Index: lib/Transform/ScheduleOptimizer.cpp
===================================================================
--- lib/Transform/ScheduleOptimizer.cpp
+++ lib/Transform/ScheduleOptimizer.cpp
@@ -140,6 +140,26 @@
                             cl::Hidden, cl::ZeroOrMore, cl::CommaSeparated,
                             cl::cat(PollyCategory));
 
+static cl::opt<int> DefaultCacheLevelAssociativity(
+    "polly-target-default-cache-level-associativity",
+    cl::desc("The default cache level associativity (if not enough were "
+             "provided by --polly-target-cache-level-associativity)."),
+    cl::Hidden, cl::init(8), cl::ZeroOrMore, cl::cat(PollyCategory));
+
+static cl::opt<int> DefaultFirstCacheLevelSize(
+    "polly-target-first-cache-level-size",
+    cl::desc(
+        "The default size of the first cache level specified in bytes (if not "
+        "enough were provided by --polly-target-cache-level-sizes)."),
+    cl::Hidden, cl::ZeroOrMore, cl::init(32768), cl::cat(PollyCategory));
+
+static cl::opt<int> DefaultSecondCacheLevelSize(
+    "polly-target-second-cache-level-size",
+    cl::desc(
+        "The default size of the second cache level specified in bytes (if "
+        "not enough were provided by --polly-target-cache-level-sizes)."),
+    cl::Hidden, cl::ZeroOrMore, cl::init(262144), cl::cat(PollyCategory));
+
 static cl::list<int> CacheLevelSizes(
     "polly-target-cache-level-sizes",
     cl::desc("The size of each cache level specified in bytes."), cl::Hidden,
@@ -606,27 +626,34 @@
 /// @see MicroKernelParamsTy
 static struct MacroKernelParamsTy
 getMacroKernelParams(const MicroKernelParamsTy &MicroKernelParams) {
+  // The quotient should be greater than zero.
+  if (!(MicroKernelParams.Mr > 0 && MicroKernelParams.Nr > 0 &&
+        PollyPatternMatchingNcQuotient > 0))
+    return {1, 1, 1};
+
   // According to www.cs.utexas.edu/users/flame/pubs/TOMS-BLIS-Analytical.pdf,
   // it requires information about the first two levels of a cache to determine
   // all the parameters of a macro-kernel. It also checks that an associativity
-  // degree of a cache level is greater than two. Otherwise, another algorithm
-  // for determination of the parameters should be used.
-  if (!(MicroKernelParams.Mr > 0 && MicroKernelParams.Nr > 0 &&
-        CacheLevelSizes.size() >= 2 && CacheLevelAssociativity.size() >= 2 &&
-        CacheLevelSizes[0] > 0 && CacheLevelSizes[1] > 0 &&
-        CacheLevelAssociativity[0] > 2 && CacheLevelAssociativity[1] > 2))
-    return {1, 1, 1};
-  // The quotient should be greater than zero.
-  if (PollyPatternMatchingNcQuotient <= 0)
-    return {1, 1, 1};
+  // degree of a cache level is greater than two. Otherwise, the default values
+  // are used. Since there is no typical values of this parameters, we use the
+  // parameters of Intel Core i7-3820 SandyBridge that also help to attain the
+  // high-performance on IBM POWER System S822 and IBM Power 730 Express server.
+  int Associativity[2] = {DefaultCacheLevelAssociativity,
+                          DefaultCacheLevelAssociativity};
+  int Sizes[2] = {DefaultFirstCacheLevelSize, DefaultSecondCacheLevelSize};
+  for (unsigned i = 0; i < 2; i++) {
+    if (CacheLevelAssociativity.size() > i && CacheLevelAssociativity[i] > 2)
+      Associativity[i] = CacheLevelAssociativity[i];
+    if (CacheLevelSizes.size() > i && CacheLevelSizes[i] > 0)
+      Sizes[i] = CacheLevelSizes[i];
+  }
+
   int Car = floor(
-      (CacheLevelAssociativity[0] - 1) /
+      (Associativity[0] - 1) /
       (1 + static_cast<double>(MicroKernelParams.Nr) / MicroKernelParams.Mr));
-  int Kc = (Car * CacheLevelSizes[0]) /
-           (MicroKernelParams.Mr * CacheLevelAssociativity[0] * 8);
-  double Cac = static_cast<double>(Kc * 8 * CacheLevelAssociativity[1]) /
-               CacheLevelSizes[1];
-  int Mc = floor((CacheLevelAssociativity[1] - 2) / Cac);
+  int Kc = (Car * Sizes[0]) / (MicroKernelParams.Mr * Associativity[0] * 8);
+  double Cac = static_cast<double>(Kc * 8 * Associativity[1]) / Sizes[1];
+  int Mc = floor((Associativity[1] - 2) / Cac);
   int Nc = PollyPatternMatchingNcQuotient * MicroKernelParams.Nr;
   return {Mc, Nc, Kc};
 }
Index: test/ScheduleOptimizer/pattern-matching-based-opts_3.ll
===================================================================
--- test/ScheduleOptimizer/pattern-matching-based-opts_3.ll
+++ test/ScheduleOptimizer/pattern-matching-based-opts_3.ll
@@ -1,4 +1,4 @@
-; RUN: opt %loadPolly -polly-opt-isl -polly-pattern-matching-based-opts=true -polly-target-throughput-vector-fma=1 -polly-target-latency-vector-fma=8 -analyze -polly-ast < %s 2>&1 | FileCheck %s
+; RUN: opt %loadPolly -polly-opt-isl -polly-pattern-matching-based-opts=true -polly-target-throughput-vector-fma=1 -polly-target-latency-vector-fma=8 -analyze -polly-ast -polly-pattern-matching-nc-quotient=0  < %s 2>&1 | FileCheck %s
 ; RUN: opt %loadPolly -polly-opt-isl -polly-pattern-matching-based-opts=true -polly-target-throughput-vector-fma=1 -polly-target-latency-vector-fma=8 -analyze -polly-ast -polly-target-cache-level-associativity=8,8 -polly-target-cache-level-sizes=32768,262144 < %s 2>&1 | FileCheck %s --check-prefix=EXTRACTION-OF-MACRO-KERNEL
 ;
 ;    /* C := alpha*A*B + beta*C */