1 files changed, 51 insertions, 0 deletions
diff --git a/test/Preprocessor/is_target_arm.c b/test/Preprocessor/is_target_arm.c
new file mode 100644
index 0000000000000..9e1afe6ec6c15
--- /dev/null
+++ b/test/Preprocessor/is_target_arm.c
@@ -0,0 +1,51 @@
+// RUN: %clang_cc1 -fsyntax-only -triple thumbv7--windows-msvc19.11.0 -verify %s
+// RUN: %clang_cc1 -fsyntax-only -triple armv7--windows-msvc19.11.0 -DARM -verify %s
+// expected-no-diagnostics
+
+// ARM does match arm and thumb.
+#if !__is_target_arch(arm)
+  #error "mismatching arch"
+#endif
+
+#if __is_target_arch(armeb) || __is_target_arch(armebv7) || __is_target_arch(thumbeb) || __is_target_arch(thumbebv7)
+  #error "mismatching arch"
+#endif
+
+// ARMV7 does match armv7 and thumbv7.
+#if !__is_target_arch(armv7)
+  #error "mismatching arch"
+#endif
+
+// ARMV6 does not match armv7 or thumbv7.
+#if __is_target_arch(armv6)
+  #error "mismatching arch"
+#endif
+
+#if __is_target_arch(arm64)
+  #error "mismatching arch"
+#endif
+
+#ifndef ARM
+
+// Allow checking for precise arch + subarch.
+#if !__is_target_arch(thumbv7)
+  #error "mismatching arch"
+#endif
+
+// But also allow checking for the arch without subarch.
+#if !__is_target_arch(thumb)
+  #error "mismatching arch"
+#endif
+
+// Same arch with a different subarch doesn't match.
+#if __is_target_arch(thumbv6)
+  #error "mismatching arch"
+#endif
+
+#else
+
+#if __is_target_arch(thumbv7) || __is_target_arch(thumb)
+  #error "mismatching arch"
+#endif
+
+#endif