================
@@ -1715,6 +1716,130 @@ static void findCSKYMultilibs(const Driver &D, const
llvm::Triple &TargetTriple,
Result.Multilibs = CSKYMultilibs;
}
+/// Extend the multi-lib re-use selection mechanism for RISC-V.
+/// This function will try to re-use multi-lib if they are compatible.
+/// Definition of compatible:
+/// - ABI must be the same.
+/// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
+/// is a subset of march=rv32imc.
+/// - march that contains atomic extension can't reuse multi-lib that
+/// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
+/// march=rv32ima are not compatible, because software and hardware
+/// atomic operation can't work together correctly.
+static bool
+RISCVMultilibSelect(const MultilibSet &RISCVMultilibSet, StringRef Arch,
----------------
topperc wrote:
function names should start with a verb (an action word) and a lower case
letter. Maybe `selectRISCVMultilib`?
https://github.com/llvm/llvm-project/pull/73765
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