[llvm] [AArch64] Neoverse V1 scheduling info (PR #126707)

[Ash Dobrescu via llvm-commits]

================
@@ -525,33 +640,48 @@ def V1Rd_BFMLA : SchedReadAdvance<2, [V1Wr_BFMLA]>;
 def V1Wr_CRC : SchedWriteRes<[V1UnitM0]> { let Latency = 2; }
 def V1Rd_CRC : SchedReadAdvance<1, [V1Wr_CRC]>;
 
-def V1Wr_ZDOTB : SchedWriteRes<[V1UnitV01]> { let Latency = 3; }
+def V1Wr_ZDOTB : SchedWriteRes<[V1UnitSVE01]> { let Latency = 3;
+						let NumMicroOps = 2;
+						let ReleaseAtCycles = [2]; }
 def V1Rd_ZDOTB : SchedReadAdvance<2, [V1Wr_ZDOTB]>;
 
-def V1Wr_ZUDOTB : SchedWriteRes<[V1UnitV]> { let Latency = 3; }
+def V1Wr_ZUDOTB : SchedWriteRes<[V1UnitV]> { let Latency = 3; let ReleaseAtCycles = [2]; }
 def V1Rd_ZUDOTB : SchedReadAdvance<2, [V1Wr_ZUDOTB]>;
 
-def V1Wr_ZDOTH : SchedWriteRes<[V1UnitV0]> { let Latency = 4; }
+def V1Wr_ZDOTH : SchedWriteRes<[V1UnitSVE0]> { let Latency = 4;
+					       let NumMicroOps = 2;
+					       let ReleaseAtCycles = [2]; }
 def V1Rd_ZDOTH : SchedReadAdvance<3, [V1Wr_ZDOTH]>;
 
 def V1Wr_ZMMA : SchedWriteRes<[V1UnitV01]> { let Latency = 3; }
 def V1Rd_ZMMA : SchedReadAdvance<2, [V1Wr_ZMMA]>;
 
-let Latency = 5, NumMicroOps = 2 in
-def V1Wr_ZMAD : SchedWriteRes<[V1UnitV0, V1UnitV0]>;
+def V1Wr_ZMABHS : SchedWriteRes<[V1UnitSVE0]> { let Latency = 4;
+						let NumMicroOps = 2;
+						let ReleaseAtCycles = [2]; }
+def V1Rd_ZMABHS : SchedReadAdvance<2, [V1Wr_ZMABHS]>;
+
+def V1Wr_ZMAD : SchedWriteRes<[V1UnitSVE0]> { let Latency = 5;
+					      let NumMicroOps = 2;
+					      let ReleaseAtCycles = [4]; }
 def V1Rd_ZMAD : SchedReadAdvance<3, [V1Wr_ZMAD]>;
 
-def V1Wr_ZFCMA : SchedWriteRes<[V1UnitV01]> { let Latency = 5; }
+def V1Wr_ZFCMA : SchedWriteRes<[V1UnitSVE01,V1UnitSVE01]> { let Latency = 5;
+							    let NumMicroOps = 2; }
 def V1Rd_ZFCMA : SchedReadAdvance<3, [V1Wr_ZFCMA]>;
 
-def V1Wr_ZFMA : SchedWriteRes<[V1UnitV01]> { let Latency = 4; }
+def V1Wr_ZFMA : SchedWriteRes<[V1UnitSVE01,V1UnitSVE01]> { let Latency = 4;
+							   let NumMicroOps = 2; }
----------------
Rin18 wrote:

>From what I can see you have aded `let NumMicroOps = 2` to most SVE forwarded types. Could you explain where this comes from? I'd expect those instructions to use one microOp.

https://github.com/llvm/llvm-project/pull/126707