private void simulateBlock(SsaBasicBlock block) {
    for (SsaInsn insn : block.getInsns()) {
      if (insn instanceof PhiInsn) {
        simulatePhi((PhiInsn) insn);
      } else {
        simulateStmt(insn);
      }
    }
  }
Simulate a block and note the results in the lattice.

@param block Block to visit
android/android_framework/dex-maker/src/main/java/com/android/dx/ssa/SCCP.java