[llvm] [clang] riscv vector cc (PR #77560)

[Craig Topper via cfe-commits]

================
@@ -24,6 +24,19 @@ def CSR_ILP32D_LP64D
     : CalleeSavedRegs<(add CSR_ILP32_LP64,
                        F8_D, F9_D, (sequence "F%u_D", 18, 27))>;
 
+defvar CSR_V = (add (sequence "V%u", 1, 7), (sequence "V%u", 24, 31),
+                     V2M2, V4M2, V6M2, V24M2, V26M2, V28M2, V30M2,
----------------
topperc wrote:

Do we really need to list all LMUL variations?

https://github.com/llvm/llvm-project/pull/77560
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