[clang] [llvm] [RISCV] Add partial support for -fzero-call-used-regs (PR #194883)

[Pengcheng Wang via cfe-commits]

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@@ -0,0 +1,225 @@
+; RUN: llc < %s -verify-machineinstrs -mtriple=riscv64-unknown-unknown | FileCheck %s
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wangpc-pp wrote:

Use `llvm/utils/update_llc_test_checks.py`?

https://github.com/llvm/llvm-project/pull/194883