703f198ca0f025b730d582600df79c19c (patch)
tree1b4aa59b1807f9ca3ee4f2d054f26cbe61a2070e /docs
parent219b43c612b2882e0bf82ac1a12ff073a42be6e1 (diff)
i965/fs: Perform CSE on CMP(N) instructions.
Optimizes cmp.ge.f0(8) null g45<8,8,1>F 0F (+f0) sel(8) g50<1>F g40<8,8,1>F g10<8,8,1>F cmp.ge.f0(8) null g45<8,8,1>F 0F (+f0) sel(8) g51<1>F g41<8,8,1>F g11<8,8,1>F cmp.ge.f0(8) null g45<8,8,1>F 0F (+f0) sel(8) g52<1>F g42<8,8,1>F g12<8,8,1>F cmp.ge.f0(8) null g45<8,8,1>F 0F (+f0) sel(8) g53<1>F g43<8,8,1>F g13<8,8,1>F into cmp.ge.f0(8) null g45<8,8,1>F 0F (+f0) sel(8) g50<1>F g40<8,8,1>F g10<8,8,1>F (+f0) sel(8) g51<1>F g41<8,8,1>F g11<8,8,1>F (+f0) sel(8) g52<1>F g42<8,8,1>F g12<8,8,1>F (+f0) sel(8) g53<1>F g43<8,8,1>F g13<8,8,1>F total instructions in shared programs: 1644938 -> 1638181 (-0.41%) instructions in affected programs: 574955 -> 568198 (-1.18%) Two more 16-wide programs (in L4D2). Some large (-9%) decreases in instruction count in some of Valve's Source Engine games. No regressions. Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Paul Berry <[email protected]>
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