Introduce experimental generic intrinsics for horizontal vector reductions.
- This change allows targets to opt-in to using them instead of the log2
shufflevector algorithm.
- The SLP and Loop vectorizers have the common code to do shuffle reductions
factored out into LoopUtils, and now have a unified interface for generating
reductions regardless of the preference of the target. LoopUtils now uses TTI
to determine what kind of reductions the target wants to handle.
- For CodeGen, basic legalization support is added.
Differential Revision: https://reviews.llvm.org/D30086
llvm-svn: 302514
diff --git a/llvm/lib/Analysis/TargetTransformInfo.cpp b/llvm/lib/Analysis/TargetTransformInfo.cpp
index 26d606c..a73fe65 100644
--- a/llvm/lib/Analysis/TargetTransformInfo.cpp
+++ b/llvm/lib/Analysis/TargetTransformInfo.cpp
@@ -500,6 +500,12 @@
return TTIImpl->getStoreVectorFactor(VF, StoreSize, ChainSizeInBytes, VecTy);
}
+bool TargetTransformInfo::useReductionIntrinsic(unsigned Opcode,
+ Type *Ty, ReductionFlags Flags) const {
+ return TTIImpl->useReductionIntrinsic(Opcode, Ty, Flags);
+}
+
+
TargetTransformInfo::Concept::~Concept() {}
TargetIRAnalysis::TargetIRAnalysis() : TTICallback(&getDefaultTTI) {}
diff --git a/llvm/lib/Analysis/VectorUtils.cpp b/llvm/lib/Analysis/VectorUtils.cpp
index 722f17a..2d2249d 100644
--- a/llvm/lib/Analysis/VectorUtils.cpp
+++ b/llvm/lib/Analysis/VectorUtils.cpp
@@ -23,6 +23,7 @@
#include "llvm/IR/PatternMatch.h"
#include "llvm/IR/Value.h"
#include "llvm/IR/Constants.h"
+#include "llvm/IR/IRBuilder.h"
using namespace llvm;
using namespace llvm::PatternMatch;