llvm/test/CodeGen/AArch64/GlobalISel/legalize-merge-values.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc  -march=aarch64 -O0 -run-pass=legalizer -global-isel-abort=2 %s -o - | FileCheck %s

---
name:            test_merge_s4
body: |
  bb.0:
    ; CHECK-LABEL: name: test_merge_s4
    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 15
    ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[C1]], [[C]]
    ; CHECK: [[C2:%[0-9]+]]:_(s64) = G_CONSTANT i64 4
    ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[AND]], [[C2]](s64)
    ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY [[C1]](s32)
    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
    ; CHECK: [[OR:%[0-9]+]]:_(s32) = G_OR [[AND1]], [[SHL]]
    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[OR]](s32)
    ; CHECK: $x0 = COPY [[ANYEXT]](s64)
    %0:_(s64) = G_CONSTANT i64 0
    %1:_(s4) = G_TRUNC %0

    %2:_(s8) = G_MERGE_VALUES %1, %1
    %3:_(s8) = COPY %2
    %4:_(s64) = G_ANYEXT %3
    $x0 = COPY %4
...
---
name:            test_merge_s16_s8
body: |
  bb.0:

    ; This isn't legal but we don't support widening the destination type.
    ; CHECK-LABEL: name: test_merge_s16_s8
    ; CHECK: %a:_(s32) = COPY $w0
    ; CHECK: %b:_(s32) = COPY $w1
    ; CHECK: %a_t:_(s8) = G_TRUNC %a(s32)
    ; CHECK: %b_t:_(s8) = G_TRUNC %b(s32)
    ; CHECK: %m:_(s16) = G_MERGE_VALUES %a_t(s8), %b_t(s8)
    ; CHECK: %ext:_(s64) = G_ANYEXT %m(s16)
    ; CHECK: $x0 = COPY %ext(s64)
    %a:_(s32) = COPY $w0
    %b:_(s32) = COPY $w1
    %a_t:_(s8) = G_TRUNC %a
    %b_t:_(s8) = G_TRUNC %b

    %m:_(s16) = G_MERGE_VALUES %a_t, %b_t
    %ext:_(s64) = G_ANYEXT %m
    $x0 = COPY %ext
...