Reverted writes_to_pc() back to old version of code until PC operands are

supported by cgen.

gas/ChangeLog

@@ -5,14 +5,15 @@ Fri Feb 13 16:41:42 1998  Ian Lance Taylor  <ian@cygnus.com>
 	* doc/Makefile.am (AUTOMAKE_OPTIONS): Define.
 	* doc/Makefile.in: Rebuild.
 
+start-sanitize-m32rx
 Fri Feb 13 09:57:11 1998  Nick Clifton  <nickc@cygnus.com>
 
 	* config/tc-m32r.c (first_writes_to_seconds_operands): New
 	function.  Replaces get_src_reg(), check_for_side_effects(),
 	reads_from_src_reg().  Uses new insn operand features of cgen.
-	(writes_to_pc): New function.
+	(writes_to_pc): New function., but with new code suppressed for now.
 	(md_assemble): Call first_writes_to_seconds_operands().
-
+end-sanitize-m32rx
 Fri Feb 13 00:47:44 1998  Ian Lance Taylor  <ian@cygnus.com>
 
 	* config/tc-mips.c (macro_build): Handle operand type 'C'.

gas/config/tc-m32r.c

@@ -432,6 +432,7 @@ static int
 writes_to_pc (a)
      m32r_insn * a;
 {
+#if 0
   const CGEN_OPERAND_INSTANCE * a_operands;
 
   for (a_operands = CGEN_INSN_OPERANDS (a->insn);
@@ -442,7 +443,11 @@ writes_to_pc (a)
 	  && CGEN_OPERAND_INDEX (CGEN_OPERAND_INSTANCE_OPERAND (a_operands)) == M32R_OPERAND_PC)
 	return 1;
     }
-
+#else
+  if (CGEN_INSN_ATTR (a->insn, CGEN_INSN_UNCOND_CTI)
+      || CGEN_INSN_ATTR (a->insn, CGEN_INSN_COND_CTI))
+    return 1;
+#endif
   return 0;
 }
 

gas/doc/c-m32r.texi

@@ -70,7 +70,7 @@ There are several warning and error messages that can be produced by
 
 @table @code
 
-@item output of first instruction is the same as the input of second instruction - is this intentional ?
+@item output of 1st instruction is the same as an input to 2nd instruction - is this intentional ?
 This message is only produced if warnings for explicit parallel
 conflicts have been enabled.  It indicates that the assembler has
 encountered a parallel instruction in which the destination register of
@@ -79,7 +79,7 @@ instruction.  For example in this code fragment
 @samp{mv r1, r2 || neg r3, r1} register r1 is the destination of the
 move instruction and the input to the neg instruction.
 
-@item output of second instruction is the same as the input of first instruction - is this intentional ?
+@item output of 2nd instruction is the same as an input to 1st instruction - is this intentional ?
 This message is only produced if warnings for explicit parallel
 conflicts have been enabled.  It indicates that the assembler has
 encountered a parallel instruction in which the destination register of
@@ -109,31 +109,14 @@ executed in parallel.
 This message is produced when the assembler encounters a parallel
 instruction whoes components both use the same execution pipeline.
 
-@item Both instructions write to the link register
-This message is produced when the assembler encounters a parallel
-instruction whoes components both write to the link register, one of
-them as a side effect.  For example this code fragment will produce this
-message:  @samp{jl r0 || mv r14, r1}
-
-@item Destination of first instruction written to by side effect of second instruction.
-This message is produced when the assembler encounters a parallel
-instruction whoes right hand component has a side effect which modifes a
-register used as the destination by the left hand component.  For
-example this code fragment will produce this message:
-@samp{mv r1, r2 || ld r0, @@r1+} 
-
-@item Destination of second instruction written to by side effect of first instruction.
-This message is produced when the assembler encounters a parallel
-instruction whoes left hand component has a side effect which modifes a
-register used as the destination by the right hand component.  For
-example this code fragment will produce this message:
-@samp{st r2, @@-r1 || mv r1, r3} 
-
 @item Instructions write to the same destination register.
 This message is produced when the assembler encounters a parallel
 instruction where both components attempt to modify the same register.
-For example this code fragment will produce this message:
+For example these code fragments will produce this message:
 @samp{mv r1, r2 || neg r1, r3}
+@samp{jl r0 || mv r14, r1}
+@samp{st r2, @@-r1 || mv r1, r3} 
+@samp{mv r1, r2 || ld r0, @@r1+} 
 
 @end table
 @c end-sanitize-m32rx