Further implementation of SPIRV direct emit. (#1920)

* Further implementation of SPIRV direct emit.

This change implements:
- Struct, Vector, Matrix and Unsized Array types.
- Basic arithmetic opcodes, vector construct, swizzle etc.
- getElementPtr, getElement, fieldAddress, extractField.
- SPIRV target intrinsics with SPIRV asm code in stdlib.
- RWStructuredBuffer and StructuredBuffer.
- Pointer storage class propagation.
- Control flow.

* Fix.

1 files changed, 6 insertions, 0 deletions

diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index fe60fb480..60aaafa83 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -2604,6 +2604,12 @@ namespace Slang
             operands);
     }
 
+    IRPtrType* IRBuilder::getPtrType(IROp op, IRType* valueType, IRIntegerValue addressSpace)
+    {
+        IRInst* operands[] = {valueType, getIntValue(getIntType(), addressSpace)};
+        return (IRPtrType*)getType(op, 2, operands);
+    }
+
     IRArrayTypeBase* IRBuilder::getArrayTypeBase(
         IROp    op,
         IRType* elementType,