[llvm] [AMDGPU] Ensure non-reserved CSR spilled regs are live-in (PR #146427)

[Shilei Tian via llvm-commits]

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@@ -995,6 +996,12 @@ void SIFrameLowering::emitCSRSpillStores(
         }
       };
 
+  for (const auto &Reg : make_first_range(WWMScratchRegs)) {
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shiltian wrote:

no auto pls

https://github.com/llvm/llvm-project/pull/146427