[clang] [llvm] [RISCV][MC] Add support for Q extension (PR #139369)

[Craig Topper via llvm-commits]

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@@ -462,6 +474,12 @@ def FPR64C : RISCVRegisterClass<[f64], 64, (add
   (sequence "F%u_D", 8, 9)
 )>;
 
+def FPR128 : RISCVRegisterClass<
+                 [f128], 128,
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topperc wrote:

Format this the same was as FPR64?

https://github.com/llvm/llvm-project/pull/139369