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-rw-r--r--Rules.mak2
1 files changed, 2 insertions, 0 deletions
diff --git a/Rules.mak b/Rules.mak
index e63f6a4b6..7b59350fd 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -175,6 +175,8 @@ OPTIMIZATION:=
OPTIMIZATION+=$(call check_gcc,-Os,-O2)
# Use the gcc 3.4 -funit-at-a-time optimization when available
OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,)
+# shrinks code by about 0.1%
+OPTIMIZATION+=$(call check_gcc,-fmerge-all-constants)
GCC_MAJOR_VER?=$(shell $(CC) -dumpversion | cut -d . -f 1)
#GCC_MINOR_VER?=$(shell $(CC) -dumpversion | cut -d . -f 2)