[llvm] [RISCV] Add basic Mach-O triple support. (PR #141682)

[Jonas Devlieghere via llvm-commits]

================
@@ -275,6 +275,13 @@ static std::string computeAMDDataLayout(const Triple &TT) {
 }
 
 static std::string computeRISCVDataLayout(const Triple &TT, StringRef ABIName) {
+  if (TT.isOSBinFormatMachO()) {
+    assert(TT.isLittleEndian() && "Invalid endianness");
+    assert(TT.isArch32Bit() && "Invalid triple.");
----------------
JDevlieghere wrote:

Nit: either have a period for both or neither.
```suggestion
    assert(TT.isLittleEndian() && "Invalid endianness");
    assert(TT.isArch32Bit() && "Invalid triple");
```

https://github.com/llvm/llvm-project/pull/141682