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LLVM backend for 6502
39f807fc9f
------------------------------------------------------------------------ r214714 | uweigand | 2014-08-04 08:13:57 -0500 (Mon, 04 Aug 2014) | 19 lines [PowerPC] Fix and improve vector comparisons This patch refactors code generation of vector comparisons. This fixes a wrong code-gen bug for ISD::SETGE for floating-point types, and improves generated code for vector comparisons in general. Specifically, the patch moves all logic deciding how to implement vector comparisons into getVCmpInst, which gets two extra boolean outputs indicating to its caller whether its needs to swap the input operands and/or negate the result of the comparison. Apart from implementing these two modifications as directed by getVCmpInst, there is no need to ever implement vector comparisons in any other manner; in particular, there is never a need to perform two separate comparisons (e.g. one for equal and one for greater-than, as code used to do before this patch). Reviewed by Bill Schmidt. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_35@214817 91177308-0d34-0410-b5e6-96231b3b80d8 |
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