Add Om1 lowering with no optimizations

crosstest/test_fcmp_main.cpp

+// abtest.py --test=test_fcmp.pnacl.ll --driver=test_fcmp_main.cpp --prefix=Subzero_ --output=test_fcmp
+
+#include <stdio.h>
+#include <float.h>
+#include <math.h>
+#include <assert.h>
+
+extern "C" {
+
+bool fcmpFalseFloat(float a, float b);
+bool fcmpOeqFloat(float a, float b);
+bool fcmpOgtFloat(float a, float b);
+bool fcmpOgeFloat(float a, float b);
+bool fcmpOltFloat(float a, float b);
+bool fcmpOleFloat(float a, float b);
+bool fcmpOneFloat(float a, float b);
+bool fcmpOrdFloat(float a, float b);
+bool fcmpUeqFloat(float a, float b);
+bool fcmpUgtFloat(float a, float b);
+bool fcmpUgeFloat(float a, float b);
+bool fcmpUltFloat(float a, float b);
+bool fcmpUleFloat(float a, float b);
+bool fcmpUneFloat(float a, float b);
+bool fcmpUnoFloat(float a, float b);
+bool fcmpTrueFloat(float a, float b);
+
+bool fcmpFalseDouble(double a, double b);
+bool fcmpOeqDouble(double a, double b);
+bool fcmpOgtDouble(double a, double b);
+bool fcmpOgeDouble(double a, double b);
+bool fcmpOltDouble(double a, double b);
+bool fcmpOleDouble(double a, double b);
+bool fcmpOneDouble(double a, double b);
+bool fcmpOrdDouble(double a, double b);
+bool fcmpUeqDouble(double a, double b);
+bool fcmpUgtDouble(double a, double b);
+bool fcmpUgeDouble(double a, double b);
+bool fcmpUltDouble(double a, double b);
+bool fcmpUleDouble(double a, double b);
+bool fcmpUneDouble(double a, double b);
+bool fcmpUnoDouble(double a, double b);
+bool fcmpTrueDouble(double a, double b);
+
+bool Subzero_fcmpFalseFloat(float a, float b);
+bool Subzero_fcmpOeqFloat(float a, float b);
+bool Subzero_fcmpOgtFloat(float a, float b);
+bool Subzero_fcmpOgeFloat(float a, float b);
+bool Subzero_fcmpOltFloat(float a, float b);
+bool Subzero_fcmpOleFloat(float a, float b);
+bool Subzero_fcmpOneFloat(float a, float b);
+bool Subzero_fcmpOrdFloat(float a, float b);
+bool Subzero_fcmpUeqFloat(float a, float b);
+bool Subzero_fcmpUgtFloat(float a, float b);
+bool Subzero_fcmpUgeFloat(float a, float b);
+bool Subzero_fcmpUltFloat(float a, float b);
+bool Subzero_fcmpUleFloat(float a, float b);
+bool Subzero_fcmpUneFloat(float a, float b);
+bool Subzero_fcmpUnoFloat(float a, float b);
+bool Subzero_fcmpTrueFloat(float a, float b);
+
+bool Subzero_fcmpFalseDouble(double a, double b);
+bool Subzero_fcmpOeqDouble(double a, double b);
+bool Subzero_fcmpOgtDouble(double a, double b);
+bool Subzero_fcmpOgeDouble(double a, double b);
+bool Subzero_fcmpOltDouble(double a, double b);
+bool Subzero_fcmpOleDouble(double a, double b);
+bool Subzero_fcmpOneDouble(double a, double b);
+bool Subzero_fcmpOrdDouble(double a, double b);
+bool Subzero_fcmpUeqDouble(double a, double b);
+bool Subzero_fcmpUgtDouble(double a, double b);
+bool Subzero_fcmpUgeDouble(double a, double b);
+bool Subzero_fcmpUltDouble(double a, double b);
+bool Subzero_fcmpUleDouble(double a, double b);
+bool Subzero_fcmpUneDouble(double a, double b);
+bool Subzero_fcmpUnoDouble(double a, double b);
+bool Subzero_fcmpTrueDouble(double a, double b);
+}
+
+int main(int argc, char **argv) {
+  static const float FloatNegInf = -1.0 / 0.0;
+  static const float FloatZero = 0.0;
+  static const float FloatTen = 10.0;
+  static const float FloatPosInf = 1.0 / 0.0;
+  static const float FloatNan = 0.0 / 0.0;
+  assert(fpclassify(FloatNegInf) == FP_INFINITE);
+  assert(fpclassify(FloatPosInf) == FP_INFINITE);
+  assert(fpclassify(FloatNan) == FP_NAN);
+  assert(FloatNegInf < FloatZero);
+  assert(FloatNegInf < FloatPosInf);
+  assert(FloatZero < FloatPosInf);
+
+  static const double DoubleNegInf = -1.0 / 0.0;
+  static const double DoubleZero = 0.0;
+  static const double DoubleTen = 10.0;
+  static const double DoublePosInf = 1.0 / 0.0;
+  static const double DoubleNan = 0.0 / 0.0;
+  assert(fpclassify(DoubleNegInf) == FP_INFINITE);
+  assert(fpclassify(DoublePosInf) == FP_INFINITE);
+  assert(fpclassify(DoubleNan) == FP_NAN);
+  assert(DoubleNegInf < DoubleZero);
+  assert(DoubleNegInf < DoublePosInf);
+  assert(DoubleZero < DoublePosInf);
+
+  static float FloatValues[] = { FloatNegInf, FloatZero,   FLT_MIN,  FloatTen,
+                                 FLT_MAX,     FloatPosInf, FloatNan, };
+  const static unsigned NumFloatValues =
+      sizeof(FloatValues) / sizeof(*FloatValues);
+
+  static double DoubleValues[] = { DoubleNegInf, DoubleZero, DBL_MIN,
+                                   DoubleTen,    DBL_MAX,    DoublePosInf,
+                                   DoubleNan, };
+  const static unsigned NumDoubleValues =
+      sizeof(DoubleValues) / sizeof(*DoubleValues);
+
+  typedef bool (*FuncTypeFloat)(float, float);
+  static struct {
+    const char *Name;
+    FuncTypeFloat FuncSz;
+    FuncTypeFloat FuncLlc;
+  } FuncFloat[] = {
+      { "fcmpFalseFloat", Subzero_fcmpFalseFloat, fcmpFalseFloat },
+      { "fcmpOeqFloat", Subzero_fcmpOeqFloat, fcmpOeqFloat },
+      { "fcmpOgtFloat", Subzero_fcmpOgtFloat, fcmpOgtFloat },
+      { "fcmpOgeFloat", Subzero_fcmpOgeFloat, fcmpOgeFloat },
+      { "fcmpOltFloat", Subzero_fcmpOltFloat, fcmpOltFloat },
+      { "fcmpOleFloat", Subzero_fcmpOleFloat, fcmpOleFloat },
+      { "fcmpOneFloat", Subzero_fcmpOneFloat, fcmpOneFloat },
+      { "fcmpOrdFloat", Subzero_fcmpOrdFloat, fcmpOrdFloat },
+      { "fcmpUeqFloat", Subzero_fcmpUeqFloat, fcmpUeqFloat },
+      { "fcmpUgtFloat", Subzero_fcmpUgtFloat, fcmpUgtFloat },
+      { "fcmpUgeFloat", Subzero_fcmpUgeFloat, fcmpUgeFloat },
+      { "fcmpUltFloat", Subzero_fcmpUltFloat, fcmpUltFloat },
+      { "fcmpUleFloat", Subzero_fcmpUleFloat, fcmpUleFloat },
+      { "fcmpUneFloat", Subzero_fcmpUneFloat, fcmpUneFloat },
+      { "fcmpUnoFloat", Subzero_fcmpUnoFloat, fcmpUnoFloat },
+      { "fcmpTrueFloat", Subzero_fcmpTrueFloat, fcmpTrueFloat },
+    };
+  const static unsigned NumFuncFloat = sizeof(FuncFloat) / sizeof(*FuncFloat);
+
+  typedef bool (*FuncTypeDouble)(double, double);
+  static struct {
+    const char *Name;
+    FuncTypeDouble FuncSz;
+    FuncTypeDouble FuncLlc;
+  } FuncDouble[] = {
+      { "fcmpFalseDouble", Subzero_fcmpFalseDouble, fcmpFalseDouble },
+      { "fcmpOeqDouble", Subzero_fcmpOeqDouble, fcmpOeqDouble },
+      { "fcmpOgtDouble", Subzero_fcmpOgtDouble, fcmpOgtDouble },
+      { "fcmpOgeDouble", Subzero_fcmpOgeDouble, fcmpOgeDouble },
+      { "fcmpOltDouble", Subzero_fcmpOltDouble, fcmpOltDouble },
+      { "fcmpOleDouble", Subzero_fcmpOleDouble, fcmpOleDouble },
+      { "fcmpOneDouble", Subzero_fcmpOneDouble, fcmpOneDouble },
+      { "fcmpOrdDouble", Subzero_fcmpOrdDouble, fcmpOrdDouble },
+      { "fcmpUeqDouble", Subzero_fcmpUeqDouble, fcmpUeqDouble },
+      { "fcmpUgtDouble", Subzero_fcmpUgtDouble, fcmpUgtDouble },
+      { "fcmpUgeDouble", Subzero_fcmpUgeDouble, fcmpUgeDouble },
+      { "fcmpUltDouble", Subzero_fcmpUltDouble, fcmpUltDouble },
+      { "fcmpUleDouble", Subzero_fcmpUleDouble, fcmpUleDouble },
+      { "fcmpUneDouble", Subzero_fcmpUneDouble, fcmpUneDouble },
+      { "fcmpUnoDouble", Subzero_fcmpUnoDouble, fcmpUnoDouble },
+      { "fcmpTrueDouble", Subzero_fcmpTrueDouble, fcmpTrueDouble },
+    };
+  const static unsigned NumFuncDouble =
+      sizeof(FuncDouble) / sizeof(*FuncDouble);
+
+  bool ResultSz, ResultLlc;
+
+  unsigned TotalTests = 0;
+  unsigned Passes = 0;
+  unsigned Failures = 0;
+
+  for (unsigned f = 0; f < NumFuncFloat; ++f) {
+    for (unsigned i = 0; i < NumFloatValues; ++i) {
+      for (unsigned j = 0; j < NumFloatValues; ++j) {
+        ++TotalTests;
+        ResultSz = FuncFloat[f].FuncSz(FloatValues[i], FloatValues[j]);
+        ResultLlc = FuncFloat[f].FuncLlc(FloatValues[i], FloatValues[j]);
+        if (ResultSz == ResultLlc) {
+          ++Passes;
+        } else {
+          ++Failures;
+          printf("%s(%g, %g): sz=%d llc=%d\n", FuncFloat[f].Name,
+                 FloatValues[i], FloatValues[j], ResultSz, ResultLlc);
+        }
+      }
+    }
+  }
+
+  for (unsigned f = 0; f < NumFuncDouble; ++f) {
+    for (unsigned i = 0; i < NumDoubleValues; ++i) {
+      for (unsigned j = 0; j < NumDoubleValues; ++j) {
+        ++TotalTests;
+        ResultSz = FuncDouble[f].FuncSz(DoubleValues[i], DoubleValues[j]);
+        ResultLlc = FuncDouble[f].FuncLlc(DoubleValues[i], DoubleValues[j]);
+        if (ResultSz == ResultLlc) {
+          ++Passes;
+        } else {
+          ++Failures;
+          printf("%s(%g, %g): sz=%d llc=%d\n", FuncDouble[f].Name,
+                 DoubleValues[i], DoubleValues[j], ResultSz, ResultLlc);
+        }
+      }
+    }
+  }
+
+  printf("TotalTests=%u Passes=%u Failures=%u\n", TotalTests, Passes, Failures);
+  return Failures;
+}