additional test cases for floating point comparison splitting pass

4 files changed, 284 insertions, 0 deletions

diff --git a/test/test-fpExtra.sh b/test/test-fpExtra.sh
new file mode 100755
index 00000000..aecc6258
--- /dev/null
+++ b/test/test-fpExtra.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+. ./test-pre.sh
+
+test -e ../afl-clang-fast -a -e ../split-switches-pass.so && {
+  $ECHO "$GREY[*] llvm_mode laf-intel/compcov testing splitting floating point types with Nan, infinity, minusZero"
+  for testcase in ./test-fp_minusZerocases.c ./test-fp_Infcases.c ./test-fp_NaNcases.c; do
+  #for testcase in ./test-fp_cases.c ./test-fp_Infcases.c ./test-fp_NaNcases.c ./test-fp_minusZerocases.c ; do
+    for I in float double "long double"; do
+    #for I in double; do
+      for BITS in 64 32 16 8; do
+      #for BITS in 64; do
+        bin="$testcase-split-$I-$BITS.compcov" 
+#AFL_DONT_OPTIMIZE=1 AFL_LLVM_INSTRUMENT=AFL AFL_DEBUG=1 AFL_LLVM_LAF_SPLIT_COMPARES_BITW=$BITS AFL_LLVM_LAF_SPLIT_COMPARES=1 AFL_LLVM_LAF_SPLIT_FLOATS=1 ../afl-clang-fast -DFLOAT_TYPE="$I" -S "$testcase"
+#AFL_DONT_OPTIMIZE=1 AFL_LLVM_INSTRUMENT=AFL AFL_DEBUG=1 AFL_LLVM_LAF_SPLIT_COMPARES_BITW=$BITS AFL_LLVM_LAF_SPLIT_COMPARES=1 AFL_LLVM_LAF_SPLIT_FLOATS=1 ../afl-clang-fast -DFLOAT_TYPE="$I" -S -emit-llvm "$testcase"
+AFL_DONT_OPTIMIZE=1 AFL_LLVM_INSTRUMENT=AFL AFL_DEBUG=1 AFL_LLVM_LAF_SPLIT_COMPARES_BITW=$BITS AFL_LLVM_LAF_SPLIT_COMPARES=1 AFL_LLVM_LAF_SPLIT_FLOATS=1 ../afl-clang-fast -DFLOAT_TYPE="$I" -o "$bin" "$testcase" > test.out 2>&1;
+        if ! test -e "$bin"; then
+            cat test.out
+            $ECHO "$RED[!] llvm_mode laf-intel/compcov float splitting failed! ($testcase with type $I split to $BITS)!";
+            CODE=1
+            break
+        fi
+        if ! "$bin"; then
+            $ECHO "$RED[!] llvm_mode laf-intel/compcov float splitting resulted in miscompilation (type $I split to $BITS)!";
+            CODE=1
+            break
+        fi
+        rm -f "$bin" test.out || true
+      done
+    done
+  done
+  rm -f test-fp_cases*.compcov test.out
+
+} || {
+  $ECHO "$YELLOW[-] llvm_mode not compiled, cannot test"
+  INCOMPLETE=1
+}
+
+. ./test-post.sh
diff --git a/test/test-fp_Infcases.c b/test/test-fp_Infcases.c
new file mode 100644
index 00000000..88a89ead
--- /dev/null
+++ b/test/test-fp_Infcases.c
@@ -0,0 +1,124 @@
+/* test cases for floating point comparison transformations
+ * compile with -DFLOAT_TYPE=float
+ *          or  -DFLOAT_TYPE=double
+ *          or  -DFLOAT_TYPE="long double"
+ */
+
+#include <assert.h>
+#define _GNU_SOURCE
+#include <math.h> /* for NaNs and infinity values */
+
+int main() {
+
+  volatile FLOAT_TYPE a, b;
+
+#ifdef INFINITY
+  FLOAT_TYPE inf = (FLOAT_TYPE) INFINITY;
+#else
+  FLOAT_TYPE inf = 1.0 / 0.0; /* produces infinity */
+#endif
+  FLOAT_TYPE negZero = 1.0 / -inf;
+  FLOAT_TYPE posZero = 0.0;
+
+  /* plus infinity */
+  a = (1.0 / 0.0);	/* positive infinity */
+  b = (1.0 / 0.0);	/* positive infinity */
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  b = -(1.0 / 0.0);	/* negative infinity */
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a > b));
+  assert((a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 1.0 / -(1.0 / 0.0);	/* negative 0 */
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a > b));
+  assert((a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 0.0;	/* positive 0 */
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a > b));
+  assert((a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = -42.0;
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a > b));
+  assert((a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 42.0;
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a > b));
+  assert((a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  /* negative infinity */
+  a = -(1.0 / 0.0);	
+  b = (1.0 / 0.0);	/* positive infinity */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = -(1.0 / 0.0);	/* negative infinity */
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  b = 1.0 / -(1.0 / 0.0);	/* negative 0 */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 0.0;	/* positive 0 */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = -42.0;
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 42.0;
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+}
+
diff --git a/test/test-fp_NaNcases.c b/test/test-fp_NaNcases.c
new file mode 100644
index 00000000..78d32711
--- /dev/null
+++ b/test/test-fp_NaNcases.c
@@ -0,0 +1,86 @@
+/* test cases for floating point comparison transformations
+ * compile with -DFLOAT_TYPE=float
+ *          or  -DFLOAT_TYPE=double
+ *          or  -DFLOAT_TYPE="long double"
+ */
+
+#include <assert.h>
+#define _GNU_SOURCE
+#include <math.h> /* for NaNs and infinity values */
+
+int main() {
+
+  volatile FLOAT_TYPE a, b;
+
+  /* NaN */
+#ifdef NAN
+  a = (FLOAT_TYPE) NAN; /* produces NaN */
+#else
+  a = 0.0 / 0.0; /* produces NaN */
+#endif
+#ifdef INFINITY
+  FLOAT_TYPE inf = (FLOAT_TYPE) INFINITY;
+#else
+  FLOAT_TYPE inf = 1.0 / 0.0; /* produces infinity */
+#endif
+  FLOAT_TYPE negZero = 1.0 / -inf;
+  FLOAT_TYPE posZero = 0.0;
+  b = a;
+
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 0.0;
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 1.0 / -(1.0 / 0.0);	/* negative 0 */
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = 42.0;
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = -42.0;
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = (1.0 / 0.0);	/* positive infinity */
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  b = -(1.0 / 0.0);	/* negative infinity */
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+}
+
diff --git a/test/test-fp_minusZerocases.c b/test/test-fp_minusZerocases.c
new file mode 100644
index 00000000..00beef2e
--- /dev/null
+++ b/test/test-fp_minusZerocases.c
@@ -0,0 +1,35 @@
+/* test cases for floating point comparison transformations
+ * compile with -DFLOAT_TYPE=float
+ *          or  -DFLOAT_TYPE=double
+ *          or  -DFLOAT_TYPE="long double"
+ */
+
+#include <assert.h>
+#define _GNU_SOURCE
+#include <math.h> /* for NaNs and infinity values */
+
+int main() {
+
+  volatile FLOAT_TYPE a, b;
+
+  /* negative zero */
+  a = 1.0 / -(1.0 / 0.0);	/* negative 0 */
+  b = 0.0;	/* positive 0 */
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = 1.0 / -(1.0 / 0.0);	/* negative 0 */
+  b = 1.0 / -(1.0 / 0.0);	/* negative 0 */
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+}
+