diff --git a/source/slang/hlsl.meta.slang b/source/slang/hlsl.meta.slang
index 81b28b30a9..173b97fd37 100644
--- a/source/slang/hlsl.meta.slang
+++ b/source/slang/hlsl.meta.slang
@@ -23667,6 +23667,8 @@ void coopVecOuterProductAccumulate<T : __BuiltinArithmeticType, let M : int, let
 {
     __target_switch
     {
+    case hlsl:
+        __intrinsic_asm "$0.OuterProductAccumulate($1, $2, $3, $4, $5, $6)";
     case spirv:
         let matrixInterpretationSpirv : int = __getSpvCoopVecComponentType(matrixInterpretation);
         let memoryLayoutSpirv : int = __getSpvCoopVecMatrixLayout(memoryLayout);
@@ -23742,6 +23744,8 @@ void coopVecReduceSumAccumulate<T : __BuiltinArithmeticType, let N : int>(
 {
     __target_switch
     {
+    case hlsl:
+        __intrinsic_asm "$0.ReduceSumAccumulate($1, $2)";
     case spirv:
         let bufferPtr = buffer.GetBufferPointer();
         spirv_asm