Patchwork [34/38] target-sparc: Use mul*2 for multiply

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Submitter Richard Henderson
Date Feb. 20, 2013, 7:52 a.m.
Message ID <1361346746-8511-35-git-send-email-rth@twiddle.net>
Download mbox | patch
Permalink /patch/221984/
State New
Headers show

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Richard Henderson - Feb. 20, 2013, 7:52 a.m.
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-sparc/translate.c | 45 ++++++++++++++++++---------------------------
 1 file changed, 18 insertions(+), 27 deletions(-)

Patch

diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index d3e2acf..f99b82a 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -642,39 +642,30 @@  static inline void gen_op_mulscc(TCGv dst, TCGv src1, TCGv src2)
 
 static inline void gen_op_multiply(TCGv dst, TCGv src1, TCGv src2, int sign_ext)
 {
-    TCGv_i32 r_src1, r_src2;
-    TCGv_i64 r_temp, r_temp2;
-
-    r_src1 = tcg_temp_new_i32();
-    r_src2 = tcg_temp_new_i32();
-
-    tcg_gen_trunc_tl_i32(r_src1, src1);
-    tcg_gen_trunc_tl_i32(r_src2, src2);
-
-    r_temp = tcg_temp_new_i64();
-    r_temp2 = tcg_temp_new_i64();
-
+#if TARGET_LONG_BITS == 32
     if (sign_ext) {
-        tcg_gen_ext_i32_i64(r_temp, r_src2);
-        tcg_gen_ext_i32_i64(r_temp2, r_src1);
+        tcg_gen_muls2_tl(dst, cpu_y, src1, src2);
     } else {
-        tcg_gen_extu_i32_i64(r_temp, r_src2);
-        tcg_gen_extu_i32_i64(r_temp2, r_src1);
+        tcg_gen_mulu2_tl(dst, cpu_y, src1, src2);
     }
+#else
+    TCGv t0 = tcg_temp_new_i64();
+    TCGv t1 = tcg_temp_new_i64();
 
-    tcg_gen_mul_i64(r_temp2, r_temp, r_temp2);
-
-    tcg_gen_shri_i64(r_temp, r_temp2, 32);
-    tcg_gen_trunc_i64_tl(cpu_y, r_temp);
-    tcg_temp_free_i64(r_temp);
-    tcg_gen_andi_tl(cpu_y, cpu_y, 0xffffffff);
-
-    tcg_gen_trunc_i64_tl(dst, r_temp2);
+    if (sign_ext) {
+        tcg_gen_ext32s_i64(t0, src1);
+        tcg_gen_ext32s_i64(t1, src2);
+    } else {
+        tcg_gen_ext32u_i64(t0, src1);
+        tcg_gen_ext32u_i64(t1, src2);
+    }
 
-    tcg_temp_free_i64(r_temp2);
+    tcg_gen_mul_i64(dst, t0, t1);
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
 
-    tcg_temp_free_i32(r_src1);
-    tcg_temp_free_i32(r_src2);
+    tcg_gen_shri_i64(cpu_y, dst, 32);
+#endif
 }
 
 static inline void gen_op_umul(TCGv dst, TCGv src1, TCGv src2)