On 7/23/15 4:54 AM, He Kuang wrote:
trimmed cc-list, since it's not related to kernel.
Thank you for your guidence, and by referencing your last mail
and other llvm backends, I found setting
BPFMCAsmInfo::SupportsDebugInformation = true in BPFMCAsmInfo.h
thanks! yes. it was missing.
and fix some unhandeled switch can make llc output debug_info,
what do you mean ?
but important information is missing in the result:
hmm. I see slightly different picture.
With 'clang -O2 -target bpf -g -S a.c'
I see all the right info inside .s file.
with '-c a.c' for some reasons it produces bogus offset:
Abbrev Offset: 0xffff0000
Pointer Size: 8
/usr/local/bin/objdump: Warning: Debug info is corrupted, abbrev offset
(ffff0000) is larger than abbrev section size (4b)
and objdump fails to parse .o
I'm using llvm trunk 3.8. Do you see this as well?
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