s390.opt ("mhard-float", [...]): Bit value inverted and documentation adjusted.

2007-03-19  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.opt ("mhard-float", "msoft-float"): Bit value
	inverted and documentation adjusted.
	("mhard-dfp", "msoft-dfp"): New options.
	* config/s390/s390.c (s390_handle_arch_option): New architecture
	switch: z9-ec.
	(override_options): Sanity checks for the new options added.
	* config.gcc: New architecture switch: z9-ec.
	* config/s390/s390.h (processor_flags): PF_DFP added.
	(TARGET_CPU_DFP, TARGET_DFP): Macro definitions added.
	(TARGET_DEFAULT): Due to the s390.opt changes hard float is enabled
	when the bit is NOT set so remove it from the defaults.

From-SVN: r123055

5 files changed, 54 insertions, 7 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 93c6d7e..1d4e127 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,19 @@
 2007-03-19  Andreas Krebbel  <krebbel1@de.ibm.com>
 
+	* config/s390/s390.opt ("mhard-float", "msoft-float"): Bit value
+	inverted and documentation adjusted.
+	("mhard-dfp", "msoft-dfp"): New options.
+	* config/s390/s390.c (s390_handle_arch_option): New architecture
+	switch: z9-ec.
+	(override_options): Sanity checks for the new options added.
+	* config.gcc: New architecture switch: z9-ec.
+	* config/s390/s390.h (processor_flags): PF_DFP added.
+	(TARGET_CPU_DFP, TARGET_DFP): Macro definitions added.
+	(TARGET_DEFAULT): Due to the s390.opt changes hard float is enabled
+	when the bit is NOT set so remove it from the defaults.
+
+2007-03-19  Andreas Krebbel  <krebbel1@de.ibm.com>
+
 	* genemit.c (main): Print include statement for dfp.h.
 	* dfp.h (decimal_real_arithmetic): Hide prototype if tree_code enum
 	is not available.
diff --git a/gcc/config.gcc b/gcc/config.gcc
index c8fecaa..e1c0fed 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -3023,7 +3023,7 @@ case "${target}" in
 		for which in arch tune; do
 			eval "val=\$with_$which"
 			case ${val} in
-			"" | g5 | g6 | z900 | z990 | z9-109)
+			"" | g5 | g6 | z900 | z990 | z9-109 | z9-ec)
 				# OK
 				;;
 			*)
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c
index 784b846..e72c34e 100644
--- a/gcc/config/s390/s390.c
+++ b/gcc/config/s390/s390.c
@@ -1340,6 +1340,8 @@ s390_handle_arch_option (const char *arg,
 				    | PF_LONG_DISPLACEMENT},
       {"z9-109", PROCESSOR_2094_Z9_109, PF_IEEE_FLOAT | PF_ZARCH
                                        | PF_LONG_DISPLACEMENT | PF_EXTIMM},
+      {"z9-ec", PROCESSOR_2094_Z9_109, PF_IEEE_FLOAT | PF_ZARCH
+                             | PF_LONG_DISPLACEMENT | PF_EXTIMM | PF_DFP },
     };
   size_t i;
 
@@ -1418,11 +1420,34 @@ override_options (void)
     }
 
   /* Sanity checks.  */
-  if (TARGET_ZARCH && !(s390_arch_flags & PF_ZARCH))
+  if (TARGET_ZARCH && !TARGET_CPU_ZARCH)
     error ("z/Architecture mode not supported on %s", s390_arch_string);
   if (TARGET_64BIT && !TARGET_ZARCH)
     error ("64-bit ABI not supported in ESA/390 mode");
 
+  if (TARGET_HARD_DFP && (!TARGET_CPU_DFP || !TARGET_ZARCH))
+    {
+      if (target_flags_explicit & MASK_SOFT_DFP)
+	{
+	  if (!TARGET_CPU_DFP)
+	    error ("Hardware decimal floating point instructions"
+		   " not available on %s", s390_arch_string);
+	  if (!TARGET_ZARCH)
+	    error ("Hardware decimal floating point instructions"
+		   " not available in ESA/390 mode");
+	}
+      else
+	target_flags |= MASK_SOFT_DFP;
+    }
+
+  if ((target_flags_explicit & MASK_SOFT_FLOAT) && TARGET_SOFT_FLOAT)
+    {
+      if ((target_flags_explicit & MASK_SOFT_DFP) && TARGET_HARD_DFP)
+	error ("-mhard-dfp can't be used in conjunction with -msoft-float");
+
+      target_flags |= MASK_SOFT_DFP;
+    }
+
   /* Set processor cost function.  */
   if (s390_tune == PROCESSOR_2094_Z9_109)
     s390_cost = &z9_109_cost;
diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md
index 03bec77..5f38f09 100644
--- a/gcc/config/s390/s390.md
+++ b/gcc/config/s390/s390.md
@@ -195,7 +195,7 @@
 ;; this description is also used for the g5 and g6.
 (include "2064.md")
 
-;; Pipeline description for z990. 
+;; Pipeline description for z990, z9-109 and z9-ec.
 (include "2084.md")
 
 ;; Predicates
diff --git a/gcc/config/s390/s390.opt b/gcc/config/s390/s390.opt
index 21ef4f31..cde3e29 100644
--- a/gcc/config/s390/s390.opt
+++ b/gcc/config/s390/s390.opt
@@ -47,9 +47,13 @@ mfused-madd
 Target Report Mask(FUSED_MADD)
 Enable fused multiply/add instructions
 
+mhard-dfp
+Target Report RejectNegative InverseMask(SOFT_DFP, HARD_DFP)
+Enable hardware decimal floating point
+
 mhard-float
-Target Report RejectNegative Mask(HARD_FLOAT)
-Use hardware fp
+Target Report RejectNegative InverseMask(SOFT_FLOAT, HARD_FLOAT)
+Enable hardware floating point
 
 mlong-double-128
 Target Report RejectNegative Mask(LONG_DOUBLE_128)
@@ -67,9 +71,13 @@ msmall-exec
 Target Report Mask(SMALL_EXEC)
 Use bras for executable < 64k
 
+msoft-dfp
+Target Report RejectNegative Mask(SOFT_DFP)
+Disable hardware decimal floating point
+
 msoft-float
-Target Report RejectNegative InverseMask(HARD_FLOAT, SOFT_FLOAT)
-Don't use hardware fp
+Target Report RejectNegative Mask(SOFT_FLOAT)
+Disable hardware floating point
 
 mstack-guard=
 Target RejectNegative Joined