AMDGPU: Correct cycle counts for f64 mfma on gfx940/gfx90a

The manual states these are 4 and 8 pass instructions. I'm also
not sure if reporting these as using VALU and not XDL resource is
correct. The Latency and ReleaseAtCycles values were also mismatched,
which I'm also not sure was intentional or not.

Author: arsenm

llvm/lib/Target/AMDGPU/SISchedule.td

@@ -165,8 +165,10 @@ multiclass SICommonWriteRes {
   def : HWVALUWriteRes<WriteTrans32,       4>;
   def : HWVALUWriteRes<WriteQuarterRate32, 4>;
 
+  let ReleaseAtCycles = [4] in
   def : HWVALUWriteRes<Write4PassDGEMM,    4>;
-  def : HWVALUWriteRes<Write8PassDGEMM,   16>;
+  let ReleaseAtCycles = [8] in
+  def : HWVALUWriteRes<Write8PassDGEMM,    8>;
 
   let ReleaseAtCycles = [2] in
   def : HWWriteRes<Write2PassMAI,  [HWXDL], 2>;

llvm/test/CodeGen/AMDGPU/mai-hazards-gfx90a.mir

@@ -481,8 +481,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_vgpr_flat_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 1
+# GCN-NEXT: S_NOP 2
 # GCN-NEXT: FLAT_STORE_DWORD
 name:            dmfma16x16_write_vgpr_flat_read
 body:             |
@@ -1219,8 +1218,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_agpr_flat_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 1
+# GCN-NEXT: S_NOP 2
 # GCN-NEXT: FLAT_STORE_DWORD
 name:            dmfma16x16_write_agpr_flat_read
 body:             |

llvm/test/CodeGen/AMDGPU/mai-hazards-gfx940.mir

@@ -749,7 +749,6 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_vgpr_flat_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 7
 # GCN-NEXT: S_NOP 1
 # GCN-NEXT: FLAT_STORE_DWORD
 name:            dmfma16x16_write_vgpr_flat_read
@@ -804,7 +803,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_vgpr_valu_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 2
+# GCN-NEXT: S_NOP 1
 # GCN-NEXT: V_MOV_B32
 name:            dmfma16x16_write_vgpr_valu_read
 body:             |
@@ -868,7 +867,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_vgpr_dot_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 2
+# GCN-NEXT: S_NOP 1
 # GCN-NEXT: V_DOT
 name:            dmfma16x16_write_vgpr_dot_read
 body:             |
@@ -988,7 +987,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_vgpr_valu_write
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 2
+# GCN-NEXT: S_NOP 1
 # GCN-NEXT: V_MOV_B32
 name:            dmfma16x16_write_vgpr_valu_write
 body:             |
@@ -1484,7 +1483,6 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_agpr_flat_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 7
 # GCN-NEXT: S_NOP 1
 # GCN-NEXT: FLAT_STORE_DWORD
 name:            dmfma16x16_write_agpr_flat_read
@@ -1506,7 +1504,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_agpr_valu_read
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 2
+# GCN-NEXT: S_NOP 1
 # GCN-NEXT: V_ACCVGPR_READ_B32_e64
 name:            dmfma16x16_write_agpr_valu_read
 body:             |
@@ -1527,7 +1525,7 @@ body:             |
 # GCN-LABEL: name: dmfma16x16_write_agpr_valu_write
 # GCN:      V_MFMA
 # GCN-NEXT: S_NOP 7
-# GCN-NEXT: S_NOP 2
+# GCN-NEXT: S_NOP 1
 # GCN-NEXT: V_ACCVGPR_WRITE_B32_e64
 name:            dmfma16x16_write_agpr_valu_write
 body:             |

llvm/test/tools/llvm-mca/AMDGPU/gfx90a-mfma.s

@@ -0,0 +1,38 @@
+# RUN: llvm-mca -mtriple=amdgcn -mcpu=gfx90a --timeline --iterations=1 --timeline-max-cycles=0 < %s | FileCheck %s
+
+# CHECK: Instruction Info:
+# CHECK-NEXT: [1]: #uOps
+# CHECK-NEXT: [2]: Latency
+# CHECK-NEXT: [3]: RThroughput
+# CHECK-NEXT: [4]: MayLoad
+# CHECK-NEXT: [5]: MayStore
+# CHECK-NEXT: [6]: HasSideEffects (U)
+
+# CHECK:     [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
+# CHECK-NEXT: 1      8     4.00                  U     v_mfma_f64_4x4x4f64 a[0:1], v[0:1], v[2:3], a[0:1]
+# CHECK-NEXT: 1      8     4.00                  U     v_mfma_f64_4x4x4f64 v[0:1], v[0:1], v[2:3], v[0:1]
+# CHECK-NEXT: 1      12    8.00                  U     v_mfma_f64_16x16x4f64 a[0:7], v[0:1], v[2:3], a[0:7]
+# CHECK-NEXT: 1      12    8.00                  U     v_mfma_f64_16x16x4f64 v[0:7], v[0:1], v[2:3], v[0:7]
+
+
+# CHECK: Resources:
+# CHECK-NEXT: [0]   - HWBranch
+# CHECK-NEXT: [1]   - HWExport
+# CHECK-NEXT: [2]   - HWLGKM
+# CHECK-NEXT: [3]   - HWSALU
+# CHECK-NEXT: [4]   - HWVALU
+# CHECK-NEXT: [5]   - HWVMEM
+# CHECK-NEXT: [6]   - HWXDL
+
+# CHECK:     [0]    [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
+# CHECK-NEXT: -      -      -      -     4.00    -      -     v_mfma_f64_4x4x4f64 a[0:1], v[0:1], v[2:3], a[0:1]
+# CHECK-NEXT: -      -      -      -     4.00    -      -     v_mfma_f64_4x4x4f64 v[0:1], v[0:1], v[2:3], v[0:1]
+# CHECK-NEXT: -      -      -      -     8.00    -      -     v_mfma_f64_16x16x4f64 a[0:7], v[0:1], v[2:3], a[0:7]
+# CHECK-NEXT: -      -      -      -     8.00    -      -     v_mfma_f64_16x16x4f64 v[0:7], v[0:1], v[2:3], v[0:7]
+v_mfma_f64_4x4x4f64 a[0:1], v[0:1], v[2:3], a[0:1]
+v_mfma_f64_4x4x4f64 v[0:1], v[0:1], v[2:3], v[0:1]
+
+
+v_mfma_f64_16x16x4f64 a[0:7], v[0:1], v[2:3], a[0:7]
+v_mfma_f64_16x16x4f64 v[0:7], v[0:1], v[2:3], v[0:7]
+

llvm/test/tools/llvm-mca/AMDGPU/gfx940-mfma.s

@@ -2,18 +2,9 @@
 
 # CHECK: Iterations:        1
 # CHECK: Instructions:      58
-# CHECK: Total Cycles:      543
+# CHECK: Total Cycles:      545
 # CHECK: Total uOps:        58
 
-# CHECK: Resources:
-# CHECK: [0]   - HWBranch
-# CHECK: [1]   - HWExport
-# CHECK: [2]   - HWLGKM
-# CHECK: [3]   - HWSALU
-# CHECK: [4]   - HWVALU
-# CHECK: [5]   - HWVMEM
-# CHECK: [6]   - HWXDL
-
 v_mfma_f32_16x16x4_f32 a[0:3], v0, v1, a[2:5]
 v_mfma_f32_16x16x4_f32 v[0:3], v0, v1, v[2:5]
 
@@ -101,15 +92,39 @@ v_smfmac_i32_16x16x64_i8 a[10:13], v[2:3], a[4:7], v9
 v_smfmac_i32_32x32x32_i8 v[10:25], a[2:3], v[4:7], v10 cbsz:3 abid:1
 v_smfmac_i32_32x32x32_i8 a[10:25], v[2:3], a[4:7], v11
 
+# CHECK: Instruction Info:
+# CHECK-NEXT:[1]: #uOps
+# CHECK-NEXT:[2]: Latency
+# CHECK-NEXT:[3]: RThroughput
+# CHECK-NEXT:[4]: MayLoad
+# CHECK-NEXT:[5]: MayStore
+# CHECK-NEXT:[6]: HasSideEffects (U)
+
+# CHECK:     [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
+
+# CHECK:      1      8     4.00                  U     v_mfma_f64_4x4x4_4b_f64 a[0:1], v[0:1], a[2:3], a[2:3]
+# CHECK-NEXT: 1      8     4.00                  U     v_mfma_f64_4x4x4_4b_f64 v[0:1], v[0:1], v[2:3], v[2:3]
+# CHECK-NEXT: 1      12    8.00                  U     v_mfma_f64_16x16x4_f64 a[0:7], v[0:1], v[2:3], a[0:7]
+# CHECK-NEXT: 1      12    8.00                  U     v_mfma_f64_16x16x4_f64 v[0:7], v[0:1], v[2:3], v[0:7]
+
+# CHECK: Resources:
+# CHECK: [0]   - HWBranch
+# CHECK: [1]   - HWExport
+# CHECK: [2]   - HWLGKM
+# CHECK: [3]   - HWSALU
+# CHECK: [4]   - HWVALU
+# CHECK: [5]   - HWVMEM
+# CHECK: [6]   - HWXDL
+
 # CHECK:     [0]    [1]    [2]    [3]    [4]    [5]    [6]    Instructions:
 # CHECK-NEXT: -      -      -      -      -      -     8.00   v_mfma_f32_16x16x4_f32 a[0:3], v0, v1, a[2:5]
 # CHECK-NEXT: -      -      -      -      -      -     8.00   v_mfma_f32_16x16x4_f32 v[0:3], v0, v1, v[2:5]
 # CHECK-NEXT: -      -      -      -      -      -     16.00  v_mfma_f32_32x32x2_f32 a[0:15], v0, v1, a[18:33]
 # CHECK-NEXT: -      -      -      -      -      -     16.00  v_mfma_f32_32x32x2_f32 v[0:15], v0, v1, v[18:33]
-# CHECK-NEXT: -      -      -      -     1.00    -      -     v_mfma_f64_4x4x4_4b_f64 a[0:1], v[0:1], a[2:3], a[2:3]
-# CHECK-NEXT: -      -      -      -     1.00    -      -     v_mfma_f64_4x4x4_4b_f64 v[0:1], v[0:1], v[2:3], v[2:3]
-# CHECK-NEXT: -      -      -      -     1.00    -      -     v_mfma_f64_16x16x4_f64 a[0:7], v[0:1], v[2:3], a[0:7]
-# CHECK-NEXT: -      -      -      -     1.00    -      -     v_mfma_f64_16x16x4_f64 v[0:7], v[0:1], v[2:3], v[0:7]
+# CHECK-NEXT: -      -      -      -     4.00    -      -     v_mfma_f64_4x4x4_4b_f64 a[0:1], v[0:1], a[2:3], a[2:3]
+# CHECK-NEXT: -      -      -      -     4.00    -      -     v_mfma_f64_4x4x4_4b_f64 v[0:1], v[0:1], v[2:3], v[2:3]
+# CHECK-NEXT: -      -      -      -     8.00    -      -     v_mfma_f64_16x16x4_f64 a[0:7], v[0:1], v[2:3], a[0:7]
+# CHECK-NEXT: -      -      -      -     8.00    -      -     v_mfma_f64_16x16x4_f64 v[0:7], v[0:1], v[2:3], v[0:7]
 # CHECK-NEXT: -      -      -      -      -      -     4.00   v_mfma_f32_16x16x16_f16 v[0:3], v[4:5], v[6:7], v[0:3]
 # CHECK-NEXT: -      -      -      -      -      -     4.00   v_mfma_f32_16x16x16_f16 a[0:3], v[4:5], v[6:7], a[0:3]
 # CHECK-NEXT: -      -      -      -      -      -     8.00   v_mfma_f32_32x32x8_f16 v[0:15], v[4:5], v[6:7], v[0:15]