microblaze: cleanup helper_addkc

Remove unused addition and rename to helper_carry.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

target-microblaze/helper.h

@@ -2,7 +2,7 @@
 
 DEF_HELPER_1(raise_exception, void, i32)
 DEF_HELPER_0(debug, void)
-DEF_HELPER_FLAGS_3(addkc, TCG_CALL_PURE | TCG_CALL_CONST, i32, i32, i32, i32)
+DEF_HELPER_FLAGS_3(carry, TCG_CALL_PURE | TCG_CALL_CONST, i32, i32, i32, i32)
 DEF_HELPER_2(cmp, i32, i32, i32)
 DEF_HELPER_2(cmpu, i32, i32, i32)
 

target-microblaze/op_helper.c

@@ -128,12 +128,9 @@ uint32_t helper_cmpu(uint32_t a, uint32_t b)
     return t;
 }
 
-uint32_t helper_addkc(uint32_t a, uint32_t b, uint32_t cf)
+uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
 {
-    uint32_t d, ncf;
-
-    d = a + b + cf;
-
+    uint32_t ncf;
     ncf = compute_carry(a, b, cf);
     return ncf;
 }

target-microblaze/translate.c

@@ -232,13 +232,13 @@ static void dec_add(DisasContext *dc)
 
     if (dc->rd) {
         TCGv ncf = tcg_temp_new();
-        gen_helper_addkc(ncf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
+        gen_helper_carry(ncf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
         tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
         tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
         write_carry(dc, ncf);
         tcg_temp_free(ncf);
     } else {
-        gen_helper_addkc(cf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
+        gen_helper_carry(cf, cpu_R[dc->ra], *(dec_alu_op_b(dc)), cf);
         write_carry(dc, cf);
     }
     tcg_temp_free(cf);
@@ -302,13 +302,13 @@ static void dec_sub(DisasContext *dc)
 
     if (dc->rd) {
         TCGv ncf = tcg_temp_new();
-        gen_helper_addkc(ncf, na, *(dec_alu_op_b(dc)), cf);
+        gen_helper_carry(ncf, na, *(dec_alu_op_b(dc)), cf);
         tcg_gen_add_tl(cpu_R[dc->rd], na, *(dec_alu_op_b(dc)));
         tcg_gen_add_tl(cpu_R[dc->rd], cpu_R[dc->rd], cf);
         write_carry(dc, ncf);
         tcg_temp_free(ncf);
     } else {
-        gen_helper_addkc(cf, na, *(dec_alu_op_b(dc)), cf);
+        gen_helper_carry(cf, na, *(dec_alu_op_b(dc)), cf);
         write_carry(dc, cf);
     }
     tcg_temp_free(cf);