thopre added inline comments.
================
Comment at: lib/Basic/Targets/AArch64.h:85-89
+ StringRef getConstraintRegister(StringRef Constraint,
+ StringRef Expression) const override {
+ return Expression;
+ }
+
----------------
From what I understood of the original patch, getConstraintRegister is a sort
of a more comprehensive version of convertRegister. On ARM convertRegister
handles U and p constraint specially, should this do the same?
https://reviews.llvm.org/D45965
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