[arm64][turbofan] Fix add+shr for big shift values.

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index 8518b014eb0933e1fadcf72b20c411fcf6b29b4a..1bcc8dc06437167f6375c53d0258dee3f6ef351f 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -436,14 +436,18 @@ void VisitBinop(InstructionSelector* selector, Node* node,
     Matcher m_shift(right_node);
     inputs[input_count++] = g.UseRegisterOrImmediateZero(left_node);
     inputs[input_count++] = g.UseRegister(m_shift.left().node());
-    inputs[input_count++] = g.UseImmediate(m_shift.right().node());
+    // We only need at most the last 6 bits of the shift.
+    inputs[input_count++] =
+        g.UseImmediate(static_cast<int>(m_shift.right().Value() & 0x3F));
   } else if (can_commute && TryMatchAnyShift(selector, node, left_node, &opcode,
                                              !is_add_sub)) {
     if (must_commute_cond) cont->Commute();
     Matcher m_shift(left_node);
     inputs[input_count++] = g.UseRegisterOrImmediateZero(right_node);
     inputs[input_count++] = g.UseRegister(m_shift.left().node());
-    inputs[input_count++] = g.UseImmediate(m_shift.right().node());
+    // We only need at most the last 6 bits of the shift.
+    inputs[input_count++] =
+        g.UseImmediate(static_cast<int>(m_shift.right().Value() & 0x3F));
   } else {
     inputs[input_count++] = g.UseRegisterOrImmediateZero(left_node);
     inputs[input_count++] = g.UseRegister(right_node);