--- gcc/config/tahoe/tahoe.h	2018/04/24 18:10:25	1.1
+++ gcc/config/tahoe/tahoe.h	2018/04/24 18:22:20	1.1.1.3
@@ -1,5 +1,5 @@
 /* Definitions of target machine for GNU compiler.  Tahoe version.
-   Copyright (C) 1989 Free Software Foundation, Inc.
+   Copyright (C) 1989, 1993, 1994 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -25,9 +25,7 @@ the Free Software Foundation, 675 Mass A
  *
  * HCX/UX version by Piet van Oostrum (piet@cs.ruu.nl)
  *
- * Performance hacking by Michael Tiemann (tiemann@lurch.stanford.edu)
- *
- * Mail bugs reports or fixes to:	gcc@cs.buffalo.edu
+ * Performance hacking by Michael Tiemann (tiemann@cygnus.com)
  */
 
 /* define this for the HCX/UX version */
@@ -44,7 +42,7 @@ the Free Software Foundation, 675 Mass A
 #define TARGET_VERSION printf (" (hcx)");
 #else
 /* we want "tahoe" and "unix" defined for all future compilations */
-#define CPP_PREDEFINES "-Dtahoe -Dunix"
+#define CPP_PREDEFINES "-Dtahoe -Dunix -Asystem(unix) -Acpu(tahoe) -Amachine(tahoe)"
 /* have cc1 print that this is the tahoe version */
 #define TARGET_VERSION printf (" (tahoe)");
 #endif
@@ -137,21 +135,19 @@ extern int target_flags;
 /* this section is borrowed from the vax version since the */
 /* formats are the same in both of the architectures	   */
 
-#define CHECK_FLOAT_VALUE(mode, d) \
-  if ((mode) == SFmode) \
-    { \
-      if ((d) > 1.7014117331926443e+38) \
-	{ error ("magnitude of constant too large for `float'"); \
-	  (d) = 1.7014117331926443e+38; } \
-      else if ((d) < -1.7014117331926443e+38) \
-	{ error ("magnitude of constant too large for `float'"); \
-	  (d) = -1.7014117331926443e+38; } \
-      else if (((d) > 0) && ((d) < 2.9387358770557188e-39)) \
-	{ warning ("`float' constant truncated to zero"); \
-	  (d) = 0.0; } \
-      else if (((d) < 0) && ((d) > -2.9387358770557188e-39)) \
-	{ warning ("`float' constant truncated to zero"); \
-	  (d) = 0.0; } \
+#define CHECK_FLOAT_VALUE(MODE, D, OVEFLOW) \
+  if (OVERFLOW)								\
+    (D) = 1.7014117331926443e+38;					\
+  else if ((MODE) == SFmode)						\
+    {									\
+      if ((D) > 1.7014117331926443e+38)					\
+	(OVERFLOW) = 1, (D) = 1.7014117331926443e+38;			\
+      else if ((D) < -1.7014117331926443e+38)				\
+	(OVERFLOW) = 1, (D) = -1.7014117331926443e+38;			\
+      else if (((D) > 0) && ((D) < 2.9387358770557188e-39))		\
+	(OVERFLOW) = 1, (D) = 0.0;					\
+      else if (((D) < 0) && ((D) > -2.9387358770557188e-39))		\
+	(OVERFLOW) = 1, (D) = 0.0;					\
     }
 
 
@@ -621,7 +617,7 @@ enum reg_class {NO_REGS,GENERAL_REGS,FPP
 /* any bits higher than the low 4 are ignored in the shift count */
 /* so don't bother zero extending or sign extending them         */
 
-#define SHIFT_COUNT_TRUNCATED
+#define SHIFT_COUNT_TRUNCATED 1
 
 /* we don't need to officially convert from one fixed type to another */
 /* in order to use it as that type. We can just assume it's the same  */
@@ -860,7 +856,7 @@ enum reg_class {NO_REGS,GENERAL_REGS,FPP
 /* This is how to output an assembler line for an ASCII string.  */
 
 #define ASM_OUTPUT_ASCII(FILE, p, size)  		\
-{	register int i;					\
+do {	register int i;					\
 	  fprintf ((FILE), "\t.ascii \""); 		\
 	  for (i = 0; i < (size); i++) 			\
 	    {						\
@@ -874,7 +870,7 @@ enum reg_class {NO_REGS,GENERAL_REGS,FPP
 		  fprintf ((FILE), "\\%03o", c);	\
 		}					\
 	    }						\
-	  fprintf ((FILE), "\"\n"); }
+	  fprintf ((FILE), "\"\n"); } while (0)
 #endif
 
 /* This is how to output an assembler line for a numeric constant byte.  */