[PATCH]AArch64: Turn on GPR narrowing pass by default

[Tamar Christina]

This turns on the GPR narrowing pass for all AArch64 targets.

Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.

Any objections?

Thanks,
Tamar

gcc/ChangeLog:

        * config/aarch64/aarch64-tuning-flags.def
        (AARCH64_EXTRA_TUNE_BASE): Add AARCH64_EXTRA_TUNE_NARROW_GP_WRITES.

---
diff --git a/gcc/config/aarch64/aarch64-tuning-flags.def 
b/gcc/config/aarch64/aarch64-tuning-flags.def
index 
882daa4b4312039f96dcde1295179be3ab3da0d0..058dadecccaac458e30a6585b558581a7bef6f54
 100644
--- a/gcc/config/aarch64/aarch64-tuning-flags.def
+++ b/gcc/config/aarch64/aarch64-tuning-flags.def
@@ -67,7 +67,8 @@ AARCH64_EXTRA_TUNING_OPTION ("cheap_fpmr_write", 
CHEAP_FPMR_WRITE)
 
 /* Baseline tuning settings suitable for all modern cores.  */
 #define AARCH64_EXTRA_TUNE_BASE (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND \
-                                | AARCH64_EXTRA_TUNE_FULLY_PIPELINED_FMA)
+                                | AARCH64_EXTRA_TUNE_FULLY_PIPELINED_FMA \
+                                | AARCH64_EXTRA_TUNE_NARROW_GP_WRITES)
 
 /* Enables dispatch scheduling.  */
 AARCH64_EXTRA_TUNING_OPTION ("dispatch_sched", DISPATCH_SCHED)


-- 

diff --git a/gcc/config/aarch64/aarch64-tuning-flags.def b/gcc/config/aarch64/aarch64-tuning-flags.def
index 882daa4b4312039f96dcde1295179be3ab3da0d0..058dadecccaac458e30a6585b558581a7bef6f54 100644
--- a/gcc/config/aarch64/aarch64-tuning-flags.def
+++ b/gcc/config/aarch64/aarch64-tuning-flags.def
@@ -67,7 +67,8 @@ AARCH64_EXTRA_TUNING_OPTION ("cheap_fpmr_write", CHEAP_FPMR_WRITE)
 
 /* Baseline tuning settings suitable for all modern cores.  */
 #define AARCH64_EXTRA_TUNE_BASE (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND	\
-				 | AARCH64_EXTRA_TUNE_FULLY_PIPELINED_FMA)
+				 | AARCH64_EXTRA_TUNE_FULLY_PIPELINED_FMA \
+				 | AARCH64_EXTRA_TUNE_NARROW_GP_WRITES)
 
 /* Enables dispatch scheduling.  */
 AARCH64_EXTRA_TUNING_OPTION ("dispatch_sched", DISPATCH_SCHED)