target/i386: use tcg_gen_ext_tl when applicable

Prefer it to gen_ext_tl in the common case where the destination is known.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index ef190416b4970a60e94614f99a7673f2e4e4447c..dc308f31041ed6fa6e10d75032a2d62f777a45f0 100644 (file)
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -883,16 +883,16 @@ static CCPrepare gen_prepare_eflags_c(DisasContext *s, TCGv reg)
     case CC_OP_SUBB ... CC_OP_SUBQ:
         /* (DATA_TYPE)CC_SRCT < (DATA_TYPE)CC_SRC */
         size = s->cc_op - CC_OP_SUBB;
-        gen_ext_tl(s->cc_srcT, s->cc_srcT, size, false);
-        gen_ext_tl(cpu_cc_src, cpu_cc_src, size, false);
+        tcg_gen_ext_tl(s->cc_srcT, s->cc_srcT, size);
+        tcg_gen_ext_tl(cpu_cc_src, cpu_cc_src, size);
         return (CCPrepare) { .cond = TCG_COND_LTU, .reg = s->cc_srcT,
                              .reg2 = cpu_cc_src, .use_reg2 = true };
 
     case CC_OP_ADDB ... CC_OP_ADDQ:
         /* (DATA_TYPE)CC_DST < (DATA_TYPE)CC_SRC */
         size = s->cc_op - CC_OP_ADDB;
-        gen_ext_tl(cpu_cc_dst, cpu_cc_dst, size, false);
-        gen_ext_tl(cpu_cc_src, cpu_cc_src, size, false);
+        tcg_gen_ext_tl(cpu_cc_dst, cpu_cc_dst, size);
+        tcg_gen_ext_tl(cpu_cc_src, cpu_cc_src, size);
         return (CCPrepare) { .cond = TCG_COND_LTU, .reg = cpu_cc_dst,
                              .reg2 = cpu_cc_src, .use_reg2 = true };
 
@@ -1041,8 +1041,8 @@ static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
         size = s->cc_op - CC_OP_SUBB;
         switch (jcc_op) {
         case JCC_BE:
-            gen_ext_tl(s->cc_srcT, s->cc_srcT, size, false);
-            gen_ext_tl(cpu_cc_src, cpu_cc_src, size, false);
+            tcg_gen_ext_tl(s->cc_srcT, s->cc_srcT, size);
+            tcg_gen_ext_tl(cpu_cc_src, cpu_cc_src, size);
             cc = (CCPrepare) { .cond = TCG_COND_LEU, .reg = s->cc_srcT,
                                .reg2 = cpu_cc_src, .use_reg2 = true };
             break;
@@ -1052,8 +1052,8 @@ static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
         case JCC_LE:
             cond = TCG_COND_LE;
         fast_jcc_l:
-            gen_ext_tl(s->cc_srcT, s->cc_srcT, size, true);
-            gen_ext_tl(cpu_cc_src, cpu_cc_src, size, true);
+            tcg_gen_ext_tl(s->cc_srcT, s->cc_srcT, size | MO_SIGN);
+            tcg_gen_ext_tl(cpu_cc_src, cpu_cc_src, size | MO_SIGN);
             cc = (CCPrepare) { .cond = cond, .reg = s->cc_srcT,
                                .reg2 = cpu_cc_src, .use_reg2 = true };
             break;