Hexagon (target/hexagon) fix bug in conv_df2uw_chop

Fix typo that checked for 32 bit nan instead of 64 bit

Test case added in tests/tcg/hexagon/usr.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-11-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

target/hexagon/op_helper.c

@@ -829,7 +829,7 @@ uint32_t HELPER(conv_df2uw_chop)(CPUHexagonState *env, float64 RssV)
     uint32_t RdV;
     arch_fpop_start(env);
     /* Hexagon checks the sign before rounding */
-    if (float64_is_neg(RssV) && !float32_is_any_nan(RssV)) {
+    if (float64_is_neg(RssV) && !float64_is_any_nan(RssV)) {
         float_raise(float_flag_invalid, &env->fp_status);
         RdV = 0;
     } else {

tests/tcg/hexagon/usr.c

@@ -1068,6 +1068,10 @@ int main()
     TEST_P_OP_P(conv_df2d,        DF_SNaN,  0xffffffffffffffffULL,  USR_FPINVF);
     TEST_R_OP_P(conv_df2uw_chop,  DF_QNaN,  0xffffffff,             USR_FPINVF);
     TEST_R_OP_P(conv_df2uw_chop,  DF_SNaN,  0xffffffff,             USR_FPINVF);
+
+    /* Test for typo in HELPER(conv_df2uw_chop) */
+    TEST_R_OP_P(conv_df2uw_chop, 0xffffff7f00000001ULL, 0xffffffff, USR_FPINVF);
+
     TEST_R_OP_P(conv_df2w_chop,   DF_QNaN,  0xffffffff,             USR_FPINVF);
     TEST_R_OP_P(conv_df2w_chop,   DF_SNaN,  0xffffffff,             USR_FPINVF);
     TEST_P_OP_P(conv_df2ud_chop,  DF_QNaN,  0xffffffffffffffffULL,  USR_FPINVF);