[cfe-dev] The status of MC-COFF(aka integrated-as)/cygming
geek4civic at gmail.com
Mon Oct 11 10:32:30 CDT 2010
Good midnight, everyone!
Now clang/llvm on cygming can be built selfhost with a few patch ;)
I am trying to build stage2 clang/llvm with -integrated-as.
I met some issues below;
* MC-COFF emits .comm as individual "linkonce" section.
Thus, the order in .bss must be differ against one assembled by GNU as.
It might have bugs and I am investigating now.
* Trail alignment shim of each section
GNU as emits alignment to trail of .text. MC-COFF does not.
* MC-COFF does relaxation more strongly
I saw a few cases, MC-COFF emits disp8 for branch (although GNU as
At a glance, It might be correct.
I have not met regression yet.
I saw a few cases; MC-COFF emits quite different instruction sequences.
It might be my mistake, still in investigating.
I will file one for serious issues.
have a nice hacking! ...Takumi
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