gensupport.c: New file.

	* gensupport.c: New file.
	* gensupport.h: New file.
	* Makefile.in (HOST_RTL): Depend on gensupport.
	(gensupport.o) New rule.
	* genattr.c: Use gensupport for reading .md files.
	* genattrtab.c: Ditto.
	* gencodes.c: Ditto.
	* genconfig.c: Ditto.
	* genemit.c: Ditto.
	* genextract.c: Ditto.
	* genflags.c: Ditto.
	* genopinit.c: Ditto.
	* genoutput.c: Ditto.
	* genpeep.c: Ditto.
	* genrecog.c: Ditto.
	* rtl.def (define_insn_and_split): New DEF_RTL_EXPR.
	* md.texi (Insn Splitting): Document define_insn_and_split.

From-SVN: r33633

1 files changed, 27 insertions, 0 deletions

diff --git a/gcc/rtl.def b/gcc/rtl.def
index 30c5518..29cb5ee 100644
--- a/gcc/rtl.def
+++ b/gcc/rtl.def
@@ -203,6 +203,33 @@ DEF_RTL_EXPR(DEFINE_PEEPHOLE, "define_peephole", "EssV", 'x')
 	(`operands' is an alias here for `recog_operand').   */
 DEF_RTL_EXPR(DEFINE_SPLIT, "define_split", "EsES", 'x')
 
+/* Definition of an insn and associated split.
+   This is the concatenation, with a few modifications, of a define_insn
+   and a define_split which share the same pattern.
+   Operand:
+   0: names this instruction.
+      If the name is the null string, the instruction is in the
+      machine description just to be recognized, and will never be emitted by
+      the tree to rtl expander.
+   1: is the pattern.
+   2: is a string which is a C expression
+      giving an additional condition for recognizing this pattern.
+      A null string means no extra condition.
+   3: is the action to execute if this pattern is matched.
+      If this assembler code template starts with a * then it is a fragment of
+      C code to run to decide on a template to use.  Otherwise, it is the
+      template to use.
+   4: C expression that must be true for split.  This may start with "&&"
+      in which case the split condition is the logical and of the insn 
+      condition and what follows the "&&" of this operand.
+   5: vector of insn patterns to place into a SEQUENCE
+   6: optionally, some C code to execute before generating the
+	insns.  This might, for example, create some RTX's and store them in
+	elements of `recog_operand' for use by the vector of insn-patterns.
+	(`operands' is an alias here for `recog_operand').  
+   7: optionally, a vector of attributes for this insn.  */
+DEF_RTL_EXPR(DEFINE_INSN_AND_SPLIT, "define_insn_and_split", "sEsssESV", 'x')
+
 /* Definition of an RTL peephole operation.
    Follows the same arguments as define_split.  */
 DEF_RTL_EXPR(DEFINE_PEEPHOLE2, "define_peephole2", "EsES", 'x')