Andrea Di Biagio b7882b3bd1 [Vectorizer] Add a new 'OperandValueKind' in TargetTransformInfo called ... 'OK_NonUniformConstValue' to identify operands which are constants but not constant splats. The cost model now allows returning 'OK_NonUniformConstValue' for non splat operands that are instances of ConstantVector or ConstantDataVector. With this change, targets are now able to compute different costs for instructions with non-uniform constant operands. For example, On X86 the cost of a vector shift may vary depending on whether the second operand is a uniform or non-uniform constant. This patch applies the following changes: - The cost model computation now takes into account non-uniform constants; - The cost of vector shift instructions has been improved in X86TargetTransformInfo analysis pass; - BBVectorize, SLPVectorizer and LoopVectorize now know how to distinguish between non-uniform and uniform constant operands. Added a new test to verify that the output of opt '-cost-model -analyze' is valid in the following configurations: SSE2, SSE4.1, AVX, AVX2. llvm-svn: 201272		2014-02-12 23:43:47 +00:00
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llvm	[Vectorizer] Add a new 'OperandValueKind' in TargetTransformInfo called	2014-02-12 23:43:47 +00:00
llvm-c	LTO API: add lto_module_create_from_memory_with_path.	2014-02-10 23:26:14 +00:00