10/14/13 4:31 PM, Dimitry Andric ???????(??):
There is a problem when clang does tail-call optimization on i386 with
PIC in effect, and it emits GOT relocations for the tail-called
functions, instead of PLT relocations. In some scenarios, such as with
the way X.org does lazy dynamic linking, this can cause problems. See
alsohttp://llvm.org/PR15086 (which I unfortunately did not get much
response on).
Ouch... That seems like a show-stopper for clang-adoption... At least,
on i386.
For now, a workaround is to recompile the affected .so files with
-fno-optimize-sibling-calls (if you are optimizing).
Maybe, our clang (both src/ and ports/) should be compiled with that
being in effect by default on i386?
-mi
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