[arm] Use -march=armv7-a+fp when testing hard-float

Some tests explicitly test with -march=armv7-a and -mfloat-abi=hard.
However, with the new -mfpu=auto code, this architectural specifiction
lacks any floating-point capabilities.  To rectify this, change the
architecture to armv7-a+fp.

gcc/testsuite:

	* gcc.dg/pr59418.c: On ARM, change architecture to armv7-a+fp.
	* gcc.target/arm/pr51915.c: Likewise.
	* gcc.target/arm/pr52006.c: Likewise.
	* gcc.target/arm/pr53187.c: Likewise.

From-SVN: r249299

gcc/testsuite/ChangeLog

+2017-06-16  Richard Earnshaw  <rearnsha@arm.com>
+
+	* gcc.dg/pr59418.c: On ARM, change architecture to armv7-a+fp.
+	* gcc.target/arm/pr51915.c: Likewise.
+	* gcc.target/arm/pr52006.c: Likewise.
+	* gcc.target/arm/pr53187.c: Likewise.
+
 2017-06-16  Richard Earnshaw  <rearnsha@arm.com>
 
 	* gcc.target/arm/multilibs.exp: New file.

gcc/testsuite/gcc.dg/pr59418.c

@@ -3,7 +3,7 @@
 
 /* { dg-do compile } */
 /* { dg-options "-Os -g" } */
-/* { dg-options "-march=armv7-a -mfloat-abi=hard -Os -g" { target { arm*-*-* && { ! arm_thumb1 } } } } */
+/* { dg-options "-march=armv7-a+fp -mfloat-abi=hard -Os -g" { target { arm*-*-* && { ! arm_thumb1 } } } } */
 
 extern int printf (const char *__format, ...);
 double bar (const char *, int);

gcc/testsuite/gcc.target/arm/pr51915.c

@@ -2,7 +2,7 @@
 /* { dg-do compile } */
 /* { dg-skip-if "no support for hard-float VFP ABI" { arm_thumb1 } { "-march=*" } { "" } } */
 /* { dg-skip-if "do not override -mfloat-abi" { *-*-* } { "-mfloat-abi=*" } { "-mfloat-abi=hard" } } */
-/* { dg-options "-march=armv7-a -mfloat-abi=hard -O2" } */
+/* { dg-options "-march=armv7-a+fp -mfloat-abi=hard -O2" } */
 
 struct S { int s1; void *s2; };
 struct T { struct S t1; unsigned long long t2; };

gcc/testsuite/gcc.target/arm/pr52006.c

@@ -2,7 +2,7 @@
 /* { dg-do compile } */
 /* { dg-skip-if "avoid conflicts with multilib flags" { *-*-* } { "-mfloat-abi=*" } { "-mfloat-abi=hard" } } */
 /* { dg-skip-if "no support for hard-float VFP ABI" { arm_thumb1 } { "-march=*" } { "" } } */
-/* { dg-options "-march=armv7-a -mfloat-abi=hard -O2 -fPIC" } */
+/* { dg-options "-march=armv7-a+fp -mfloat-abi=hard -O2 -fPIC" } */
 
 unsigned long a;
 static int b;

gcc/testsuite/gcc.target/arm/pr53187.c

@@ -2,7 +2,7 @@
 /* { dg-do compile } */
 /* { dg-skip-if "no support for hard-float VFP ABI" { arm_thumb1 } { "-march=*" } { "" } } */
 /* { dg-skip-if "do not override -mfloat-abi" { *-*-* } { "-mfloat-abi=*" } { "-mfloat-abi=hard" } } */
-/* { dg-options "-march=armv7-a -mfloat-abi=hard -O2" } */
+/* { dg-options "-march=armv7-a+fp -mfloat-abi=hard -O2" } */
 
 void bar (int);