[llvm] [AMDGPU] Use consistent DecoderNamespace for wave64 instructions. NFC. (PR #81863)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Jay Foad (jayfoad)

<details>
<summary>Changes</summary>

For wave64 WMMA instructions, putting W64 in the DecoderNamespace is
more descriptive than WMMA, and matches other uses for GFX12
GLOBAL_LOAD_TR instructions.


---
Full diff: https://github.com/llvm/llvm-project/pull/81863.diff


2 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp (+2-2) 
- (modified) llvm/lib/Target/AMDGPU/VOP3PInstructions.td (+2-2) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index b307865275d075..98988f881f1b44 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -662,11 +662,11 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
     if (Res)
       break;
 
-    Res = tryDecodeInst(DecoderTableWMMAGFX1164, MI, QW, Address, CS);
+    Res = tryDecodeInst(DecoderTableGFX11W6464, MI, QW, Address, CS);
     if (Res)
       break;
 
-    Res = tryDecodeInst(DecoderTableWMMAGFX1264, MI, QW, Address, CS);
+    Res = tryDecodeInst(DecoderTableGFX12W6464, MI, QW, Address, CS);
   } while (false);
 
   if (Res && AMDGPU::isMAC(MI.getOpcode())) {
diff --git a/llvm/lib/Target/AMDGPU/VOP3PInstructions.td b/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
index ef14a587c42e79..886858b5ab1ad3 100644
--- a/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
+++ b/llvm/lib/Target/AMDGPU/VOP3PInstructions.td
@@ -1414,7 +1414,7 @@ multiclass VOP3P_Real_WMMA_gfx12 <bits<7> op, VOP3PWMMA_Profile WMMAP> {
 }
 
 multiclass VOP3P_Real_WMMA_gfx12w64 <bits<7> op, VOP3PWMMA_Profile WMMAP> {
-  let WaveSizePredicate = isWave64, DecoderNamespace = "WMMAGFX12" in {
+  let WaveSizePredicate = isWave64, DecoderNamespace = "GFX12W64" in {
     defm _twoaddr : VOP3P_WMMA_Real_Base <GFX12Gen, op, WMMAP>;
   }
 }
@@ -1544,7 +1544,7 @@ multiclass VOP3P_Real_WMMA <bits<7> op> {
   let WaveSizePredicate = isWave32, DecoderNamespace = "GFX11" in {
     defm _twoaddr_w32 : VOP3P_Real_Base <GFX11Gen, op>;
   }
-  let WaveSizePredicate = isWave64, DecoderNamespace = "WMMAGFX11" in {
+  let WaveSizePredicate = isWave64, DecoderNamespace = "GFX11W64" in {
     defm _twoaddr_w64 : VOP3P_Real_Base <GFX11Gen, op>;
   }
 }

``````````

</details>


https://github.com/llvm/llvm-project/pull/81863