[RISCV] Enable ordered reduction.

Reviewed By: craig.topper Differential Revision: https://reviews.llvm.org/D144455
llvm · Mar 7, 2023 · d5c404d · d5c404d
1 parent 92e0ab9
commit d5c404d
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
@@ -75,6 +75,7 @@ class RISCVTTIImpl : public BasicTTIImplBase<RISCVTTIImpl> {
 
   bool shouldExpandReduction(const IntrinsicInst *II) const;
   bool supportsScalableVectors() const { return ST->hasVInstructions(); }
+  bool enableOrderedReductions() const { return true; }
   bool enableScalableVectorization() const { return ST->hasVInstructions(); }
   TailFoldingStyle
   getPreferredTailFoldingStyle(bool IVUpdateMayOverflow) const {

diff --git a/llvm/test/Transforms/LoopVectorize/RISCV/ordered-reduction.ll b/llvm/test/Transforms/LoopVectorize/RISCV/ordered-reduction.ll
@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -passes=loop-vectorize -hints-allow-reordering=false -S < %s | FileCheck %s --check-prefix=CHECK-NOT-VECTORIZED
+; RUN: opt -passes=loop-vectorize -hints-allow-reordering=false -S < %s | FileCheck %s --check-prefix=CHECK-ORDERED
 ; RUN: opt -passes=loop-vectorize -S < %s | FileCheck %s --check-prefix=CHECK-UNORDERED
 ; RUN: opt -passes=loop-vectorize -force-ordered-reductions=false -hints-allow-reordering=false -S < %s | FileCheck %s --check-prefix=CHECK-NOT-VECTORIZED
 ; RUN: opt -passes=loop-vectorize -force-ordered-reductions=true -hints-allow-reordering=false -S < %s | FileCheck %s --check-prefix=CHECK-ORDERED