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Re-scheduling of the instructions according to the MMX pairing rules. This is dificult to quantify but the improvemnet reaches about of 0.7% in some cases in a Pentium III. In older Pentiums the improvements could be quite substancial due less capable integer pipelines.
This commit is contained in:
Jose Fonseca
parent
3fe2bb8933
commit
04df3bbe8e
1 changed files with 36 additions and 42 deletions
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@ -5,9 +5,6 @@
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#include "matypes.h"
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/* FIXME: The pairing rules must be checked as they aren't being fully obeyed.
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*/
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/* integer multiplication - alpha plus one
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*
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* makes the following approximation to the division (Sree)
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@ -24,9 +21,9 @@
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*/
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#define GMB_MULT_AP1( MP1, MA1, MP2, MA2, MX1 ) \
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PSUBW ( MX1, MA1 ) /* a1 + 1 | a1 + 1 | a1 + 1 | a1 + 1 */ ;\
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TWO(PSUBW ( MX1, MA2 )) /* a2 + 1 | a2 + 1 | a2 + 1 | a2 + 1 */ ;\
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;\
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PMULLW ( MP1, MA1 ) /* t1 = p1*a1 */ ;\
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;\
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TWO(PSUBW ( MX1, MA2 )) /* a2 + 1 | a2 + 1 | a2 + 1 | a2 + 1 */ ;\
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TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\
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;\
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PSRLW ( CONST(8), MA1 ) /* t1 >> 8 ~= t1/255 */ ;\
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@ -51,15 +48,15 @@ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 ~= t2/255
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TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\
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;\
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MOVQ ( MA1, MP1 ) ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\
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;\
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PSRLW ( CONST(8), MP1 ) /* t1 >> 8 */ ;\
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TWO(PSRLW ( CONST(8), MP2 )) /* t2 >> 8 */ ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\
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;\
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PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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;\
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PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\
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;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */
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@ -76,21 +73,21 @@ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2
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*/
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#define GMB_MULT_GSR( MP1, MA1, MP2, MA2, M80 ) \
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PMULLW ( MP1, MA1 ) /* t1 = p1*a1 */ ;\
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TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\
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;\
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PADDW ( M80, MA1 ) /* t1 += 0x80 */ ;\
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;\
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TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\
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TWO(PADDW ( M80, MA2 )) /* t2 += 0x80 */ ;\
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;\
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MOVQ ( MA1, MP1 ) ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\
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;\
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PSRLW ( CONST(8), MP1 ) /* t1 >> 8 */ ;\
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TWO(PSRLW ( CONST(8), MP2 )) /* t2 >> 8 */ ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\
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;\
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PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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;\
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PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\
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;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */
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@ -98,19 +95,18 @@ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2
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*/
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#define GMB_LERP_GS( MP1, MQ1, MA1, MP2, MQ2, MA2) \
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PSUBW ( MQ1, MP1 ) /* pa1 - qa1 | pb1 - qb1 | pg1 - qg1 | pr1 - qr1 */ ;\
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TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\
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;\
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PSLLW ( CONST(8), MQ1 ) /* q1 << 8 */ ;\
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TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\
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;\
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PMULLW ( MP1, MA1 ) /* t1 = (q1 - p1)*pa1 */ ;\
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;\
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TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\
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TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\
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TWO(PMULLW ( MP2, MA2 )) /* t2 = (q2 - p2)*pa2 */ ;\
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;\
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MOVQ ( MA1, MP1 ) ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\
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;\
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PSRLW ( CONST(8), MP1 ) /* t1 >> 8 */ ;\
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TWO(PSRLW ( CONST(8), MP2 )) /* t2 >> 8 */ ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\
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;\
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PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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@ -130,12 +126,11 @@ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2
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*/
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#define GMB_LERP_GSR( MP1, MQ1, MA1, MP2, MQ2, MA2, M80) \
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PSUBW ( MQ1, MP1 ) /* pa1 - qa1 | pb1 - qb1 | pg1 - qg1 | pr1 - qr1 */ ;\
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TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\
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;\
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PSLLW ( CONST(8), MQ1 ) /* q1 << 8 */ ;\
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TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\
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;\
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PMULLW ( MP1, MA1 ) /* t1 = (q1 - p1)*pa1 */ ;\
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;\
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TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\
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TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\
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TWO(PMULLW ( MP2, MA2 )) /* t2 = (q2 - p2)*pa2 */ ;\
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;\
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PSRLW ( CONST(15), MP1 ) /* q1 > p1 ? 1 : 0 */ ;\
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@ -151,10 +146,10 @@ TWO(PSUBW ( MP2, MA2 )) /* t2 -=? 0x100
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TWO(PADDW ( M80, MA2 )) /* t2 += 0x80 */ ;\
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;\
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MOVQ ( MA1, MP1 ) ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\
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;\
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PSRLW ( CONST(8), MP1 ) /* t1 >> 8 */ ;\
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TWO(PSRLW ( CONST(8), MP2 )) /* t2 >> 8 */ ;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\
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;\
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PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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@ -176,25 +171,24 @@ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2
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*/
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#define GMB_LERP_GSC( MP1, MQ1, MA1, MP2, MQ2, MA2) \
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PSUBW ( MQ1, MP1 ) /* pa1 - qa1 | pb1 - qb1 | pg1 - qg1 | pr1 - qr1 */ ;\
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TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\
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;\
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PSLLW ( CONST(8), MQ1 ) /* q1 << 8 */ ;\
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TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\
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;\
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PMULLW ( MP1, MA1 ) /* t1 = (q1 - p1)*pa1 */ ;\
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;\
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TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\
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TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\
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TWO(PMULLW ( MP2, MA2 )) /* t2 = (q2 - p2)*pa2 */ ;\
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;\
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MOVQ ( MA1, MP1 ) ;\
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PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\
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;\
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TWO(MOVQ ( MA2, MP2 )) ;\
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TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\
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;\
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PSRLW ( CONST(8), MP1 ) /* t1 >> 8 */ ;\
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TWO(PSRLW ( CONST(8), MP2 )) /* t2 >> 8 */ ;\
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PADDW ( MA1, MP1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\
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PSRLW ( CONST(7), MA1 ) /* t1 >> 15 */ ;\
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;\
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PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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;\
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PSRLW ( CONST(7), MP1 ) /* t1 >> 15 */ ;\
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TWO(PSRLW ( CONST(7), MP2 )) /* t2 >> 15 */ ;\
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TWO(PADDW ( MA2, MP2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\
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TWO(PSRLW ( CONST(7), MA2 )) /* t2 >> 15 */ ;\
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;\
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PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) + (t1 >>15) ~= (t1/255) << 8 */ ;\
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TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) + (t2 >>15) ~= (t2/255) << 8 */ ;\
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