[llvm] MCExpr-ify SIProgramInfo (PR #88257)

[Matt Arsenault via llvm-commits]

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@@ -462,6 +464,16 @@ MetadataStreamerMsgPackV4::getHSAKernelProps(const MachineFunction &MF,
   const SIMachineFunctionInfo &MFI = *MF.getInfo<SIMachineFunctionInfo>();
   const Function &F = MF.getFunction();
 
+  auto GetMCExprValue = [&MF](const MCExpr *Value) {
+    int64_t Val;
+    if (!Value->evaluateAsAbsolute(Val)) {
+      MCContext &Ctx = MF.getContext();
+      Ctx.reportError(SMLoc(), "Could not resolve MCExpr when required.");
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arsenm wrote:

Missing test that hits this? Can this message be more specific? 

https://github.com/llvm/llvm-project/pull/88257