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

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

--- |
  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64--"
  define void @test_scalar_mul_small() {
  entry:
    ret void
  }
  define void @test_smul_overflow() {
    ret void
  }
  define void @test_umul_overflow() {
    ret void
  }
...

---
name:            test_scalar_mul_small
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
  - { id: 3, class: _ }
  - { id: 4, class: _ }
  - { id: 5, class: _ }
body: |
  bb.0.entry:
    liveins: $x0, $x1, $x2, $x3

    ; CHECK-LABEL: name: test_scalar_mul_small
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
    ; CHECK: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[TRUNC]], [[TRUNC1]]
    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[MUL]](s32)
    ; CHECK: $x0 = COPY [[ANYEXT]](s64)
    %0(s64) = COPY $x0
    %1(s64) = COPY $x1
    %2(s8) = G_TRUNC %0
    %3(s8) = G_TRUNC %1
    %4(s8) = G_MUL %2, %3
    %5(s64) = G_ANYEXT %4
    $x0 = COPY %5
...


---
name:            test_smul_overflow
body: |
  bb.0:
    liveins: $x0, $x1, $w2, $w3

    ; CHECK-LABEL: name: test_smul_overflow
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
    ; CHECK: [[MUL:%[0-9]+]]:_(s64) = G_MUL [[COPY]], [[COPY1]]
    ; CHECK: [[SMULH:%[0-9]+]]:_(s64) = G_SMULH [[COPY]], [[COPY1]]
    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 63
    ; CHECK: [[ASHR:%[0-9]+]]:_(s64) = G_ASHR [[MUL]], [[C]]
    ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[SMULH]](s64), [[ASHR]]
    ; CHECK: $x0 = COPY [[MUL]](s64)
    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ICMP]](s32)
    ; CHECK: $w0 = COPY [[COPY2]](s32)
    %0:_(s64) = COPY $x0
    %1:_(s64) = COPY $x1
    %2:_(s64), %3:_(s1) = G_SMULO %0, %1
    $x0 = COPY %2
    %4:_(s32) = G_ANYEXT %3
    $w0 = COPY %4

...


---
name:            test_umul_overflow
body: |
  bb.0:
    liveins: $x0, $x1, $w2, $w3

    ; CHECK-LABEL: name: test_umul_overflow
    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
    ; CHECK: [[MUL:%[0-9]+]]:_(s64) = G_MUL [[COPY]], [[COPY1]]
    ; CHECK: [[UMULH:%[0-9]+]]:_(s64) = G_UMULH [[COPY]], [[COPY1]]
    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
    ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[UMULH]](s64), [[C]]
    ; CHECK: $x0 = COPY [[MUL]](s64)
    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ICMP]](s32)
    ; CHECK: $w0 = COPY [[COPY2]](s32)
    %0:_(s64) = COPY $x0
    %1:_(s64) = COPY $x1
    %2:_(s64), %3:_(s1) = G_UMULO %0, %1
    $x0 = COPY %2
    %4:_(s32) = G_ANYEXT %3
    $w0 = COPY %4

...