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Patch to create builtin bcmp
- To: egcs-patches at egcs dot cygnus dot com
- Subject: Patch to create builtin bcmp
- From: "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
- Date: Wed, 22 Mar 2000 11:38:49 -0500 (EST)
This patch creates a new builtin bcmp. It operates by simply
calling builtin memcmp. This patch depends on
http://gcc.gnu.org/ml/gcc-patches/2000-03/msg00747.html
Bootstrapped on i686-pc-linux-gnu and sparc-sun-solaris2.7, no regressions.
Okay to install?
--Kaveh
2000-03-21 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* builtins.c (expand_builtin): Handle bcmp.
* builtins.def: Add BUILT_IN_BCMP.
* c-common.c (c_common_nodes_and_builtins): Provide builtin
prototype & function for bcmp.
diff -rup orig/egcs-CVS20000321/gcc/builtins.c egcs-CVS20000321/gcc/builtins.c
--- orig/egcs-CVS20000321/gcc/builtins.c Tue Mar 21 22:40:20 2000
+++ egcs-CVS20000321/gcc/builtins.c Tue Mar 21 22:41:59 2000
@@ -2429,7 +2429,7 @@ expand_builtin (exp, target, subtarget,
&& (fcode == BUILT_IN_SIN || fcode == BUILT_IN_COS
|| fcode == BUILT_IN_FSQRT || fcode == BUILT_IN_MEMSET
|| fcode == BUILT_IN_MEMCPY || fcode == BUILT_IN_MEMCMP
- || fcode == BUILT_IN_BZERO
+ || fcode == BUILT_IN_BZERO || fcode == BUILT_IN_BCMP
|| fcode == BUILT_IN_STRLEN || fcode == BUILT_IN_STRCPY
|| fcode == BUILT_IN_STRCMP || fcode == BUILT_IN_STRNCMP
|| fcode == BUILT_IN_FFS))
@@ -2590,6 +2590,7 @@ expand_builtin (exp, target, subtarget,
return target;
break;
+ case BUILT_IN_BCMP:
case BUILT_IN_MEMCMP:
target = expand_builtin_memcmp (exp, arglist, target);
if (target)
@@ -2598,6 +2599,7 @@ expand_builtin (exp, target, subtarget,
#else
case BUILT_IN_STRCMP:
case BUILT_IN_STRNCMP:
+ case BUILT_IN_BCMP:
case BUILT_IN_MEMCMP:
break;
#endif
diff -rup orig/egcs-CVS20000321/gcc/builtins.def egcs-CVS20000321/gcc/builtins.def
--- orig/egcs-CVS20000321/gcc/builtins.def Tue Mar 21 22:40:20 2000
+++ egcs-CVS20000321/gcc/builtins.def Tue Mar 21 22:40:47 2000
@@ -34,6 +34,7 @@ DEF_BUILTIN(BUILT_IN_MEMCPY)
DEF_BUILTIN(BUILT_IN_MEMCMP)
DEF_BUILTIN(BUILT_IN_MEMSET)
DEF_BUILTIN(BUILT_IN_BZERO)
+DEF_BUILTIN(BUILT_IN_BCMP)
DEF_BUILTIN(BUILT_IN_STRCPY)
DEF_BUILTIN(BUILT_IN_STRCMP)
DEF_BUILTIN(BUILT_IN_STRNCMP)
diff -rup orig/egcs-CVS20000321/gcc/c-common.c egcs-CVS20000321/gcc/c-common.c
--- orig/egcs-CVS20000321/gcc/c-common.c Tue Mar 21 22:40:20 2000
+++ egcs-CVS20000321/gcc/c-common.c Tue Mar 21 22:54:30 2000
@@ -3464,11 +3464,11 @@ c_common_nodes_and_builtins (cplus_mode,
{
tree temp;
tree memcpy_ftype, memset_ftype, strlen_ftype;
- tree strncmp_ftype, bzero_ftype;
+ tree strncmp_ftype, bzero_ftype, bcmp_ftype;
tree endlink, int_endlink, double_endlink, unsigned_endlink;
tree sizetype_endlink;
tree ptr_ftype, ptr_ftype_unsigned;
- tree void_ftype_any, void_ftype_int;
+ tree void_ftype_any, void_ftype_int, int_ftype_any;
tree double_ftype_double, double_ftype_double_double;
tree float_ftype_float, ldouble_ftype_ldouble;
tree int_ftype_cptr_cptr_sizet;
@@ -3476,6 +3476,8 @@ c_common_nodes_and_builtins (cplus_mode,
tree long_ftype_long;
/* Either char* or void*. */
tree traditional_ptr_type_node;
+ /* Either const char* or const void*. */
+ tree traditional_cptr_type_node;
tree traditional_len_type_node;
tree traditional_len_endlink;
tree va_list_ptr_type_node;
@@ -3508,6 +3510,7 @@ c_common_nodes_and_builtins (cplus_mode,
/* We realloc here because sizetype could be int or unsigned. S'ok. */
ptr_ftype_sizetype = build_function_type (ptr_type_node, sizetype_endlink);
+ int_ftype_any = build_function_type (integer_type_node, NULL_TREE);
void_ftype_any = build_function_type (void_type_node, NULL_TREE);
void_ftype = build_function_type (void_type_node, endlink);
void_ftype_int = build_function_type (void_type_node, int_endlink);
@@ -3585,6 +3588,9 @@ c_common_nodes_and_builtins (cplus_mode,
traditional_ptr_type_node = (flag_traditional && ! cplus_mode
? string_type_node : ptr_type_node);
+ traditional_cptr_type_node = (flag_traditional && ! cplus_mode
+ ? const_string_type_node : const_ptr_type_node);
+
/* Prototype for memcpy. */
memcpy_ftype
@@ -3608,6 +3614,14 @@ c_common_nodes_and_builtins (cplus_mode,
tree_cons (NULL_TREE, traditional_ptr_type_node,
traditional_len_endlink));
+ /* Prototype for bcmp. */
+ bcmp_ftype
+ = build_function_type (integer_type_node,
+ tree_cons (NULL_TREE, traditional_cptr_type_node,
+ tree_cons (NULL_TREE,
+ traditional_cptr_type_node,
+ traditional_len_endlink)));
+
builtin_function ("__builtin_constant_p", default_function_type,
BUILT_IN_CONSTANT_P, BUILT_IN_NORMAL, NULL_PTR);
@@ -3623,6 +3637,8 @@ c_common_nodes_and_builtins (cplus_mode,
BUILT_IN_NORMAL, NULL_PTR);
builtin_function ("__builtin_bzero", bzero_ftype, BUILT_IN_BZERO,
BUILT_IN_NORMAL, "bzero");
+ builtin_function ("__builtin_bcmp", bcmp_ftype, BUILT_IN_BCMP,
+ BUILT_IN_NORMAL, "bcmp");
/* Define alloca, ffs as builtins.
Declare _exit just to mark it as volatile. */
if (! no_builtins && ! no_nonansi_builtins)
@@ -3648,6 +3664,10 @@ c_common_nodes_and_builtins (cplus_mode,
temp = builtin_function ("bzero",
cplus_mode ? bzero_ftype : void_ftype_any,
BUILT_IN_BZERO, BUILT_IN_NORMAL, NULL_PTR);
+ DECL_BUILT_IN_NONANSI (temp) = 1;
+ temp = builtin_function ("bcmp",
+ cplus_mode ? bcmp_ftype : int_ftype_any,
+ BUILT_IN_BCMP, BUILT_IN_NORMAL, NULL_PTR);
DECL_BUILT_IN_NONANSI (temp) = 1;
}