[llvm] [X86][GlobalISel] Enable G_BUILD_VECTOR and G_CONSTANT_POOL (PR #92844)

[Evgenii Kudriashov via llvm-commits]

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@@ -505,6 +505,9 @@ bool X86PassConfig::addRegBankSelect() {
 
 bool X86PassConfig::addGlobalInstructionSelect() {
   addPass(new InstructionSelect(getOptLevel()));
+  // Add GlobalBaseReg in case there is no SelectionDAG passes afterwards
+  if (isGlobalISelAbortEnabled())
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e-kud wrote:

Yes, indeed, it mirrors the check from here
https://github.com/llvm/llvm-project/blob/82b95d0089bea67d1a06fa75d2a4b5e087563d6f/llvm/include/llvm/Passes/CodeGenPassBuilder.h#L836-L838
I think it would be better to create a new insert point in a separate PR?

https://github.com/llvm/llvm-project/pull/92844