third_party/llvm-7.0/llvm/test/CodeGen/AArch64/GlobalISel/legalize-extracts.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-linux-gnu -O0 -run-pass=legalizer %s -o - | FileCheck %s

---
name:            test_extracts_1
body: |
  bb.0:
    liveins: $w0

    ; Low part of extraction takes entirity of the low register entirely, so
    ; value stored is forwarded directly from first load.

    ; CHECK-LABEL: name: test_extracts_1
    ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x2
    ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY]](p0) :: (load 8, align 16)
    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
    ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY]], [[C]](s64)
    ; CHECK: [[LOAD1:%[0-9]+]]:_(s64) = G_LOAD [[GEP]](p0) :: (load 8)
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY [[LOAD]](s64)
    ; CHECK: G_STORE [[COPY1]](s64), [[COPY]](p0) :: (store 8)
    ; CHECK: RET_ReallyLR
    %0:_(s64) = COPY $x0
    %1:_(s32) = COPY $w1
    %2:_(p0) = COPY $x2
    %3:_(s128) = G_LOAD %2(p0) :: (load 16)
    %4:_(s64) = G_EXTRACT %3(s128), 0
    G_STORE %4(s64), %2(p0) :: (store 8)
    RET_ReallyLR
...

---
name:            test_extracts_2
body: |
  bb.0:
    liveins: $w0

      ; Low extraction wipes takes whole low register. High extraction is real.
    ; CHECK-LABEL: name: test_extracts_2
    ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x2
    ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY]](p0) :: (load 8, align 16)
    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
    ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY]], [[C]](s64)
    ; CHECK: [[LOAD1:%[0-9]+]]:_(s64) = G_LOAD [[GEP]](p0) :: (load 8)
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY [[LOAD]](s64)
    ; CHECK: [[EXTRACT:%[0-9]+]]:_(s32) = G_EXTRACT [[LOAD1]](s64), 0
    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[EXTRACT]](s32)
    ; CHECK: G_STORE [[COPY1]](s64), [[COPY]](p0) :: (store 8)
    ; CHECK: G_STORE [[COPY2]](s32), [[COPY]](p0) :: (store 4)
    ; CHECK: RET_ReallyLR
    %0:_(s64) = COPY $x0
    %1:_(s32) = COPY $w1
    %2:_(p0) = COPY $x2
    %3:_(s128) = G_LOAD %2(p0) :: (load 16)
    %4:_(s64) = G_EXTRACT %3(s128), 0
    %5:_(s32) = G_EXTRACT %3(s128), 64
    G_STORE %4(s64), %2(p0) :: (store 8)
    G_STORE %5(s32), %2(p0) :: (store 4)
    RET_ReallyLR
...

---
name:            test_extracts_3
body: |
  bb.0:
    liveins: $x0, $x1, $x2


    ; CHECK-LABEL: name: test_extracts_3
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
    ; CHECK: [[EXTRACT:%[0-9]+]]:_(s32) = G_EXTRACT [[COPY]](s64), 32
    ; CHECK: [[EXTRACT1:%[0-9]+]]:_(s32) = G_EXTRACT [[COPY1]](s64), 0
    ; CHECK: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[EXTRACT]](s32), [[EXTRACT1]](s32)
    ; CHECK: $x0 = COPY [[MV]](s64)
    ; CHECK: RET_ReallyLR
    %0:_(s64) = COPY $x0
    %1:_(s64) = COPY $x1
    %2:_(s128) = G_MERGE_VALUES %0, %1
    %3:_(s64) = G_EXTRACT %2, 32
    $x0 = COPY %3
    RET_ReallyLR
...

---
name:            test_extracts_4
body: |
  bb.0:
    liveins: $x0, $x1, $x2


    ; CHECK-LABEL: name: test_extracts_4
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
    ; CHECK: [[EXTRACT:%[0-9]+]]:_(s32) = G_EXTRACT [[COPY]](s64), 32
    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[EXTRACT]](s32)
    ; CHECK: $w0 = COPY [[COPY1]](s32)
    ; CHECK: RET_ReallyLR
    %0:_(s64) = COPY $x0
    %1:_(s64) = COPY $x1
    %2:_(s128) = G_MERGE_VALUES %0, %1
    %3:_(s32) = G_EXTRACT %2, 32
    $w0 = COPY %3
    RET_ReallyLR
...