From: Evandro Menezes <e.menezes@samsung.com>
Date: Mon, 24 Jul 2017 18:06:16 +0000 (+0000)
Subject: [AArch64] Adjust the cost model for Exynos M1 and M2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a0d8266d36429cd6feb3b01306d6778b9d13539c;p=llvm

[AArch64] Adjust the cost model for Exynos M1 and M2

Fine tune the resources in a couple of ASIMD loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308904 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/AArch64/AArch64SchedM1.td b/lib/Target/AArch64/AArch64SchedM1.td
index 1cb15b9573f..739fbcf4472 100644
--- a/lib/Target/AArch64/AArch64SchedM1.td
+++ b/lib/Target/AArch64/AArch64SchedM1.td
@@ -135,24 +135,20 @@ def : SchedAlias<WriteSTIdx, M1WriteSX>;
 
 // FP data instructions.
 def : WriteRes<WriteF,    [M1UnitFADD]>  { let Latency = 3; }
-// TODO: FCCMP is much different.
 def : WriteRes<WriteFCmp, [M1UnitNMISC]> { let Latency = 4; }
 def : WriteRes<WriteFDiv, [M1UnitFVAR]>  { let Latency = 15;
                                            let ResourceCycles = [15]; }
 def : WriteRes<WriteFMul, [M1UnitFMAC]>  { let Latency = 4; }
 
 // FP miscellaneous instructions.
-// TODO: Conversion between register files is much different.
 def : WriteRes<WriteFCvt,  [M1UnitFCVT]> { let Latency = 3; }
 def : WriteRes<WriteFImm,  [M1UnitNALU]> { let Latency = 1; }
 def : WriteRes<WriteFCopy, [M1UnitS]>    { let Latency = 4; }
 
 // FP load instructions.
-// TODO: ASIMD loads are much different.
 def : WriteRes<WriteVLD, [M1UnitL]> { let Latency = 5; }
 
 // FP store instructions.
-// TODO: ASIMD stores are much different.
 def : WriteRes<WriteVST, [M1UnitS, M1UnitFST]> { let Latency = 1; }
 
 // ASIMD FP instructions.
@@ -216,6 +212,7 @@ def M1WriteFCVT3   : SchedWriteRes<[M1UnitFCVT]>   { let Latency = 3; }
 def M1WriteFCVT4   : SchedWriteRes<[M1UnitFCVT]>   { let Latency = 4; }
 def M1WriteFMAC4   : SchedWriteRes<[M1UnitFMAC]>   { let Latency = 4; }
 def M1WriteFMAC5   : SchedWriteRes<[M1UnitFMAC]>   { let Latency = 5; }
+// TODO
 def M1WriteFVAR15  : SchedWriteRes<[M1UnitFVAR]>   { let Latency = 15;
                                                      let ResourceCycles = [15]; }
 def M1WriteFVAR23  : SchedWriteRes<[M1UnitFVAR]>   { let Latency = 23;
@@ -275,11 +272,13 @@ def M1WriteVLDK    : SchedWriteRes<[M1UnitL,
 def M1WriteVLDL    : SchedWriteRes<[M1UnitL,
                                     M1UnitNALU,
                                     M1UnitNALU,
+                                    M1UnitL,
                                     M1UnitNALU]>   { let Latency = 7;
                                                      let ResourceCycles = [2]; }
 def M1WriteVLDM    : SchedWriteRes<[M1UnitL,
                                     M1UnitNALU,
                                     M1UnitNALU,
+                                    M1UnitL,
                                     M1UnitNALU,
                                     M1UnitNALU]>   { let Latency = 7;
                                                      let ResourceCycles = [2]; }