Kerry McLaughlin d947615252 [LoopVectorize] Enable strict reductions when allowReordering() returns false ... When loop hints are passed via metadata, the allowReordering function in LoopVectorizationLegality will allow the order of floating point operations to be changed: bool allowReordering() const { // When enabling loop hints are provided we allow the vectorizer to change // the order of operations that is given by the scalar loop. This is not // enabled by default because can be unsafe or inefficient. The -enable-strict-reductions flag introduced in D98435 will currently only vectorize reductions in-loop if hints are used, since canVectorizeFPMath() will return false if reordering is not allowed. This patch changes canVectorizeFPMath() to query whether it is safe to vectorize the loop with ordered reductions if no hints are used. For testing purposes, an additional flag (-hints-allow-reordering) has been added to disable the reordering behaviour described above. Reviewed By: sdesmalen Differential Revision: https://reviews.llvm.org/D101836		2021-05-26 13:59:12 +01:00
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llvm	[LoopVectorize] Enable strict reductions when allowReordering() returns false	2021-05-26 13:59:12 +01:00
llvm-c	[ORC][C-bindings] Replace LLVMOrcJITTargetMachineBuilderDisposeTargetTriple.	2021-05-21 17:38:06 -07:00