[PATCH 07/18] target/s390x: Use clmul_16* routines

[Richard Henderson <richard.henderson@linaro.org>]

Use generic routines for 16-bit carry-less multiply.
Remove our local version of galois_multiply16.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/s390x/tcg/vec_int_helper.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/target/s390x/tcg/vec_int_helper.c b/target/s390x/tcg/vec_int_helper.c
index e110a7581a..523d6375bb 100644
--- a/target/s390x/tcg/vec_int_helper.c
+++ b/target/s390x/tcg/vec_int_helper.c
@@ -180,7 +180,6 @@ static uint##TBITS##_t galois_multiply##BITS(uint##TBITS##_t a,                \
     }                                                                          \
     return res;                                                                \
 }
-DEF_GALOIS_MULTIPLY(16, 32)
 DEF_GALOIS_MULTIPLY(32, 64)
 
 static S390Vector galois_multiply64(uint64_t a, uint64_t b)
@@ -226,6 +225,25 @@ void HELPER(gvec_vgfma8)(void *v1, const void *v2, const void *v3,
     *(Int128 *)v1 = int128_xor(r, *(Int128 *)v4);
 }
 
+static Int128 do_gfm16(Int128 n, Int128 m)
+{
+    Int128 e = clmul_16x4_even(n, m);
+    Int128 o = clmul_16x4_odd(n, m);
+    return int128_xor(e, o);
+}
+
+void HELPER(gvec_vgfm16)(void *v1, const void *v2, const void *v3, uint32_t d)
+{
+    *(Int128 *)v1 = do_gfm16(*(const Int128 *)v2, *(const Int128 *)v3);
+}
+
+void HELPER(gvec_vgfma16)(void *v1, const void *v2, const void *v3,
+                         const void *v4, uint32_t d)
+{
+    Int128 r = do_gfm16(*(const Int128 *)v2, *(const Int128 *)v3);
+    *(Int128 *)v1 = int128_xor(r, *(Int128 *)v4);
+}
+
 #define DEF_VGFM(BITS, TBITS)                                                  \
 void HELPER(gvec_vgfm##BITS)(void *v1, const void *v2, const void *v3,         \
                              uint32_t desc)                                    \
@@ -243,7 +261,6 @@ void HELPER(gvec_vgfm##BITS)(void *v1, const void *v2, const void *v3,         \
         s390_vec_write_element##TBITS(v1, i, d);                               \
     }                                                                          \
 }
-DEF_VGFM(16, 32)
 DEF_VGFM(32, 64)
 
 void HELPER(gvec_vgfm64)(void *v1, const void *v2, const void *v3,
@@ -279,7 +296,6 @@ void HELPER(gvec_vgfma##BITS)(void *v1, const void *v2, const void *v3,        \
         s390_vec_write_element##TBITS(v1, i, d);                               \
     }                                                                          \
 }
-DEF_VGFMA(16, 32)
 DEF_VGFMA(32, 64)
 
 void HELPER(gvec_vgfma64)(void *v1, const void *v2, const void *v3,
-- 
2.34.1