[llvm] InstrProf: Mark BiasLI as invariant. (PR #95588)

[NAKAMURA Takumi via llvm-commits]

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@@ -930,23 +930,8 @@ Value *InstrLowerer::getCounterAddress(InstrProfCntrInstBase *I) {
   LoadInst *&BiasLI = FunctionToProfileBiasMap[Fn];
   if (!BiasLI) {
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chapuni wrote:

@ellishg I've confirmed it works fine if `FunctionToProfileBiasMap` is eliminated and make this load in-place, since redundant `BiasLI` is optimized out.
Do you think this shall be preserved? (6e23cd2bf073ab5eb5a103b935af54046d007c52)

https://github.com/llvm/llvm-project/pull/95588