From: Uros Bizjak <uros@gcc.gnu.org>
Date: Tue, 17 Aug 2010 12:25:24 +0000 (+0200)
Subject: re PR target/45296 (register long double ICE at -O2, -Os, -O3)
X-Git-Tag: releases/gcc-4.6.0~4969
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2c65142a27eb0e8574767fb05addc850811ea291;p=thirdparty%2Fgcc.git

re PR target/45296 (register long double ICE at -O2, -Os, -O3)

	PR target/45296
	* reginfo.c (globalize_reg): Reject stack registers.

testsuite/ChangeLog:

	PR target/45296
	* gcc.target/i386/pr45296.c: New test.

From-SVN: r163303
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 73462ffc54a6..29e5007c1622 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-17  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/45296
+	* reginfo.c (globalize_reg): Reject stack registers.
+
 2010-08-17  Richard Guenther  <rguenther@suse.de>
 
 	* tree-ssa-dom.c (struct edge_info): Use a VEC for the
@@ -24,7 +29,7 @@
 	* c-decl.c (diagnose_uninitialized_cst_member): New function.
 	(finish_decl): Use it to issue a -Wc++-compat warning about
 	uninitialized const field in struct or union.
-	
+
 	(finish_struct): Use strip_array_types.
 
 2010-08-17  Jakub Jelinek  <jakub@redhat.com>
@@ -112,8 +117,7 @@
 	(decode_options): Update call to decode_cmdline_options_to_array.
 	(print_filtered_help): Ignore driver-only options.
 	(print_specific_help): Ignore CL_DRIVER.
-	(common_handle_option): Don't call print_specific_help for
-	CL_DRIVER.
+	(common_handle_option): Don't call print_specific_help for CL_DRIVER.
 	* opts.h (CL_DRIVER, CL_REJECT_DRIVER): Define.
 	(CL_PARAMS, CL_WARNING, CL_OPTIMIZATION, CL_TARGET, CL_COMMON):
 	Update values.
diff --git a/gcc/reginfo.c b/gcc/reginfo.c
index 55d2b5b6f9d4..1510ce84ec5d 100644
--- a/gcc/reginfo.c
+++ b/gcc/reginfo.c
@@ -798,6 +798,14 @@ fix_register (const char *name, int fixed, int call_used)
 void
 globalize_reg (int i)
 {
+#ifdef STACK_REGS
+  if (IN_RANGE (i, FIRST_STACK_REG, LAST_STACK_REG))
+    {
+      error ("stack register used for global register variable");
+      return;
+    }
+#endif
+
   if (fixed_regs[i] == 0 && no_global_reg_vars)
     error ("global register variable follows a function definition");
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e36e5bf729fb..a4c99b89d5b1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-17  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/45296
+	* gcc.target/i386/pr45296.c: New test.
+
 2010-08-17  Kai Tietz  <kai.tietz@onevision.com>
 
 	* g++.dg/ext/uow-1.C: New.
diff --git a/gcc/testsuite/gcc.target/i386/pr45296.c b/gcc/testsuite/gcc.target/i386/pr45296.c
new file mode 100644
index 000000000000..307ee012aeb2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr45296.c
@@ -0,0 +1,4 @@
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+register long double F80 asm("st"); /* { dg-error "stack register" } */