From: Stefan Reinauer Date: Fri, 24 Jun 2011 00:12:08 +0000 (-0700) Subject: Use -mno-sse to prevent overzealous gcc optimizations X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=coreboot.git;a=commitdiff_plain;h=ccf28ba9cb562e74ce17439d88dcc5a10aefeef6 Use -mno-sse to prevent overzealous gcc optimizations The offending part that made coreboot crash with some toolchains was that gcc emits SSE instructions but coreboot did not enable SSE at that point. Since the gain for coreboot using SSE instructions is not measurable, let's not use SSE instructions rather than enabling SSE early on. One rationale behind this is that other parts of coreboot, like the SMM handler would need fixing because the XMM registers are not saved on SMM entry. Thus keep it simple. Change-Id: I14f0942f300085767ece44cec570fb15c761e88d Signed-off-by: Stefan Reinauer Reviewed-on: http://review.coreboot.org/694 Reviewed-by: Ronald G. Minnich Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile index 49263941d..f5d43d0e8 100644 --- a/util/xcompile/xcompile +++ b/util/xcompile/xcompile @@ -84,6 +84,10 @@ testcc "$CC" "$CFLAGS-Wl,--build-id=none " && CFLAGS="$CFLAGS-Wl,--build-id=none # now: testcc "$CC" "$CFLAGS-Wno-unused-but-set-variable " && \ CFLAGS="$CFLAGS-Wno-unused-but-set-variable " +# Use bfd linker instead of gold if available: +testcc "$CC" "$CFLAGS-fuse-ld=bfd " && CFLAGS="$CFLAGS-fuse-ld=bfd " && LINKER_SUFFIX='.bfd' +# Prevent SSE instructions sneaking in: +testcc "$CC" "$CFLAGS-mno-sse " && CFLAGS="$CFLAGS-mno-sse " if which gcc 2>/dev/null >/dev/null; then HOSTCC=gcc