src/IceOperand.h - Issue 775953003: Subzero: Improve performance by using llvm::SmallVector<>.

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Unified Diff: src/IceOperand.h

Issue 775953003: Subzero: Improve performance by using llvm::SmallVector<>. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master

Patch Set: Created 6 years ago

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Index: src/IceOperand.h

diff --git a/src/IceOperand.h b/src/IceOperand.h

index c99b9d7a6f355405e6925f8532574c3a7d50b373..99bbd39dbcb442bc8d5ebb3d8bf05e429f44361a 100644

--- a/src/IceOperand.h

+++ b/src/IceOperand.h

@@ -362,7 +362,8 @@ public:

private:

typedef std::pair<InstNumberT, InstNumberT> RangeElementType;

- typedef std::vector<RangeElementType> RangeType;

+ // Assume a common case of 2 or fewer segments per live range.

+ typedef llvm::SmallVector<RangeElementType, 2> RangeType;

RangeType Range;

RegWeight Weight;

// TrimmedBegin is an optimization for the overlaps() computation.

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