[PATCH][GCC][ARM] Ensure dotproduct is only enabled on armv8 neon

gcc/ChangeLog:

2018-11-30  Sam Tebbs<sam.tebbs@arm.com>

	* config/arm/arm.h (TARGET_DOTPROD): Add TARGET_VFP5 constraint.

gcc/testsuite/ChangeLog:

2018-11-30  Sam Tebbs<sam.tebbs@arm.com>

	* gcc.target/arm/neon-dotprod-restriction.c: New file.
	* lib/target-supports.exp
	(check_effective_target_arm_v8_2a_dotprod_neon_ok_nocache): Include
	stdint.h.

From-SVN: r266665

gcc/ChangeLog

+2018-11-30  Sam Tebbs  <sam.tebbs@arm.com>
+
+	* config/arm/arm.h (TARGET_DOTPROD): Add TARGET_VFP5 constraint.
+
 2018-11-30  Martin Liska  <mliska@suse.cz>
 
 	PR sanitizer/81715

gcc/config/arm/arm.h

@@ -214,7 +214,7 @@ extern tree arm_fp16_type_node;
 #define TARGET_NEON_RDMA (TARGET_NEON && arm_arch8_1)
 
 /* Supports the Dot Product AdvSIMD extensions.  */
-#define TARGET_DOTPROD (TARGET_NEON					\
+#define TARGET_DOTPROD (TARGET_NEON && TARGET_VFP5			\
 			&& bitmap_bit_p (arm_active_target.isa,		\
 					isa_bit_dotprod)		\
 			&& arm_arch8_2)

gcc/testsuite/ChangeLog

+2018-11-30  Sam Tebbs  <sam.tebbs@arm.com>
+
+	* gcc.target/arm/neon-dotprod-restriction.c: New file.
+	* lib/target-supports.exp
+	(check_effective_target_arm_v8_2a_dotprod_neon_ok_nocache): Include
+	stdint.h.
+
 2018-11-30  Martin Liska  <mliska@suse.cz>
 
 	PR sanitizer/81715
 	* c-c++-common/asan/asan-stack-small.c: New test.
 
+>>>>>>> .r266664
 2018-11-30  Richard Biener  <rguenther@suse.de>
 
 	* gcc.dg/gimplefe-34.c: New testcase.

gcc/testsuite/lib/target-supports.exp

@@ -4437,6 +4437,7 @@ proc check_effective_target_arm_v8_2a_dotprod_neon_ok_nocache { } {
     foreach flags {"" "-mfloat-abi=softfp -mfpu=neon-fp-armv8" "-mfloat-abi=hard -mfpu=neon-fp-armv8"} {
         if { [check_no_compiler_messages_nocache \
                   arm_v8_2a_dotprod_neon_ok object {
+	    #include <stdint.h>
             #if !defined (__ARM_FEATURE_DOTPROD)
             #error "__ARM_FEATURE_DOTPROD not defined"
             #endif