[clang] [llvm] [RISCV][P-ext] Support Packed Element Extract (PR #221565)

[Craig Topper via cfe-commits]

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@@ -66,6 +66,15 @@ typedef uint32_t uint32x2_t __attribute__((__vector_size__(8)));
     return op __rs1;                                                           \
   }
 
+#define __packed_extract(name, rty, ty, max_idx)                               \
+  static __inline__ rty __DEFAULT_FN_ATTRS __riscv_##name(                     \
+      ty __v, const unsigned __idx)                                            \
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topperc wrote:

Drop the `const`. It doesn't do anything.

https://github.com/llvm/llvm-project/pull/221565