Remove DARWIN_PREFER_DWARF and dead code

This removes the always defined DARWIN_PREFER_DWARF and the code
guarded by it being not defined, removing the possibility to
default some i386 darwin configurations to STABS when it would
not be defined.

2021-09-10  Richard Biener  <rguenther@suse.de>

	* config/darwin.h (DARWIN_PREFER_DWARF): Do not define.
	* config/i386/darwin.h (PREFERRED_DEBUGGING_TYPE): Do not
	change based on DARWIN_PREFER_DWARF not being defined.

diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h
index f1d92f8..6396586 100644 (file)
--- a/gcc/config/darwin.h
+++ b/gcc/config/darwin.h
@@ -499,9 +499,8 @@ extern GTY(()) int darwin_ms_struct;
 /* We now require C++11 to bootstrap and newer tools than those based on
    stabs, so require DWARF-2, even if stabs is supported by the assembler.  */
 
-#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
-#define DARWIN_PREFER_DWARF
 #define DWARF2_DEBUGGING_INFO 1
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 
 #ifdef HAVE_AS_STABS_DIRECTIVE
 #define DBX_DEBUGGING_INFO 1

diff --git a/gcc/config/i386/darwin.h b/gcc/config/i386/darwin.h
index da0ae5b..c4a6f4d 100644 (file)
--- a/gcc/config/i386/darwin.h
+++ b/gcc/config/i386/darwin.h
@@ -264,17 +264,6 @@ along with GCC; see the file COPYING3.  If not see
       target_flags &= ~MASK_MACHO_DYNAMIC_NO_PIC;                      \
   } while (0)
 
-/* Darwin on x86_64 uses dwarf-2 by default.  Pre-darwin9 32-bit
-   compiles default to stabs+.  darwin9+ defaults to dwarf-2.  */
-#ifndef DARWIN_PREFER_DWARF
-#undef PREFERRED_DEBUGGING_TYPE
-#ifdef HAVE_AS_STABS_DIRECTIVE
-#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
-#else
-#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
-#endif
-#endif
-
 /* Darwin uses the standard DWARF register numbers but the default
    register numbers for STABS.  Fortunately for 64-bit code the
    default and the standard are the same.  */