[llvm] [X86] Fix more medium code model addressing modes (PR #75641)

[Reid Kleckner via llvm-commits]

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@@ -1910,20 +1915,12 @@ bool X86DAGToDAGISel::matchAddress(SDValue N, X86ISelAddressMode &AM) {
 
   // Post-processing: Convert foo to foo(%rip), even in non-PIC mode,
   // because it has a smaller encoding.
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rnk wrote:

Aha, this is probably doing the most work to fix small / medium code model discrepancies.

https://github.com/llvm/llvm-project/pull/75641