[AArch64] Refine Kryo Machine Model

[bmakam]

Summary

Refine floating point SQRT and DIV with accurate latency information.

[mcrosier]

LGTM.

llvm/trunk/lib/Target/AArch64/AArch64SchedKryoDetails.td

 def : InstRW<[KryoWrite_4cyc_X_noRSV_111ln],
   (instregex "FCVTZ(S|U)(v2f32|v1i32|v1i64|v2i32(_shift)?)$")>;
 def KryoWrite_4cyc_X_X_115ln :
   SchedWriteRes<[KryoUnitX, KryoUnitX]> {
   let Latency = 4; let NumMicroOps = 2;
 }
 def : InstRW<[KryoWrite_4cyc_X_X_115ln],
   (instregex "FCVTZ(S|U)(v2f64|v4f32|(v2i64|v4i32)(_shift)?)$")>;
-def KryoWrite_1cyc_XA_Y_noRSV_43ln :
+def KryoWrite_10cyc_XA_Y_noRSV_43ln :
   SchedWriteRes<[KryoUnitXA, KryoUnitY]> {
-  let Latency = 1; let NumMicroOps = 3;
+  let Latency = 10; let NumMicroOps = 3;
 }
-def : InstRW<[KryoWrite_1cyc_XA_Y_noRSV_43ln],
-  (instrs FDIVDrr, FDIVSrr)>;
-def KryoWrite_1cyc_XA_Y_noRSV_121ln :
+def : InstRW<[KryoWrite_10cyc_XA_Y_noRSV_43ln],
+  (instrs FDIVSrr)>;
+def KryoWrite_14cyc_XA_Y_noRSV_43ln :
   SchedWriteRes<[KryoUnitXA, KryoUnitY]> {
-  let Latency = 1; let NumMicroOps = 3;
+  let Latency = 14; let NumMicroOps = 3;
 }
-def : InstRW<[KryoWrite_1cyc_XA_Y_noRSV_121ln],
+def : InstRW<[KryoWrite_14cyc_XA_Y_noRSV_43ln],
+  (instrs FDIVDrr)>;
+def KryoWrite_10cyc_XA_Y_noRSV_121ln :
+  SchedWriteRes<[KryoUnitXA, KryoUnitY]> {
+  let Latency = 10; let NumMicroOps = 3;
+}
+def : InstRW<[KryoWrite_10cyc_XA_Y_noRSV_121ln],
   (instrs FDIVv2f32)>;
-def KryoWrite_1cyc_XA_Y_XA_Y_123ln :
+def KryoWrite_14cyc_XA_Y_XA_Y_123ln :
   SchedWriteRes<[KryoUnitXA, KryoUnitY, KryoUnitXA, KryoUnitY]> {
-  let Latency = 1; let NumMicroOps = 4;
+  let Latency = 14; let NumMicroOps = 4;
 }
-def : InstRW<[KryoWrite_1cyc_XA_Y_XA_Y_123ln],
+def : InstRW<[KryoWrite_14cyc_XA_Y_XA_Y_123ln],
   (instrs FDIVv2f64, FDIVv4f32)>;
 def KryoWrite_5cyc_X_noRSV_55ln :
   SchedWriteRes<[KryoUnitX]> {
   let Latency = 5; let NumMicroOps = 2;
 }
 def : InstRW<[KryoWrite_5cyc_X_noRSV_55ln],
   (instregex "FN?M(ADD|SUB)Srrr")>;
 def KryoWrite_6cyc_X_noRSV_57ln :

 def : InstRW<[KryoWrite_2cyc_XY_noRSV_108ln],
   (instregex "FRINT(A|I|M|N|P|X|Z)v2f32")>;
 def KryoWrite_2cyc_XY_XY_109ln :
   SchedWriteRes<[KryoUnitXY, KryoUnitXY]> {
   let Latency = 2; let NumMicroOps = 2;
 }
 def : InstRW<[KryoWrite_2cyc_XY_XY_109ln],
   (instregex "FRINT(A|I|M|N|P|X|Z)(v2f64|v4f32)")>;
-def KryoWrite_1cyc_XA_Y_noRSV_42ln :
+def KryoWrite_12cyc_XA_Y_noRSV_42ln :
   SchedWriteRes<[KryoUnitXA, KryoUnitY]> {
-  let Latency = 1; let NumMicroOps = 3;
+  let Latency = 12; let NumMicroOps = 3;
 }
-def : InstRW<[KryoWrite_1cyc_XA_Y_noRSV_42ln],
-  (instregex "FSQRT(S|D)r")>;
-def KryoWrite_1cyc_XA_Y_noRSV_120ln :
+def : InstRW<[KryoWrite_12cyc_XA_Y_noRSV_42ln],
+  (instrs FSQRTSr)>;
+def KryoWrite_21cyc_XA_Y_noRSV_42ln :
   SchedWriteRes<[KryoUnitXA, KryoUnitY]> {
-  let Latency = 1; let NumMicroOps = 3;
+  let Latency = 21; let NumMicroOps = 3;
+}
+def : InstRW<[KryoWrite_21cyc_XA_Y_noRSV_42ln],
+  (instrs FSQRTDr)>;
+def KryoWrite_12cyc_XA_Y_noRSV_120ln :
+  SchedWriteRes<[KryoUnitXA, KryoUnitY]> {
+  let Latency = 12; let NumMicroOps = 3;
+}
+def : InstRW<[KryoWrite_12cyc_XA_Y_noRSV_120ln],
+  (instrs FSQRTv2f32)>;
+def KryoWrite_21cyc_XA_Y_XA_Y_122ln :
+  SchedWriteRes<[KryoUnitXA, KryoUnitY, KryoUnitXA, KryoUnitY]> {
+  let Latency = 21; let NumMicroOps = 4;
 }
-def : InstRW<[KryoWrite_1cyc_XA_Y_noRSV_120ln],
-  (instregex "FSQRTv2f32")>;
-def KryoWrite_1cyc_XA_Y_XA_Y_122ln :
+def : InstRW<[KryoWrite_21cyc_XA_Y_XA_Y_122ln],
+  (instrs FSQRTv4f32)>;
+def KryoWrite_36cyc_XA_Y_XA_Y_122ln :
   SchedWriteRes<[KryoUnitXA, KryoUnitY, KryoUnitXA, KryoUnitY]> {
-  let Latency = 1; let NumMicroOps = 4;
+  let Latency = 36; let NumMicroOps = 4;
 }
-def : InstRW<[KryoWrite_1cyc_XA_Y_XA_Y_122ln],
-  (instregex "FSQRT(v2f64|v4f32)")>;
+def : InstRW<[KryoWrite_36cyc_XA_Y_XA_Y_122ln],
+  (instrs FSQRTv2f64)>;
 def KryoWrite_1cyc_X_201ln :
   SchedWriteRes<[KryoUnitX]> {
   let Latency = 1; let NumMicroOps = 1;
 }
 def : InstRW<[KryoWrite_1cyc_X_201ln],
   (instregex "INSv.*")>;
 def KryoWrite_3cyc_LS_255ln :
   SchedWriteRes<[KryoUnitLS]> {