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[PowerPC] VSX instruction latency corrections 

The vector divide and sqrt instructions have high latencies, and the scalar
comparisons are like all of the others. On the P7, permutations take an extra
cycle over purely-simple vector ops.

llvm-svn: 205096
This commit is contained in:
Hal Finkel 2014-03-29 13:20:31 +00:00
parent 336f189b61
commit e8fba98735
2 changed files with 15 additions and 15 deletions
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28
llvm/lib/Target/PowerPC/PPCInstrVSX.td
View File

@ -326,11 +326,11 @@ let Uses = [RM] in {
// Division Instructions
def XSDIVDP : XX3Form<60, 56,
(outs vsfrc:$XT), (ins vsfrc:$XA, vsfrc:$XB),
"xsdivdp $XT, $XA, $XB", IIC_VecFP,
"xsdivdp $XT, $XA, $XB", IIC_FPDivD,
[(set f64:$XT, (fdiv f64:$XA, f64:$XB))]>;
def XSSQRTDP : XX2Form<60, 75,
(outs vsfrc:$XT), (ins vsfrc:$XB),
"xssqrtdp $XT, $XB", IIC_VecFP,
"xssqrtdp $XT, $XB", IIC_FPSqrtD,
[(set f64:$XT, (fsqrt f64:$XB))]>;
def XSREDP : XX2Form<60, 90,
@ -344,42 +344,42 @@ let Uses = [RM] in {
def XSTDIVDP : XX3Form_1<60, 61,
(outs crrc:$crD), (ins vsfrc:$XA, vsfrc:$XB),
"xstdivdp $crD, $XA, $XB", IIC_VecFP, []>;
"xstdivdp $crD, $XA, $XB", IIC_FPCompare, []>;
def XSTSQRTDP : XX2Form_1<60, 106,
(outs crrc:$crD), (ins vsfrc:$XB),
"xstsqrtdp $crD, $XB", IIC_VecFP, []>;
"xstsqrtdp $crD, $XB", IIC_FPCompare, []>;
def XVDIVDP : XX3Form<60, 120,
(outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
"xvdivdp $XT, $XA, $XB", IIC_VecFP,
"xvdivdp $XT, $XA, $XB", IIC_FPDivD,
[(set v2f64:$XT, (fdiv v2f64:$XA, v2f64:$XB))]>;
def XVDIVSP : XX3Form<60, 88,
(outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
"xvdivsp $XT, $XA, $XB", IIC_VecFP,
"xvdivsp $XT, $XA, $XB", IIC_FPDivS,
[(set v4f32:$XT, (fdiv v4f32:$XA, v4f32:$XB))]>;
def XVSQRTDP : XX2Form<60, 203,
(outs vsrc:$XT), (ins vsrc:$XB),
"xvsqrtdp $XT, $XB", IIC_VecFP,
"xvsqrtdp $XT, $XB", IIC_FPSqrtD,
[(set v2f64:$XT, (fsqrt v2f64:$XB))]>;
def XVSQRTSP : XX2Form<60, 139,
(outs vsrc:$XT), (ins vsrc:$XB),
"xvsqrtsp $XT, $XB", IIC_VecFP,
"xvsqrtsp $XT, $XB", IIC_FPSqrtS,
[(set v4f32:$XT, (fsqrt v4f32:$XB))]>;
def XVTDIVDP : XX3Form_1<60, 125,
(outs crrc:$crD), (ins vsrc:$XA, vsrc:$XB),
"xvtdivdp $crD, $XA, $XB", IIC_VecFP, []>;
"xvtdivdp $crD, $XA, $XB", IIC_FPCompare, []>;
def XVTDIVSP : XX3Form_1<60, 93,
(outs crrc:$crD), (ins vsrc:$XA, vsrc:$XB),
"xvtdivsp $crD, $XA, $XB", IIC_VecFP, []>;
"xvtdivsp $crD, $XA, $XB", IIC_FPCompare, []>;
def XVTSQRTDP : XX2Form_1<60, 234,
(outs crrc:$crD), (ins vsrc:$XB),
"xvtsqrtdp $crD, $XB", IIC_VecFP, []>;
"xvtsqrtdp $crD, $XB", IIC_FPCompare, []>;
def XVTSQRTSP : XX2Form_1<60, 170,
(outs crrc:$crD), (ins vsrc:$XB),
"xvtsqrtsp $crD, $XB", IIC_VecFP, []>;
"xvtsqrtsp $crD, $XB", IIC_FPCompare, []>;
def XVREDP : XX2Form<60, 218,
(outs vsrc:$XT), (ins vsrc:$XB),
@ -402,10 +402,10 @@ let Uses = [RM] in {
// Compare Instructions
def XSCMPODP : XX3Form_1<60, 43,
(outs crrc:$crD), (ins vsfrc:$XA, vsfrc:$XB),
"xscmpodp $crD, $XA, $XB", IIC_VecFPCompare, []>;
"xscmpodp $crD, $XA, $XB", IIC_FPCompare, []>;
def XSCMPUDP : XX3Form_1<60, 35,
(outs crrc:$crD), (ins vsfrc:$XA, vsfrc:$XB),
"xscmpudp $crD, $XA, $XB", IIC_VecFPCompare, []>;
"xscmpudp $crD, $XA, $XB", IIC_FPCompare, []>;
defm XVCMPEQDP : XX3Form_Rcr<60, 99,
(outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),

2
llvm/lib/Target/PowerPC/PPCScheduleP7.td
View File

@ -370,7 +370,7 @@ def P7Itineraries : ProcessorItineraries<
InstrItinData<IIC_VecPerm , [InstrStage<1, [P7_DU1, P7_DU2,
P7_DU3, P7_DU4], 0>,
InstrStage<1, [P7_VS2]>],
[2, 1, 1]>
[3, 1, 1]>
]>;
// ===---------------------------------------------------------------------===//