llvm-project/llvm/test/Transforms/GVN
Alexandros Lamprineas e4c91f5c4c [GVN] Don't perform scalar PRE on GEPs
Partial Redundancy Elimination of GEPs prevents CodeGenPrepare from
sinking the addressing mode computation of memory instructions back
to its uses. The problem comes from the insertion of PHIs, which
confuse CGP and make it bail.

I've autogenerated the check lines of an existing test and added a
store instruction to demonstrate the motivation behind this change.
The store is now using the gep instead of a phi.

Differential Revision: https://reviews.llvm.org/D55009

llvm-svn: 348496
2018-12-06 16:11:58 +00:00
..
PRE [GVN] Don't perform scalar PRE on GEPs 2018-12-06 16:11:58 +00:00
2007-07-25-DominatedLoop.ll
2007-07-25-InfiniteLoop.ll
2007-07-25-Loop.ll
2007-07-25-NestedLoop.ll
2007-07-25-SinglePredecessor.ll
2007-07-26-InterlockingLoops.ll
2007-07-26-NonRedundant.ll
2007-07-26-PhiErasure.ll
2007-07-30-PredIDom.ll
2007-07-31-NoDomInherit.ll
2007-07-31-RedundantPhi.ll
2008-02-12-UndefLoad.ll
2008-02-13-NewPHI.ll
2008-07-02-Unreachable.ll
2008-12-09-SelfRemove.ll
2008-12-12-RLE-Crash.ll
2008-12-14-rle-reanalyze.ll
2008-12-15-CacheVisited.ll
2009-01-21-SortInvalidation.ll
2009-01-22-SortInvalidation.ll
2009-03-10-PREOnVoid.ll
2009-07-13-MemDepSortFail.ll
2009-11-12-MemDepMallocBitCast.ll
2010-03-31-RedundantPHIs.ll
2010-05-08-OneBit.ll
2010-11-13-Simplify.ll
2011-04-27-phioperands.ll
2011-07-07-MatchIntrinsicExtract.ll
2011-09-07-TypeIdFor.ll
2012-05-22-PreCrash.ll
2016-08-30-MaskedScatterGather.ll Support arbitrary address space pointers in masked gather/scatter intrinsics. 2017-05-03 12:28:54 +00:00
MemdepMiscompile.ll
assume-equal.ll [Devirtualization] MemDep returns non-local !invariant.group dependencies 2017-01-12 11:33:58 +00:00
basic-undef-test.ll
basic.ll
big-endian.ll Do not widen load for different variable in GVN. 2016-09-09 18:42:35 +00:00
bitcast-of-call.ll
br-identical.ll
calloc-load-removal.ll
calls-nonlocal.ll
calls-readonly.ll
commute.ll
cond_br.ll
cond_br2.ll Add address space mangling to lifetime intrinsics 2017-04-10 20:18:21 +00:00
condprop.ll [GVN] Invalidate cached info for values replaced by equality propagation 2018-09-10 12:23:05 +00:00
crash-no-aa.ll
crash.ll
dbg-redundant-load.ll [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
debugloc.ll Do not propagate DebugLoc across basic blocks 2017-01-31 20:57:13 +00:00
edge.ll
fence.ll [Debugify] Move debug value intrinsics closer to their operand defs 2018-06-06 19:05:42 +00:00
flags.ll
fold-const-expr.ll Fix some DOS-style line endings that I suspect snuck in from one of the 2016-12-23 02:02:26 +00:00
fpmath.ll
funclet.ll
int_sideeffect.ll Add an @llvm.sideeffect intrinsic 2017-11-08 21:59:51 +00:00
invariant.group.ll Implement strip.invariant.group 2018-07-02 04:49:30 +00:00
invariant.start.ll
lifetime-simple.ll Add address space mangling to lifetime intrinsics 2017-04-10 20:18:21 +00:00
load-constant-mem.ll
load-from-unreachable-predecessor.ll
malloc-load-removal.ll
no-mem-dep-info.ll [GVN] Assign new value number to calls reading memory, if there is no MemDep info. 2018-08-21 19:11:27 +00:00
no_speculative_loads_with_asan.ll Hardware-assisted AddressSanitizer (llvm part). 2017-12-09 00:21:41 +00:00
noalias.ll
non-integral-pointers.ll [GVN] Don't coerce non-integral pointers to integers or vice versa 2017-04-19 18:21:09 +00:00
non-local-offset.ll
nonescaping-malloc.ll Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
null-aliases-nothing.ll
opt-remarks.ll Make YAML quote forward slashes. 2018-10-12 16:31:20 +00:00
phi-translate-partial-alias.ll
pr10820.ll
pr12979.ll
pr14166.ll
pr17732.ll Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 2018-01-19 17:13:12 +00:00
pr17852.ll
pr24397.ll
pr24426.ll
pr25440.ll Do not widen load for different variable in GVN. 2016-09-09 18:42:35 +00:00
pr28562.ll
pr28879.ll [GVN] Avoid casting a vector of size less than 8 bits to i8 2018-06-21 21:43:20 +00:00
pr32314.ll [BasicAA] Add test case that goes with r305481. 2017-06-15 17:27:56 +00:00
pr34908.ll [GVN] Don't replace constants with constants. 2017-10-11 04:21:51 +00:00
pr36063.ll Mark MergedLoadStoreMotion as not preserving MemDep results 2018-02-23 10:41:57 +00:00
pre-compare.ll
pre-new-inst.ll
propagate-ir-flags.ll Fixed the lost FastMathFlags in GVN(Global Value Numbering). 2016-11-22 20:52:53 +00:00
range.ll [Local] Keep K's range if K does not move when combining metadata. 2018-10-27 16:53:45 +00:00
readattrs.ll
rle-must-alias.ll
rle-no-phi-translate.ll
rle-nonlocal.ll
stale-loop-info.ll [GVN] When merging blocks update LoopInfo if it's available 2016-12-01 03:56:43 +00:00
tbaa.ll [Analysis] Generate more precise TBAA tags when one access encloses the other 2017-12-18 20:05:20 +00:00
unreachable-predecessor.ll [GVN] Invalidate cached info for phis when setting dead predecessors to undef 2018-08-23 12:48:17 +00:00
unreachable_block_infinite_loop.ll
volatile-nonvolatile.ll