[cfe-dev] Microsoft C++ exception handling.

[João Matos]

I just learned about the inreg LLVM parameter attribute, which seems to do
this.

declare external
void @___CxxFrameHandler3(i32* inreg nocapture) nounwind

@EHFuncInfo = global i32 0, align 4

define void @main() {
  tail call void @___CxxFrameHandler3(i32* @EHFuncInfo)
  ret void
}

generates:

_main:                                  # @main
        movl    $_EHFuncInfo, %eax
        jmp     ____CxxFrameHandler3    # TAILCALL

-- 
João Matos
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