[Qemu-devel] [PATCH 13/14] i386: optimize setbe

[Paolo Bonzini]

This is looking at EFLAGS, but it can do so more efficiently with
setcond.

Signed-off-by: Paolo Bonzini <address@hidden>
---
 target-i386/translate.c | 7 +++----
 1 file modificato, 3 inserzioni(+), 4 rimozioni(-)

diff --git a/target-i386/translate.c b/target-i386/translate.c
index fb44839..342b9ec 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -1031,10 +1031,9 @@ static inline void gen_setcc_slow(DisasContext *s, int 
jcc_op, TCGv reg, bool in
         return;
     case JCC_BE:
         gen_compute_eflags(s);
-        tcg_gen_shri_tl(reg, cpu_cc_src, 6);
-        tcg_gen_or_tl(reg, reg, cpu_cc_src);
-        tcg_gen_andi_tl(reg, reg, 1);
-        break;
+        tcg_gen_andi_tl(reg, cpu_cc_src, 0x41);
+        tcg_gen_setcondi_tl(inv ? TCG_COND_EQ : TCG_COND_NE, reg, reg, 0);
+        return;
     case JCC_S:
         gen_compute_eflags_s(s, reg, inv);
         return;
-- 
1.7.12.1