[clang] [driver][AIX] Accept '32_64' and 'any' as valid value for OBJECT_MODE (PR #205180)

[David Tenty via cfe-commits]

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@@ -676,7 +676,8 @@ static llvm::Triple computeTargetTriple(const Driver &D,
 
       if (ObjectMode == "64") {
         AT = Target.get64BitArchVariant().getArch();
-      } else if (ObjectMode == "32") {
+      } else if (ObjectMode == "32" || ObjectMode == "32_64" ||
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daltenty wrote:

I don't think this is the intention, this makes these options mutate the target to the 32-bit variant the same way `OBJECT_MODE=32`. 

We should just ignore these settings and take no action at all.

https://github.com/llvm/llvm-project/pull/205180