Add the clang library to the repo (with some of my changes, too).

1 files changed, 165 insertions, 0 deletions

diff --git a/clang/test/Analysis/domtest.c b/clang/test/Analysis/domtest.c
new file mode 100644
index 0000000..245186a
--- /dev/null
+++ b/clang/test/Analysis/domtest.c
@@ -0,0 +1,165 @@
+// RUN: %clang -cc1 -analyze -analyzer-checker=debug.DumpDominators %s 2>&1 | FileCheck %s
+
+// Test the DominatorsTree implementation with various control flows
+int test1()
+{
+  int x = 6;
+  int y = x/2;
+  int z;
+
+  while(y > 0) {
+    if(y < x) {
+      x = x/y;
+      y = y-1;
+    }else{
+      z = x - y;
+    }
+    x = x - 1;
+    x = x - 1;
+  }
+  z = x+y;
+  z = 3;
+  return 0;
+}
+
+// CHECK: Immediate dominance tree (Node#,IDom#):
+// CHECK: (0,1)
+// CHECK: (1,2)
+// CHECK: (2,8)
+// CHECK: (3,4)
+// CHECK: (4,7)
+// CHECK: (5,7)
+// CHECK: (6,7)
+// CHECK: (7,2)
+// CHECK: (8,9)
+// CHECK: (9,9)
+
+int test2()
+{
+  int x,y,z;
+
+  x = 10; y = 100;
+  if(x > 0){
+    y = 1;
+  }else{
+    while(x<=0){
+      x++;
+      y++;
+    }
+  }
+  z = y;
+
+  return 0;
+}
+
+// CHECK: Immediate dominance tree (Node#,IDom#):
+// CHECK: (0,1)
+// CHECK: (1,6)
+// CHECK: (2,6)
+// CHECK: (3,4)
+// CHECK: (4,2)
+// CHECK: (5,6)
+// CHECK: (6,7)
+// CHECK: (7,7)
+
+int test3()
+{
+  int x,y,z;
+
+  x = y = z = 1;
+  if(x>0) {
+    while(x>=0){
+      while(y>=x) {
+        x = x-1;
+        y = y/2;
+      }
+    }
+  }
+  z = y;
+
+  return 0;
+}
+
+// CHECK: Immediate dominance tree (Node#,IDom#):
+// CHECK: (0,1)
+// CHECK: (1,7)
+// CHECK: (2,7)
+// CHECK: (3,4)
+// CHECK: (4,2)
+// CHECK: (5,6)
+// CHECK: (6,4)
+// CHECK: (7,8)
+// CHECK: (8,8)
+
+int test4()
+{
+  int y = 3;
+  while(y > 0) {
+    if(y < 3) {
+      while(y>0)
+        y ++;
+    }else{
+      while(y<10)
+        y ++;
+    }
+  }
+  return 0;
+}
+
+// CHECK: Immediate dominance tree (Node#,IDom#):
+// CHECK: (0,1)
+// CHECK: (1,2)
+// CHECK: (2,11)
+// CHECK: (3,10)
+// CHECK: (4,10)
+// CHECK: (5,6)
+// CHECK: (6,4)
+// CHECK: (7,10)
+// CHECK: (8,9)
+// CHECK: (9,7)
+// CHECK: (10,2)
+// CHECK: (11,12)
+// CHECK: (12,12)
+
+int test5()
+{
+  int x,y,z,a,b,c;
+  x = 1;
+  y = 2;
+  z = 3;
+  a = 4;
+  b = 5;
+  c = 6;
+  if ( x < 10 ) {
+     if ( y < 10 ) {
+        if ( z < 10 ) {
+           x = 4;
+        } else {
+           x = 5;
+        }
+        a = 10;
+     } else {
+       x = 6;
+     }
+     b = 10;
+  } else {
+    x = 7;
+  }
+  c = 11;
+  return 0;
+}
+
+// CHECK: Immediate dominance tree (Node#,IDom#):
+// CHECK: (0,1)
+// CHECK: (1,10)
+// CHECK: (2,10)
+// CHECK: (3,9)
+// CHECK: (4,9)
+// CHECK: (5,8)
+// CHECK: (6,8)
+// CHECK: (7,8)
+// CHECK: (8,9)
+// CHECK: (9,10)
+// CHECK: (10,11)
+// CHECK: (11,11)
+