diff options
author | Robert Lytton <robert@xmos.com> | 2013-09-18 12:43:35 +0000 |
---|---|---|
committer | Robert Lytton <robert@xmos.com> | 2013-09-18 12:43:35 +0000 |
commit | d072d1b2a36f6c6e1b4b513dc69e91b61ad8c21a (patch) | |
tree | 352624eb2bc4107396f55510201c2acbd682aebe /lib/Transforms/Vectorize | |
parent | af96481135473f8da6de06f5ad18c09bd376a50f (diff) | |
download | external_llvm-d072d1b2a36f6c6e1b4b513dc69e91b61ad8c21a.zip external_llvm-d072d1b2a36f6c6e1b4b513dc69e91b61ad8c21a.tar.gz external_llvm-d072d1b2a36f6c6e1b4b513dc69e91b61ad8c21a.tar.bz2 |
Prevent LoopVectorizer and SLPVectorizer running if the target has no vector registers.
XCore target: Add XCoreTargetTransformInfo
This is where getNumberOfRegisters() resides, which in turn returns the
number of vector registers (=0).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190936 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Vectorize')
-rw-r--r-- | lib/Transforms/Vectorize/LoopVectorize.cpp | 5 | ||||
-rw-r--r-- | lib/Transforms/Vectorize/SLPVectorizer.cpp | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp index 1d82c7b..30908c8 100644 --- a/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -909,6 +909,11 @@ struct LoopVectorize : public LoopPass { DT = &getAnalysis<DominatorTree>(); TLI = getAnalysisIfAvailable<TargetLibraryInfo>(); + // If the target claims to have no vector registers don't attempt + // vectorization. + if (!TTI->getNumberOfRegisters(true)) + return false; + if (DL == NULL) { DEBUG(dbgs() << "LV: Not vectorizing because of missing data layout"); return false; diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp index b287ca7..cd3f723 100644 --- a/lib/Transforms/Vectorize/SLPVectorizer.cpp +++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp @@ -1572,6 +1572,11 @@ struct SLPVectorizer : public FunctionPass { StoreRefs.clear(); bool Changed = false; + // If the target claims to have no vector registers don't attempt + // vectorization. + if (!TTI->getNumberOfRegisters(true)) + return false; + // Must have DataLayout. We can't require it because some tests run w/o // triple. if (!DL) |