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-rw-r--r--gcc/defaults.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/defaults.h b/gcc/defaults.h
index c1776b05690..d2609e761c2 100644
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -1006,6 +1006,15 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define MOVE_MAX_PIECES MOVE_MAX
#endif
+/* STORE_MAX_PIECES is the number of bytes at a time that we can
+ store efficiently. Due to internal GCC limitations, this is
+ MOVE_MAX_PIECES limited by the number of bytes GCC can represent
+ for an immediate constant. */
+
+#ifndef STORE_MAX_PIECES
+#define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT))
+#endif
+
#ifndef MAX_MOVE_MAX
#define MAX_MOVE_MAX MOVE_MAX
#endif