[llvm] [CodeGen] Use BasicBlock numbers to map to MBBs (PR #101883)

[Nikita Popov via llvm-commits]

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@@ -3832,7 +3832,8 @@ static bool checkForMustTailInVarArgFn(bool IsVarArg, const BasicBlock &BB) {
 
 bool IRTranslator::runOnMachineFunction(MachineFunction &CurMF) {
   MF = &CurMF;
-  const Function &F = MF->getFunction();
+  Function &F = MF->getFunction();
+  F.renumberBlocks(); // renumber blocks for dense values
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nikic wrote:

Well, I guess this will just get handled when actually enabling the use of IR BB numbers in DT.

https://github.com/llvm/llvm-project/pull/101883