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Re: [PATCH] Kill TYPE_METHODS debug 1/9
On 07/20/2017 06:03 PM, Jim Wilson wrote:
I wasn't sure what to make of your last message, so I tried to see if
I could build a toolchain that defaults to stabs so I could look at
this. I discovered that -freorder-functions doesn't work with stabs
on an elf target, as we get a cross section label subtraction that the
assembler can't compute. I had to manually disable that optimization.
I also had to disable the x86 specific change to enable
-freorder-blocks-and-partition at -O2. I managed to get it working
for x86_64-linux and i686-pc-cygwin. But the fact that -O2 and stabs
don't work together by default anymore suggest that there are no
serious stabs users except on old legacy systems that don't support
named sections, and hence don't support -freorder-functions.
Sorry if I was unclear. Indeed a complete build failed building libraries as
you describe. But for testing purposes I copied stabs-preferring xg++/xgcc and
cc1/cc1plus to an dwarf install and pointed gdb at that. Plus some manual testing.
Anyways, your new dbxout.c patch looks good. And maybe we should
think about deprecating the stabs support some day.
agreed.
I have committed the patch series, thanks all for comments.
nathan
--
Nathan Sidwell