[clang] [llvm] [MIPS] Add FeatureMSA to i6400 and i6500 cores (PR #134985)

[Min-Yih Hsu via cfe-commits]

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+// Check target CPUs are correctly passed.
+
+// RUN: %clang --target=mips64 -### -c %s 2>&1 -mcpu=i6400 -mmsa | FileCheck -check-prefix=MCPU-I6400 %s
+// MCPU-I6400: "-target-cpu" "i6400"
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mshockwave wrote:

usually we will check all the features implied by this CPU. Not sure if this is practical in your case though.

https://github.com/llvm/llvm-project/pull/134985