[llvm] [AMDGPU] Remove DPP DecoderNamespaces. NFC. (PR #82491)

Jay Foad via llvm-commits llvm-commits at lists.llvm.org
Thu Feb 22 02:42:29 PST 2024


https://github.com/jayfoad updated https://github.com/llvm/llvm-project/pull/82491

>From bde1c6a80a3f86e4851f4a26ac4f31c51349be68 Mon Sep 17 00:00:00 2001
From: Jay Foad <jay.foad at amd.com>
Date: Tue, 20 Feb 2024 17:22:20 +0000
Subject: [PATCH] [AMDGPU] Remove DPP DecoderNamespaces. NFC.

Now that there is no special checking for valid DPP encodings, these
instructions can use the same DecoderNamespace as other 64- or 96-bit
instructions.

Also clean up setting DecoderNamespace: in most cases it should be set
as a pair with AssemblerPredicate.
---
 .../Disassembler/AMDGPUDisassembler.cpp       |  57 +-
 llvm/lib/Target/AMDGPU/VOP1Instructions.td    |  75 ++-
 llvm/lib/Target/AMDGPU/VOP2Instructions.td    |  36 +-
 llvm/lib/Target/AMDGPU/VOP3PInstructions.td   |   6 +-
 llvm/lib/Target/AMDGPU/VOPCInstructions.td    | 498 ++++++++----------
 llvm/lib/Target/AMDGPU/VOPInstructions.td     |  16 +-
 6 files changed, 288 insertions(+), 400 deletions(-)

diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index c5d06dea92c30a..70e2275c58745e 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -462,33 +462,13 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
     // encodings
     if (isGFX11Plus() && Bytes.size() >= 12 ) {
       DecoderUInt128 DecW = eat12Bytes(Bytes);
-      Res =
-          tryDecodeInst(DecoderTableDPP8GFX1196, DecoderTableDPP8GFX11_FAKE1696,
-                        MI, DecW, Address, CS);
+      Res = tryDecodeInst(DecoderTableGFX1196, DecoderTableGFX11_FAKE1696, MI,
+                          DecW, Address, CS);
       if (Res)
         break;
 
-      Res =
-          tryDecodeInst(DecoderTableDPP8GFX1296, DecoderTableDPP8GFX12_FAKE1696,
-                        MI, DecW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableDPPGFX1196, DecoderTableDPPGFX11_FAKE1696,
-                          MI, DecW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableDPPGFX1296, DecoderTableDPPGFX12_FAKE1696,
-                          MI, DecW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableGFX1196, MI, DecW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableGFX1296, MI, DecW, Address, CS);
+      Res = tryDecodeInst(DecoderTableGFX1296, DecoderTableGFX12_FAKE1696, MI,
+                          DecW, Address, CS);
       if (Res)
         break;
 
@@ -508,33 +488,6 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
           break;
       }
 
-      Res = tryDecodeInst(DecoderTableDPP864, MI, QW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableDPP8GFX1164,
-                          DecoderTableDPP8GFX11_FAKE1664, MI, QW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableDPP8GFX1264,
-                          DecoderTableDPP8GFX12_FAKE1664, MI, QW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableDPP64, MI, QW, Address, CS);
-      if (Res) break;
-
-      Res = tryDecodeInst(DecoderTableDPPGFX1164, DecoderTableDPPGFX11_FAKE1664,
-                          MI, QW, Address, CS);
-      if (Res)
-        break;
-
-      Res = tryDecodeInst(DecoderTableDPPGFX1264, DecoderTableDPPGFX12_FAKE1664,
-                          MI, QW, Address, CS);
-      if (Res)
-        break;
-
       if (STI.hasFeature(AMDGPU::FeatureUnpackedD16VMem)) {
         Res = tryDecodeInst(DecoderTableGFX80_UNPACKED64, MI, QW, Address, CS);
         if (Res)
@@ -593,7 +546,7 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
         break;
     }
 
-    // Reinitialize Bytes as DPP64 could have eaten too much
+    // Reinitialize Bytes
     Bytes = Bytes_.slice(0, MaxInstBytesNum);
 
     // Try decode 32-bit instruction
diff --git a/llvm/lib/Target/AMDGPU/VOP1Instructions.td b/llvm/lib/Target/AMDGPU/VOP1Instructions.td
index 576ad32a70cf36..f5424cf48d7a53 100644
--- a/llvm/lib/Target/AMDGPU/VOP1Instructions.td
+++ b/llvm/lib/Target/AMDGPU/VOP1Instructions.td
@@ -749,7 +749,7 @@ class VOP1_DPP16<bits<8> op, VOP1_DPP_Pseudo ps, int subtarget, VOPProfile p = p
 class VOP1_DPP16_Gen<bits<8> op, VOP1_DPP_Pseudo ps, GFXGen Gen, VOPProfile p = ps.Pfl> :
     VOP1_DPP16 <op, ps, Gen.Subtarget, p> {
   let AssemblerPredicate = Gen.AssemblerPredicate;
-  let DecoderNamespace = "DPP"#Gen.DecoderNamespace;
+  let DecoderNamespace = Gen.DecoderNamespace;
 }
 
 class VOP1_DPP8<bits<8> op, VOP1_Pseudo ps, VOPProfile p = ps.Pfl> :
@@ -770,7 +770,7 @@ class VOP1_DPP8<bits<8> op, VOP1_Pseudo ps, VOPProfile p = ps.Pfl> :
 class VOP1_DPP8_Gen<bits<8> op, VOP1_Pseudo ps, GFXGen Gen, VOPProfile p = ps.Pfl> :
     VOP1_DPP8<op, ps, p> {
   let AssemblerPredicate = Gen.AssemblerPredicate;
-  let DecoderNamespace = "DPP8"#Gen.DecoderNamespace;
+  let DecoderNamespace = Gen.DecoderNamespace;
 }
 
 //===----------------------------------------------------------------------===//
@@ -816,7 +816,7 @@ multiclass VOP1_Real_dpp_with_name<GFXGen Gen, bits<9> op, string opName,
                                    string asmName> {
   defvar ps = !cast<VOP1_Pseudo>(opName#"_e32");
   let AsmString = asmName # ps.Pfl.AsmDPP16,
-      DecoderNamespace = "DPP" # Gen.DecoderNamespace #
+      DecoderNamespace = Gen.DecoderNamespace #
                          !if(ps.Pfl.IsRealTrue16, "", "_FAKE16") in {
     defm NAME : VOP1_Real_dpp<Gen, op, opName>;
   }
@@ -831,7 +831,7 @@ multiclass VOP1_Real_dpp8_with_name<GFXGen Gen, bits<9> op, string opName,
                                     string asmName> {
   defvar ps = !cast<VOP1_Pseudo>(opName#"_e32");
   let AsmString = asmName # ps.Pfl.AsmDPP8,
-      DecoderNamespace = "DPP8" # Gen.DecoderNamespace #
+      DecoderNamespace = Gen.DecoderNamespace #
                          !if(ps.Pfl.IsRealTrue16, "", "_FAKE16") in {
     defm NAME : VOP1_Real_dpp8<Gen, op, opName>;
   }
@@ -994,9 +994,7 @@ let AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10" in {
   }
   multiclass VOP1_Real_dpp8_gfx10<bits<9> op> {
     if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExt32BitDPP then
-    def _dpp8_gfx10 : VOP1_DPP8<op{7-0}, !cast<VOP1_Pseudo>(NAME#"_e32")> {
-      let DecoderNamespace = "DPP8";
-    }
+    def _dpp8_gfx10 : VOP1_DPP8<op{7-0}, !cast<VOP1_Pseudo>(NAME#"_e32")>;
   }
 } // End AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10"
 
@@ -1192,16 +1190,14 @@ class VOP1_DPPe <bits<8> op, VOP1_DPP_Pseudo ps, VOPProfile P = ps.Pfl> :
   let Inst{31-25} = 0x3f; //encoding
 }
 
-multiclass VOP1Only_Real_vi <bits<10> op> {
-  let AssemblerPredicate = isGFX8GFX9, DecoderNamespace = "GFX8" in {
+let AssemblerPredicate = isGFX8GFX9, DecoderNamespace = "GFX8" in {
+  multiclass VOP1Only_Real_vi <bits<10> op> {
     def _vi :
       VOP1_Real<!cast<VOP1_Pseudo>(NAME), SIEncodingFamily.VI>,
       VOP1e<op{7-0}, !cast<VOP1_Pseudo>(NAME).Pfl>;
   }
-}
 
-multiclass VOP1_Real_e32e64_vi <bits<10> op> {
-  let AssemblerPredicate = isGFX8GFX9, DecoderNamespace = "GFX8" in {
+  multiclass VOP1_Real_e32e64_vi <bits<10> op> {
     def _e32_vi :
       VOP1_Real<!cast<VOP1_Pseudo>(NAME#"_e32"), SIEncodingFamily.VI>,
       VOP1e<op{7-0}, !cast<VOP1_Pseudo>(NAME#"_e32").Pfl>;
@@ -1389,44 +1385,41 @@ def : GCNPat <
 // GFX9
 //===----------------------------------------------------------------------===//
 
-multiclass VOP1_Real_gfx9 <bits<10> op> {
-  let AssemblerPredicate = isGFX9Only, DecoderNamespace = "GFX9" in {
+let AssemblerPredicate = isGFX9Only, DecoderNamespace = "GFX9" in {
+  multiclass VOP1_Real_gfx9 <bits<10> op> {
     defm NAME : VOP1_Real_e32e64_vi <op>;
-  }
-
-  if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtSDWA9 then
-  def _sdwa_gfx9 :
-    VOP_SDWA9_Real <!cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa")>,
-    VOP1_SDWA9Ae <op{7-0}, !cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa").Pfl>;
-
-  if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtDPP then
-    def _dpp_gfx9 :
-      VOP_DPP_Real<!cast<VOP1_DPP_Pseudo>(NAME#"_dpp"), SIEncodingFamily.GFX9>,
-      VOP1_DPPe<op{7-0}, !cast<VOP1_DPP_Pseudo>(NAME#"_dpp")>;
-
-}
 
-multiclass VOP1_Real_NoDstSel_SDWA_gfx9 <bits<10> op> {
-  let AssemblerPredicate = isGFX9Only, DecoderNamespace = "GFX9" in {
-    defm NAME : VOP1_Real_e32e64_vi <op>;
+    if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtSDWA9 then
+    def _sdwa_gfx9 :
+      VOP_SDWA9_Real <!cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa")>,
+      VOP1_SDWA9Ae <op{7-0}, !cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa").Pfl>;
+
+    if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtDPP then
+      def _dpp_gfx9 :
+        VOP_DPP_Real<!cast<VOP1_DPP_Pseudo>(NAME#"_dpp"), SIEncodingFamily.GFX9>,
+        VOP1_DPPe<op{7-0}, !cast<VOP1_DPP_Pseudo>(NAME#"_dpp")>;
   }
 
-  if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtSDWA9 then
-  def _sdwa_gfx9 :
-    VOP_SDWA9_Real <!cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa")>,
-    VOP1_SDWA9Ae <op{7-0}, !cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa").Pfl> {
-      let Inst{42-40} = 6;
-    }
+  multiclass VOP1_Real_NoDstSel_SDWA_gfx9 <bits<10> op> {
+    defm NAME : VOP1_Real_e32e64_vi <op>;
 
-  if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtDPP then
-    def _dpp_gfx9 :
-      VOP_DPP_Real<!cast<VOP1_DPP_Pseudo>(NAME#"_dpp"), SIEncodingFamily.GFX9>,
-      VOP1_DPPe<op{7-0}, !cast<VOP1_DPP_Pseudo>(NAME#"_dpp")>;
+    if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtSDWA9 then
+    def _sdwa_gfx9 :
+      VOP_SDWA9_Real <!cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa")>,
+      VOP1_SDWA9Ae <op{7-0}, !cast<VOP1_SDWA_Pseudo>(NAME#"_sdwa").Pfl> {
+        let Inst{42-40} = 6;
+      }
+
+    if !cast<VOP1_Pseudo>(NAME#"_e32").Pfl.HasExtDPP then
+      def _dpp_gfx9 :
+        VOP_DPP_Real<!cast<VOP1_DPP_Pseudo>(NAME#"_dpp"), SIEncodingFamily.GFX9>,
+        VOP1_DPPe<op{7-0}, !cast<VOP1_DPP_Pseudo>(NAME#"_dpp")>;
+  }
 }
 
 defm V_SCREEN_PARTITION_4SE_B32 : VOP1_Real_gfx9 <0x37>;
 
-let AssemblerPredicate = isGFX940Plus, DecoderNamespace = "GFX9" in
+let AssemblerPredicate = isGFX940Plus in
 defm V_MOV_B64 : VOP1_Real_gfx9 <0x38>;
 
 let OtherPredicates = [HasFP8ConversionInsts] in {
diff --git a/llvm/lib/Target/AMDGPU/VOP2Instructions.td b/llvm/lib/Target/AMDGPU/VOP2Instructions.td
index 9f54e69f6d55e1..13fe79b4759608 100644
--- a/llvm/lib/Target/AMDGPU/VOP2Instructions.td
+++ b/llvm/lib/Target/AMDGPU/VOP2Instructions.td
@@ -1273,7 +1273,7 @@ class VOP2_DPP16_Gen<bits<6> op, VOP2_DPP_Pseudo ps, GFXGen Gen,
     VOP2_DPP16<op, ps, Gen.Subtarget, opName, p> {
   let AssemblerPredicate = Gen.AssemblerPredicate;
   let OtherPredicates = !if(ps.Pfl.IsRealTrue16, [UseRealTrue16Insts], []);
-  let DecoderNamespace = "DPP"#Gen.DecoderNamespace#
+  let DecoderNamespace = Gen.DecoderNamespace#
                          !if(ps.Pfl.IsRealTrue16, "", "_FAKE16");
 }
 
@@ -1302,7 +1302,7 @@ class VOP2_DPP8_Gen<bits<6> op, VOP2_Pseudo ps, GFXGen Gen,
     VOP2_DPP8<op, ps, p> {
   let AssemblerPredicate = Gen.AssemblerPredicate;
   let OtherPredicates = !if(ps.Pfl.IsRealTrue16, [UseRealTrue16Insts], []);
-  let DecoderNamespace = "DPP8"#Gen.DecoderNamespace#
+  let DecoderNamespace = Gen.DecoderNamespace#
                          !if(ps.Pfl.IsRealTrue16, "", "_FAKE16");
 }
 
@@ -1748,9 +1748,7 @@ let AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10" in {
   }
   multiclass VOP2_Real_dpp8_gfx10<bits<6> op> {
     if !cast<VOP2_Pseudo>(NAME#"_e32").Pfl.HasExt32BitDPP then
-    def _dpp8_gfx10 : VOP2_DPP8<op, !cast<VOP2_Pseudo>(NAME#"_e32")> {
-      let DecoderNamespace = "DPP8";
-    }
+    def _dpp8_gfx10 : VOP2_DPP8<op, !cast<VOP2_Pseudo>(NAME#"_e32")>;
   }
 
   //===------------------------- VOP2 (with name) -------------------------===//
@@ -1797,7 +1795,6 @@ let AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10" in {
     def _dpp8_gfx10 : VOP2_DPP8<op, !cast<VOP2_Pseudo>(opName#"_e32")> {
       VOP2_Pseudo ps = !cast<VOP2_Pseudo>(opName#"_e32");
       let AsmString = asmName # ps.Pfl.AsmDPP8;
-      let DecoderNamespace = "DPP8";
     }
   }
 
@@ -1876,7 +1873,6 @@ let AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10" in {
       VOP2_DPP8<op, !cast<VOP2_Pseudo>(opName#"_e32")> {
         string AsmDPP8 = !cast<VOP2_Pseudo>(opName#"_e32").Pfl.AsmDPP8;
         let AsmString = asmName # !subst(", vcc", "", AsmDPP8);
-        let DecoderNamespace = "DPP8";
       }
     if !cast<VOP2_Pseudo>(opName#"_e32").Pfl.HasExt32BitDPP then
     def _dpp8_w32_gfx10 :
@@ -2231,7 +2227,7 @@ multiclass VOP2_SDWA9_Real <bits<6> op> {
     VOP2_SDWA9Ae <op{5-0}, !cast<VOP2_SDWA_Pseudo>(NAME#"_sdwa").Pfl>;
 }
 
-let AssemblerPredicate = isGFX8Only in {
+let AssemblerPredicate = isGFX8Only, DecoderNamespace = "GFX8" in {
 
 multiclass VOP2be_Real_e32e64_vi_only <bits<6> op, string OpName, string AsmName> {
   def _e32_vi :
@@ -2239,14 +2235,12 @@ multiclass VOP2be_Real_e32e64_vi_only <bits<6> op, string OpName, string AsmName
     VOP2e<op{5-0}, !cast<VOP2_Pseudo>(OpName#"_e32").Pfl> {
       VOP2_Pseudo ps = !cast<VOP2_Pseudo>(OpName#"_e32");
       let AsmString = AsmName # ps.AsmOperands;
-      let DecoderNamespace = "GFX8";
     }
   def _e64_vi :
     VOP3_Real<!cast<VOP3_Pseudo>(OpName#"_e64"), SIEncodingFamily.VI>,
     VOP3be_vi <{0, 1, 0, 0, op{5-0}}, !cast<VOP3_Pseudo>(OpName#"_e64").Pfl> {
       VOP3_Pseudo ps = !cast<VOP3_Pseudo>(OpName#"_e64");
       let AsmString = AsmName # ps.AsmOperands;
-      let DecoderNamespace = "GFX8";
     }
   if !cast<VOP2_Pseudo>(OpName#"_e32").Pfl.HasExtSDWA then
     def _sdwa_vi :
@@ -2263,9 +2257,10 @@ multiclass VOP2be_Real_e32e64_vi_only <bits<6> op, string OpName, string AsmName
         let AsmString = AsmName # ps.AsmOperands;
       }
 }
-}
 
-let AssemblerPredicate = isGFX9Only in {
+} // End AssemblerPredicate = isGFX8Only, DecoderNamespace = "GFX8"
+
+let AssemblerPredicate = isGFX9Only, DecoderNamespace = "GFX9" in {
 
 multiclass VOP2be_Real_e32e64_gfx9 <bits<6> op, string OpName, string AsmName> {
   def _e32_gfx9 :
@@ -2273,14 +2268,12 @@ multiclass VOP2be_Real_e32e64_gfx9 <bits<6> op, string OpName, string AsmName> {
     VOP2e<op{5-0}, !cast<VOP2_Pseudo>(OpName#"_e32").Pfl> {
       VOP2_Pseudo ps = !cast<VOP2_Pseudo>(OpName#"_e32");
       let AsmString = AsmName # ps.AsmOperands;
-      let DecoderNamespace = "GFX9";
     }
   def _e64_gfx9 :
     VOP3_Real<!cast<VOP3_Pseudo>(OpName#"_e64"), SIEncodingFamily.GFX9>,
     VOP3be_vi <{0, 1, 0, 0, op{5-0}}, !cast<VOP3_Pseudo>(OpName#"_e64").Pfl> {
       VOP3_Pseudo ps = !cast<VOP3_Pseudo>(OpName#"_e64");
       let AsmString = AsmName # ps.AsmOperands;
-      let DecoderNamespace = "GFX9";
     }
   if !cast<VOP2_Pseudo>(OpName#"_e32").Pfl.HasExtSDWA9 then
     def _sdwa_gfx9 :
@@ -2295,21 +2288,16 @@ multiclass VOP2be_Real_e32e64_gfx9 <bits<6> op, string OpName, string AsmName> {
       VOP2_DPPe<op, !cast<VOP2_DPP_Pseudo>(OpName#"_dpp")> {
         VOP2_DPP_Pseudo ps = !cast<VOP2_DPP_Pseudo>(OpName#"_dpp");
         let AsmString = AsmName # ps.AsmOperands;
-        let DecoderNamespace = "GFX9";
       }
 }
 
 multiclass VOP2_Real_e32e64_gfx9 <bits<6> op> {
   def _e32_gfx9 :
     VOP2_Real<!cast<VOP2_Pseudo>(NAME#"_e32"), SIEncodingFamily.GFX9>,
-    VOP2e<op{5-0}, !cast<VOP2_Pseudo>(NAME#"_e32").Pfl>{
-      let DecoderNamespace = "GFX9";
-    }
+    VOP2e<op{5-0}, !cast<VOP2_Pseudo>(NAME#"_e32").Pfl>;
   def _e64_gfx9 :
     VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_e64"), SIEncodingFamily.GFX9>,
-    VOP3e_vi <{0, 1, 0, 0, op{5-0}}, !cast<VOP3_Pseudo>(NAME#"_e64").Pfl> {
-      let DecoderNamespace = "GFX9";
-    }
+    VOP3e_vi <{0, 1, 0, 0, op{5-0}}, !cast<VOP3_Pseudo>(NAME#"_e64").Pfl>;
   if !cast<VOP2_Pseudo>(NAME#"_e32").Pfl.HasExtSDWA9 then
     def _sdwa_gfx9 :
       VOP_SDWA9_Real <!cast<VOP2_SDWA_Pseudo>(NAME#"_sdwa")>,
@@ -2318,12 +2306,10 @@ multiclass VOP2_Real_e32e64_gfx9 <bits<6> op> {
   if !cast<VOP2_Pseudo>(NAME#"_e32").Pfl.HasExtDPP then
     def _dpp_gfx9 :
       VOP_DPP_Real<!cast<VOP2_DPP_Pseudo>(NAME#"_dpp"), SIEncodingFamily.GFX9>,
-      VOP2_DPPe<op, !cast<VOP2_DPP_Pseudo>(NAME#"_dpp")> {
-        let DecoderNamespace = "GFX9";
-      }
+      VOP2_DPPe<op, !cast<VOP2_DPP_Pseudo>(NAME#"_dpp")>;
 }
 
-} // AssemblerPredicate = isGFX9Only
+} // End AssemblerPredicate = isGFX9Only, DecoderNamespace = "GFX9"
 
 multiclass VOP2_Real_e32e64_vi <bits<6> op> :
   Base_VOP2_Real_e32e64_vi<op>, VOP2_SDWA_Real<op>, VOP2_SDWA9_Real<op> {
diff --git a/llvm/lib/Target/AMDGPU/VOP3PInstructions.td b/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
index a0090f3e8d1db0..cf76de40aef412 100644
--- a/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
+++ b/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
@@ -1486,7 +1486,7 @@ multiclass VOP3P_Real_dpp<GFXGen Gen, bits<7> op, string backing_ps_name = NAME,
       : VOP3P_DPP16<op, !cast<VOP_DPP_Pseudo>(backing_ps_name #"_dpp"),
                     Gen.Subtarget> {
     let AsmString = asmName #ps.Pfl.AsmVOP3DPP16;
-    let DecoderNamespace = "DPP"#Gen.DecoderNamespace;
+    let DecoderNamespace = Gen.DecoderNamespace;
     let AssemblerPredicate = Gen.AssemblerPredicate;
   }
 }
@@ -1496,7 +1496,7 @@ multiclass VOP3P_Real_dpp8<GFXGen Gen, bits<7> op, string backing_ps_name = NAME
   defvar ps = !cast<VOP3P_Pseudo>(backing_ps_name);
   def _dpp8#Gen.Suffix : VOP3P_DPP8_Base<op, ps> {
     let AsmString = asmName #ps.Pfl.AsmVOP3DPP8;
-    let DecoderNamespace = "DPP8"#Gen.DecoderNamespace;
+    let DecoderNamespace = Gen.DecoderNamespace;
     let AssemblerPredicate = Gen.AssemblerPredicate;
   }
 }
@@ -1613,7 +1613,7 @@ multiclass VOP3P_Real_MFMA_gfx940_aliases<string NameFrom, string NameTo, string
 multiclass VOP3P_Real_MFMA_gfx940<bits<7> op, string Name = !cast<VOP3_Pseudo>(NAME#"_e64").Mnemonic,
                                   VOP3_Pseudo PS_ACD = !cast<VOP3_Pseudo>(NAME # "_e64"),
                                   VOP3_Pseudo PS_VCD = !cast<VOP3_Pseudo>(NAME # "_vgprcd" # "_e64")> {
-  let SubtargetPredicate = isGFX940Plus,
+  let AssemblerPredicate = isGFX940Plus,
       DecoderNamespace = "GFX940",
       AsmString = Name # PS_ACD.AsmOperands, Constraints = "" in {
   def _gfx940_acd : VOP3P_Real<PS_ACD, SIEncodingFamily.GFX940>,
diff --git a/llvm/lib/Target/AMDGPU/VOPCInstructions.td b/llvm/lib/Target/AMDGPU/VOPCInstructions.td
index 508f06c4739a50..e5e82447d55fbd 100644
--- a/llvm/lib/Target/AMDGPU/VOPCInstructions.td
+++ b/llvm/lib/Target/AMDGPU/VOPCInstructions.td
@@ -222,6 +222,8 @@ class VOPCInstAlias <VOP3_Pseudo ps, Instruction inst,
 
   let AsmVariantName = AMDGPUAsmVariants.Default;
   let SubtargetPredicate = AssemblerPredicate;
+
+  string DecoderNamespace; // dummy
 }
 
 multiclass VOPCInstAliases <string old_name, string Arch, string real_name = old_name, string mnemonic_from = real_name> {
@@ -1331,196 +1333,176 @@ class VOPC64_DPP8_NoDst<bits<10> op, VOP_Pseudo ps, string opName = ps.OpName>
 //===----------------------------------------------------------------------===//
 
 multiclass VOPC_Real_Base<GFXGen Gen, bits<9> op> {
-  let AssemblerPredicate = Gen.AssemblerPredicate in {
+  let AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace in {
     defvar ps32 = !cast<VOPC_Pseudo>(NAME#"_e32");
     defvar ps64 = !cast<VOP3_Pseudo>(NAME#"_e64");
-    let DecoderNamespace = Gen.DecoderNamespace in {
-      def _e32#Gen.Suffix : VOPC_Real<ps32, Gen.Subtarget>,
-                            VOPCe<op{7-0}>;
-      def _e64#Gen.Suffix : VOP3_Real<ps64, Gen.Subtarget>,
-                            VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl> {
-        // Encoding used for VOPC instructions encoded as VOP3 differs from
-        // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
-        bits<8> sdst;
-        let Inst{7-0} = sdst;
-      }
-    } // End DecoderNamespace = Gen.DecoderNamespace
+    def _e32#Gen.Suffix : VOPC_Real<ps32, Gen.Subtarget>,
+                          VOPCe<op{7-0}>;
+    def _e64#Gen.Suffix : VOP3_Real<ps64, Gen.Subtarget>,
+                          VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl> {
+      // Encoding used for VOPC instructions encoded as VOP3 differs from
+      // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
+      bits<8> sdst;
+      let Inst{7-0} = sdst;
+    }
 
     defm : VOPCInstAliases<NAME, !substr(Gen.Suffix,1)>;
 
     if ps32.Pfl.HasExtDPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(NAME #"_e32" #"_dpp");
       defvar AsmDPP = ps32.Pfl.AsmDPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e32_dpp#Gen.Suffix : VOPC_DPP16_SIMC<op{7-0}, psDPP, Gen.Subtarget>;
-        def _e32_dpp_w32#Gen.Suffix : VOPC_DPP16<op{7-0}, psDPP> {
-          let AsmString = psDPP.OpName # " vcc_lo, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e32_dpp_w64#Gen.Suffix : VOPC_DPP16<op{7-0}, psDPP> {
-          let AsmString = psDPP.OpName # " vcc, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e32_dpp#Gen.Suffix : VOPC_DPP16_SIMC<op{7-0}, psDPP, Gen.Subtarget>;
+      def _e32_dpp_w32#Gen.Suffix : VOPC_DPP16<op{7-0}, psDPP> {
+        let AsmString = psDPP.OpName # " vcc_lo, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e32_dpp_w64#Gen.Suffix : VOPC_DPP16<op{7-0}, psDPP> {
+        let AsmString = psDPP.OpName # " vcc, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
       defvar AsmDPP8 = ps32.Pfl.AsmDPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32>;
-        def _e32_dpp8_w32#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32> {
-          let AsmString = ps32.OpName # " vcc_lo, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e32_dpp8_w64#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32> {
-          let AsmString = ps32.OpName # " vcc, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32>;
+      def _e32_dpp8_w32#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32> {
+        let AsmString = ps32.OpName # " vcc_lo, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e32_dpp8_w64#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32> {
+        let AsmString = ps32.OpName # " vcc, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
     }
     if ps64.Pfl.HasExtVOP3DPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(NAME #"_e64" #"_dpp");
       defvar AsmDPP = ps64.Pfl.AsmVOP3DPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e64_dpp#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP>,
-                                  SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget>;
-        def _e64_dpp_w32#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP> {
-          let AsmString = psDPP.OpName # " vcc_lo, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e64_dpp_w64#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP> {
-          let AsmString = psDPP.OpName # " vcc, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e64_dpp#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP>,
+                                SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget>;
+      def _e64_dpp_w32#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP> {
+        let AsmString = psDPP.OpName # " vcc_lo, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e64_dpp_w64#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP> {
+        let AsmString = psDPP.OpName # " vcc, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
       defvar AsmDPP8 = ps64.Pfl.AsmVOP3DPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64>;
-        def _e64_dpp8_w32#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64> {
-          let AsmString = ps32.OpName # " vcc_lo, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e64_dpp8_w64#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64> {
-          let AsmString = ps32.OpName # " vcc, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64>;
+      def _e64_dpp8_w32#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64> {
+        let AsmString = ps32.OpName # " vcc_lo, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e64_dpp8_w64#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64> {
+        let AsmString = ps32.OpName # " vcc, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
     }
-  } // AssemblerPredicate = Gen.AssemblerPredicate
+  } // AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace
 }
 
 multiclass VOPC_Real_with_name<GFXGen Gen, bits<9> op, string OpName,
                                string asm_name, string pseudo_mnemonic = ""> {
-  let AssemblerPredicate = Gen.AssemblerPredicate in {
+  let AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace in {
     defvar ps32 = !cast<VOPC_Pseudo>(OpName#"_e32");
     defvar ps64 = !cast<VOP3_Pseudo>(OpName#"_e64");
-    let DecoderNamespace = Gen.DecoderNamespace in {
-      def _e32#Gen.Suffix :
-        // 32 and 64 bit forms of the instruction have _e32 and _e64
-        // respectively appended to their assembly mnemonic.
-        // _e64 is printed as part of the VOPDstS64orS32 operand, whereas
-        // the destination-less 32bit forms add it to the asmString here.
-        VOPC_Real<ps32, Gen.Subtarget, asm_name#"_e32">,
-        VOPCe<op{7-0}>,
-        MnemonicAlias<!if(!empty(pseudo_mnemonic), ps32.Mnemonic,
-                          pseudo_mnemonic),
-                      asm_name, ps32.AsmVariantName>,
-        Requires<[Gen.AssemblerPredicate]>;
-      def _e64#Gen.Suffix :
-            VOP3_Real<ps64, Gen.Subtarget, asm_name>,
-            VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl>,
-            MnemonicAlias<!if(!empty(pseudo_mnemonic), ps64.Mnemonic,
-                              pseudo_mnemonic),
-                          asm_name, ps64.AsmVariantName>,
-            Requires<[Gen.AssemblerPredicate]> {
-        // Encoding used for VOPC instructions encoded as VOP3 differs from
-        // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
-        bits<8> sdst;
-        let Inst{7-0} = sdst;
-      }
-    } // End DecoderNamespace = Gen.DecoderNamespace
+    def _e32#Gen.Suffix :
+      // 32 and 64 bit forms of the instruction have _e32 and _e64
+      // respectively appended to their assembly mnemonic.
+      // _e64 is printed as part of the VOPDstS64orS32 operand, whereas
+      // the destination-less 32bit forms add it to the asmString here.
+      VOPC_Real<ps32, Gen.Subtarget, asm_name#"_e32">,
+      VOPCe<op{7-0}>,
+      MnemonicAlias<!if(!empty(pseudo_mnemonic), ps32.Mnemonic,
+                        pseudo_mnemonic),
+                    asm_name, ps32.AsmVariantName>,
+      Requires<[Gen.AssemblerPredicate]>;
+    def _e64#Gen.Suffix :
+          VOP3_Real<ps64, Gen.Subtarget, asm_name>,
+          VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl>,
+          MnemonicAlias<!if(!empty(pseudo_mnemonic), ps64.Mnemonic,
+                            pseudo_mnemonic),
+                        asm_name, ps64.AsmVariantName>,
+          Requires<[Gen.AssemblerPredicate]> {
+      // Encoding used for VOPC instructions encoded as VOP3 differs from
+      // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
+      bits<8> sdst;
+      let Inst{7-0} = sdst;
+    }
 
     defm : VOPCInstAliases<OpName, !substr(Gen.Suffix, 1), NAME, asm_name>;
 
     if ps32.Pfl.HasExtDPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(OpName #"_e32" #"_dpp");
       defvar AsmDPP = ps32.Pfl.AsmDPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e32_dpp#Gen.Suffix : VOPC_DPP16_SIMC<op{7-0}, psDPP,
-                                                  Gen.Subtarget, asm_name>;
-        def _e32_dpp_w32#Gen.Suffix
-            : VOPC_DPP16<op{7-0}, psDPP, asm_name> {
-          let AsmString = asm_name # " vcc_lo, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e32_dpp_w64#Gen.Suffix
-            : VOPC_DPP16<op{7-0}, psDPP, asm_name> {
-          let AsmString = asm_name # " vcc, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e32_dpp#Gen.Suffix : VOPC_DPP16_SIMC<op{7-0}, psDPP,
+                                                Gen.Subtarget, asm_name>;
+      def _e32_dpp_w32#Gen.Suffix
+          : VOPC_DPP16<op{7-0}, psDPP, asm_name> {
+        let AsmString = asm_name # " vcc_lo, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e32_dpp_w64#Gen.Suffix
+          : VOPC_DPP16<op{7-0}, psDPP, asm_name> {
+        let AsmString = asm_name # " vcc, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
       defvar AsmDPP8 = ps32.Pfl.AsmDPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32, asm_name>;
-        def _e32_dpp8_w32#Gen.Suffix
-            : VOPC_DPP8<op{7-0}, ps32, asm_name> {
-          let AsmString = asm_name # " vcc_lo, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e32_dpp8_w64#Gen.Suffix
-            : VOPC_DPP8<op{7-0}, ps32, asm_name> {
-          let AsmString = asm_name # " vcc, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32, asm_name>;
+      def _e32_dpp8_w32#Gen.Suffix
+          : VOPC_DPP8<op{7-0}, ps32, asm_name> {
+        let AsmString = asm_name # " vcc_lo, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e32_dpp8_w64#Gen.Suffix
+          : VOPC_DPP8<op{7-0}, ps32, asm_name> {
+        let AsmString = asm_name # " vcc, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
     }
 
     if ps64.Pfl.HasExtVOP3DPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(OpName #"_e64" #"_dpp");
       defvar AsmDPP = ps64.Pfl.AsmVOP3DPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e64_dpp#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP, asm_name>,
-                                  SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget>;
-        def _e64_dpp_w32#Gen.Suffix
-            : VOPC64_DPP16_Dst<{0, op}, psDPP, asm_name> {
-          let AsmString = asm_name # " vcc_lo, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e64_dpp_w64#Gen.Suffix
-            : VOPC64_DPP16_Dst<{0, op}, psDPP, asm_name> {
-          let AsmString = asm_name # " vcc, " # AsmDPP;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e64_dpp#Gen.Suffix : VOPC64_DPP16_Dst<{0, op}, psDPP, asm_name>,
+                                SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget>;
+      def _e64_dpp_w32#Gen.Suffix
+          : VOPC64_DPP16_Dst<{0, op}, psDPP, asm_name> {
+        let AsmString = asm_name # " vcc_lo, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e64_dpp_w64#Gen.Suffix
+          : VOPC64_DPP16_Dst<{0, op}, psDPP, asm_name> {
+        let AsmString = asm_name # " vcc, " # AsmDPP;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
       defvar AsmDPP8 = ps64.Pfl.AsmVOP3DPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64, asm_name>;
-        def _e64_dpp8_w32#Gen.Suffix
-            : VOPC64_DPP8_Dst<{0, op}, ps64, asm_name> {
-          let AsmString = asm_name # " vcc_lo, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave32;
-        }
-        def _e64_dpp8_w64#Gen.Suffix
-            : VOPC64_DPP8_Dst<{0, op}, ps64, asm_name> {
-          let AsmString = asm_name # " vcc, " # AsmDPP8;
-          let isAsmParserOnly = 1;
-          let WaveSizePredicate = isWave64;
-        }
+      def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_Dst<{0, op}, ps64, asm_name>;
+      def _e64_dpp8_w32#Gen.Suffix
+          : VOPC64_DPP8_Dst<{0, op}, ps64, asm_name> {
+        let AsmString = asm_name # " vcc_lo, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave32;
+      }
+      def _e64_dpp8_w64#Gen.Suffix
+          : VOPC64_DPP8_Dst<{0, op}, ps64, asm_name> {
+        let AsmString = asm_name # " vcc, " # AsmDPP8;
+        let isAsmParserOnly = 1;
+        let WaveSizePredicate = isWave64;
       }
     }
-  } // AssemblerPredicate = Gen.AssemblerPredicate
+  } // End AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace
 }
 
 multiclass VOPC_Real_t16<GFXGen Gen, bits<9> op, string asm_name,
@@ -1528,123 +1510,103 @@ multiclass VOPC_Real_t16<GFXGen Gen, bits<9> op, string asm_name,
   VOPC_Real_with_name<Gen, op, OpName, asm_name, pseudo_mnemonic>;
 
 multiclass VOPCX_Real<GFXGen Gen, bits<9> op> {
-  let AssemblerPredicate = Gen.AssemblerPredicate in {
+  let AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace in {
     defvar ps32 = !cast<VOPC_Pseudo>(NAME#"_nosdst_e32");
     defvar ps64 = !cast<VOP3_Pseudo>(NAME#"_nosdst_e64");
-    let DecoderNamespace = Gen.DecoderNamespace in {
-      def _e32#Gen.Suffix :
-        VOPC_Real<ps32, Gen.Subtarget>,
-        VOPCe<op{7-0}> {
-          let AsmString = !subst("_nosdst", "", ps32.PseudoInstr)
-                          # " " # ps32.AsmOperands;
-        }
-      def _e64#Gen.Suffix :
-        VOP3_Real<ps64, Gen.Subtarget>,
-        VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl> {
-          let Inst{7-0} = ?; // sdst
-          let AsmString = !subst("_nosdst", "", ps64.Mnemonic)
-                          # "{_e64} " # ps64.AsmOperands;
-        }
-    } // End DecoderNamespace = Gen.DecoderNamespace
+    def _e32#Gen.Suffix :
+      VOPC_Real<ps32, Gen.Subtarget>,
+      VOPCe<op{7-0}> {
+        let AsmString = !subst("_nosdst", "", ps32.PseudoInstr)
+                        # " " # ps32.AsmOperands;
+    }
+    def _e64#Gen.Suffix :
+      VOP3_Real<ps64, Gen.Subtarget>,
+      VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl> {
+        let Inst{7-0} = ?; // sdst
+        let AsmString = !subst("_nosdst", "", ps64.Mnemonic)
+                        # "{_e64} " # ps64.AsmOperands;
+    }
 
     defm : VOPCXInstAliases<NAME, !substr(Gen.Suffix, 1)>;
 
     if ps32.Pfl.HasExtDPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(NAME #"_nosdst_e32" #"_dpp");
       defvar AsmDPP = ps32.Pfl.AsmDPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e32_dpp#Gen.Suffix
-            : VOPC_DPP16_SIMC<op{7-0}, psDPP, Gen.Subtarget> {
-          let AsmString = !subst("_nosdst", "", psDPP.OpName) # " " # AsmDPP;
-        }
+      def _e32_dpp#Gen.Suffix
+          : VOPC_DPP16_SIMC<op{7-0}, psDPP, Gen.Subtarget> {
+        let AsmString = !subst("_nosdst", "", psDPP.OpName) # " " # AsmDPP;
       }
       defvar AsmDPP8 = ps32.Pfl.AsmDPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32> {
-          let AsmString = !subst("_nosdst", "", ps32.OpName) # " " # AsmDPP8;
-        }
+      def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32> {
+        let AsmString = !subst("_nosdst", "", ps32.OpName) # " " # AsmDPP8;
       }
     }
 
     if ps64.Pfl.HasExtVOP3DPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(NAME #"_nosdst_e64" #"_dpp");
       defvar AsmDPP = ps64.Pfl.AsmVOP3DPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e64_dpp#Gen.Suffix
-            : VOPC64_DPP16_NoDst<{0, op}, psDPP>,
-              SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget> {
-          let AsmString = !subst("_nosdst", "", psDPP.OpName)
-                          # "{_e64_dpp} " # AsmDPP;
-        }
+      def _e64_dpp#Gen.Suffix
+          : VOPC64_DPP16_NoDst<{0, op}, psDPP>,
+            SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget> {
+        let AsmString = !subst("_nosdst", "", psDPP.OpName)
+                        # "{_e64_dpp} " # AsmDPP;
       }
       defvar AsmDPP8 = ps64.Pfl.AsmVOP3DPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_NoDst<{0, op}, ps64> {
-          let AsmString = !subst("_nosdst", "", ps64.OpName)
-                          # "{_e64_dpp} " # AsmDPP8;
-        }
+      def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_NoDst<{0, op}, ps64> {
+        let AsmString = !subst("_nosdst", "", ps64.OpName)
+                        # "{_e64_dpp} " # AsmDPP8;
       }
     }
-  } // AssemblerPredicate = Gen.AssemblerPredicate
+  } // End AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace
 }
 
 multiclass VOPCX_Real_with_name<GFXGen Gen, bits<9> op, string OpName,
       string asm_name, string pseudo_mnemonic = ""> {
-  let AssemblerPredicate = Gen.AssemblerPredicate in {
+  let AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace in {
     defvar ps32 = !cast<VOPC_Pseudo>(OpName#"_nosdst_e32");
     defvar ps64 = !cast<VOP3_Pseudo>(OpName#"_nosdst_e64");
-    let DecoderNamespace = Gen.DecoderNamespace in {
-      def _e32#Gen.Suffix
-          : VOPC_Real<ps32, Gen.Subtarget, asm_name>,
-            MnemonicAlias<!if(!empty(pseudo_mnemonic), !subst("_nosdst", "", ps32.Mnemonic),
-                              pseudo_mnemonic),
-                          asm_name, ps32.AsmVariantName>,
-            Requires<[Gen.AssemblerPredicate]>,
-            VOPCe<op{7-0}> {
-        let AsmString = asm_name # "{_e32} " # ps32.AsmOperands;
-      }
-      def _e64#Gen.Suffix
-          : VOP3_Real<ps64, Gen.Subtarget, asm_name>,
-            MnemonicAlias<!if(!empty(pseudo_mnemonic), !subst("_nosdst", "", ps64.Mnemonic),
-                              pseudo_mnemonic),
-                          asm_name, ps64.AsmVariantName>,
-            Requires<[Gen.AssemblerPredicate]>,
-            VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl> {
-        let Inst{7-0} = ? ; // sdst
-        let AsmString = asm_name # "{_e64} " # ps64.AsmOperands;
-      }
-    } // End DecoderNamespace = Gen.DecoderNamespace
+    def _e32#Gen.Suffix
+        : VOPC_Real<ps32, Gen.Subtarget, asm_name>,
+          MnemonicAlias<!if(!empty(pseudo_mnemonic), !subst("_nosdst", "", ps32.Mnemonic),
+                            pseudo_mnemonic),
+                        asm_name, ps32.AsmVariantName>,
+          Requires<[Gen.AssemblerPredicate]>,
+          VOPCe<op{7-0}> {
+      let AsmString = asm_name # "{_e32} " # ps32.AsmOperands;
+    }
+    def _e64#Gen.Suffix
+        : VOP3_Real<ps64, Gen.Subtarget, asm_name>,
+          MnemonicAlias<!if(!empty(pseudo_mnemonic), !subst("_nosdst", "", ps64.Mnemonic),
+                            pseudo_mnemonic),
+                        asm_name, ps64.AsmVariantName>,
+          Requires<[Gen.AssemblerPredicate]>,
+          VOP3a_gfx11_gfx12<{0, op}, ps64.Pfl> {
+      let Inst{7-0} = ? ; // sdst
+      let AsmString = asm_name # "{_e64} " # ps64.AsmOperands;
+    }
 
     defm : VOPCXInstAliases<OpName, !substr(Gen.Suffix, 1), NAME, asm_name>;
 
     if ps32.Pfl.HasExtDPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(OpName#"_nosdst_e32"#"_dpp");
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e32_dpp#Gen.Suffix : VOPC_DPP16_SIMC<op{7-0}, psDPP,
-                                              Gen.Subtarget, asm_name>;
-      }
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32, asm_name>;
-      }
+      def _e32_dpp#Gen.Suffix : VOPC_DPP16_SIMC<op{7-0}, psDPP,
+                                            Gen.Subtarget, asm_name>;
+      def _e32_dpp8#Gen.Suffix : VOPC_DPP8<op{7-0}, ps32, asm_name>;
     }
     if ps64.Pfl.HasExtVOP3DPP then {
       defvar psDPP = !cast<VOP_DPP_Pseudo>(OpName#"_nosdst_e64"#"_dpp");
       defvar AsmDPP = ps64.Pfl.AsmVOP3DPP16;
-      let DecoderNamespace = "DPP"#Gen.DecoderNamespace in {
-        def _e64_dpp#Gen.Suffix
-            : VOPC64_DPP16_NoDst<{0, op}, psDPP, asm_name>,
-              SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget> {
-          let AsmString = asm_name # "{_e64_dpp} " # AsmDPP;
-        }
+      def _e64_dpp#Gen.Suffix
+          : VOPC64_DPP16_NoDst<{0, op}, psDPP, asm_name>,
+            SIMCInstr<psDPP.PseudoInstr, Gen.Subtarget> {
+        let AsmString = asm_name # "{_e64_dpp} " # AsmDPP;
       }
       defvar AsmDPP8 = ps64.Pfl.AsmVOP3DPP8;
-      let DecoderNamespace = "DPP8"#Gen.DecoderNamespace in {
-        def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_NoDst<{0, op}, ps64, asm_name> {
-          let AsmString = asm_name # "{_e64_dpp} " # AsmDPP8;
-        }
+      def _e64_dpp8#Gen.Suffix : VOPC64_DPP8_NoDst<{0, op}, ps64, asm_name> {
+        let AsmString = asm_name # "{_e64_dpp} " # AsmDPP8;
       }
     }
-  } // AssemblerPredicate = Gen.AssemblerPredicate
+  } // End AssemblerPredicate = Gen.AssemblerPredicate, DecoderNamespace = Gen.DecoderNamespace
 }
 
 multiclass VOPCX_Real_t16<GFXGen Gen, bits<9> op, string asm_name,
@@ -1873,21 +1835,19 @@ defm V_CMPX_CLASS_F64     : VOPCX_Real_gfx11_gfx12<0x0ff>;
 // GFX10.
 //===----------------------------------------------------------------------===//
 
-let AssemblerPredicate = isGFX10Only in {
+let AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10" in {
   multiclass VOPC_Real_gfx10<bits<9> op> {
-    let DecoderNamespace = "GFX10" in {
-      def _e32_gfx10 :
-        VOPC_Real<!cast<VOPC_Pseudo>(NAME#"_e32"), SIEncodingFamily.GFX10>,
-        VOPCe<op{7-0}>;
-      def _e64_gfx10 :
-        VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_e64"), SIEncodingFamily.GFX10>,
-        VOP3a_gfx10<{0, op}, !cast<VOP3_Pseudo>(NAME#"_e64").Pfl> {
-        // Encoding used for VOPC instructions encoded as VOP3 differs from
-        // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
-        bits<8> sdst;
-        let Inst{7-0} = sdst;
-      }
-    } // End DecoderNamespace = "GFX10"
+    def _e32_gfx10 :
+      VOPC_Real<!cast<VOPC_Pseudo>(NAME#"_e32"), SIEncodingFamily.GFX10>,
+      VOPCe<op{7-0}>;
+    def _e64_gfx10 :
+      VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_e64"), SIEncodingFamily.GFX10>,
+      VOP3a_gfx10<{0, op}, !cast<VOP3_Pseudo>(NAME#"_e64").Pfl> {
+      // Encoding used for VOPC instructions encoded as VOP3 differs from
+      // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
+      bits<8> sdst;
+      let Inst{7-0} = sdst;
+    }
 
     if !cast<VOPC_Pseudo>(NAME#"_e32").Pfl.HasExtSDWA9 then
     def _sdwa_gfx10 :
@@ -1898,22 +1858,20 @@ let AssemblerPredicate = isGFX10Only in {
   }
 
   multiclass VOPCX_Real_gfx10<bits<9> op> {
-    let DecoderNamespace = "GFX10" in {
-      def _e32_gfx10 :
-        VOPC_Real<!cast<VOPC_Pseudo>(NAME#"_nosdst_e32"), SIEncodingFamily.GFX10>,
-        VOPCe<op{7-0}> {
-          let AsmString = !subst("_nosdst", "", !cast<VOPC_Pseudo>(NAME#"_nosdst_e32").PseudoInstr)
-                          # " " # !cast<VOPC_Pseudo>(NAME#"_nosdst_e32").AsmOperands;
-        }
-
-      def _e64_gfx10 :
-        VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_nosdst_e64"), SIEncodingFamily.GFX10>,
-        VOP3a_gfx10<{0, op}, !cast<VOP3_Pseudo>(NAME#"_nosdst_e64").Pfl> {
-          let Inst{7-0} = ?; // sdst
-          let AsmString = !subst("_nosdst", "", !cast<VOP3_Pseudo>(NAME#"_nosdst_e64").Mnemonic)
-                          # "{_e64} " # !cast<VOP3_Pseudo>(NAME#"_nosdst_e64").AsmOperands;
-        }
-    } // End DecoderNamespace = "GFX10"
+    def _e32_gfx10 :
+      VOPC_Real<!cast<VOPC_Pseudo>(NAME#"_nosdst_e32"), SIEncodingFamily.GFX10>,
+      VOPCe<op{7-0}> {
+        let AsmString = !subst("_nosdst", "", !cast<VOPC_Pseudo>(NAME#"_nosdst_e32").PseudoInstr)
+                        # " " # !cast<VOPC_Pseudo>(NAME#"_nosdst_e32").AsmOperands;
+    }
+
+    def _e64_gfx10 :
+      VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_nosdst_e64"), SIEncodingFamily.GFX10>,
+      VOP3a_gfx10<{0, op}, !cast<VOP3_Pseudo>(NAME#"_nosdst_e64").Pfl> {
+        let Inst{7-0} = ?; // sdst
+        let AsmString = !subst("_nosdst", "", !cast<VOP3_Pseudo>(NAME#"_nosdst_e64").Mnemonic)
+                        # "{_e64} " # !cast<VOP3_Pseudo>(NAME#"_nosdst_e64").AsmOperands;
+    }
 
     if !cast<VOPC_Pseudo>(NAME#"_nosdst_e32").Pfl.HasExtSDWA9 then
     def _sdwa_gfx10 :
@@ -1925,7 +1883,7 @@ let AssemblerPredicate = isGFX10Only in {
 
     defm : VOPCXInstAliases<NAME, "gfx10">;
   }
-} // End AssemblerPredicate = isGFX10Only
+} // End AssemblerPredicate = isGFX10Only, DecoderNamespace = "GFX10"
 
 defm V_CMP_LT_I16     : VOPC_Real_gfx10<0x089>;
 defm V_CMP_EQ_I16     : VOPC_Real_gfx10<0x08a>;
@@ -1990,25 +1948,23 @@ defm V_CMPX_TRU_F16   : VOPCX_Real_gfx10<0x0ff>;
 // GFX6, GFX7, GFX10.
 //===----------------------------------------------------------------------===//
 
-let AssemblerPredicate = isGFX6GFX7 in {
+let AssemblerPredicate = isGFX6GFX7, DecoderNamespace = "GFX6GFX7" in {
   multiclass VOPC_Real_gfx6_gfx7<bits<9> op> {
-    let DecoderNamespace = "GFX6GFX7" in {
-      def _e32_gfx6_gfx7 :
-        VOPC_Real<!cast<VOPC_Pseudo>(NAME#"_e32"), SIEncodingFamily.SI>,
-        VOPCe<op{7-0}>;
-      def _e64_gfx6_gfx7 :
-        VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_e64"), SIEncodingFamily.SI>,
-        VOP3a_gfx6_gfx7<op, !cast<VOP3_Pseudo>(NAME#"_e64").Pfl> {
-        // Encoding used for VOPC instructions encoded as VOP3 differs from
-        // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
-        bits<8> sdst;
-        let Inst{7-0} = sdst;
-      }
-    } // End DecoderNamespace = "GFX6GFX7"
+    def _e32_gfx6_gfx7 :
+      VOPC_Real<!cast<VOPC_Pseudo>(NAME#"_e32"), SIEncodingFamily.SI>,
+      VOPCe<op{7-0}>;
+    def _e64_gfx6_gfx7 :
+      VOP3_Real<!cast<VOP3_Pseudo>(NAME#"_e64"), SIEncodingFamily.SI>,
+      VOP3a_gfx6_gfx7<op, !cast<VOP3_Pseudo>(NAME#"_e64").Pfl> {
+      // Encoding used for VOPC instructions encoded as VOP3 differs from
+      // VOP3e by destination name (sdst) as VOPC doesn't have vector dst.
+      bits<8> sdst;
+      let Inst{7-0} = sdst;
+    }
 
     defm : VOPCInstAliases<NAME, "gfx6_gfx7">;
   }
-} // End AssemblerPredicate = isGFX6GFX7
+} // End AssemblerPredicate = isGFX6GFX7, DecoderNamespace = "GFX6GFX7"
 
 multiclass VOPC_Real_gfx6_gfx7_gfx10<bits<9> op> :
   VOPC_Real_gfx6_gfx7<op>, VOPC_Real_gfx10<op>;
diff --git a/llvm/lib/Target/AMDGPU/VOPInstructions.td b/llvm/lib/Target/AMDGPU/VOPInstructions.td
index 801afabbdb1401..2989d05e968ef9 100644
--- a/llvm/lib/Target/AMDGPU/VOPInstructions.td
+++ b/llvm/lib/Target/AMDGPU/VOPInstructions.td
@@ -835,7 +835,7 @@ class VOP_DPP_Pseudo <string OpName, VOPProfile P, list<dag> pattern=[],
                                         AMDGPUAsmVariants.Disable);
   let Constraints = !if(P.NumSrcArgs, P.TieRegDPP # " = $vdst", "");
   let DisableEncoding = !if(P.NumSrcArgs, P.TieRegDPP, "");
-  let DecoderNamespace = "DPP";
+  let DecoderNamespace = "GFX8";
 
   VOPProfile Pfl = P;
 }
@@ -906,7 +906,7 @@ class VOP_DPP_Base <string OpName, VOPProfile P,
                                         AMDGPUAsmVariants.Disable);
   let Constraints = !if(P.NumSrcArgs, P.TieRegDPP # " = $vdst", "");
   let DisableEncoding = !if(P.NumSrcArgs, P.TieRegDPP, "");
-  let DecoderNamespace = "DPP";
+  let DecoderNamespace = "GFX8";
 }
 
 class VOP_DPP <string OpName, VOPProfile P, bit IsDPP16,
@@ -1350,7 +1350,7 @@ class VOP3_DPP16_Gen<bits<10> op, VOP_DPP_Pseudo ps, GFXGen Gen,
   VOP3_DPP16 <op, ps, Gen.Subtarget, opName> {
   let AssemblerPredicate = Gen.AssemblerPredicate;
   let True16Predicate = !if(ps.Pfl.IsRealTrue16, UseRealTrue16Insts, NoTrue16Predicate);
-  let DecoderNamespace = "DPP"#Gen.DecoderNamespace#
+  let DecoderNamespace = Gen.DecoderNamespace#
                          !if(ps.Pfl.IsRealTrue16, "", "_FAKE16");
 }
 
@@ -1463,7 +1463,7 @@ multiclass VOP3_Real_dpp_with_name<GFXGen Gen, bits<10> op, string opName,
 multiclass VOP3_Real_dpp8_Base<GFXGen Gen, bits<10> op, string opName = NAME> {
   defvar ps = !cast<VOP3_Pseudo>(opName#"_e64");
   def _e64_dpp8#Gen.Suffix : Base_VOP3_DPP8<op, ps> {
-    let DecoderNamespace = "DPP8"#Gen.DecoderNamespace;
+    let DecoderNamespace = Gen.DecoderNamespace;
     let AssemblerPredicate = Gen.AssemblerPredicate;
   }
 }
@@ -1473,7 +1473,7 @@ multiclass VOP3Dot_Real_dpp8_Base<GFXGen Gen, bits<10> op, string opName = NAME>
   def _e64_dpp8#Gen.Suffix : Base_VOP3_DPP8<op, ps> {
     let Inst{11} = ?;
     let Inst{12} = ?;
-    let DecoderNamespace = "DPP8"#Gen.DecoderNamespace;
+    let DecoderNamespace = Gen.DecoderNamespace;
     let AssemblerPredicate = Gen.AssemblerPredicate;
   }
 }
@@ -1482,7 +1482,7 @@ multiclass VOP3_Real_dpp8_with_name<GFXGen Gen, bits<10> op, string opName,
                                     string asmName> {
   defvar ps = !cast<VOP3_Pseudo>(opName#"_e64");
   let AsmString = asmName # ps.Pfl.AsmVOP3DPP8,
-      DecoderNamespace = "DPP8"#Gen.DecoderNamespace#
+      DecoderNamespace = Gen.DecoderNamespace#
                          !if(ps.Pfl.IsRealTrue16, "", "_FAKE16"),
       True16Predicate = !if(ps.Pfl.IsRealTrue16, UseRealTrue16Insts,
                             NoTrue16Predicate) in {
@@ -1505,7 +1505,7 @@ multiclass VOP3be_Real_dpp<GFXGen Gen, bits<10> op, string opName,
   defvar dpp_ps = !cast<VOP_DPP_Pseudo>(opName #"_e64" #"_dpp");
   def _e64_dpp#Gen.Suffix : Base_VOP3b_DPP16<op, dpp_ps, asmName>,
                             SIMCInstr<dpp_ps.PseudoInstr, Gen.Subtarget> {
-    let DecoderNamespace = "DPP"#Gen.DecoderNamespace;
+    let DecoderNamespace = Gen.DecoderNamespace;
     let AssemblerPredicate = Gen.AssemblerPredicate;
   }
 }
@@ -1514,7 +1514,7 @@ multiclass VOP3be_Real_dpp8<GFXGen Gen, bits<10> op, string opName,
                             string asmName> {
   defvar ps = !cast<VOP3_Pseudo>(opName #"_e64");
   def _e64_dpp8#Gen.Suffix : VOP3b_DPP8_Base<op, ps, asmName> {
-    let DecoderNamespace = "DPP8"#Gen.DecoderNamespace;
+    let DecoderNamespace = Gen.DecoderNamespace;
     let AssemblerPredicate = Gen.AssemblerPredicate;
   }
 }



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