sirit: Add TypeSInt/TypeUInt helpers

Provides shorthands for specific signedness, so that usage code doesn't
need to explicitly use raw booleans.

TypeUInt(32), is easier to gloss than TypeInt(32, false), especially for
those not familiar with the API.

include/sirit/sirit.h

@@ -125,6 +125,12 @@ class Module {
     /// Returns type integer.
     Id TypeInt(int width, bool is_signed);
 
+    /// Returns type signed integer.
+    Id TypeSInt(int width);
+
+    /// Returns type unsigned integer.
+    Id TypeUInt(int width);
+
     /// Returns type float.
     Id TypeFloat(int width);
 

src/instructions/type.cpp

@@ -28,6 +28,14 @@ Id Module::TypeInt(int width, bool is_signed) {
     return *declarations << OpId{spv::Op::OpTypeInt} << width << is_signed << EndOp{};
 }
 
+Id Module::TypeSInt(int width) {
+    return TypeInt(width, true);
+}
+
+Id Module::TypeUInt(int width) {
+    return TypeInt(width, false);
+}
+
 Id Module::TypeFloat(int width) {
     declarations->Reserve(3);
     return *declarations << OpId{spv::Op::OpTypeFloat} << width << EndOp{};