[llvm] [PowerPC] provide CFI for ELF32 to unwind cr2, cr3, cr4 (PR #83098)

[George Koehler via llvm-commits]

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@@ -15,11 +15,12 @@ entry:
 }
 
 ; PPC32-LABEL: test_cr2:
-; PPC32: stwu 1, -32(1)
-; PPC32: stw 31, 28(1)
+; PPC32: stwu 1, -[[#%u,AMT:]](1)
+; PPC32: stw 31, [[#AMT - 4]](1)
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kernigh wrote:

Done. I stopped adding CFI to test_cr234, because cloberAllNvCrField has similar CFI.

https://github.com/llvm/llvm-project/pull/83098