From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Tue, 8 Jul 2014 05:46:04 +0000 (+0000)
Subject: Headers: conditionalise more declarations
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9eb8a68c1b6fd88d3895d963bef304f0f77d816a;p=clang

Headers: conditionalise more declarations

Protect MMX specific declarations under a __MMX__ guard.  This header can be
included on non-x86 architectures (e.g. ARM) which do not support the MMX ISA.
Use the preprocessor to prevent these declarations from being processed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212512 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Headers/Intrin.h b/lib/Headers/Intrin.h
index cad3a3a0bd..d8dc0a4831 100644
--- a/lib/Headers/Intrin.h
+++ b/lib/Headers/Intrin.h
@@ -41,12 +41,14 @@
 extern "C" {
 #endif
 
+#if defined(__MMX__)
 /* And the random ones that aren't in those files. */
 __m64 _m_from_float(float);
 __m64 _m_from_int(int _l);
 void _m_prefetch(void *);
 float _m_to_float(__m64);
 int _m_to_int(__m64 _M);
+#endif
 
 /* Other assorted instruction intrinsics. */
 void __addfsbyte(unsigned long, unsigned char);
diff --git a/test/Headers/arm-intrin.c b/test/Headers/arm-intrin.c
new file mode 100644
index 0000000000..294bc33298
--- /dev/null
+++ b/test/Headers/arm-intrin.c
@@ -0,0 +1,6 @@
+// RUN: %clang -target armv7-windows -I %S/Inputs/include -Xclang -verify -E %s
+// expected-no-diagnostics
+
+typedef __SIZE_TYPE__ size_t;
+#include <Intrin.h>
+