re PR target/89093 (C++ exception handling clobbers d8 VFP register)

	PR target/89093
	* config/arm/arm.c (arm_valid_target_attribute_rec): Use strcmp
	instead of strncmp when checking for thumb and arm.  Formatting fixes.

	* gcc.target/arm/pr89093.c: New test.

From-SVN: r270339

gcc/ChangeLog

+2019-04-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/89093
+	* config/arm/arm.c (arm_valid_target_attribute_rec): Use strcmp
+	instead of strncmp when checking for thumb and arm.  Formatting fixes.
+
 2019-04-12  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	* doc/install.texi: Document --with-target-system-zlib.

gcc/config/arm/arm.c

@@ -30874,16 +30874,16 @@ arm_valid_target_attribute_rec (tree args, struct gcc_options *opts)
       while (ISSPACE (*q)) ++q;
 
       argstr = NULL;
-      if (!strncmp (q, "thumb", 5))
-	  opts->x_target_flags |= MASK_THUMB;
+      if (!strcmp (q, "thumb"))
+	opts->x_target_flags |= MASK_THUMB;
 
-      else if (!strncmp (q, "arm", 3))
-	  opts->x_target_flags &= ~MASK_THUMB;
+      else if (!strcmp (q, "arm"))
+	opts->x_target_flags &= ~MASK_THUMB;
 
       else if (!strncmp (q, "fpu=", 4))
 	{
 	  int fpu_index;
-	  if (! opt_enum_arg_to_value (OPT_mfpu_, q+4,
+	  if (! opt_enum_arg_to_value (OPT_mfpu_, q + 4,
 				       &fpu_index, CL_TARGET))
 	    {
 	      error ("invalid fpu for target attribute or pragma %qs", q);
@@ -30901,7 +30901,7 @@ arm_valid_target_attribute_rec (tree args, struct gcc_options *opts)
 	}
       else if (!strncmp (q, "arch=", 5))
 	{
-	  char* arch = q+5;
+	  char *arch = q + 5;
 	  const arch_option *arm_selected_arch
 	     = arm_parse_arch_option_name (all_architectures, "arch", arch);
 

gcc/testsuite/ChangeLog

+2019-04-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/89093
+	* gcc.target/arm/pr89093.c: New test.
+
 2019-04-12  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/89933

gcc/testsuite/gcc.target/arm/pr89093.c

+/* PR target/89093 */
+/* { dg-do compile } */
+
+__attribute__((target ("arm.foobar"))) void f1 (void) {} /* { dg-error "unknown target attribute or pragma 'arm.foobar'" } */
+__attribute__((target ("thumbozoo1"))) void f2 (void) {} /* { dg-error "unknown target attribute or pragma 'thumbozoo1'" } */
+__attribute__((target ("arm,thumbique"))) void f3 (void) {} /* { dg-error "unknown target attribute or pragma 'thumbique'" } */
+__attribute__((target ("thumb981,arm"))) void f4 (void) {} /* { dg-error "unknown target attribute or pragma 'thumb981'" } */