target/sh4: fix TCG leak during gusa sequence

This fixes bug #1735384 while running java under qemu-sh4. When debug was enabled it showed a problem with TCG temps. Once fixed I was able to run java -version normally. Cc: [email protected] Reported-by: John Paul Adrian Glaubitz <[email protected]> Suggested-by: Richard Henderson <[email protected]> Signed-off-by: Alex Bennée <[email protected]> Message-Id: <[email protected]> Reviewed-by: Richard Henderson <[email protected]> Reviewed-by: Aurelien Jarno <[email protected]> Signed-off-by: Aurelien Jarno <[email protected]>
dreddy · Dec 18, 2017 · 6d56fc6 · 6d56fc6
1 parent e691e0e
commit 6d56fc6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/target/sh4/translate.c b/target/sh4/translate.c
@@ -2191,7 +2191,7 @@ static int decode_gusa(DisasContext *ctx, CPUSH4State *env, int *pmax_insns)
     }
 
     /* If op_src is not a valid register, then op_arg was a constant.  */
-    if (op_src < 0) {
+    if (op_src < 0 && !TCGV_IS_UNUSED(op_arg)) {
         tcg_temp_free_i32(op_arg);
     }