From: Peter Maydell <peter.maydell@linaro.org>
Date: Thu, 18 Oct 2012 15:58:52 +0000 (+0100)
Subject: target-arm: Use TCG operation for Neon 64 bit negation
X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~3212^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ee6fa5593ebfc437cbedaf28de8b66b2e7d44e70;p=sdk%2Femulator%2Fqemu.git

target-arm: Use TCG operation for Neon 64 bit negation

Use the TCG operation to do Neon 64 bit negations rather than calling
a helper routine for it.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---

diff --git a/target-arm/helper.h b/target-arm/helper.h
index 8b9adf1..fa3472f 100644
--- a/target-arm/helper.h
+++ b/target-arm/helper.h
@@ -339,7 +339,6 @@ DEF_HELPER_2(neon_mull_s16, i64, i32, i32)
 
 DEF_HELPER_1(neon_negl_u16, i64, i64)
 DEF_HELPER_1(neon_negl_u32, i64, i64)
-DEF_HELPER_1(neon_negl_u64, i64, i64)
 
 DEF_HELPER_2(neon_qabs_s8, i32, env, i32)
 DEF_HELPER_2(neon_qabs_s16, i32, env, i32)
diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c
index 9aa920d..89280b6 100644
--- a/target-arm/neon_helper.c
+++ b/target-arm/neon_helper.c
@@ -1664,12 +1664,6 @@ uint64_t HELPER(neon_negl_u32)(uint64_t x)
     return low | ((uint64_t)high << 32);
 }
 
-/* FIXME:  There should be a native op for this.  */
-uint64_t HELPER(neon_negl_u64)(uint64_t x)
-{
-    return -x;
-}
-
 /* Saturating sign manipulation.  */
 /* ??? Make these use NEON_VOP1 */
 #define DO_QABS8(x) do { \
diff --git a/target-arm/translate.c b/target-arm/translate.c
index daccb15..d33f94c 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -4184,7 +4184,9 @@ static inline void gen_neon_negl(TCGv_i64 var, int size)
     switch (size) {
     case 0: gen_helper_neon_negl_u16(var, var); break;
     case 1: gen_helper_neon_negl_u32(var, var); break;
-    case 2: gen_helper_neon_negl_u64(var, var); break;
+    case 2:
+        tcg_gen_neg_i64(var, var);
+        break;
     default: abort();
     }
 }