[LoopAccesses] Make VectorizerParams global

As LAA is becoming a pass, we can no longer pass the params to its
constructor.  This changes the command line flags to have external
storage.  These can now be accessed both from LV and LAA.

VectorizerParams is moved out of LoopAccessInfo in order to shorten the
code to access it.

This is part of the patchset that converts LoopAccessAnalysis into an
actual analysis pass.

llvm-svn: 229622

1 files changed, 17 insertions, 15 deletions

diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index bd39b8048b1..3f6660203c0 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -106,14 +106,19 @@ using namespace llvm::PatternMatch;
 STATISTIC(LoopsVectorized, "Number of loops vectorized");
 STATISTIC(LoopsAnalyzed, "Number of loops analyzed for vectorization");
 
-static cl::opt<unsigned>
-VectorizationFactor("force-vector-width", cl::init(0), cl::Hidden,
-                    cl::desc("Sets the SIMD width. Zero is autoselect."));
-
-static cl::opt<unsigned>
-VectorizationInterleave("force-vector-interleave", cl::init(0), cl::Hidden,
-                    cl::desc("Sets the vectorization interleave count. "
-                             "Zero is autoselect."));
+static cl::opt<unsigned, true>
+VectorizationFactor("force-vector-width", cl::Hidden,
+                    cl::desc("Sets the SIMD width. Zero is autoselect."),
+                    cl::location(VectorizerParams::VectorizationFactor));
+unsigned VectorizerParams::VectorizationFactor = 0;
+
+static cl::opt<unsigned, true>
+VectorizationInterleave("force-vector-interleave", cl::Hidden,
+                        cl::desc("Sets the vectorization interleave count. "
+                                 "Zero is autoselect."),
+                        cl::location(
+                            VectorizerParams::VectorizationInterleave));
+unsigned VectorizerParams::VectorizationInterleave = 0;
 
 static cl::opt<bool>
 EnableIfConversion("enable-if-conversion", cl::init(true), cl::Hidden,
@@ -147,10 +152,10 @@ static const unsigned TinyTripCountUnrollThreshold = 128;
 
 /// When performing memory disambiguation checks at runtime do not make more
 /// than this number of comparisons.
-static const unsigned RuntimeMemoryCheckThreshold = 8;
+const unsigned VectorizerParams::RuntimeMemoryCheckThreshold = 8;
 
 /// Maximum simd width.
-static const unsigned MaxVectorWidth = 64;
+const unsigned VectorizerParams::MaxVectorWidth = 64;
 
 static cl::opt<unsigned> ForceTargetNumScalarRegs(
     "force-target-num-scalar-regs", cl::init(0), cl::Hidden,
@@ -551,10 +556,7 @@ public:
       : NumPredStores(0), TheLoop(L), SE(SE), DL(DL),
         TLI(TLI), TheFunction(F), TTI(TTI), Induction(nullptr),
         WidestIndTy(nullptr),
-        LAI(F, L, SE, DL, TLI, AA, DT,
-            LoopAccessInfo::VectorizerParams(
-                MaxVectorWidth, VectorizationFactor, VectorizationInterleave,
-                RuntimeMemoryCheckThreshold)),
+        LAI(F, L, SE, DL, TLI, AA, DT),
         HasFunNoNaNAttr(false) {}
 
   /// This enum represents the kinds of reductions that we support.
@@ -1019,7 +1021,7 @@ class LoopVectorizeHints {
     bool validate(unsigned Val) {
       switch (Kind) {
       case HK_WIDTH:
-        return isPowerOf2_32(Val) && Val <= MaxVectorWidth;
+        return isPowerOf2_32(Val) && Val <= VectorizerParams::MaxVectorWidth;
       case HK_UNROLL:
         return isPowerOf2_32(Val) && Val <= MaxInterleaveFactor;
       case HK_FORCE: