forked from OSchip/llvm-project
237d4ee835
Jump threading can replace select then unconditional branch with conditional branch, but when doing so loses debug info. This destructive transform is eventually leading to a failed Verifier run during full LTO builds of the Linux kernel with CFI and KCOV enabled, as reported in PR39531. ModuleSanitizerCoveragePass will insert calls to __sanitizer_cov_trace_pc, and sometimes split critical edges, using whatever debug info may or may not exist for the branch for the added libcall. Since we can inline calls to __sanitizer_cov_trace_pc due to LTO, this can lead to the error observed in PR39531 when the debug info isn't propagated to the libcall, because of prior destructive transforms that failed to retain debug info. Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D100137 |
||
|---|---|---|
| .. | ||
| 2008-11-27-EntryMunge.ll | ||
| 2010-08-26-and.ll | ||
| 2011-04-02-SimplifyDeadBlock.ll | ||
| 2011-04-14-InfLoop.ll | ||
| 2012-07-19-NoSuccessorIndirectBr.ll | ||
| PR33357-lvi-recursion.ll | ||
| PR37745.ll | ||
| PR44611-across-header-hang.ll | ||
| and-and-cond.ll | ||
| and-cond.ll | ||
| assume-edge-dom.ll | ||
| assume.ll | ||
| basic.ll | ||
| bb-unreachable-from-entry.ll | ||
| branch-debug-info.ll | ||
| branch-debug-info2.ll | ||
| branch-no-const.ll | ||
| callbr-edge-split.ll | ||
| codesize-loop.ll | ||
| combine-metadata.ll | ||
| compare.ll | ||
| conservative-lvi.ll | ||
| constant-fold-status.ll | ||
| crash.ll | ||
| ddt-crash.ll | ||
| ddt-crash2.ll | ||
| ddt-crash3.ll | ||
| ddt-crash4.ll | ||
| degenerate-phi.ll | ||
| divergent-target-test.ll | ||
| fold-not-thread.ll | ||
| freeze-lvi-edgevaluelocal.ll | ||
| freeze.ll | ||
| guards.ll | ||
| header-succ.ll | ||
| implied-cond.ll | ||
| indirectbr.ll | ||
| induction.ll | ||
| is_constant.ll | ||
| landing-pad.ll | ||
| loop-phi.ll | ||
| lvi-load.ll | ||
| lvi-tristate.ll | ||
| ne-undef.ll | ||
| no-irreducible-loops.ll | ||
| noalias-scope-decl.ll | ||
| nonnull-gep-out-of-bounds.ll | ||
| or-undef.ll | ||
| phi-copy-to-pred.ll | ||
| phi-eq.ll | ||
| phi-known.ll | ||
| pr9331.ll | ||
| pr15851_hang.ll | ||
| pr22086.ll | ||
| pr26096.ll | ||
| pr27840.ll | ||
| pr33605.ll | ||
| pr33917.ll | ||
| pr36133.ll | ||
| pr40992-indirectbr-folding.ll | ||
| pr43276.ll | ||
| pr46857-callbr.ll | ||
| pre-load.ll | ||
| range-compare.ll | ||
| redundant-dbg-info.ll | ||
| removed-use.ll | ||
| select-unfold-freeze.ll | ||
| select-unfold-msan.ll | ||
| select.ll | ||
| stale-loop-info-after-unfold-select.ll | ||
| static-profile.ll | ||
| thread-cmp.ll | ||
| thread-loads.ll | ||
| thread-prob-1.ll | ||
| thread-prob-2.ll | ||
| thread-prob-3.ll | ||
| thread-prob-4.ll | ||
| thread-prob-5.ll | ||
| thread-prob-6.ll | ||
| thread-two-bbs-cuda.ll | ||
| thread-two-bbs-msvc.ll | ||
| thread-two-bbs-threshold.ll | ||
| thread-two-bbs.ll | ||
| threadable-edge-cast.ll | ||
| threading_prof1.ll | ||
| threading_prof2.ll | ||
| unreachable-loops.ll | ||
| update-edge-weight.ll | ||