[JIT/x86] Fix LinearScan::allocateRegisters (dotnet/coreclr#26649)

Check for `lvLRACandidate` instead of `!lvDoNotEnregister` when checking whether `this` may be enregistered and has an Interval.

Commit migrated from https://github.com/dotnet/coreclr/commit/e41d8f0390323bba033a1ace2570c1099cf7443b

diff --git a/src/coreclr/src/jit/lsra.cpp b/src/coreclr/src/jit/lsra.cpp
index 59969ac..0eef8b5 100644 (file)
--- a/src/coreclr/src/jit/lsra.cpp
+++ b/src/coreclr/src/jit/lsra.cpp
@@ -5858,7 +5858,7 @@ void LinearScan::allocateRegisters()
     if (enregisterLocalVars && compiler->lvaKeepAliveAndReportThis())
     {
         LclVarDsc* thisVarDsc = compiler->lvaGetDesc(compiler->info.compThisArg);
-        if (!thisVarDsc->lvDoNotEnregister)
+        if (thisVarDsc->lvLRACandidate)
         {
             Interval* interval = getIntervalForLocalVar(thisVarDsc->lvVarIndex);
             if (interval->isSplit)