diff mbox

[v4,28/64] target-cris: Use clz opcode

Message ID 1479906121-12211-29-git-send-email-rth@twiddle.net
State New
Headers show

Commit Message

Richard Henderson Nov. 23, 2016, 1:01 p.m. UTC 
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-cris/helper.h    | 1 -
 target-cris/op_helper.c | 5 -----
 target-cris/translate.c | 2 +-
 3 files changed, 1 insertion(+), 7 deletions(-)
diff mbox

Patch

diff --git a/target-cris/helper.h b/target-cris/helper.h
index ff35956..20d21c4 100644
--- a/target-cris/helper.h
+++ b/target-cris/helper.h
@@ -7,7 +7,6 @@  DEF_HELPER_1(rfn, void, env)
 DEF_HELPER_3(movl_sreg_reg, void, env, i32, i32)
 DEF_HELPER_3(movl_reg_sreg, void, env, i32, i32)
 
-DEF_HELPER_FLAGS_1(lz, TCG_CALL_NO_SE, i32, i32)
 DEF_HELPER_FLAGS_4(btst, TCG_CALL_NO_SE, i32, env, i32, i32, i32)
 
 DEF_HELPER_FLAGS_4(evaluate_flags_muls, TCG_CALL_NO_SE, i32, env, i32, i32, i32)
diff --git a/target-cris/op_helper.c b/target-cris/op_helper.c
index 5043039..e92505c 100644
--- a/target-cris/op_helper.c
+++ b/target-cris/op_helper.c
@@ -230,11 +230,6 @@  void helper_rfn(CPUCRISState *env)
 	env->pregs[PR_CCS] |= M_FLAG_V32;
 }
 
-uint32_t helper_lz(uint32_t t0)
-{
-	return clz32(t0);
-}
-
 uint32_t helper_btst(CPUCRISState *env, uint32_t t0, uint32_t t1, uint32_t ccs)
 {
 	/* FIXME: clean this up.  */
diff --git a/target-cris/translate.c b/target-cris/translate.c
index b910427..0ee05ca 100644
--- a/target-cris/translate.c
+++ b/target-cris/translate.c
@@ -767,7 +767,7 @@  static void cris_alu_op_exec(DisasContext *dc, int op,
         t_gen_subx_carry(dc, dst);
         break;
     case CC_OP_LZ:
-        gen_helper_lz(dst, b);
+        tcg_gen_clzi_tl(dst, b, TARGET_LONG_BITS);
         break;
     case CC_OP_MULS:
         tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b);