Fix prefetch: use ldb instead of prefetch (ld) instruction

Author: Claudiu Zissulescu

gcc/ChangeLog.ARC

@@ -1,3 +1,11 @@
+2013-03-26 Claudiu Zissulescu <[email protected]>
+
+	* config/arc/arc.md: Use ldb 0,[xxx] operation, instead of the
+          prefetch (which is ld 0,[xxx]) asm macro. Hence, we avoid
+          having missaligned exceptions when using prefetch
+          instructions.
+	* doc/install.texi: Typo fix.
+
 2013-03-17 Claudiu Zissulescu <[email protected]>
 
 	* config/arc/arc.md: Update how multiplication is done for ARC 600.

gcc/config/arc/arc.md

@@ -5479,7 +5479,7 @@
 	     (match_operand:SI 1 "" "")
 	     (match_operand:SI 2 "" ""))]
   "TARGET_V2"
-  "prefetch [%0]"
+  "ldb 0,[%0]"
   [(set_attr "type" "load")
    (set_attr "length" "4")])
 
@@ -5489,7 +5489,7 @@
 	     (match_operand:SI 2 "" "")
 	     (match_operand:SI 3 "" ""))]
   "TARGET_V2"
-  "prefetch [%0,%1]"
+  "ldb 0,[%0,%1]"
   [(set_attr "type" "load")
    (set_attr "length" "4,4,8")])
 
@@ -5498,7 +5498,7 @@
 	     (match_operand:SI 1 "" "")
 	     (match_operand:SI 2 "" ""))]
   "TARGET_V2"
-  "prefetch [%0]"
+  "ldb 0,[%0]"
   [(set_attr "type" "load")
    (set_attr "length" "8")])
 

gcc/doc/invoke.texi

@@ -11374,7 +11374,7 @@ The multiply option is set to accept short vector extensions, and
 double MAC operations. The following instructions are additionaly
 enabled: MPYD, MPYDU, MACD, MACDU, VMPY2H, and VMPY2HU.
 
-@item 8
+@item 9
 @itemx 64 bit
 The multiply option is set to accept 64 bit operations. The following
 instructions are additionaly enabled: QMPYH, QMPYHU, DMPYWH, DMPYWHU,