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

[Craig Topper via cfe-commits]

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@@ -0,0 +1,30 @@
+// REQUIRES: riscv-registered-target
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topperc wrote:

I didn't think builtins required the backend target to be compiled in if the test isn't generating code.

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