[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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205096 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCInstrVSX.td b/lib/Target/PowerPC/PPCInstrVSX.td
index 14f2e46..9fdfacf 100644 (file)
--- a/lib/Target/PowerPC/PPCInstrVSX.td
+++ b/lib/Target/PowerPC/PPCInstrVSX.td
@@ -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),

diff --git a/lib/Target/PowerPC/PPCScheduleP7.td b/lib/Target/PowerPC/PPCScheduleP7.td
index a3670a5..04d37e4 100644 (file)
--- a/lib/Target/PowerPC/PPCScheduleP7.td
+++ b/lib/Target/PowerPC/PPCScheduleP7.td
@@ -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]>
 ]>;
 
 // ===---------------------------------------------------------------------===//