[llvm] [RegAlloc] Fix register's live range for early-clobber (PR #152895)

[via llvm-commits]

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@@ -0,0 +1,75 @@
+# RUN: llc -mtriple=i386-unknown-linux-gnu -start-before=twoaddressinstruction -verify-machineinstrs -o - %s
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LuoYuanke wrote:

Yes, the original purpose is to use machineverifier to check the live range of the register that is re-materialized, but I can add CHECK for this case.

https://github.com/llvm/llvm-project/pull/152895