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[Qemu-devel] [PATCH 03/54] target/sh4: fix TCG leak during gusa sequence

From: Michael Roth
Subject: [Qemu-devel] [PATCH 03/54] target/sh4: fix TCG leak during gusa sequence
Date: Tue, 6 Feb 2018 13:14:24 -0600

From: Alex Bennée <address@hidden>

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: address@hidden
Reported-by: John Paul Adrian Glaubitz <address@hidden>
Suggested-by: Richard Henderson <address@hidden>
Signed-off-by: Alex Bennée <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Reviewed-by: Aurelien Jarno <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
(cherry picked from commit 6d56fc6cc372284a4571f09b361a9ccd99318103)
Signed-off-by: Michael Roth <address@hidden>
 target/sh4/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 703020fe87..b4b5c822d0 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -2189,7 +2189,7 @@ 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)) {

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