[llvm-branch-commits] [llvm] [CodeGen][NPM] Read TargetMachine's EnableIPRA option (PR #138670)

[Matt Arsenault via llvm-branch-commits]

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@@ -172,6 +172,10 @@ template <typename DerivedT, typename TargetMachineT> class CodeGenPassBuilder {
     // LLVMTM ctor. See TargetMachine::setGlobalISel for example.
     if (Opt.EnableIPRA)
       TM.Options.EnableIPRA = *Opt.EnableIPRA;
+    else {
+      // If not explicitly specified, use target default.
+      TM.Options.EnableIPRA |= TM.useIPRA();
+    }
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arsenm wrote:

I think we should delete TargetMachine::useIPRA, and only use TargetOptions.EnableIPRA. That's how the target selection of globalisel and some of these other globals work already 

https://github.com/llvm/llvm-project/pull/138670