Account for UpperVector saves in minRegs (#31773)

When we use a jitStressRegs mode that limits the number of registers, we need to account for the UpperVectorSave. Fix #31727
dotnet · Feb 5, 2020 · 516956a · 516956a
1 parent 1518782
commit 516956a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/coreclr/src/jit/lsrabuild.cpp b/src/coreclr/src/jit/lsrabuild.cpp
@@ -1627,6 +1627,12 @@ void LinearScan::buildRefPositionsForNode(GenTree* tree, BasicBlock* block, Lsra
                 {
                     minRegCount++;
                 }
+#if FEATURE_PARTIAL_SIMD_CALLEE_SAVE
+                else if (newRefPosition->refType == RefTypeUpperVectorSave)
+                {
+                    minRegCount++;
+                }
+#endif
                 if (newRefPosition->getInterval()->isSpecialPutArg)
                 {
                     minRegCount++;