Add a basic-block autovectorization pass.
This is the initial checkin of the basic-block autovectorization pass along with some supporting vectorization infrastructure.
Special thanks to everyone who helped review this code over the last several months (especially Tobias Grosser).
llvm-svn: 149468
diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
index afd25dc..8408437 100644
--- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -21,14 +21,20 @@
#include "llvm/DefaultPasses.h"
#include "llvm/PassManager.h"
#include "llvm/Analysis/Passes.h"
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Vectorize.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/ManagedStatic.h"
using namespace llvm;
+static cl::opt<bool>
+RunVectorization("vectorize", cl::desc("Run vectorization passes"));
+
PassManagerBuilder::PassManagerBuilder() {
OptLevel = 2;
SizeLevel = 0;
@@ -37,6 +43,7 @@
DisableSimplifyLibCalls = false;
DisableUnitAtATime = false;
DisableUnrollLoops = false;
+ Vectorize = RunVectorization;
}
PassManagerBuilder::~PassManagerBuilder() {
@@ -172,6 +179,13 @@
addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
+ if (Vectorize) {
+ MPM.add(createBBVectorizePass());
+ MPM.add(createInstructionCombiningPass());
+ if (OptLevel > 1)
+ MPM.add(createGVNPass()); // Remove redundancies
+ }
+
MPM.add(createAggressiveDCEPass()); // Delete dead instructions
MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
MPM.add(createInstructionCombiningPass()); // Clean up after everything.