PR middle-end/38584

[pf3gnuchains/gcc-fork.git] / gcc / defaults.h

diff --git a/gcc/defaults.h b/gcc/defaults.h
index cc41b6e..282a14a 100644 (file)
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -551,12 +551,24 @@ along with GCC; see the file COPYING3.  If not see
 #define PUSH_ARGS_REVERSED 0
 #endif
 
+/* Default value for the alignment (in bits) a C conformant malloc has to
+   provide. This default is intended to be safe and always correct.  */
+#ifndef MALLOC_ABI_ALIGNMENT
+#define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
+#endif
+
 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
    STACK_BOUNDARY is required.  */
 #ifndef PREFERRED_STACK_BOUNDARY
 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
 #endif
 
+/* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
+   defined.  */
+#ifndef INCOMING_STACK_BOUNDARY
+#define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
+#endif
+
 #ifndef TARGET_DEFAULT_PACK_STRUCT
 #define TARGET_DEFAULT_PACK_STRUCT 0
 #endif
@@ -651,16 +663,6 @@ along with GCC; see the file COPYING3.  If not see
 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
 #endif
 
-/* Define codes for all the float formats that we know of.  */
-#define UNKNOWN_FLOAT_FORMAT 0
-#define IEEE_FLOAT_FORMAT 1
-#define VAX_FLOAT_FORMAT 2
-
-/* Default to IEEE float if not specified.  Nearly all machines use it.  */
-#ifndef TARGET_FLOAT_FORMAT
-#define        TARGET_FLOAT_FORMAT     IEEE_FLOAT_FORMAT
-#endif
-
 #ifndef LARGEST_EXPONENT_IS_NORMAL
 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
 #endif
@@ -669,32 +671,6 @@ along with GCC; see the file COPYING3.  If not see
 #define ROUND_TOWARDS_ZERO 0
 #endif
 
-#ifndef MODE_HAS_NANS
-#define MODE_HAS_NANS(MODE)                                    \
-  (FLOAT_MODE_P (MODE)                                         \
-   && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT                 \
-   && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE)))
-#endif
-
-#ifndef MODE_HAS_INFINITIES
-#define MODE_HAS_INFINITIES(MODE)                              \
-  (FLOAT_MODE_P (MODE)                                         \
-   && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT                 \
-   && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE)))
-#endif
-
-#ifndef MODE_HAS_SIGNED_ZEROS
-#define MODE_HAS_SIGNED_ZEROS(MODE) \
-  (FLOAT_MODE_P (MODE) && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
-#endif
-
-#ifndef MODE_HAS_SIGN_DEPENDENT_ROUNDING
-#define MODE_HAS_SIGN_DEPENDENT_ROUNDING(MODE)                 \
-  (FLOAT_MODE_P (MODE)                                         \
-   && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT                 \
-   && !ROUND_TOWARDS_ZERO)
-#endif
-
 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
 #endif
@@ -739,7 +715,7 @@ along with GCC; see the file COPYING3.  If not see
 /* By default, only attempt to parallelize bitwise operations, and
    possibly adds/subtracts using bit-twiddling.  */
 #ifndef UNITS_PER_SIMD_WORD
-#define UNITS_PER_SIMD_WORD UNITS_PER_WORD
+#define UNITS_PER_SIMD_WORD(MODE) UNITS_PER_WORD
 #endif
 
 /* Determine whether __cxa_atexit, rather than atexit, is used to
@@ -902,6 +878,10 @@ along with GCC; see the file COPYING3.  If not see
 #define LEGITIMATE_PIC_OPERAND_P(X) 1
 #endif
 
+#ifndef TARGET_MEM_CONSTRAINT
+#define TARGET_MEM_CONSTRAINT 'm'
+#endif
+
 #ifndef REVERSIBLE_CC_MODE
 #define REVERSIBLE_CC_MODE(MODE) 0
 #endif
@@ -940,4 +920,28 @@ along with GCC; see the file COPYING3.  If not see
 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
 #endif
 
+/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
+   the backend.  MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
+   effort stack alignment supported by the backend.  If the backend
+   supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
+   MAX_STACK_ALIGNMENT are the same.  Otherwise, the incoming stack
+   boundary will limit the maximum guaranteed stack alignment.  */
+#ifdef MAX_STACK_ALIGNMENT
+#define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
+#else
+#define MAX_STACK_ALIGNMENT STACK_BOUNDARY
+#define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
+#endif
+
+#define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
+
+#ifndef LOCAL_ALIGNMENT
+#define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
+#endif
+
+#ifndef STACK_SLOT_ALIGNMENT
+#define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
+  ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
+#endif
+
 #endif  /* ! GCC_DEFAULTS_H */