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llvm-project/llvm/test/Transforms/LICM/bisect-state.ll

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[LICM] Work around LICM needs to maintain state across loops. The pass creates some state which expects to be cleaned up by a later instance of the same pass. opt-bisect happens to expose this not ideal design because calling skipLoop() will result in this state not being cleaned up at times and an assertion firing in `doFinalization()`. Chandler tells me the new pass manager will give us options to avoid these design traps, but until it's not ready, we need a workaround for the current pass infrastructure. Fix provided by Andy Kaylor, see the review for a complete discussion. Differential Revision: https://reviews.llvm.org/D25848 llvm-svn: 290427
2016-12-23 21:12:50 +08:00
; Make sure we don't crash in LICM.
; RUN: opt %s -licm -opt-bisect-limit=1
define void @patatino() {
for.cond1:
br label %for.body
for.body:
br label %for.cond5
for.cond5:
br i1 true, label %if.end, label %for.end
if.end:
br label %for.cond5
for.end:
br label %for.body
}