forked from OSchip/llvm-project
ac79007205
[FPEnv] Added a special UnrollVectorOp method to deal with the chain on StrictFP opcodes This change creates UnrollVectorOp_StrictFP. The purpose of this is to address a failure that consistently occurs when calling StrictFP functions on vectors whose number of elements is 3 + 2n on most platforms, such as PowerPC or SystemZ. The old UnrollVectorOp method does not expect that the vector that it will unroll will have a chain, so it has an assert that prevents it from running if this is the case. This new StrictFP version of the method deals with the chain while unrolling the vector. With this new function in place during vector widending, llc can run vector-constrained-fp-intrinsics.ll for SystemZ successfully. Submitted by: Drew Wock <drew.wock@sas.com> Reviewed by: Cameron McInally, Kevin P. Neal Approved by: Cameron McInally Differential Revision: https://reviews.llvm.org/D62546 llvm-svn: 362241 |
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