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

	PR target/89093
	* config/arm/arm.c (arm_valid_target_attribute_rec): Don't skip
	whitespace at the start of target attribute string.

	* gcc.target/arm/pr89093-2.c: New test.

From-SVN: r270404

gcc/ChangeLog

+2019-04-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/89093
+	* config/arm/arm.c (arm_valid_target_attribute_rec): Don't skip
+	whitespace at the start of target attribute string.
+
 2019-04-16  Pat Haugen  <pthaugen@us.ibm.com>
 
 	PR target/84369

gcc/config/arm/arm.c

@@ -30871,8 +30871,6 @@ arm_valid_target_attribute_rec (tree args, struct gcc_options *opts)
 
   while ((q = strtok (argstr, ",")) != NULL)
     {
-      while (ISSPACE (*q)) ++q;
-
       argstr = NULL;
       if (!strcmp (q, "thumb"))
 	opts->x_target_flags |= MASK_THUMB;

gcc/testsuite/ChangeLog

+2019-04-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/89093
+	* gcc.target/arm/pr89093-2.c: New test.
+
 2019-04-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/86953

gcc/testsuite/gcc.target/arm/pr89093-2.c

+/* PR target/89093 */
+/* { dg-do compile } */
+
+__attribute__((target (" arm"))) void f1 (void) {} /* { dg-error "unknown target attribute or pragma ' arm'" } */
+__attribute__((target ("   thumb"))) void f2 (void) {} /* { dg-error "unknown target attribute or pragma '   thumb'" } */
+__attribute__((target ("arm,  thumb"))) void f3 (void) {} /* { dg-error "unknown target attribute or pragma '  thumb'" } */
+__attribute__((target ("thumb,  arm"))) void f4 (void) {} /* { dg-error "unknown target attribute or pragma '  arm'" } */
+#pragma GCC target ("    arm")	/* { dg-error "unknown target attribute or pragma '    arm'" } */
+void f5 (void) {}