3 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr107195-1.c b/gcc/testsuite/gcc.dg/tree-ssa/pr107195-1.c
new file mode 100644
index 0000000..a0c20db
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr107195-1.c
@@ -0,0 +1,15 @@
+// { dg-do run }
+// { dg-options "-O1 -fno-tree-ccp" }
+
+int a, b;
+int main() {
+  int c = 0;
+  if (a)
+    c = 1;
+  c = 1 & (a && c) && b;
+  if (a) {
+    b = c;
+    __builtin_abort ();
+  }
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr107195-2.c b/gcc/testsuite/gcc.dg/tree-ssa/pr107195-2.c
new file mode 100644
index 0000000..d447c78
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr107195-2.c
@@ -0,0 +1,16 @@
+// { dg-do run }
+// { dg-options "-O1" }
+
+int a, b;
+int main() {
+  int c = 0;
+  long d;
+  for (; b < 1; b++) {
+    (c && d) & 3 || a;
+    d = c;
+    c = -1;
+    if (d)
+      __builtin_abort();
+  }
+  return 0;
+}
diff --git a/gcc/value-range.cc b/gcc/value-range.cc
index a14f9bc..e07d2aa 100644
--- a/gcc/value-range.cc
+++ b/gcc/value-range.cc
@@ -2903,6 +2903,11 @@ irange::set_range_from_nonzero_bits ()
 	}
       return true;
     }
+  else if (popcount == 0)
+    {
+      set_zero (type ());
+      return true;
+    }
   return false;
 }