[llvm] [AMDGPU] Insert exec-forced V_NOP after V_PERM_PK16 (gfx1250 hazard) (PR #214406)

[Jay Foad via llvm-commits]

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@@ -1199,6 +1199,60 @@ class SIInstrInfo final : public AMDGPUGenInstrInfo {
            Opc == AMDGPU::GLOBAL_WBINV;
   }
 
+  static bool isF16PseudoScalarTrans(unsigned Opcode) {
+    return Opcode == AMDGPU::V_S_EXP_F16_e64 ||
+           Opcode == AMDGPU::V_S_LOG_F16_e64 ||
+           Opcode == AMDGPU::V_S_RCP_F16_e64 ||
+           Opcode == AMDGPU::V_S_RSQ_F16_e64 ||
+           Opcode == AMDGPU::V_S_SQRT_F16_e64;
+  }
+
+  static bool isPseudoScalarTrans(unsigned Opcode) {
+    return isF16PseudoScalarTrans(Opcode) ||
+           Opcode == AMDGPU::V_S_EXP_F32_e64 ||
+           Opcode == AMDGPU::V_S_LOG_F32_e64 ||
+           Opcode == AMDGPU::V_S_RCP_F32_e64 ||
+           Opcode == AMDGPU::V_S_RSQ_F32_e64 ||
+           Opcode == AMDGPU::V_S_SQRT_F32_e64;
+  }
+
+  static bool isF64Trans(unsigned Opcode) {
+    return Opcode == AMDGPU::V_RCP_F64_e32 || Opcode == AMDGPU::V_RCP_F64_e64 ||
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jayfoad wrote:

Do we need to match alternatives like V_RCP_F64_dpp and V_RCP_F64_dpp8 here?

https://github.com/llvm/llvm-project/pull/214406