[PATCH] D98959: [OpenCL] Add as_size/ptrdiff/intptr/uintptr_t operators

[Sven van Haastregt via Phabricator via cfe-commits]

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size_t and friends are built-in scalar data types and s6.4.4.2 of the
OpenCL C Specification says the `as_type()` operator must be available
for these data types.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D98959

Files:
  clang/lib/Headers/opencl-c-base.h
  clang/test/SemaOpenCL/as_type.cl


Index: clang/test/SemaOpenCL/as_type.cl
===================================================================
--- clang/test/SemaOpenCL/as_type.cl
+++ clang/test/SemaOpenCL/as_type.cl
@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 %s -emit-llvm -triple spir-unknown-unknown -finclude-default-header -o - -verify -fsyntax-only
+// RUN: %clang_cc1 %s -emit-llvm -DBITS=32 -triple spir-unknown-unknown -finclude-default-header -fdeclare-opencl-builtins -o - -verify -fsyntax-only
+// RUN: %clang_cc1 %s -emit-llvm -DBITS=64 -triple spir64-unknown-unknown -finclude-default-header -fdeclare-opencl-builtins -o - -verify -fsyntax-only
 
 char3 f1(char16 x) {
   return  __builtin_astype(x, char3); // expected-error{{invalid reinterpretation: sizes of 'char3' (vector of 3 'char' values) and '__private char16' (vector of 16 'char' values) must match}}
@@ -12,3 +13,15 @@
     char src = 1;
     int dst = as_int(src); // expected-error{{invalid reinterpretation: sizes of 'int' and '__private char' must match}}
 }
+
+void target_dependent(int i, long l) {
+  size_t size1 = as_size_t(i);
+#if BITS == 64
+  // expected-error at -2{{sizes of 'size_t' (aka 'unsigned long') and '__private int' must match}}
+#endif
+
+  size_t size2 = as_size_t(l);
+#if BITS == 32
+  // expected-error at -2{{sizes of 'size_t' (aka 'unsigned int') and '__private long' must match}}
+#endif
+}
Index: clang/lib/Headers/opencl-c-base.h
===================================================================
--- clang/lib/Headers/opencl-c-base.h
+++ clang/lib/Headers/opencl-c-base.h
@@ -545,6 +545,11 @@
 #define as_half16(x) __builtin_astype((x), half16)
 #endif // cl_khr_fp16
 
+#define as_size_t(x) __builtin_astype((x), size_t)
+#define as_ptrdiff_t(x) __builtin_astype((x), ptrdiff_t)
+#define as_intptr_t(x) __builtin_astype((x), intptr_t)
+#define as_uintptr_t(x) __builtin_astype((x), uintptr_t)
+
 // OpenCL v1.1 s6.9, v1.2/2.0 s6.10 - Function qualifiers
 
 #define __kernel_exec(X, typen) __kernel \


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