tcg/arm: Implement negsetcond_i32

Trivial, as we simply need to load a different constant
in the conditional move.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg/arm/tcg-target.c.inc

@@ -1975,6 +1975,14 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[3])],
                         ARITH_MOV, args[0], 0, 0);
         break;
+    case INDEX_op_negsetcond_i32:
+        tcg_out_dat_rIN(s, COND_AL, ARITH_CMP, ARITH_CMN, 0,
+                        args[1], args[2], const_args[2]);
+        tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[3]],
+                        ARITH_MVN, args[0], 0, 0);
+        tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[3])],
+                        ARITH_MOV, args[0], 0, 0);
+        break;
 
     case INDEX_op_brcond2_i32:
         c = tcg_out_cmp2(s, args, const_args);
@@ -2112,6 +2120,7 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
     case INDEX_op_add_i32:
     case INDEX_op_sub_i32:
     case INDEX_op_setcond_i32:
+    case INDEX_op_negsetcond_i32:
         return C_O1_I2(r, r, rIN);
 
     case INDEX_op_and_i32:

tcg/arm/tcg-target.h

@@ -116,7 +116,7 @@ extern bool use_neon_instructions;
 #define TCG_TARGET_HAS_sextract_i32     use_armv7_instructions
 #define TCG_TARGET_HAS_extract2_i32     1
 #define TCG_TARGET_HAS_movcond_i32      1
-#define TCG_TARGET_HAS_negsetcond_i32   0
+#define TCG_TARGET_HAS_negsetcond_i32   1
 #define TCG_TARGET_HAS_mulu2_i32        1
 #define TCG_TARGET_HAS_muls2_i32        1
 #define TCG_TARGET_HAS_muluh_i32        0