[ARC] Enable DBNZ for core3 and newer CPUs.

2018-09-17  Vineet Gupta  <vgupta@synopsys.com>

	* config/arc/arc.c: Object attributes for core4 not reflected
	correctly.
	* config/arc/arc.h: Don't restrict DBNZ to core3 (core4 includes
	core3).

From-SVN: r264362

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 30796de..44700f5 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-09-17  Vineet Gupta  <vgupta@synopsys.com>
+
+       * config/arc/arc.c: Object attributes for core4 not reflected
+       correctly.
+       * config/arc/arc.h: Don't restrict DBNZ to core3 (core4 includes
+       core3).
+
 2018-09-17  Alexey Brodkin  <abrodkin@synopsys.com>
 
        * config/arc/linux.h (LINK_EH_SPEC): Add missing space.

diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index c186e02..5443cdd 100644 (file)
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -5181,7 +5181,8 @@ static void arc_file_start (void)
               TARGET_OPTFPE ? 1 : 0);
   if (TARGET_V2)
     asm_fprintf (asm_out_file, "\t.arc_attribute Tag_ARC_CPU_variation, %d\n",
-                arc_tune == ARC_TUNE_CORE_3 ? 3 : 2);
+                (arc_tune < ARC_TUNE_CORE_3) ? 2 :
+                (arc_tune == ARC_TUNE_CORE_3 ? 3 : 4));
 }
 
 /* Implement `TARGET_ASM_FILE_END'.  */

diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h
index de09b6b..98fa928 100644 (file)
--- a/gcc/config/arc/arc.h
+++ b/gcc/config/arc/arc.h
@@ -1635,7 +1635,7 @@ enum
 /* Custom FP instructions used by QuarkSE EM cpu.  */
 #define TARGET_FPX_QUARK    (TARGET_EM && TARGET_SPFP          \
                             && (arc_fpu_build == FPX_QK))
-/* DBNZ support is available for ARCv2 core3 cpus.  */
-#define TARGET_DBNZ (TARGET_V2 && (arc_tune == ARC_TUNE_CORE_3))
+/* DBNZ support is available for ARCv2 core3 and newer cpus.  */
+#define TARGET_DBNZ (TARGET_V2 && (arc_tune >= ARC_TUNE_CORE_3))
 
 #endif /* GCC_ARC_H */