[Qemu-devel] [PATCH 36/62] tcg-s390: Icache flush is a no-op.

[Richard Henderson]

Before gcc 4.2, __builtin___clear_cache doesn't exist, and
afterward the gcc s390 backend implements it as nothing.

Signed-off-by: Richard Henderson <address@hidden>
---
 tcg/s390/tcg-target.h |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)

diff --git a/tcg/s390/tcg-target.h b/tcg/s390/tcg-target.h
index 0af4d38..fae8ed7 100644
--- a/tcg/s390/tcg-target.h
+++ b/tcg/s390/tcg-target.h
@@ -95,9 +95,4 @@ enum {
 
 static inline void flush_icache_range(unsigned long start, unsigned long stop)
 {
-#if QEMU_GNUC_PREREQ(4, 1)
-    __builtin___clear_cache((char *) start, (char *) stop);
-#else
-#error not implemented
-#endif
 }
-- 
1.7.0.1