diff options
| author | Sjoerd Meijer <sjoerd.meijer@arm.com> | 2019-11-14 13:10:44 +0000 |
|---|---|---|
| committer | Sjoerd Meijer <sjoerd.meijer@arm.com> | 2019-11-14 13:10:44 +0000 |
| commit | cb47b8783017a76c5f2e4b974cfd6b22c9f1d5ff (patch) | |
| tree | 4ccb2ed64e2fabb3f8dd682e27121a263ab88a66 /llvm/test/Transforms/LoopVectorize | |
| parent | 1c247dd028b368875bc36cd2a9ccc7fd90507776 (diff) | |
| download | bcm5719-llvm-cb47b8783017a76c5f2e4b974cfd6b22c9f1d5ff.tar.gz bcm5719-llvm-cb47b8783017a76c5f2e4b974cfd6b22c9f1d5ff.zip | |
[LV] PreferPredicateOverEpilog respecting predicate loop hint
The vectoriser queries TTI->preferPredicateOverEpilogue to determine if
tail-folding is preferred for a loop, but it was not respecting loop hint
'predicate' that can disable this, which has now been added. This showed that
we were incorrectly initialising loop hint 'vectorize.predicate.enable' with 0
(i.e. FK_Disabled) but this should have been FK_Undefined, which has been
fixed.
Differential Revision: https://reviews.llvm.org/D70125
Diffstat (limited to 'llvm/test/Transforms/LoopVectorize')
| -rw-r--r-- | llvm/test/Transforms/LoopVectorize/ARM/prefer-tail-loop-folding.ll | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/ARM/prefer-tail-loop-folding.ll b/llvm/test/Transforms/LoopVectorize/ARM/prefer-tail-loop-folding.ll index d8ada7ae607..fda374189c8 100644 --- a/llvm/test/Transforms/LoopVectorize/ARM/prefer-tail-loop-folding.ll +++ b/llvm/test/Transforms/LoopVectorize/ARM/prefer-tail-loop-folding.ll @@ -323,15 +323,12 @@ for.end: } define void @pragma_vect_predicate_disable(i32* noalias nocapture %A, i32* noalias nocapture readonly %B, i32* noalias nocapture readonly %C) #0 { -; CHECK-LABEL: pragma_vect_predicate_disable( -; -; FIXME: -; respect loop hint predicate.enable = false, and don't tail-fold here: -; -; PREFER-FOLDING: call <4 x i32> @llvm.masked.load.v4i32.p0v4i32 -; PREFER-FOLDING: call <4 x i32> @llvm.masked.load.v4i32.p0v4i32 -; PREFER-FOLDING: call void @llvm.masked.store.v4i32.p0v4i32 -; PREFER-FOLDING: br i1 %{{.*}}, label %{{.*}}, label %vector.body +; CHECK-LABEL: pragma_vect_predicate_disable( +; PREFER-FOLDING: vector.body: +; PREFER-FOLDING-NOT: call <4 x i32> @llvm.masked.load.v4i32.p0v4i32 +; PREFER-FOLDING-NOT: call <4 x i32> @llvm.masked.load.v4i32.p0v4i32 +; PREFER-FOLDING-NOT: call void @llvm.masked.store.v4i32.p0v4i32 +; PREFER-FOLDING: br i1 %{{.*}}, label %{{.*}}, label %vector.body entry: br label %for.body |
