forked from OSchip/llvm-project
22c91df52c
This is a bugfix patch that resolves the following two bugs in loop interchange: 1. PR57148 which is an assertion error due to of loss of LCSSA form after interchange, as referred to test1() in pr57148.ll. 2. Use before def for the outermost loop induction variables after interchange, as referred to test2() in pr57148.ll. The fix in this patch is that: 1. In cases where the LCSSA form is not maintained after interchange, we update the IR to the LCSSA form again. 2. We split the phi nodes in the inner loop header into a separate basic block to avoid the situation where use of the outer indvar appears before its def after interchange. Previously we already did this for innermost loops, now we do it for non-innermost loops (e.g., middle loops) as well. Reviewed By: bmahjour, Meinersbur, #loopoptwg Differential Revision: https://reviews.llvm.org/D132055 |
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| .. | ||
| call-instructions.ll | ||
| currentLimitation.ll | ||
| debuginfo.ll | ||
| inner-indvar-depend-on-outer-indvar.ll | ||
| inner-only-reductions.ll | ||
| innermost-latch-uses-values-in-middle-header.ll | ||
| interchange-flow-dep-outer.ll | ||
| interchange-insts-between-indvar.ll | ||
| interchange-no-deps.ll | ||
| interchangeable-innerloop-multiple-indvars.ll | ||
| interchangeable-outerloop-multiple-indvars.ll | ||
| interchangeable.ll | ||
| interchanged-loop-nest-3.ll | ||
| interchanged-loop-nest-4.ll | ||
| lcssa-preheader.ll | ||
| lcssa.ll | ||
| loop-interchange-optimization-remarks.ll | ||
| not-interchanged-dependencies-1.ll | ||
| not-interchanged-loop-nest-3.ll | ||
| not-interchanged-tightly-nested.ll | ||
| outer-header-jump-to-inner-latch.ll | ||
| outer-only-reductions.ll | ||
| perserve-lcssa.ll | ||
| phi-ordering.ll | ||
| pr43176-move-to-new-latch.ll | ||
| pr43326-ideal-access-pattern.ll | ||
| pr43326.ll | ||
| pr43473-invalid-lcssa-phis-in-inner-exit.ll | ||
| pr43797-lcssa-for-multiple-outer-loop-blocks.ll | ||
| pr45743-move-from-inner-preheader.ll | ||
| pr48212.ll | ||
| pr56275.ll | ||
| pr57148.ll | ||
| profitability.ll | ||
| reductions-across-inner-and-outer-loop.ll | ||
| update-condbranch-duplicate-successors.ll | ||
| vector-gep-operand.ll | ||