mips.c (mips_issue_rate): Return 4 for 74K processors.

gcc/
2007-07-03  David Ung  <davidu@mips.com>

	* config/mips/mips.c (mips_issue_rate): Return 4 for 74K processors.

From-SVN: r126268

gcc/ChangeLog

 2007-07-03  David Ung  <davidu@mips.com>
+
+	* config/mips/mips.c (mips_issue_rate): Return 4 for 74K processors.
+
+2007-07-03  David Ung  <davidu@mips.com>
 	    Richard Sandiford  <richard@codesourcery.com>
 
 	* doc/invoke.texi: Document -march=74kf3_2.

gcc/config/mips/mips.c

@@ -10813,6 +10813,12 @@ mips_issue_rate (void)
     case PROCESSOR_74KF2_1:
     case PROCESSOR_74KF1_1:
     case PROCESSOR_74KF3_2:
+      /* The 74k is not strictly quad-issue cpu, but can be seen as one
+	 by the scheduler.  It can issue 1 ALU, 1 AGEN and 2 FPU insns,
+	 but in reality only a maximum of 3 insns can be issued as the
+	 floating point load/stores also require a slot in the AGEN pipe.  */
+     return 4;
+
     case PROCESSOR_R4130:
     case PROCESSOR_R5400:
     case PROCESSOR_R5500: