Fix various intptr_t issues by defining its width in `getIntTypeInfo` (#6786)

* Define a bit size for the intptr types

* Fix intptr_t sign

* Extend intptr test to check for previously broken operations

* Fix intptr vector test on CUDA

* Handle intptr size in getAnyValueSize

* Fix formatting

* Try with __ARM_ARCH_ISA_64

* On macs, int64_t != intptr_t

Yikes

* Move define to prelude header

* Also check apple in host-prelude

* Fix define location

3 files changed, 32 insertions, 3 deletions

diff --git a/source/slang/slang-emit-cuda.cpp b/source/slang/slang-emit-cuda.cpp
index 8657b3707..bb6941907 100644
--- a/source/slang/slang-emit-cuda.cpp
+++ b/source/slang/slang-emit-cuda.cpp
@@ -123,6 +123,18 @@ UnownedStringSlice CUDASourceEmitter::getVectorPrefix(IROp op)
     case kIROp_UInt64Type:
         return UnownedStringSlice("ulonglong");
 
+#if SLANG_PTR_IS_64
+    case kIROp_IntPtrType:
+        return UnownedStringSlice("longlong");
+    case kIROp_UIntPtrType:
+        return UnownedStringSlice("ulonglong");
+#else
+    case kIROp_IntPtrType:
+        return UnownedStringSlice("int");
+    case kIROp_UIntPtrType:
+        return UnownedStringSlice("uint");
+#endif
+
     case kIROp_HalfType:
         return UnownedStringSlice("__half");
 
diff --git a/source/slang/slang-ir-any-value-marshalling.cpp b/source/slang/slang-ir-any-value-marshalling.cpp
index b3bcf3316..9fb414db1 100644
--- a/source/slang/slang-ir-any-value-marshalling.cpp
+++ b/source/slang/slang-ir-any-value-marshalling.cpp
@@ -862,11 +862,19 @@ SlangInt _getAnyValueSizeRaw(IRType* type, SlangInt offset)
     case kIROp_FloatType:
     case kIROp_UIntType:
     case kIROp_BoolType:
+#if SLANG_PTR_IS_32
+    case kIROp_IntPtrType:
+    case kIROp_UIntPtrType:
+#endif
         return alignUp(offset, 4) + 4;
     case kIROp_UInt64Type:
     case kIROp_Int64Type:
     case kIROp_DoubleType:
     case kIROp_PtrType:
+#if SLANG_PTR_IS_64
+    case kIROp_IntPtrType:
+    case kIROp_UIntPtrType:
+#endif
         return alignUp(offset, 8) + 8;
     case kIROp_Int16Type:
     case kIROp_UInt16Type:
diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index c1cec36fe..a99eddebb 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -7769,6 +7769,12 @@ IntInfo getIntTypeInfo(const IRType* intType)
         return {32, false};
     case kIROp_UInt64Type:
         return {64, false};
+    case kIROp_UIntPtrType:
+#if SLANG_PTR_IS_32
+        return {32, false};
+#else
+        return {64, false};
+#endif
     case kIROp_Int8Type:
         return {8, true};
     case kIROp_Int16Type:
@@ -7777,9 +7783,12 @@ IntInfo getIntTypeInfo(const IRType* intType)
         return {32, true};
     case kIROp_Int64Type:
         return {64, true};
-
-    case kIROp_IntPtrType:  // target platform dependent
-    case kIROp_UIntPtrType: // target platform dependent
+    case kIROp_IntPtrType:
+#if SLANG_PTR_IS_32
+        return {32, true};
+#else
+        return {64, true};
+#endif
     default:
         SLANG_UNEXPECTED("Unhandled type passed to getIntTypeInfo");
     }