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I'm trying to fix the handling of multiple alternate constraints in Clang (see http://gcc.gnu.org/onlinedocs/gcc/Multi_002dAlternative.html#Multi_002dAlternative ). How should the constraints be represented in the .ll file? Clang currently will assert because the code generator sees a constraints string with the wrong number of comma-separated items. Basically, after some editing, it just concatenates them together. The c...

...you need to have Clang pick one tuple in the front end. See ChooseConstraintTuple in llvm-gcc for prior art. On Jul 29, 2010, at 11:36 AMPDT, John Thompson wrote: > I'm trying to fix the handling of multiple alternate constraints in > Clang (see http://gcc.gnu.org/onlinedocs/gcc/Multi_002dAlternative.html#Multi_002dAlternative) > . > > How should the constraints be represented in the .ll file? > > Clang currently will assert because the code generator sees a > constraints string with the wrong number of comma-separated items. > > Basically, after some editing, it...

...ng pick one tuple in the front end. See > ChooseConstraintTuple in llvm-gcc for prior art. > > On Jul 29, 2010, at 11:36 AMPDT, John Thompson wrote: > > I'm trying to fix the handling of multiple alternate constraints in > Clang (see > http://gcc.gnu.org/onlinedocs/gcc/Multi_002dAlternative.html#Multi_002dAlternative > ). > > How should the constraints be represented in the .ll file? > > Clang currently will assert because the code generator sees a constraints > string with the wrong number of comma-separated items. > > Basically, after some editing, it ju...