src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64Move.java

*** 696,706 ****
                  // flags and interfere with the Jcc.
                  if (input.isNull()) {
                      if (crb.mustReplaceWithNullRegister(input)) {
                          masm.movq(result, crb.nullRegister);
                      } else {
!                         masm.movq(result, 0x0L);
                      }
                  } else if (crb.target.inlineObjects) {
                      crb.recordInlineDataInCode(input);
                      masm.movq(result, 0xDEADDEADDEADDEADL, true);
                  } else {
--- 696,706 ----
                  // flags and interfere with the Jcc.
                  if (input.isNull()) {
                      if (crb.mustReplaceWithNullRegister(input)) {
                          masm.movq(result, crb.nullRegister);
                      } else {
!                         masm.movslq(result, 0);
                      }
                  } else if (crb.target.inlineObjects) {
                      crb.recordInlineDataInCode(input);
                      masm.movq(result, 0xDEADDEADDEADDEADL, true);
                  } else {