[PATCH, AArch64] Define __ARM_NEON by default

[Ian Bolton]

Hi,

This is needed for when people are porting their aarch32 code to aarch64.
They will have #ifdef __ARM_NEON (as specified in ACLE) and their intrinsics
currently won't get used on aarch64 because it's not defined there by
default.

This patch defines __ARM_NEON so long as we are not using general regs only.

Tested on simple testcase to ensure __ARM_NEON was defined.

OK for trunk?

Cheers,
Ian


2014-02-24  Ian Bolton  <ian.bol...@arm.com>

        * config/aarch64/aarch64.h: Define __ARM_NEON by default if we are
        not using general regs only.
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 13c424c..fc21981 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -32,6 +32,9 @@
       else                                             \
        builtin_define ("__AARCH64EL__");               \
                                                        \
+      if (!TARGET_GENERAL_REGS_ONLY)                   \
+       builtin_define ("__ARM_NEON");                  \
+                                                       \
       switch (aarch64_cmodel)                          \
        {                                               \
          case AARCH64_CMODEL_TINY:                     \