BOOL_BITFIELD isn't defined when building libgcc. I checked in this
patch to restore GCC 4.7 bootstrap on x86. GCC 4.6 is OK.
H.J.
---
Index: ChangeLog
===================================================================
--- ChangeLog (revision 196998)
+++ ChangeLog (working copy)
@@ -1,5 +1,10 @@
2013-03-22 H.J. Lu <hongjiu...@intel.com>
+ * config/i386/i386.h (ix86_args): Define only if USED_FOR_TARGET
+ isn't defined.
+
+2013-03-22 H.J. Lu <hongjiu...@intel.com>
+
PR target/56560
* config/i386/i386.c (init_cumulative_args): Also set
cum->callee_return_avx256_p.
Index: config/i386/i386.h
===================================================================
--- config/i386/i386.h (revision 196998)
+++ config/i386/i386.h (working copy)
@@ -1474,6 +1474,7 @@ enum reg_class
/* 1 if N is a possible register number for function argument passing. */
#define FUNCTION_ARG_REGNO_P(N) ix86_function_arg_regno_p (N)
+#ifndef USED_FOR_TARGET
/* Define a data type for recording info about an argument list
during the scan of that argument list. This data type should
hold all necessary information about the function itself
@@ -1507,6 +1508,7 @@ typedef struct ix86_args {
/* Nonzero if it returns 256bit AVX modes. */
BOOL_BITFIELD callee_return_avx256_p : 1;
} CUMULATIVE_ARGS;
+#endif
/* Initialize a variable CUM of type CUMULATIVE_ARGS
for a call to a function whose data type is FNTYPE.
