fix build

Author: KungFuDonkey

clang/lib/CodeGen/CGHLSLBuiltins.cpp

@@ -240,6 +240,23 @@ static Intrinsic::ID getFirstBitHighIntrinsic(CGHLSLRuntime &RT, QualType QT) {
   return RT.getFirstBitUHighIntrinsic();
 }
 
+// Return wave active sum that corresponds to the QT scalar type
+static Intrinsic::ID getWaveActiveSumIntrinsic(llvm::Triple::ArchType Arch,
+                                               CGHLSLRuntime &RT, QualType QT) {
+  switch (Arch) {
+  case llvm::Triple::spirv:
+    return Intrinsic::spv_wave_reduce_sum;
+  case llvm::Triple::dxil: {
+    if (QT->isUnsignedIntegerType())
+      return Intrinsic::dx_wave_reduce_usum;
+    return Intrinsic::dx_wave_reduce_sum;
+  }
+  default:
+    llvm_unreachable("Intrinsic WaveActiveSum"
+                     " not supported by target architecture");
+  }
+}
+
 // Return wave active product that corresponds to the QT scalar type
 static Intrinsic::ID getWaveActiveProductIntrinsic(llvm::Triple::ArchType Arch,
                                                    CGHLSLRuntime &RT, QualType QT) {

clang/lib/CodeGen/CGHLSLRuntime.h

@@ -150,7 +150,6 @@ class CGHLSLRuntime {
   GENERATE_HLSL_INTRINSIC_FUNCTION(WaveIsFirstLane, wave_is_first_lane)
   GENERATE_HLSL_INTRINSIC_FUNCTION(WaveGetLaneCount, wave_get_lane_count)
   GENERATE_HLSL_INTRINSIC_FUNCTION(WaveReadLaneAt, wave_readlane)
-  GENERATE_HLSL_INTRINSIC_FUNCTION_UNSIGNED(WaveActiveSum, wave_reduce_sum, true, false);
   GENERATE_HLSL_INTRINSIC_FUNCTION(FirstBitUHigh, firstbituhigh)
   GENERATE_HLSL_INTRINSIC_FUNCTION(FirstBitSHigh, firstbitshigh)
   GENERATE_HLSL_INTRINSIC_FUNCTION(FirstBitLow, firstbitlow)