search for: hotcoldsplit

...tractor. As a result we end up with stale references to the llvm.assume calls that were moved to the outlined function in the parent function's cache. The problem can be reproduced on the attached file as follows (many thanks to Andy Kaylor for creating this reproducer) $ opt -slp-vectorizer -hotcoldsplit -slp-vectorizer -S -o - extract.ll opt: .../llvm/lib/Analysis/CodeMetrics.cpp:107: static void llvm::CodeMetrics::collectEphemeralValues(const llvm::Function*, llvm::AssumptionCache*, llvm::SmallPtrSetImpl<const llvm::Value*>&): Assertion `I->getParent()->getParent() == F &&...

...ode bytes are never executed, but likely to be in the cache. Function splitting is a well known compiler transformation primarily targeting improved code locality to improve performance. LLVM has a middle-end, target agnostic hot cold splitting pass <https://llvm.org/devmtg/2019-10/slides/Kumar-HotColdSplitting.pdf> as well as a partial inlining pass <https://github.com/llvm/llvm-project/blob/master/llvm/lib/Transforms/IPO/PartialInlining.cpp> which performs similar transformations, as noted by the authors in a recent email thread <https://lists.llvm.org/pipermail/llvm-dev/2020-June/142429...

...tractor. As a result we end up with stale references to the llvm.assume calls that were moved to the outlined function in the parent function's cache. The problem can be reproduced on the attached file as follows (many thanks to Andy Kaylor for creating this reproducer) $ opt -slp-vectorizer -hotcoldsplit -slp-vectorizer -S -o - extract.ll opt: .../llvm/lib/Analysis/CodeMetrics.cpp:107: static void llvm::CodeMetrics::collectEphemeralValues(const llvm::Function*, llvm::AssumptionCache*, llvm::SmallPtrSetImpl<const llvm::Value*>&): Assertion `I->getParent()->getParent() == F &&...

...be in the cache. >> >> Function splitting is a well known compiler transformation primarily >> targeting improved code locality to improve performance. LLVM has a >> middle-end, target agnostic hot cold splitting pass >> <https://llvm.org/devmtg/2019-10/slides/Kumar-HotColdSplitting.pdf> as >> well as a partial inlining pass >> <https://github.com/llvm/llvm-project/blob/master/llvm/lib/Transforms/IPO/PartialInlining.cpp> >> which performs similar transformations, as noted by the authors in a >> recent email thread >> <https://lists...

...the cache. Function splitting is a well known compiler transformation primarily targeting improved code locality to improve performance. LLVM has a middle-end, target agnostic hot cold splitting pass<https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_devmtg_2019-2D10_slides_Kumar-2DHotColdSplitting.pdf&d=DwMFaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=KfYo542rDdZQGClmgz-RBw&m=-cUmMKRcOXZHF-PpVxO_Dfg2mkIgP4L_QomIwDizeEE&s=xfh7APIZXGJikzsEVba8f1JsDG3aMqQCrlbanFKDvsI&e=> as well as a partial inlining pass<https://github.com/llvm/llvm-project/blob/master/llvm/lib/Transforms/IP...