# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple aarch64-apple-ios -run-pass=aarch64-prelegalizer-combiner %s -o - | FileCheck %s
# Check that we canonicalize concat_vectors(build_vector, build_vector)
# into build_vector.
---
name: concat_to_build_vector
tracksRegLiveness: true
body: |
bb.1:
liveins: $x0, $x1, $x2, $x3
; CHECK-LABEL: name: concat_to_build_vector
; CHECK: liveins: $x0, $x1, $x2, $x3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s64) = COPY $x2
; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(s64) = COPY $x3
; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x s64>) = G_BUILD_VECTOR [[COPY]](s64), [[COPY1]](s64), [[COPY2]](s64), [[COPY3]](s64)
; CHECK-NEXT: RET_ReallyLR implicit [[BUILD_VECTOR]](<4 x s64>)
%0:_(s64) = COPY $x0
%1:_(s64) = COPY $x1
%2:_(s64) = COPY $x2
%3:_(s64) = COPY $x3
%4:_(<2 x s64>) = G_BUILD_VECTOR %0(s64), %1
%5:_(<2 x s64>) = G_BUILD_VECTOR %2(s64), %3
%6:_(<4 x s64>) = G_CONCAT_VECTORS %4(<2 x s64>), %5
RET_ReallyLR implicit %6
...
# Same test as concat_to_build_vector but with pointer types.
---
name: concat_to_build_vector_ptr
tracksRegLiveness: true
body: |
bb.1:
liveins: $x0, $x1, $x2, $x3
; CHECK-LABEL: name: concat_to_build_vector_ptr
; CHECK: liveins: $x0, $x1, $x2, $x3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(p0) = COPY $x1
; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(p0) = COPY $x2
; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(p0) = COPY $x3
; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x p0>) = G_BUILD_VECTOR [[COPY]](p0), [[COPY1]](p0), [[COPY2]](p0), [[COPY3]](p0)
; CHECK-NEXT: RET_ReallyLR implicit [[BUILD_VECTOR]](<4 x p0>)
%0:_(p0) = COPY $x0
%1:_(p0) = COPY $x1
%2:_(p0) = COPY $x2
%3:_(p0) = COPY $x3
%4:_(<2 x p0>) = G_BUILD_VECTOR %0(p0), %1
%5:_(<2 x p0>) = G_BUILD_VECTOR %2(p0), %3
%6:_(<4 x p0>) = G_CONCAT_VECTORS %4(<2 x p0>), %5
RET_ReallyLR implicit %6
...
# Check that we canonicalize concat_vectors(undef, undef) into undef.
---
name: concat_to_undef
tracksRegLiveness: true
body: |
bb.1:
; CHECK-LABEL: name: concat_to_undef
; CHECK: [[DEF:%[0-9]+]]:_(<4 x s64>) = G_IMPLICIT_DEF
; CHECK-NEXT: RET_ReallyLR implicit [[DEF]](<4 x s64>)
%4:_(<2 x s64>) = G_IMPLICIT_DEF
%5:_(<2 x s64>) = G_IMPLICIT_DEF
%6:_(<4 x s64>) = G_CONCAT_VECTORS %4(<2 x s64>), %5
RET_ReallyLR implicit %6
...
# Check that when combining concat_vectors(build_vector, undef) into
# build_vector, we correctly break the undef vector into a sequence
# of undef scalar.
---
name: concat_to_build_vector_with_undef
tracksRegLiveness: true
body: |
bb.1:
liveins: $x0, $x1
; CHECK-LABEL: name: concat_to_build_vector_with_undef
; CHECK: liveins: $x0, $x1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
; CHECK-NEXT: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x s64>) = G_BUILD_VECTOR [[COPY]](s64), [[COPY1]](s64), [[DEF]](s64), [[DEF]](s64)
; CHECK-NEXT: RET_ReallyLR implicit [[BUILD_VECTOR]](<4 x s64>)
%0:_(s64) = COPY $x0
%1:_(s64) = COPY $x1
%4:_(<2 x s64>) = G_BUILD_VECTOR %0(s64), %1
%5:_(<2 x s64>) = G_IMPLICIT_DEF
%6:_(<4 x s64>) = G_CONCAT_VECTORS %4(<2 x s64>), %5
RET_ReallyLR implicit %6
...
# Same as concat_to_build_vector_with_undef but with pointer types.
---
name: concat_to_build_vector_with_undef_ptr
tracksRegLiveness: true
body: |
bb.1:
liveins: $x0, $x1
; CHECK-LABEL: name: concat_to_build_vector_with_undef_ptr
; CHECK: liveins: $x0, $x1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(p0) = COPY $x1
; CHECK-NEXT: [[DEF:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x p0>) = G_BUILD_VECTOR [[COPY]](p0), [[COPY1]](p0), [[DEF]](p0), [[DEF]](p0)
; CHECK-NEXT: RET_ReallyLR implicit [[BUILD_VECTOR]](<4 x p0>)
%0:_(p0) = COPY $x0
%1:_(p0) = COPY $x1
%4:_(<2 x p0>) = G_BUILD_VECTOR %0(p0), %1
%5:_(<2 x p0>) = G_IMPLICIT_DEF
%6:_(<4 x p0>) = G_CONCAT_VECTORS %4(<2 x p0>), %5
RET_ReallyLR implicit %6
...
# Check that we keep a concat_vectors as soon as one of the operand is
# not undef or build_vector. I.e., we cannot flatten the concat_vectors.
---
name: concat_to_build_vector_negative_test
tracksRegLiveness: true
body: |
bb.1:
liveins: $q0
; CHECK-LABEL: name: concat_to_build_vector_negative_test
; CHECK: liveins: $q0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s64>) = COPY $q0
; CHECK-NEXT: [[DEF:%[0-9]+]]:_(<2 x s64>) = G_IMPLICIT_DEF
; CHECK-NEXT: [[CONCAT_VECTORS:%[0-9]+]]:_(<4 x s64>) = G_CONCAT_VECTORS [[COPY]](<2 x s64>), [[DEF]](<2 x s64>)
; CHECK-NEXT: RET_ReallyLR implicit [[CONCAT_VECTORS]](<4 x s64>)
%4:_(<2 x s64>) = COPY $q0
%5:_(<2 x s64>) = G_IMPLICIT_DEF
%6:_(<4 x s64>) = G_CONCAT_VECTORS %4(<2 x s64>), %5
RET_ReallyLR implicit %6
...
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