re PR target/22093 (Unaligned access to HI values causes unrecognizable insn error)

	PR target/22093
	* config/alpha/alpha.md (unaligned_storehi_be): Force operand
	of plus RTX into register.

testsuite/ChangeLog:

	PR target/22093
	* gcc.target/alpha/pr22093.c: New test.

From-SVN: r152322

gcc/ChangeLog

+2009-09-30  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/22093
+	* config/alpha/alpha.md (unaligned_storehi_be): Force operand
+	of plus RTX into register.
+
 2009-09-30  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* doc/install.texi: Linguistic and markup fixes.

gcc/config/alpha/alpha.md

@@ -5861,7 +5861,7 @@
 	(mem:DI (and:DI (match_operand:DI 0 "address_operand" "")
 			(const_int -8))))
    (set (match_operand:DI 2 "register_operand" "")
-	(plus:DI (match_dup 0) (const_int 1)))
+	(plus:DI (match_dup 5) (const_int 1)))
    (set (match_dup 3)
 	(and:DI (not:DI (ashift:DI
 			  (const_int 65535)
@@ -5876,7 +5876,7 @@
    (set (mem:DI (and:DI (match_dup 0) (const_int -8)))
 	(match_dup 4))]
   "WORDS_BIG_ENDIAN"
-  "")
+  "operands[5] = force_reg (DImode, operands[0]);")
 
 ;; Here are the define_expand's for QI and HI moves that use the above
 ;; patterns.  We have the normal sets, plus the ones that need scratch

gcc/testsuite/ChangeLog

+2009-09-30  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/22093
+	* gcc.target/alpha/pr22093.c: New test.
+
 2009-09-29  John Freeman  <jfreeman08@gmail.com>
 	    Jason Merrill  <jason@redhat.com>
 

gcc/testsuite/gcc.target/alpha/pr22093.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+struct shared_ptr_struct
+{
+  unsigned long phase : 48;
+  unsigned thread : 16;
+  void *addr;
+} x;
+
+void foo (void)
+{
+   x.thread = 2;
+}