StmtReductionOpportunities extends ReductionOpportunitiesBase<StmtReductionOpportunity> { static boolean isLiveCodeInjection(Stmt stmt) { if (stmt instanceof ExprStmt) { return isSimpleLiveCodeInjection((ExprStmt) stmt); } if (stmt instanceof IfStmt) { return refersDirectlyToLiveInjectedVariable(((IfStmt) stmt).getCondition()); } if (stmt instanceof SwitchStmt) { return refersDirectlyToLiveInjectedVariable(((SwitchStmt) stmt).getExpr()); } if (stmt instanceof ForStmt) { final ForStmt forStmt = (ForStmt) stmt; if (forStmt.hasIncrement() && refersDirectlyToLiveInjectedVariable(forStmt.getIncrement())) { return true; } if (forStmt.hasCondition() && refersDirectlyToLiveInjectedVariable(forStmt.getCondition())) { return true; } return isLiveCodeInjection(forStmt.getInit()); } else if (stmt instanceof LoopStmt) { return refersDirectlyToLiveInjectedVariable(((LoopStmt) stmt).getCondition()); } return false; } private  StmtReductionOpportunities(TranslationUnit tu,
        ReducerContext context);   }
@Test public void testIdentifyLiveCodeProperly() throws Exception { final String liveInjectedVariableName = Constants.LIVE_PREFIX + "somevar"; final String nonLiveInjectedVariableName = "x"; final String program = "" + "void main() {" + " float x;" + " float " + liveInjectedVariableName + ";\n" + " " + liveInjectedVariableName + " = 2.0;\n" + " " + nonLiveInjectedVariableName + " = " + Constants.GLF_FUZZED + "(" + liveInjectedVariableName + ");\n" + " " + liveInjectedVariableName + " += 2.0;\n" + " " + nonLiveInjectedVariableName + " += 2.0;\n" + " " + liveInjectedVariableName + " *= 2.0;\n" + " " + nonLiveInjectedVariableName + " *= 2.0;\n" + " " + liveInjectedVariableName + " -= 2.0;\n" + " " + nonLiveInjectedVariableName + " -= 2.0;\n" + " " + liveInjectedVariableName + " /= 2.0;\n" + " " + nonLiveInjectedVariableName + " /= 2.0;\n" + " " + liveInjectedVariableName + "++;\n" + " " + nonLiveInjectedVariableName + "++;\n" + " " + liveInjectedVariableName + "--;" + " " + nonLiveInjectedVariableName + "--;\n" + " ++" + liveInjectedVariableName + ";\n" + " ++" + nonLiveInjectedVariableName + ";\n" + " --" + liveInjectedVariableName + ";\n" + " --" + nonLiveInjectedVariableName + ";\n" + " {" + " for (" + liveInjectedVariableName + " = 1.0; ; ) { }\n" + " for (" + nonLiveInjectedVariableName + " = 1.0; " + liveInjectedVariableName + " < " + nonLiveInjectedVariableName + "; ) { }\n" + " for (" + nonLiveInjectedVariableName + " = 1.0; " + nonLiveInjectedVariableName + " < " + nonLiveInjectedVariableName + "; " + liveInjectedVariableName + ") { }\n" + " while (" + liveInjectedVariableName + " < 10.0) { }\n" + " do { } while (" + liveInjectedVariableName + " < 10.0);\n" + " switch (int(" + liveInjectedVariableName + ")) { default: break; }\n" + " for (" + nonLiveInjectedVariableName + " = 1.0; ; ) { }" + " for (" + nonLiveInjectedVariableName + " = 1.0; " + nonLiveInjectedVariableName + " < " + nonLiveInjectedVariableName + "; ) { }\n" + " for (" + nonLiveInjectedVariableName + " = 1.0; " + nonLiveInjectedVariableName + " < " + nonLiveInjectedVariableName + "; " + nonLiveInjectedVariableName + ") { }\n" + " while (" + nonLiveInjectedVariableName + " < 10.0) { }\n" + " do { } while (" + nonLiveInjectedVariableName + " < 10.0);\n" + " switch (int(" + nonLiveInjectedVariableName + ")) { default: break; }\n" + " }\n" + "}\n"; final TranslationUnit tu = ParseHelper.parse(program); final List<Stmt> stmtsInMain = tu.getMainFunction().getBody().getStmts(); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(0))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(1))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(2))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(3))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(4))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(5))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(6))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(7))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(8))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(9))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(10))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(11))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(12))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(13))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(14))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(15))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(16))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(17))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(18))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(19))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInMain.get(20))); List<Stmt> stmtsInBlock = ((BlockStmt) stmtsInMain.get(20)).getStmts(); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(0))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(1))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(2))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(3))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(4))); assertTrue(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(5))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(6))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(7))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(8))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(9))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(10))); assertFalse(StmtReductionOpportunities.isLiveCodeInjection(stmtsInBlock.get(11))); }