[llvm] [PowerPC] Support local-dynamic TLS relocation on AIX (PR #66316)

[Kai Luo via llvm-commits]

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@@ -156,10 +156,11 @@ define void @storesTIInit(double %Val) #0 {
 ; SMALL32:       # %bb.0: # %entry
 ; SMALL32-NEXT:    mflr 0
 ; SMALL32-NEXT:    stwu 1, -32(1)
-; SMALL32-NEXT:    lwz 3, L..C4(2) # target-flags(ppc-lo) @TIInit
-; SMALL32-NEXT:    lwz 4, L..C5(2) # target-flags(ppc-tlsgd) @TIInit
 ; SMALL32-NEXT:    stw 0, 40(1)
-; SMALL32-NEXT:    bla .__tls_get_addr[PR]
+; SMALL32-NEXT:    lwz 6, L..C4(2) # target-flags(ppc-tlsld) @TIInit
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bzEq wrote:

Can we use `r4` here? That should align with the assembler manual and save register use.

https://github.com/llvm/llvm-project/pull/66316