AMDGPU: Define and Use HasInterpInsts for interp inst definitions (#84102)

Author: changpeng

llvm/lib/Target/AMDGPU/AMDGPU.td

@@ -1877,6 +1877,9 @@ def NotLDSRequiresM0Init : Predicate<"!Subtarget->ldsRequiresM0Init()">;
 def HasExpOrExportInsts : Predicate<"Subtarget->hasExpOrExportInsts()">,
   AssemblerPredicate<(all_of (not FeatureGFX90AInsts))>;
 
+def HasInterpInsts : Predicate<"Subtarget->hasInterpInsts()">,
+  AssemblerPredicate<(all_of FeatureGFX11Insts)>;
+
 def HasDSAddTid : Predicate<"Subtarget->getGeneration() >= AMDGPUSubtarget::GFX9">,
   AssemblerPredicate<(all_of FeatureGFX9Insts)>;
 

llvm/lib/Target/AMDGPU/GCNSubtarget.h

@@ -651,6 +651,10 @@ class GCNSubtarget final : public AMDGPUGenSubtargetInfo,
     return !hasGFX940Insts();
   }
 
+  bool hasInterpInsts() const {
+    return GFX11Insts;
+  }
+
   // DS_ADD_F64/DS_ADD_RTN_F64
   bool hasLdsAtomicAddF64() const { return hasGFX90AInsts(); }
 

llvm/lib/Target/AMDGPU/VINTERPInstructions.td

@@ -105,7 +105,7 @@ class VOP3_VINTERP_F16 <list<ValueType> ArgVT> : VOPProfile<ArgVT> {
 // VINTERP Pseudo Instructions
 //===----------------------------------------------------------------------===//
 
-let SubtargetPredicate = isGFX11Plus in {
+let SubtargetPredicate = HasInterpInsts in {
 
 let Uses = [M0, EXEC, MODE] in {
 def V_INTERP_P10_F32_inreg : VINTERP_Pseudo <"v_interp_p10_f32", VOP3_VINTERP_F32>;
@@ -123,7 +123,7 @@ def V_INTERP_P2_RTZ_F16_F32_inreg :
   VINTERP_Pseudo <"v_interp_p2_rtz_f16_f32", VOP3_VINTERP_F16<[f16, f32, f32, f32]>>;
 } // Uses = [M0, EXEC]
 
-} // SubtargetPredicate = isGFX11Plus
+} // SubtargetPredicate = HasInterpInsts.
 
 class VInterpF32Pat <SDPatternOperator op, Instruction inst> : GCNPat <
    (f32 (op