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We currently support LCSSA PHI nodes in the outer loop exit, if their incoming values do not come from the outer loop latch or if the outer loop latch has a single predecessor. In that case, the outer loop latch will be executed only if the inner loop gets executed. If we have multiple predecessors for the outer loop latch, it may be executed even if the inner loop does not get executed. This is a first step to support the case described in https://bugs.llvm.org/show_bug.cgi?id=30472 Reviewers: efriedma, karthikthecool, mcrosier Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D43237 llvm-svn: 331037 |
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| .. | ||
| call-instructions.ll | ||
| currentLimitation.ll | ||
| debuginfo.ll | ||
| interchange-flow-dep-outer.ll | ||
| interchange-insts-between-indvar.ll | ||
| interchange-no-deps.ll | ||
| interchangeable.ll | ||
| lcssa.ll | ||
| loop-interchange-optimization-remarks.ll | ||
| not-interchanged-dependencies-1.ll | ||
| not-interchanged-loop-nest-3.ll | ||
| not-interchanged-tightly-nested.ll | ||
| phi-ordering.ll | ||
| profitability.ll | ||
| reductions.ll | ||