Add regression tests for iload, dup, dup_x1, dup_x2

Author: Matthias Güdemann

regression/cbmc-java/stack_var1/stack_test.class

@@ -0,0 +1,7 @@
+public class stack_test {
+  public static void main(String[] args) {
+    stack_var1 s = new stack_var1();
+    int n = s.f(1);
+    assert(n==0);
+  }
+}

regression/cbmc-java/stack_var1/stack_test.java

@@ -0,0 +1,22 @@
+.class public stack_var1
+.super java/lang/Object
+
+.method public <init>()V
+   aload_0
+   invokenonvirtual java/lang/Object/<init>()V
+   return
+.end method
+
+.method public f(I)I
+   .limit stack 2
+   .limit locals 2
+
+   ;; copy of arg on stack
+   iload_1
+   ;; increment arg
+   iinc 1 1
+   ;; incremented copy on stack
+   iload_1
+   isub
+   ireturn
+.end method

regression/cbmc-java/stack_var1/stack_var1.class

@@ -0,0 +1,9 @@
+CORE
+stack_test.class
+
+^EXIT=10$
+^SIGNAL=0$
+^.*assertion at file stack_test.java line 5 function.*: FAILURE$
+^VERIFICATION FAILED$
+--
+^warning: ignoring

regression/cbmc-java/stack_var1/stack_var1.j

@@ -0,0 +1,7 @@
+public class stack_test {
+  public static void main(String[] args) {
+    stack_var2 s = new stack_var2();
+    int n = s.f(1);
+    assert(n==0);
+  }
+}

regression/cbmc-java/stack_var1/test.desc

@@ -0,0 +1,25 @@
+.class public stack_var2
+.super java/lang/Object
+
+.method public <init>()V
+   aload_0
+   invokenonvirtual java/lang/Object/<init>()V
+   return
+.end method
+
+.method public f(I)I
+   .limit stack 3
+   .limit locals 2
+
+   ;; push local var1
+   iload_1
+   ;; duplicate
+   dup
+   ;; increment local var1
+   iinc 1 1
+   ;; push local var1
+   iload_1
+   isub
+   ;; incremented copy on stack
+   ireturn
+.end method

regression/cbmc-java/stack_var2/stack_test.class

@@ -0,0 +1,9 @@
+CORE
+stack_test.class
+
+^EXIT=10$
+^SIGNAL=0$
+^.*assertion at file stack_test.java line 5 function.*: FAILURE$
+^VERIFICATION FAILED$
+--
+^warning: ignoring

regression/cbmc-java/stack_var2/stack_test.java

@@ -0,0 +1,7 @@
+public class stack_test {
+  public static void main(String[] args) {
+    stack_var3 s = new stack_var3();
+    int n = s.f();
+    assert(n==0);
+  }
+}

regression/cbmc-java/stack_var2/stack_var2.class

@@ -0,0 +1,33 @@
+.class public stack_var3
+.super java/lang/Object
+
+.method public <init>()V
+   aload_0
+   invokenonvirtual java/lang/Object/<init>()V
+   return
+.end method
+
+.method public f()I
+   .limit stack 5
+   .limit locals 3
+
+   ;; 1->var1
+   ;; 0->var2
+   iconst_1
+   istore_1
+   iconst_0
+   istore_2
+   ;; push local var2 / var1
+   iload_2
+   iload_1
+   ;; dup var1
+   dup_x1
+   ;; sub one from var1
+   iinc 1 -1
+   ;; pop first var1
+   pop
+   ;; sub
+   isub
+   ;; incremented copy on stack
+   ireturn
+.end method

regression/cbmc-java/stack_var2/stack_var2.j

@@ -0,0 +1,9 @@
+CORE
+stack_test.class
+
+^EXIT=10$
+^SIGNAL=0$
+^.*assertion at file stack_test.java line 5 function.*: FAILURE$
+^VERIFICATION FAILED$
+--
+^warning: ignoring

regression/cbmc-java/stack_var2/test.desc

@@ -0,0 +1,7 @@
+public class stack_test {
+  public static void main(String[] args) {
+    stack_var4 s = new stack_var4();
+    int n = s.f();
+    assert(n==0);
+  }
+}

regression/cbmc-java/stack_var3/stack_test.class

@@ -0,0 +1,37 @@
+.class public stack_var4
+.super java/lang/Object
+
+.method public <init>()V
+   aload_0
+   invokenonvirtual java/lang/Object/<init>()V
+   return
+.end method
+
+.method public f()I
+   .limit stack 5
+   .limit locals 4
+
+   ;; 0->var1
+   ;; 1->var2
+   ;; 2->var3
+   iconst_0
+   istore_1
+   iconst_1
+   istore_2
+   iconst_2
+   istore_3
+
+   ;; push local var3 / var2 / var1
+   iload_3
+   iload_2
+   iload_1
+   ;; push var1 in front of var3
+   dup_x2
+   ;; add one to local var 1
+   iinc 1 1
+   pop
+   pop
+   pop
+   ;; incremented copy on stack
+   ireturn
+.end method

regression/cbmc-java/stack_var3/stack_test.java

@@ -0,0 +1,10 @@
+CORE
+stack_test.class
+
+^EXIT=0$
+^SIGNAL=0$
+^.*assertion at file stack_test.java line 5 function.*: SUCCESS
+$
+^VERIFICATION SUCCESSFUL$
+--
+^warning: ignoring