llvm-6502/test/CodeGen/ARM
Ahmed Bougacha 5898fc70ec [ARM] Re-re-apply VLD1/VST1 base-update combine.
This re-applies r223862, r224198, r224203, and r224754, which were
reverted in r228129 because they exposed Clang misalignment problems
when self-hosting.

The combine caused the crashes because we turned ISD::LOAD/STORE nodes
to ARMISD::VLD1/VST1_UPD nodes.  When selecting addressing modes, we
were very lax for the former, and only emitted the alignment operand
(as in "[r1:128]") when it was larger than the standard alignment of
the memory type.

However, for ARMISD nodes, we just used the MMO alignment, no matter
what.  In our case, we turned ISD nodes to ARMISD nodes, and this
caused the alignment operands to start being emitted.

And that's how we exposed alignment problems that were ignored before
(but I believe would have been caught with SCTRL.A==1?).

To fix this, we can just mirror the hack done for ISD nodes:  only
take into account the MMO alignment when the access is overaligned.

Original commit message:
We used to only combine intrinsics, and turn them into VLD1_UPD/VST1_UPD
when the base pointer is incremented after the load/store.

We can do the same thing for generic load/stores.

Note that we can only combine the first load/store+adds pair in
a sequence (as might be generated for a v16f32 load for instance),
because other combines turn the base pointer addition chain (each
computing the address of the next load, from the address of the last
load) into independent additions (common base pointer + this load's
offset).

rdar://19717869, rdar://14062261.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229932 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 23:52:41 +00:00
..
Windows MC: Emit COFF section flags in the "proper" order 2015-02-07 08:26:40 +00:00
2006-11-10-CycleInDAG.ll
2007-01-19-InfiniteLoop.ll
2007-03-07-CombinerCrash.ll
2007-03-13-InstrSched.ll
2007-03-21-JoinIntervalsCrash.ll
2007-03-27-RegScavengerAssert.ll
2007-03-30-RegScavengerAssert.ll
2007-04-02-RegScavengerAssert.ll
2007-04-03-PEIBug.ll
2007-04-03-UndefinedSymbol.ll
2007-04-30-CombinerCrash.ll
2007-05-03-BadPostIndexedLd.ll
2007-05-07-tailmerge-1.ll
2007-05-09-tailmerge-2.ll
2007-05-14-InlineAsmCstCrash.ll
2007-05-14-RegScavengerAssert.ll
2007-05-22-tailmerge-3.ll
2007-05-23-BadPreIndexedStore.ll
2007-08-15-ReuseBug.ll
2008-02-04-LocalRegAllocBug.ll
2008-02-29-RegAllocLocal.ll
2008-03-05-SxtInRegBug.ll
2008-03-07-RegScavengerAssert.ll
2008-04-04-ScavengerAssert.ll
2008-04-10-ScavengerAssert.ll
2008-04-11-PHIofImpDef.ll
2008-05-19-LiveIntervalsBug.ll
2008-05-19-ScavengerAssert.ll
2008-07-17-Fdiv.ll
2008-07-24-CodeGenPrepCrash.ll
2008-08-07-AsmPrintBug.ll
2008-09-17-CoalescerBug.ll
2008-11-18-ScavengerAssert.ll
2009-02-16-SpillerBug.ll
2009-02-22-SoftenFloatVaArg.ll
2009-02-27-SpillerBug.ll
2009-03-07-SpillerBug.ll
2009-03-09-AddrModeBug.ll
2009-04-06-AsmModifier.ll
2009-04-08-AggregateAddr.ll
2009-04-08-FloatUndef.ll
2009-04-08-FREM.ll
2009-04-09-RegScavengerAsm.ll
2009-05-05-DAGCombineBug.ll
2009-05-07-RegAllocLocal.ll
2009-05-11-CodePlacementCrash.ll
2009-05-18-InlineAsmMem.ll
2009-06-02-ISelCrash.ll
2009-06-04-MissingLiveIn.ll
2009-06-15-RegScavengerAssert.ll
2009-06-19-RegScavengerAssert.ll
2009-06-22-CoalescerBug.ll
2009-06-30-RegScavengerAssert2.ll
2009-06-30-RegScavengerAssert3.ll
2009-06-30-RegScavengerAssert4.ll
2009-06-30-RegScavengerAssert5.ll
2009-06-30-RegScavengerAssert.ll
2009-07-01-CommuteBug.ll
2009-07-09-asm-p-constraint.ll
2009-07-18-RewriterBug.ll
2009-07-22-ScavengerAssert.ll
2009-07-22-SchedulerAssert.ll
2009-07-29-VFP3Registers.ll
2009-08-02-RegScavengerAssert-Neon.ll
2009-08-04-RegScavengerAssert-2.ll
2009-08-04-RegScavengerAssert.ll
2009-08-15-RegScavenger-EarlyClobber.ll
2009-08-15-RegScavengerAssert.ll
2009-08-21-PostRAKill2.ll
2009-08-21-PostRAKill3.ll
2009-08-21-PostRAKill.ll
2009-08-26-ScalarToVector.ll
2009-08-27-ScalarToVector.ll
2009-08-29-ExtractEltf32.ll
2009-08-29-TooLongSplat.ll
2009-08-31-LSDA-Name.ll
2009-08-31-TwoRegShuffle.ll
2009-09-09-AllOnes.ll
2009-09-09-fpcmp-ole.ll
2009-09-10-postdec.ll
2009-09-13-InvalidSubreg.ll
2009-09-13-InvalidSuperReg.ll
2009-09-20-LiveIntervalsBug.ll
2009-09-21-LiveVariablesBug.ll
2009-09-22-LiveVariablesBug.ll
2009-09-23-LiveVariablesBug.ll
2009-09-24-spill-align.ll
2009-09-27-CoalescerBug.ll
2009-09-28-LdStOptiBug.ll
2009-10-02-NEONSubregsBug.ll
2009-10-16-Scope.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
2009-10-27-double-align.ll
2009-10-30.ll
2009-11-01-NeonMoves.ll
2009-11-02-NegativeLane.ll
2009-11-07-SubRegAsmPrinting.ll
2009-11-13-CoalescerCrash.ll
2009-11-13-ScavengerAssert2.ll
2009-11-13-ScavengerAssert.ll
2009-11-13-VRRewriterCrash.ll
2009-11-30-LiveVariablesBug.ll
2009-12-02-vtrn-undef.ll
2010-03-04-eabi-fp-spill.ll
2010-03-04-stm-undef-addr.ll
2010-03-18-ldm-rtrn.ll
2010-04-09-NeonSelect.ll
2010-04-13-v2f64SplitArg.ll
2010-04-14-SplitVector.ll
2010-04-15-ScavengerDebugValue.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
2010-05-14-IllegalType.ll
2010-05-17-FastAllocCrash.ll
2010-05-18-LocalAllocCrash.ll
2010-05-18-PostIndexBug.ll
2010-05-19-Shuffles.ll
2010-05-20-NEONSpillCrash.ll
2010-05-21-BuildVector.ll
2010-06-11-vmovdrr-bitcast.ll
2010-06-21-LdStMultipleBug.ll
2010-06-21-nondarwin-tc.ll
2010-06-25-Thumb2ITInvalidIterator.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
2010-06-29-PartialRedefFastAlloc.ll
2010-06-29-SubregImpDefs.ll
2010-07-26-GlobalMerge.ll
2010-08-04-EHCrash.ll
2010-08-04-StackVariable.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
2010-09-21-OptCmpBug.ll
2010-10-25-ifcvt-ldm.ll
2010-11-15-SpillEarlyClobber.ll
2010-11-29-PrologueBug.ll
2010-12-07-PEIBug.ll
2010-12-08-tpsoft.ll
2010-12-15-elf-lcomm.ll
2010-12-17-LocalStackSlotCrash.ll
2011-01-19-MergedGlobalDbg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
2011-02-04-AntidepMultidef.ll
2011-02-07-AntidepClobber.ll
2011-03-10-DAGCombineCrash.ll
2011-03-15-LdStMultipleBug.ll
2011-03-23-PeepholeBug.ll
2011-04-07-schediv.ll
2011-04-11-MachineLICMBug.ll
2011-04-12-AlignBug.ll
2011-04-12-FastRegAlloc.ll
2011-04-15-AndVFlagPeepholeBug.ll
2011-04-15-RegisterCmpPeephole.ll
2011-04-26-SchedTweak.ll
2011-04-27-IfCvtBug.ll
2011-05-04-MultipleLandingPadSuccs.ll
2011-06-09-TailCallByVal.ll
2011-06-16-TailCallByVal.ll
2011-06-29-MergeGlobalsAlign.ll
2011-07-10-GlobalMergeBug.ll
2011-08-02-MergedGlobalDbg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
2011-08-12-vmovqqqq-pseudo.ll
2011-08-25-ldmia_ret.ll
2011-08-29-ldr_pre_imm.ll
2011-08-29-SchedCycle.ll
2011-09-09-OddVectorDivision.ll
2011-09-19-cpsr.ll
2011-09-28-CMovCombineBug.ll
2011-10-26-ExpandUnalignedLoadCrash.ll
2011-10-26-memset-inline.ll
2011-10-26-memset-with-neon.ll
2011-11-07-PromoteVectorLoadStore.ll
2011-11-09-BitcastVectorDouble.ll
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2011-11-14-EarlyClobber.ll
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2011-11-29-128bitArithmetics.ll
2011-11-30-MergeAlignment.ll
2011-12-14-machine-sink.ll
2011-12-19-sjlj-clobber.ll
2012-01-23-PostRA-LICM.ll
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2012-01-26-CopyPropKills.ll
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2012-03-26-FoldImmBug.ll
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2012-09-25-InlineAsmScalarToVectorConv.ll
2012-10-04-AAPCS-byval-align8.ll
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2013-05-13-AAPCS-byval-padding.ll
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2013-05-31-char-shift-crash.ll
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2013-07-29-vector-or-combine.ll
2013-10-11-select-stalls.ll
2013-11-08-inline-asm-neon-array.ll
2014-01-09-pseudo_expand_implicit_reg.ll
2014-02-05-vfp-regs-after-stack.ll
2014-02-21-byval-reg-split-alignment.ll
2014-05-14-DwarfEHCrash.ll
2014-07-18-earlyclobber-str-post.ll
2014-08-04-muls-it.ll [SimplifyCFG] Swap to using TargetTransformInfo for cost 2015-02-11 12:15:41 +00:00
2015-01-21-thumbv4t-ldstr-opt.ll Fix load-store optimizer on thumbv4t 2015-01-21 22:39:43 +00:00
a15-mla.ll
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adv-copy-opt.ll
aliases.ll
align.ll
alloc-no-stack-realign.ll [ARM] Re-re-apply VLD1/VST1 base-update combine. 2015-02-19 23:52:41 +00:00
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big-endian-neon-extend.ll [ARM] Use patterns instead of hardcoded regs in test. NFC. 2015-02-05 01:52:19 +00:00
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bits.ll
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build-attributes.ll [ARM] Add missing M/R class CPUs 2015-02-18 10:33:30 +00:00
bx_fold.ll
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coalesce-dbgvalue.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
coalesce-subregs.ll [SimplifyCFG] Swap to using TargetTransformInfo for cost 2015-02-11 12:15:41 +00:00
code-placement.ll
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compare-call.ll
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constantfp.ll
constants.ll
copy-cpsr.ll
copy-paired-reg.ll
crash-greedy-v6.ll
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crash-O0.ll
crash-shufflevector.ll
crash.ll
crc32.ll ARM: add test for crc32 instructions in CodeGen. 2015-01-14 01:43:33 +00:00
cse-call.ll
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cse-libcalls.ll
ctor_order.ll
ctors_dtors.ll
ctz.ll
dagcombine-anyexttozeroext.ll
dagcombine-concatvector.ll
darwin-eabi.ll
darwin-section-order.ll
data-in-code-annotations.ll
dbg.ll
DbgValueOtherTargets.test
debug-frame-large-stack.ll
debug-frame-no-debug.ll
debug-frame-vararg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-frame.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-arg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-blocks.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-branch-folding.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-d16-reg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-qreg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-s16-reg.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-info-sreg2.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
debug-segmented-stacks.ll IR: Move MDLocation into place 2015-01-14 22:27:36 +00:00
default-float-abi.ll
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domain-conv-vmovs.ll
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dyn-stackalloc.ll Revert "r226086 - Revert "r226071 - [RegisterCoalescer] Remove copies to reserved registers"" 2015-01-15 20:32:09 +00:00
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fold-const.ll
fold-stack-adjust.ll Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +00:00
formal.ll
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imm.ll
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inlineasm.ll
insn-sched1.ll
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integer_insertelement.ll
interrupt-attr.ll Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +00:00
intrinsics-crypto.ll
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intrinsics-v8.ll
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load.ll
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long_shift.ll
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long.ll
longMAC.ll This patch fixes issue with lowering below mentioned pattern :- 2015-01-23 09:10:03 +00:00
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mem.ll
memcpy-inline.ll [ARM] Re-re-apply VLD1/VST1 base-update combine. 2015-02-19 23:52:41 +00:00
memfunc.ll
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mls.ll
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movt.ll
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null-streamer.ll llvm-mc: Use Target::createNullStreamer to fix crashes on target-specific asm directives. 2015-02-19 00:45:04 +00:00
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returned-trunc-tail-calls.ll
rev.ll
saxpy10-a9.ll
sbfx.ll
section-name.ll Bring r226038 back. 2015-01-19 15:16:06 +00:00
section.ll
segmented-stacks-dynamic.ll
segmented-stacks.ll
select_xform.ll
select-imm.ll
select-undef.ll
select.ll
setcc-sentinals.ll
setcc-type-mismatch.ll ARM & AArch64: teach LowerVSETCC that output type size may differ from input. 2015-02-08 00:50:47 +00:00
shifter_operand.ll
shuffle.ll
sincos.ll
sjlj-prepare-critical-edge.ll Fix a bug in DemoteRegToStack where a reload instruction was inserted into the 2015-02-09 06:38:23 +00:00
sjljehprepare-lower-empty-struct.ll
smml.ll
smul.ll
smulw.ll
space-directive.ll
spill-q.ll Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +00:00
ssp-data-layout.ll
stack_guard_remat.ll
stack-alignment.ll Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +00:00
stack-frame.ll
stack-protector-bmovpcb_call.ll
stackpointer.ll
stm.ll
str_post.ll
str_pre-2.ll
str_pre.ll
str_trunc.ll
struct_byval_arm_t1_t2.ll
struct_byval.ll
struct-byval-frame-index.ll
sub-cmp-peephole.ll Fix ARM peephole optimizeCompare to avoid optimizing unsigned cmp to 0. 2015-02-02 16:56:50 +00:00
sub.ll
subreg-remat.ll
swift-atomics.ll
swift-vldm.ll
sxt_rot.ll
t2-imm.ll
tail-call-weak.ll
tail-call.ll
tail-dup.ll
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tail-opts.ll
taildup-branch-weight.ll
test-sharedidx.ll
this-return.ll
thread_pointer.ll
thumb1_return_sequence.ll
thumb1-varalloc.ll
thumb2-it-block.ll
thumb2-size-opt.ll
thumb_indirect_calls.ll
thumb-litpool.ll
tls1.ll
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tls-models.ll
trap.ll
trunc_ldr.ll
truncstore-dag-combine.ll
tst_teq.ll
twoaddrinstr.ll
uint64tof64.ll
umulo-32.ll
unaligned_load_store_vector.ll
unaligned_load_store.ll
undef-sext.ll
undefined.ll
unord.ll
unsafe-fsub.ll
unwind-init.ll
uxt_rot.ll
uxtb.ll
v1-constant-fold.ll
va_arg.ll
vaba.ll
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vabs.ll
vadd.ll
vararg_no_start.ll
varargs-spill-stack-align-nacl.ll
vargs_align.ll
vargs.ll
vbits.ll
vbsl-constant.ll
vbsl.ll
vceq.ll
vcge.ll
vcgt.ll
vcnt.ll
vcombine.ll
vcvt_combine.ll
vcvt-cost.ll
vcvt-v8.ll
vcvt.ll
vdiv_combine.ll
vdup.ll Canonicalize splats as build_vectors (PR22283) 2015-02-17 16:54:32 +00:00
vector-DAGCombine.ll
vector-extend-narrow.ll
vector-load.ll [ARM] Re-re-apply VLD1/VST1 base-update combine. 2015-02-19 23:52:41 +00:00
vector-promotion.ll
vector-spilling.ll
vector-store.ll [ARM] Re-re-apply VLD1/VST1 base-update combine. 2015-02-19 23:52:41 +00:00
vext.ll
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vfloatintrinsics.ll
vfp-libcalls.ll
vfp-regs-dwarf.ll
vfp.ll
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vicmp.ll
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vlddup.ll
vldlane.ll
vldm-liveness.ll
vldm-sched-a9.ll
vminmax.ll
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vmov.ll
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warn-stack.ll
weak2.ll
weak.ll
widen-vmovs.ll
wrong-t2stmia-size-opt.ll
zero-cycle-zero.ll
zextload_demandedbits.ll