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[Qemu-arm] [PATCH v3 2/5] target/arm: optimize rev16() using extract op
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-arm] [PATCH v3 2/5] target/arm: optimize rev16() using extract op |
Date: |
Fri, 12 May 2017 00:35:40 -0300 |
Patch created mechanically using Coccinelle script via:
$ spatch --macro-file scripts/cocci-macro-file.h --in-place \
--sp-file scripts/coccinelle/tcg_gen_extract.cocci --dir target
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
target/arm/translate-a64.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 24de30d92c..7ea130107e 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -4038,14 +4038,12 @@ static void handle_rev16(DisasContext *s, unsigned int
sf,
tcg_gen_andi_i64(tcg_tmp, tcg_rn, 0xffff);
tcg_gen_bswap16_i64(tcg_rd, tcg_tmp);
- tcg_gen_shri_i64(tcg_tmp, tcg_rn, 16);
- tcg_gen_andi_i64(tcg_tmp, tcg_tmp, 0xffff);
+ tcg_gen_extract_i64(tcg_tmp, tcg_rn, 16, 0xffff);
tcg_gen_bswap16_i64(tcg_tmp, tcg_tmp);
tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, 16, 16);
if (sf) {
- tcg_gen_shri_i64(tcg_tmp, tcg_rn, 32);
- tcg_gen_andi_i64(tcg_tmp, tcg_tmp, 0xffff);
+ tcg_gen_extract_i64(tcg_tmp, tcg_rn, 32, 0xffff);
tcg_gen_bswap16_i64(tcg_tmp, tcg_tmp);
tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, 32, 16);
--
2.11.0