alpha.c (alpha_legitimate_address_p): Explicit relocations of local symbols wider than UNITS_PER_WORD are not valid.

	* config/alpha/alpha.c (alpha_legitimate_address_p): Explicit
	relocations of local symbols  wider than UNITS_PER_WORD are not valid.
	(alpha_legitimize_address): Do not split local symbols wider than
	UNITS_PER_WORD into HIGH/LO_SUM parts.

testsuite/ChangeLog:

	Revert:
	2009-01-05  Uros Bizjak  <ubizjak@gmail.com>

	* gcc.dg/compat/struct-layout-1_generate.c (dg-options): Add -mieee
	for alpha*-*-* targets.
	* g++.dg/compat/struct-layout-1_generate.c (dg-options): Ditto.

From-SVN: r143332

5 files changed, 35 insertions, 18 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6e4aa8e..84354df 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2009-01-13  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/alpha/alpha.c (alpha_legitimate_address_p): Explicit
+	relocations of local symbols  wider than UNITS_PER_WORD are not valid.
+	(alpha_legitimize_address): Do not split local symbols wider than
+	UNITS_PER_WORD into HIGH/LO_SUM parts.
+
 2009-01-13  Danny Smith  <dannysmith@users.sourceforge.net>
 
 	PR bootstrap/38580
@@ -32,9 +39,9 @@
 2009-01-12  Tomas Bily  <tbily@suse.cz>
 
 	PR middlend/38385
-        * tree-loop-distribution.c (prop_phis): New function.
-        (generate_builtin): Call prop_phis.
-        * testsuite/gcc.dg/tree-ssa/pr38385.c: New file.
+	* tree-loop-distribution.c (prop_phis): New function.
+	(generate_builtin): Call prop_phis.
+	* testsuite/gcc.dg/tree-ssa/pr38385.c: New file.
 
 2009-01-12  Jakub Jelinek  <jakub@redhat.com>
 
@@ -85,8 +92,7 @@
 2008-01-09  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR rtl-optimization/38495
-	* ira-emit.c (print_move_list, ira_debug_move_list): New
-	functions.
+	* ira-emit.c (print_move_list, ira_debug_move_list): New functions.
 	(add_range_and_copies_from_move_list): Print all added ranges.
 	Add ranges to memory optimized destination.
 
@@ -111,8 +117,7 @@
 	epilogue_size_needed to the epilogue expanders.
 
 	PR c/35742
-	* c-pretty-print.c (pp_c_expression): Handle GOTO_EXPR like
-	BIND_EXPR.
+	* c-pretty-print.c (pp_c_expression): Handle GOTO_EXPR like BIND_EXPR.
 
 2009-01-09  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c
index 9c79f88..7bafb0a 100644
--- a/gcc/config/alpha/alpha.c
+++ b/gcc/config/alpha/alpha.c
@@ -864,9 +864,11 @@ alpha_legitimate_address_p (enum machine_mode mode, rtx x, int strict)
 	}
     }
 
-  /* If we're managing explicit relocations, LO_SUM is valid, as
-     are small data symbols.  */
-  else if (TARGET_EXPLICIT_RELOCS)
+  /* If we're managing explicit relocations, LO_SUM is valid, as are small
+     data symbols.  Avoid explicit relocations of modes larger than word
+     mode since i.e. $LC0+8($1) can fold around +/- 32k offset.  */
+  else if (TARGET_EXPLICIT_RELOCS
+	   && GET_MODE_SIZE (mode) <= UNITS_PER_WORD)
     {
       if (small_symbolic_operand (x, Pmode))
 	return true;
@@ -916,8 +918,7 @@ get_tls_get_addr (void)
    to be legitimate.  If we find one, return the new, valid address.  */
 
 rtx
-alpha_legitimize_address (rtx x, rtx scratch,
-			  enum machine_mode mode ATTRIBUTE_UNUSED)
+alpha_legitimize_address (rtx x, rtx scratch, enum machine_mode mode)
 {
   HOST_WIDE_INT addend;
 
@@ -965,8 +966,12 @@ alpha_legitimize_address (rtx x, rtx scratch,
       goto split_addend;
     }
 
-  /* If this is a local symbol, split the address into HIGH/LO_SUM parts.  */
-  if (TARGET_EXPLICIT_RELOCS && symbolic_operand (x, Pmode))
+  /* If this is a local symbol, split the address into HIGH/LO_SUM parts.
+     Avoid modes larger than word mode since i.e. $LC0+8($1) can fold
+     around +/- 32k offset.  */
+  if (TARGET_EXPLICIT_RELOCS
+      && GET_MODE_SIZE (mode) <= UNITS_PER_WORD
+      && symbolic_operand (x, Pmode))
     {
       rtx r0, r16, eqv, tga, tp, insn, dest, seq;
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a34e95f..a59c294 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2009-01-13  Uros Bizjak  <ubizjak@gmail.com>
+
+	Revert:
+	2009-01-05  Uros Bizjak  <ubizjak@gmail.com>
+
+	* gcc.dg/compat/struct-layout-1_generate.c (dg-options): Add -mieee
+	for alpha*-*-* targets.
+	* g++.dg/compat/struct-layout-1_generate.c (dg-options): Ditto.
+
 2009-01-12  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR libfortran/38772
diff --git a/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c b/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c
index b314d70..575ad61 100644
--- a/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c
+++ b/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c
@@ -48,8 +48,7 @@ const char *dg_options[] = {
 "/* { dg-options \"%s-I%s -fno-common\" { target hppa*-*-hpux* powerpc*-*-darwin* *-*-mingw32* *-*-cygwin* } } */\n",
 "/* { dg-options \"%s-I%s -mno-mmx -fno-common\" { target i?86-*-darwin* x86_64-*-darwin* } } */\n",
 "/* { dg-options \"%s-I%s -mno-base-addresses\" { target mmix-*-* } } */\n",
-"/* { dg-options \"%s-I%s -mlongcalls -mtext-section-literals\" { target xtensa*-*-* } } */\n",
-"/* { dg-options \"%s-I%s -mieee\" { target alpha*-*-* } } */\n"
+"/* { dg-options \"%s-I%s -mlongcalls -mtext-section-literals\" { target xtensa*-*-* } } */\n"
 #define NDG_OPTIONS (sizeof (dg_options) / sizeof (dg_options[0]))
 };
 
diff --git a/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c b/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c
index 26e6572..a162dee 100644
--- a/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c
+++ b/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c
@@ -48,8 +48,7 @@ const char *dg_options[] = {
 "/* { dg-options \"%s-I%s -fno-common\" { target hppa*-*-hpux* powerpc*-*-darwin* *-*-mingw32* *-*-cygwin* } } */\n",
 "/* { dg-options \"%s-I%s -mno-mmx -fno-common\" { target i?86-*-darwin* x86_64-*-darwin* } } */\n",
 "/* { dg-options \"%s-I%s -mno-base-addresses\" { target mmix-*-* } } */\n",
-"/* { dg-options \"%s-I%s -mlongcalls -mtext-section-literals\" { target xtensa*-*-* } } */\n",
-"/* { dg-options \"%s-I%s -mieee\" { target alpha*-*-* } } */\n"
+"/* { dg-options \"%s-I%s -mlongcalls -mtext-section-literals\" { target xtensa*-*-* } } */\n"
 #define NDG_OPTIONS (sizeof (dg_options) / sizeof (dg_options[0]))
 };