From: Nathan Chancellor <nathan@xxxxxxxxxx>
Add __diag macros similar to those in compiler-gcc.h, so that warnings
that need to be adjusted for specific cases but not globally can be
ignored for LLVM compilation mode as well.
Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: llvm@xxxxxxxxxxxxxxx
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
---
include/linux/compiler-clang.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index 3c4de9b6c6e3..f1aa41d520bd 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -68,3 +68,25 @@
#define __nocfi __attribute__((__no_sanitize__("cfi")))
#define __cficanonical __attribute__((__cfi_canonical_jump_table__))
+
+/*
+ * Turn individual warnings and errors on and off locally, depending
+ * on version.
+ */
+#define __diag_clang(version, severity, s) \
+ __diag_clang_ ## version(__diag_clang_ ## severity s)
+
+/* Severity used in pragma directives */
+#define __diag_clang_ignore ignored
+#define __diag_clang_warn warning
+#define __diag_clang_error error
+
+#define __diag_str1(s) #s
+#define __diag_str(s) __diag_str1(s)
+#define __diag(s) _Pragma(__diag_str(clang diagnostic s))
+
+#if CONFIG_CLANG_VERSION >= 110000
+#define __diag_clang_11(s) __diag(s)
+#else
+#define __diag_clang_11(s)
+#endif
--
2.35.1
