search for: lowereh_dwarf_cfa

..._init_context_1 [1] initialize the wrong context, and the overall exception handling fail. I find Hal provided patch years ago adding ISD::EH_DWARF_CFA, which corresponding to __builtin_dwarf_cfa(), and let us have the opportunity to handle __builtin_dwarf_cfa() for our own [2]. I copy Mips' lowerEH_DWARF_CFA for our target, and it *just* works [3]. I have to admit that I don't understand what Hal explained in his patch, also don't know why Mips code work for ours. Here I have two questions: 1. What is __builtin_dwarf_cfa()? What I know about CFA (Canonical Frame Address) is, it&...