[llvm] [llvm] Support multiple save/restore points in mir (PR #119357)

[Michael Maitland via llvm-commits]

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@@ -610,6 +610,20 @@ LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::yaml::MachineJumpTable::Entry)
 namespace llvm {
 namespace yaml {
 
+struct SRPEntry {
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michaelmaitland wrote:

nit: rename to `SaveRestorePointEntry`? I don't think SRP is a common acronym. Also please add a docstring.

https://github.com/llvm/llvm-project/pull/119357