[PATCH] D120329: [SelectionDAG] Emit calls to __divei4 and friends for division/remainder of large integers

[LuoYuanke via Phabricator via llvm-commits]

LuoYuanke added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:3949
+
+  return TLI.LowerCallTo(CLI).first;
+}
----------------
I notice in RFC (https://discourse.llvm.org/t/rfc-add-support-for-division-of-large-bitint-builtins-selectiondag-globalisel-clang/60329) the prototype of the function is `void __udivei4(unsigned int *quo, unsigned int *a, unsigned int *b, unsigned int bits);`. I didn't find the code to pass `quo` and the code to load the value from `quo` after the call.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120329/new/

https://reviews.llvm.org/D120329