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llvm-project/llvm/test/Transforms/LoopVectorize
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Chandler Carruth 6f4ed077d0 [LV] Fix an issue where forming LCSSA in the place that we did would 
change the set of uniform instructions in the loop causing an assert
failure.

The problem is that the legalization checking also builds data
structures mapping various facts about the loop body. The immediate
cause was the set of uniform instructions. If these then change when
LCSSA is formed, the data structures would already have been built and
become stale. The included test case triggered an assert in loop
vectorize that was reduced out of the new PM's pipeline.

The solution is to form LCSSA early enough that no information is cached
across the changes made. The only really obvious position is outside of
the main logic to vectorize the loop. This also has the advantage of
removing one case where forming LCSSA could mutate the loop but we
wouldn't track that as a "Changed" state.

If it is significantly advantageous to do some legalization checking
prior to this, we can do a more careful positioning but it seemed best
to just back off to a safe position first.

llvm-svn: 293168
 		2017-01-26 10:41:09 +00:00
..
AArch64 Reapply "[LV] Enable vectorization of loops with conditional stores by default" 2016-12-16 19:12:02 +00:00
ARM [Verifier] Add verification for TBAA metadata 2016-12-11 20:07:15 +00:00
PowerPC [ppc] Correctly compute the cost of loading 32/64 bit memory into VSR 2016-12-03 00:41:43 +00:00
X86 [X86] enable memory interleaving for X86\SLM arch. 2017-01-25 09:14:48 +00:00
XCore
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12-12-11-if-conv.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
2012-10-20-infloop.ll
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2012-10-22-isconsec.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
2016-07-27-loop-vec.ll Fix the assertion error in collectLoopUniforms caused by empty Worklist before expanding. 2016-07-27 23:53:58 +00:00
align.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
bsd_regex.ll
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bzip_reverse_loops.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
calloc.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
cast-induction.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
conditional-assignment.ll Reapply "[LV] Enable vectorization of loops with conditional stores by default" 2016-12-16 19:12:02 +00:00
consec_no_gep.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
consecutive-ptr-uniforms.ll Reapply "[LV] Enable vectorization of loops with conditional stores by default" 2016-12-16 19:12:02 +00:00
control-flow.ll [LV] Stop saying "use -Rpass-analysis=loop-vectorize" 2016-11-11 22:51:46 +00:00
cpp-new-array.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
dbg.value.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
dead_instructions.ll [LV] Avoid emitting trivially dead instructions 2016-10-19 19:22:02 +00:00
debugloc.ll Update vectorization debug info unittest. 2016-11-09 22:25:19 +00:00
diag-missing-instr-debug-loc.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
diag-with-hotness-info-2.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
diag-with-hotness-info.ll [LoopVersioning] Require loop-simplify form for loop versioning. 2016-12-19 17:13:37 +00:00
duplicated-metadata.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
ee-crash.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
exact.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
flags.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
float-induction.ll [Loop Vectorizer] Handling loops FP induction variables. 2016-07-24 07:24:54 +00:00
float-reduction.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
funcall.ll
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gcc-examples.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
gep_with_bitcast.ll [LV] Don't widen trivial induction variables 2016-07-06 14:26:59 +00:00
global_alias.ll [LV] Scalarize instructions marked scalar after vectorization 2016-09-26 17:08:37 +00:00
hints-trans.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
hoist-loads.ll
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i8-induction.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
icmp-uniforms.ll [LV] Don't mark multi-use branch conditions uniform 2016-10-07 15:20:13 +00:00
if-conv-crash.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
if-conversion-edgemasks.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
if-conversion-nest.ll
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if-conversion-reduction.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
if-conversion.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
if-pred-non-void.ll [LV] Scalarize operands of predicated instructions 2016-12-07 15:03:32 +00:00
if-pred-not-when-safe.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
if-pred-stores.ll Reapply "[LV] Enable vectorization of loops with conditional stores by default" 2016-12-16 19:12:02 +00:00
incorrect-dom-info.ll
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increment.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
induction-step.ll [LoopVectorize] Handling induction variable with non-constant step. 2016-05-10 07:33:35 +00:00
induction.ll [LV] Sink scalar operands of predicated instructions 2016-10-25 18:59:45 +00:00
induction_plus.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
infiniteloop.ll
…
interleaved-accesses-1.ll Second attempt at r285517. 2016-10-31 13:17:31 +00:00
interleaved-accesses-2.ll Second attempt at r285517. 2016-10-31 13:17:31 +00:00
interleaved-accesses-3.ll Second attempt at r285517. 2016-10-31 13:17:31 +00:00
interleaved-accesses-pred-stores.ll Reapply "[LV] Enable vectorization of loops with conditional stores by default" 2016-12-16 19:12:02 +00:00
interleaved-accesses.ll [LV] Ensure reverse interleaved group GEPs remain uniform 2016-09-02 16:19:22 +00:00
intrinsic.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
iv_outside_user.ll [LV] Fix-up external IV users after updating dominator tree 2017-01-09 19:05:29 +00:00
lcssa-crash.ll [LV] Fix an issue where forming LCSSA in the place that we did would 2017-01-26 10:41:09 +00:00
lifetime.ll
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loop-form.ll
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loop-vect-memdep.ll
…
memdep.ll
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metadata-unroll.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
metadata-width.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
metadata.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
miniters.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
minmax_reduction.ll
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multi-use-reduction-bug.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
multiple-address-spaces.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
multiple-strides-vectorization.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
no_array_bounds.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
no_idiv_reduction.ll
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no_int_induction.ll
…
no_outside_user.ll Recommit [LV] Enable vectorization of loops where the IV has an external use 2016-06-15 00:35:26 +00:00
no_switch.ll [LV] Stop saying "use -Rpass-analysis=loop-vectorize" 2016-11-11 22:51:46 +00:00
noalias-md-licm.ll [LoopVectorize] Annotate versioned loop with noalias metadata 2016-03-17 20:32:37 +00:00
noalias-md.ll [LoopVectorize] Annotate versioned loop with noalias metadata 2016-03-17 20:32:37 +00:00
nofloat.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
non-const-n.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
nontemporal.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
nsw-crash.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
opt.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
optsize.ll
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partial-lcssa.ll [LV] Run loop-simplify and LCSSA explicitly instead of "requiring" them 2017-01-19 00:42:28 +00:00
phi-hang.ll [Verifier] Reject PHIs using defs from own block. 2016-03-26 23:32:57 +00:00
pr25281.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
pr28541.ll [LoopVectorize] Detect loops in the innermost loop before creating InnerLoopVectorizer 2016-08-12 22:47:13 +00:00
pr31190.ll [LV] Run loop-simplify and LCSSA explicitly instead of "requiring" them 2017-01-19 00:42:28 +00:00
ptr-induction.ll Reverted patch 273864 2016-06-29 10:01:06 +00:00
ptr_loops.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
read-only.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
reduction.ll [LV] Allow reductions that have several uses outside the loop 2017-01-18 19:02:52 +00:00
reverse_induction.ll [LV] Don't emit unused scalars for uniform instructions 2016-09-21 16:50:24 +00:00
reverse_iter.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
runtime-check-address-space.ll
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runtime-check-readonly-address-space.ll
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runtime-check-readonly.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
runtime-check.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
runtime-limit.ll
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safegep.ll
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same-base-access.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
scalar-select.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
scalar_after_vectorization.ll [LV] Scalarize instructions marked scalar after vectorization 2016-09-26 17:08:37 +00:00
scev-exitlim-crash.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
simple-unroll.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
small-loop.ll [LV] Don't vectorize when we have a small static bound on trip count 2016-12-13 20:38:18 +00:00
start-non-zero.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
store-shuffle-bug.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
struct_access.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
tbaa-nodep.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
undef-inst-bug.ll
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unroll.ll
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unroll_novec.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
unsafe-dep-remark.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
unsized-pointee-crash.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
value-ptr-bug.ll
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vect.omp.persistence.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
vect.stats.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
vectorize-once.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
version-mem-access.ll
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write-only.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00
zero-sized-pointee-crash.ll [LV] Remove triples from target-independent vectorizer tests. NFC. 2016-10-06 23:57:25 +00:00