[clang] [llvm] [TargetLibraryInfo] Add libmvec support for risc-v (PR #119844)

[Mark Goncharov via cfe-commits]

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@@ -49,6 +49,10 @@ enum class VFISAKind {
   AVX,          // x86 AVX
   AVX2,         // x86 AVX2
   AVX512,       // x86 AVX512
+  RVVM1,        // RISC-V Vector Extension LMUL=1
+  RVVM2,        // RISC-V Vector Extension LMUL=2
+  RVVM4,        // RISC-V Vector Extension LMUL=4
+  RVVM8,        // RISC-V Vector Extension LMUL=8
----------------
mga-sc wrote:

Are you sure we need to enable all of them (now enabled only one for each 
RISC-V and AArch64)?

https://github.com/llvm/llvm-project/pull/119844
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