[llvm] [PowerPC] custom lower v1024i1 load/store (PR #126969)

[Lei Huang via llvm-commits]

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@@ -1104,7 +1104,7 @@ define void @test_ldst_1(ptr nocapture readonly %vqp, ptr %vpp, <16 x i8> %vc, p
 ; CHECK-O0-NEXT:    plxvp vsp34, 8(r4), 0
 ; CHECK-O0-NEXT:    xxlor vs0, v4, v4
 ; CHECK-O0-NEXT:    pmxvf64gernn wacc0, vsp34, vs0, 0, 0
-; CHECK-O0-NEXT:    dmxxextfdmr512 wacc0, vsp34, vsp36, 0
+; CHECK-O0-NEXT:    dmxxextfdmr512 wacc0, vsp36, vsp34, 0
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lei137 wrote:

I'm a bit concerned that even though the extracted values are placed into different vsp registers, there are no changes in where they are stored.  In the changes above, there are equivalent updates to the store instructions when the extracted values are placed into different register pairs.

https://github.com/llvm/llvm-project/pull/126969