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David Sherwood 42a72164a2 [IR][SVE] Add new llvm.experimental.stepvector intrinsic 
This patch adds a new llvm.experimental.stepvector intrinsic,
which takes no arguments and returns a linear integer sequence of
values of the form <0, 1, ...>. It is primarily intended for
scalable vectors, although it will work for fixed width vectors
too. It is intended that later patches will make use of this
new intrinsic when vectorising induction variables, currently only
supported for fixed width. I've added a new CreateStepVector
method to the IRBuilder, which will generate a call to this
intrinsic for scalable vectors and fall back on creating a
ConstantVector for fixed width.

For scalable vectors this intrinsic is lowered to a new ISD node
called STEP_VECTOR, which takes a single constant integer argument
as the step. During lowering this argument is set to a value of 1.
The reason for this additional argument at the codegen level is
because in future patches we will introduce various generic DAG
combines such as

  mul step_vector(1), 2 -> step_vector(2)
  add step_vector(1), step_vector(1) -> step_vector(2)
  shl step_vector(1), 1 -> step_vector(2)
  etc.

that encourage a canonical format for all targets. This hopefully
means all other targets supporting scalable vectors can benefit
from this too.

I've added cost model tests for both fixed width and scalable
vectors:

  llvm/test/Analysis/CostModel/AArch64/neon-stepvector.ll
  llvm/test/Analysis/CostModel/AArch64/sve-stepvector.ll

as well as codegen lowering tests for fixed width and scalable
vectors:

  llvm/test/CodeGen/AArch64/neon-stepvector.ll
  llvm/test/CodeGen/AArch64/sve-stepvector.ll

See this thread for discussion of the intrinsic:
https://lists.llvm.org/pipermail/llvm-dev/2021-January/147943.html
2021-03-23 10:43:35 +00:00
..
AMDGPU
ARM
Mips
SystemZ
2002-04-13-RetTypes.ll
2002-11-05-GetelementptrPointers.ll
2004-05-21-SwitchConstantMismatch.ll
2006-07-11-StoreStruct.ll
2006-10-15-AddrLabel.ll
2006-12-12-IntrinsicDefine.ll
2007-12-21-InvokeParamAttrs.ll
2008-01-11-VarargAttrs.ll OpaquePtr: Bulk update tests to use typed sret 2020-11-20 17:58:26 -05:00
2008-03-01-AllocaSized.ll
2008-11-15-RetVoid.ll
2009-05-29-InvokeResult1.ll
2009-05-29-InvokeResult2.ll
2009-05-29-InvokeResult3.ll
2010-08-07-PointerIntrinsic.ll
alias.ll
align-md.ll
align.ll Reapply "OpaquePtr: Add type to sret attribute" 2020-10-16 11:05:02 -04:00
alloc-size-failedparse.ll
allocsize.ll
AmbiguousPhi.ll
amdgpu-cc.ll OpaquePtr: Bulk update tests to use typed sret 2020-11-20 17:58:26 -05:00
annotation-metadata.ll Add !annotation metadata and remarks pass. 2020-11-13 13:24:10 +00:00
array_allocated.ll
array_associated.ll
array_dataLocation.ll
array_rank.ll [DebugInfo] Support for DWARF attribute DW_AT_rank 2020-10-10 17:51:12 +05:30
assume-bundles.ll Reland [AssumeBundles] Use operand bundles to encode alignment assumptions 2020-09-12 15:36:06 +02:00
atomics.ll
bitcast-address-space-nested-global-cycle.ll
bitcast-address-space-nested-global.ll
bitcast-address-space-through-constant-inttoptr-inside-gep-instruction.ll
bitcast-address-space-through-constant-inttoptr.ll
bitcast-address-space-through-gep-2.ll
bitcast-address-space-through-gep.ll
bitcast-address-space-through-inttoptr.ll
bitcast-address-spaces.ll
bitcast-alias-address-space.ll
bitcast-pointer-vector-neg.ll
bitcast-vector-pointer-as-neg.ll
bitcast-vector-pointer-as.ll
bitcast-vector-pointer-neg.ll
bitcast-vector-pointer-pos.ll
blockbyref.ll
bswap.ll
byref.ll OpaquePtr: Bulk update tests to use typed sret 2020-11-20 17:58:26 -05:00
byval-1.ll Verifier: Fix assert when verifying non-pointer byval or preallocated 2020-11-20 20:08:43 -05:00
byval-4.ll OpaquePtr: Bulk update tests to use typed byval 2020-11-20 14:00:46 -05:00
callbr.ll
callsite-dbgloc.ll
cc-flags.ll
comdat2.ll
comdat3.ll
comdat-decl1.ll
comdat-decl2.ll
comdat.ll
commandline-meta1.ll
commandline-meta2.ll
commandline-meta3.ll
commandline-meta4.ll
cttz-undef-arg.ll
dbg-difile-crash.ll
dbg-invalid-compileunit.ll
dbg-invalid-named-metadata.ll
dbg-invalid-retaintypes.ll
dbg-invalid-vector.ll
dbg-line-without-file.ll
dbg-null-retained-type.ll
dbg-orphaned-compileunit.ll
dbg-typerefs.ll
dbg.ll
deoptimize-intrinsic.ll
dereferenceable-md-inttoptr.ll
dereferenceable-md.ll
di-subroutine-localvar.ll
diderivedtype-address-space-atomic-type.ll
diderivedtype-address-space-const-type.ll
diderivedtype-address-space-friend.ll
diderivedtype-address-space-inheritance.ll
diderivedtype-address-space-member.ll
diderivedtype-address-space-ptr-to-member-type.ll
diderivedtype-address-space-restrict-type.ll
diderivedtype-address-space-rvalue-reference-type.ll
diderivedtype-address-space-typedef.ll
diderivedtype-address-space-volatile-type.ll
diexpression-dwarf-entry-value.ll
diexpression-entry-value-llvm-ir.ll
diexpression-entry-value.ll
diexpression-swap.ll
diexpression-valid-entry-value.ll Remove overzealous verifier check on DW_OP_LLVM_entry_value and improve the documentation 2021-02-04 10:58:35 -08:00
DIFile.ll
digenericsubrange-count-upperBound.ll [DebugInfo] Support for DW_TAG_generic_subrange 2020-10-29 01:34:15 +05:30
digenericsubrange-missing-stride.ll [DebugInfo] Support for DW_TAG_generic_subrange 2020-10-29 01:34:15 +05:30
digenericsubrange-missing-upperBound.ll [DebugInfo] Support for DW_TAG_generic_subrange 2020-10-29 01:34:15 +05:30
diglobalvariable.ll
dilocation-in-wrong-place.ll
DILocation-parents.ll
DILocation-scope.ll
disubprogram-name-match-only.ll
DISubprogram.ll
disubrange-count-upperBound.ll
disubrange-missing-upperBound.ll
dominates.ll
element-wise-atomic-memory-intrinsics.ll
extract-vector-mismatched-element-types.ll [SelectionDAG] Add llvm.vector.{extract,insert} intrinsics 2020-12-09 11:08:41 +00:00
fnarg-debuginfo.ll
fnarg-nodebug.ll
fp-intrinsics.ll [IR] Make nosync, nofree and willreturn default for intrinsics. 2020-10-20 11:57:19 +02:00
fpmath.ll
fragment.ll
frameescape.ll
func-dbg.ll
function-metadata-bad.ll
function-metadata-good.ll
gc_relocate_addrspace.ll
gc_relocate_operand.ll
gc_relocate_return.ll
gcread-ptrptr.ll
gcroot.ll
gcwrite-ptrptr.ll
get-active-lane-mask.ll
global-ctors-2.ll
global-ctors.ll
guard-intrinsic.ll
ident-meta1.ll
ident-meta2.ll
ident-meta3.ll
ident-meta4.ll
immarg-param-attribute-invalid.ll
inalloca1.ll OpaquePtr: Bulk update tests to use typed sret 2020-11-20 17:58:26 -05:00
inalloca2.ll
inalloca3.ll
inalloca-vararg.ll
insert-vector-mismatched-element-types.ll [SelectionDAG] Add llvm.vector.{extract,insert} intrinsics 2020-12-09 11:08:41 +00:00
intrinsic-arg-overloading-struct-ret.ll
intrinsic-bad-arg-type.ll
intrinsic-immarg.ll
invalid-disubrange-count-node.ll
invalid-disubrange-lowerBound.ll
invalid-disubrange-stride.ll
invalid-disubrange-upperBound.ll
invalid-eh.ll
invalid-frame-pointer-attr-empty.ll
invalid-frame-pointer-attr-no-value.ll
invalid-frame-pointer-attr.ll
invalid-patchable-function-entry.ll
invalid-statepoint.ll
invoke.ll
jumptable.ll
llvm.compiler_used-invalid-type.ll
llvm.dbg.declare-address.ll
llvm.dbg.declare-expression.ll
llvm.dbg.declare-variable.ll
llvm.dbg.intrinsic-dbg-attachment.ll
llvm.dbg.value-expression.ll
llvm.dbg.value-value.ll
llvm.dbg.value-variable.ll
llvm.loop-cu-strip.ll Have stripDebugInfo() also strip !llvm.loop annotations from all 2021-02-05 17:22:41 -08:00
llvm.loop.cu.ll
llvm.loop.ll
llvm.used-invalid-init2.ll
llvm.used-invalid-init.ll
llvm.used-invalid-type2.ll
llvm.used-invalid-type.ll
llvm.used-ptr-type.ll
masked-load.ll
masked-store.ll
matrix-intrinsics.ll
mdcompositetype-templateparams-tuple.ll
mdcompositetype-templateparams.ll
memcpy-inline.ll
memcpy.ll
metadata-function-dbg.ll
metadata-function-prof.ll
module-flags-1.ll
module-flags-2.ll
module-flags-3.ll
module-flags-cgprofile.ll
module-flags-semantic-interposition.ll
musttail-invalid.ll OpaquePtr: Bulk update tests to use typed sret 2020-11-20 17:58:26 -05:00
musttail-valid.ll
noalias_scope_decl.ll Introduce llvm.noalias.decl intrinsic 2021-01-16 09:20:45 +01:00
non-integer-gep-index.ll
non-integer-gep-index.ll.bc
non-integral-pointers.ll
noundef.ll Reapply "OpaquePtr: Add type to sret attribute" 2020-10-16 11:05:02 -04:00
operand-bundles.ll [ObjC][ARC] Use operand bundle 'clang.arc.attachedcall' instead of 2021-03-04 11:22:30 -08:00
PhiGrouping.ll
pr34325.ll
preallocated-invalid.ll Verifier: Fix assert when verifying non-pointer byval or preallocated 2020-11-20 20:08:43 -05:00
preallocated-valid.ll
range-1.ll
range-2.ll
README.txt
recursive-struct-param.ll
recursive-type-1.ll
recursive-type-2.ll
recursive-type-3.ll
recursive-type-load.ll
recursive-type-store.ll
reduction-intrinsics.ll [IR] restrict vector reduction intrinsic types 2021-02-21 12:37:00 -05:00
resume.ll
sat-intrinsics.ll [Verifier] add tests for saturating intrinsics; NFC 2021-02-19 14:58:25 -05:00
scalable-global-vars.ll [IR] Allow scalable vectors in structs to support intrinsics returning multiple values. 2021-01-17 23:29:51 -08:00
scalable-vector-struct-alloca.ll [IR] Allow scalable vectors in structs to support intrinsics returning multiple values. 2021-01-17 23:29:51 -08:00
scalable-vector-struct-load.ll [IR] Allow scalable vectors in structs to support intrinsics returning multiple values. 2021-01-17 23:29:51 -08:00
scalable-vector-struct-store.ll [IR] Allow scalable vectors in structs to support intrinsics returning multiple values. 2021-01-17 23:29:51 -08:00
scatter_gather.ll
SelfReferential.ll
speculatable-callsite-invalid.ll
speculatable-callsite.ll
sret.ll Verifier: Fix assert when verifying non-pointer byval or preallocated 2020-11-20 20:08:43 -05:00
statepoint.ll OpaquePtr: Bulk update tests to use typed sret 2020-11-20 17:58:26 -05:00
stepvector-intrinsic.ll [IR][SVE] Add new llvm.experimental.stepvector intrinsic 2021-03-23 10:43:35 +00:00
swifterror2.ll
swifterror3.ll
swifterror.ll
swiftself.ll
tbaa-allowed.ll
tbaa.ll
token1.ll
token2.ll
token3.ll
token4.ll
token5.ll
token6.ll
token7.ll
unique-disubprogram.ll Add a verifier check that rejects non-distinct DISubprogram function 2020-09-25 12:04:46 -07:00
unsized-types-alloca.ll
unsized-types-load.ll
unsized-types-store.ll
varargs-intrinsic.ll
variant-part.ll
vp-intrinsics.ll
vscale_range.ll [IR] Add vscale_range IR function attribute 2021-03-22 12:05:06 +00:00
weak-dllimport.ll
writeonly.ll
x86_intr.ll OpaquePtr: Require byval on x86_intrcc parameter 0 2020-12-14 16:34:37 -05:00

README.txt 

This directory contains testcases that the verifier is supposed to detect as
malformed LLVM code.  Testcases for situations that the verifier incorrectly
identifies as malformed should go in the test/Assembler directory.