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-rw-r--r--gcc/doc/cpp.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi
index aaf83f9..0eaece1 100644
--- a/gcc/doc/cpp.texi
+++ b/gcc/doc/cpp.texi
@@ -2239,6 +2239,10 @@ If GCC cannot determine the current date, it will emit a warning message
These macros are defined when the target processor supports atomic compare
and swap operations on operands 1, 2, 4, 8 or 16 bytes in length, respectively.
+@item __GCC_HAVE_DWARF2_CFI_ASM
+This macro is defined when the compiler is emitting Dwarf2 CFI directives
+to the assembler. When this is defined, it is possible to emit those same
+directives in inline assembly.
@end table
@node System-specific Predefined Macros