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[v4,3/6] target/arm: optimize rev16() using extract op

Message ID 20170512233843.27713-4-f4bug@amsat.org
State New
Headers show

Commit Message

Philippe Mathieu-Daudé May 12, 2017, 11:38 p.m. UTC 
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 <f4bug@amsat.org>
---
 target/arm/translate-a64.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
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Patch

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 24de30d92c..759b2466ef 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, 16);
     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, 16);
         tcg_gen_bswap16_i64(tcg_tmp, tcg_tmp);
         tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, 32, 16);