diff -r 5dbaa8f0f72e -r 3ef14bab6254 jdk/makefiles/common/Defs-macosx.gmk
--- a/jdk/makefiles/common/Defs-macosx.gmk	Thu Jun 07 20:40:02 2012 -0700
+++ b/jdk/makefiles/common/Defs-macosx.gmk	Thu Jun 07 20:40:50 2012 -0700
@@ -106,10 +106,10 @@
 
 # For all platforms, do not omit the frame pointer register usage. 
 #    We need this frame pointer to make it easy to walk the stacks.
-#    This should be the default on X86, but ia64 and amd64 may not have this
-#    as the default.
-CFLAGS_REQUIRED_amd64   += -m64 -fno-omit-frame-pointer -D_LITTLE_ENDIAN
-LDFLAGS_COMMON_amd64    += -m64
+#    This should be the default on X86, but ia64, and x86_64
+#    may not have this as the default.
+CFLAGS_REQUIRED_x86_64  += -m64 -fno-omit-frame-pointer -D_LITTLE_ENDIAN
+LDFLAGS_COMMON_x86_64   += -m64
 CFLAGS_REQUIRED_i586    += -m32 -fno-omit-frame-pointer -D_LITTLE_ENDIAN
 LDFLAGS_COMMON_i586     += -m32
 CFLAGS_REQUIRED_ia64    += -m64 -fno-omit-frame-pointer -D_LITTLE_ENDIAN
@@ -163,7 +163,7 @@
 PIC_CODE_SMALL = -fpic
 GLOBAL_KPIC = $(PIC_CODE_LARGE)
 CFLAGS_COMMON   += $(GLOBAL_KPIC) $(GCC_WARNINGS)
-ifeq ($(ARCH), amd64)
+ifeq ($(ARCH), x86_64)
  CFLAGS_COMMON += -pipe
 endif