setInternalRegsDelayFree only for candidate lclVars (dotnet#62884)

erlimar · Dec 17, 2021 · a3aec10 · a3aec10
1 parent dda44e1
commit a3aec10
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/src/coreclr/jit/lsrabuild.cpp b/src/coreclr/jit/lsrabuild.cpp
@@ -3465,8 +3465,12 @@ int LinearScan::BuildStoreLoc(GenTreeLclVarCommon* storeLoc)
             {
                 // Need an additional register to create a SIMD8 from EAX/EDX without SSE4.1.
                 buildInternalFloatRegisterDefForNode(storeLoc, allSIMDRegs());
-                // This internal register must be different from the target register.
-                setInternalRegsDelayFree = true;
+
+                if (isCandidateVar(varDsc))
+                {
+                    // This internal register must be different from the target register.
+                    setInternalRegsDelayFree = true;
+                }
             }
         }
 #endif // FEATURE_SIMD && TARGET_X86