Language feature: pointer sized int types. (#2401)

* Language feature: pointer sized int types.

* Fix.

* small change to test.

* Fix stdlib.

* Fix.

* Fix.

* Add typedef for `size_t` in stdlib.

* Fix test.

* Add `intptr_t::size` constant.

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/source/slang/slang-emit-hlsl.cpp b/source/slang/slang-emit-hlsl.cpp
index 48fe86fff..20fcc5bed 100644
--- a/source/slang/slang-emit-hlsl.cpp
+++ b/source/slang/slang-emit-hlsl.cpp
@@ -467,10 +467,12 @@ bool HLSLSourceEmitter::tryEmitInstExprImpl(IRInst* inst, const EmitOpInfo& inOu
                 case BaseType::Int16:
                 case BaseType::Int:
                 case BaseType::Int64:
+                case BaseType::IntPtr:
                 case BaseType::UInt8:
                 case BaseType::UInt16:
                 case BaseType::UInt:
                 case BaseType::UInt64:
+                case BaseType::UIntPtr:
                 case BaseType::Bool:
                     // Because the intermediate type will always
                     // be an integer type, we can convert to
@@ -809,11 +811,26 @@ void HLSLSourceEmitter::emitSimpleTypeImpl(IRType* type)
         case kIROp_DoubleType:
         case kIROp_Int16Type:
         case kIROp_UInt16Type:
-        {
         case kIROp_HalfType:
+        {
             m_writer->emit(getDefaultBuiltinTypeName(type->getOp()));
             return;
         }
+#if SLANG_PTR_IS_64
+        case kIROp_IntPtrType:
+            m_writer->emit("int64_t");
+            return;
+        case kIROp_UIntPtrType:
+            m_writer->emit("uint64_t");
+            return;
+#else
+        case kIROp_IntPtrType:
+            m_writer->emit("int");
+            return;
+        case kIROp_UIntPtrType:
+            m_writer->emit("uint");
+            return;
+#endif
         case kIROp_StructType:
             m_writer->emit(getName(type));
             return;
@@ -856,7 +873,7 @@ void HLSLSourceEmitter::emitSimpleTypeImpl(IRType* type)
         case kIROp_NativeStringType:
         case kIROp_StringType: 
         {
-            m_writer->emit("int"); 
+            m_writer->emit("string"); 
             return;
         }
         default: break;