On Mon, Dec 14, 2015 at 11:20 PM, William Dillon
<will...@housedillon.com> wrote:
> I built a very simple swift program (minimal hello world) using the arm
> swiftc and the x86_64 swiftc, and had them emit the sil and llvm ir. The sil
> it substantially similar between the toolchain tarball on swift.org and my
> arm swiftc, except that the arm version has a few sil_vtable, NSArray, and
> ObjectiveC references that are not in the x86_86 version. Is it possible
> that the arm architecture is triggering assumptions about whether this target
> is linux or darwin?
Although I believe we were very diligent about using _runtime(_ObjC) /
_runtime(_Native), a bug like that is definitely possible.
> Fortunately or unfortunately, by the time it gets to LLVM IR it’s effectively
> identical (other than the odd difference in variable size or alignment).
I would expect an interesting piece to appear in the standard library,
since it is the .so that the dynamic loader complains about.
You can try to take ./validation-test/stdlib/MicroStdlib.swift and
build a libswiftCore.so that vends a print() function, and see if you
can reproduce the relocation issue.
Dmitri
--
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <griboz...@gmail.com>*/
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