From c8e02dfe73bdd06c42adacd0249afb8490d8458b Mon Sep 17 00:00:00 2001 From: "David E. O'Brien" Date: Mon, 15 Nov 1999 04:23:40 +0000 Subject: [PATCH] Add -fdata-sections, which is a new GCC 2.95 optimization. Remove -fschedule-insns as it wasn't such a big win with 2.95 after all. Add the *BIG* win "-mpreferred-stack-boundary=2" optimiztion submitted by Dima. GCC 2.95 ensures the stack frame is always properly [opitimally] aligned by surrounding every function call by code simular to "addl $-12, %esp" / "addl $12, %esp". Here we need the reduction in space, with speed not an issue. --- sys/boot/i386/boot2/Makefile | 3 ++- sys/boot/i386/gptboot/Makefile | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/sys/boot/i386/boot2/Makefile b/sys/boot/i386/boot2/Makefile index 59ae6a71e872..b27780bfaf12 100644 --- a/sys/boot/i386/boot2/Makefile +++ b/sys/boot/i386/boot2/Makefile @@ -28,8 +28,9 @@ ORG1= 0x7c00 ORG2= 0x1000 CFLAGS= -elf -I${.CURDIR}/../btx/lib -I. \ - -Os -fno-builtin -fforce-addr -fschedule-insns \ + -Os -fno-builtin -fforce-addr -fdata-sections \ -malign-functions=0 -malign-jumps=0 -malign-loops=0 -mrtd \ + -mpreferred-stack-boundary=2 \ -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \ -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings diff --git a/sys/boot/i386/gptboot/Makefile b/sys/boot/i386/gptboot/Makefile index 59ae6a71e872..b27780bfaf12 100644 --- a/sys/boot/i386/gptboot/Makefile +++ b/sys/boot/i386/gptboot/Makefile @@ -28,8 +28,9 @@ ORG1= 0x7c00 ORG2= 0x1000 CFLAGS= -elf -I${.CURDIR}/../btx/lib -I. \ - -Os -fno-builtin -fforce-addr -fschedule-insns \ + -Os -fno-builtin -fforce-addr -fdata-sections \ -malign-functions=0 -malign-jumps=0 -malign-loops=0 -mrtd \ + -mpreferred-stack-boundary=2 \ -Wall -Waggregate-return -Wbad-function-cast -Wcast-align \ -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings