third_party/llvm-7.0/llvm/test/CodeGen/ARM/misched-int-basic-thumb2.mir

# Basic machine sched model test for Thumb2 int instructions
# RUN: llc -o /dev/null %s -mtriple=thumbv7-eabi -mcpu=swift -run-pass  machine-scheduler  -enable-misched -verify-misched \
# RUN:  -debug-only=machine-scheduler 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK_SWIFT
# RUN: llc -o /dev/null %s -mtriple=thumbv7--eabi -mcpu=cortex-a9 -run-pass  machine-scheduler  -enable-misched -verify-misched \
# RUN:  -debug-only=machine-scheduler 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK_A9
# RUN: llc -o /dev/null %s -mtriple=thumbv8r-eabi -mcpu=cortex-r52 -run-pass  machine-scheduler  -enable-misched -verify-misched \
# RUN:  -debug-only=machine-scheduler 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK_R52
# REQUIRES: asserts
--- |
  ; ModuleID = 'foo.ll'
  source_filename = "foo.ll"
  target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
  target triple = "thumbv7---eabi"

  @g1 = common global i32 0, align 4
  @g2 = common global i32 0, align 4

  define i64 @foo(i16 signext %a, i16 signext %b) {
  entry:
    %0 = load i32, i32* @g1, align 4
    %1 = load i32, i32* @g2, align 4
    %2 = add nuw nsw i32 %0, %0
    %3 = sdiv i32 %2, %1
    store i32 %3, i32* @g1, align 4
    %d = mul nsw i16 %a, %a
    %e = mul nsw i16 %b, %b
    %f = add nuw nsw i16 %e, %d
    %c = zext i16 %f to i32
    %mul8 = mul nsw i32 %c, %3
    %mul9 = mul nsw i32 %mul8, %mul8
    %add10 = add nuw nsw i32 %mul9, %mul8
    %conv1130 = zext i32 %add10 to i64
    %mul12 = mul nuw nsw i64 %conv1130, %conv1130
    %mul13 = mul nsw i64 %mul12, %mul12
    %add14 = add nuw nsw i64 %mul13, %mul12
    ret i64 %add14
  }
#
# CHECK:       ********** MI Scheduling **********
# CHECK:       SU(2):   %2:rgpr = t2MOVi32imm @g1
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 2
# CHECK_R52:   Latency    : 2
#
# CHECK:       SU(3):   %3:rgpr = t2LDRi12 %2:rgpr, 0, 14, $noreg :: (dereferenceable load 4 from @g1)
# CHECK_A9:    Latency    : 1
# CHECK_SWIFT: Latency    : 3
# CHECK_R52:   Latency    : 4
#
# CHECK :      SU(6):   %6 = t2ADDrr %3:rgpr, %3:rgpr, 14, $noreg, $noreg
# CHECK_A9:    Latency    : 1
# CHECK_SWIFT: Latency    : 1
# CHECK_R52:   Latency    : 3

# CHECK:       SU(7):   %7:rgpr = t2SDIV %6:rgpr, %5:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 0
# CHECK_SWIFT: Latency    : 14
# CHECK_R52:   Latency    : 8

# CHECK:       SU(8):   t2STRi12 %7:rgpr, %2:rgpr, 0, 14, $noreg :: (store 4 into @g1)
# CHECK_A9:    Latency    : 1
# CHECK_SWIFT: Latency    : 0
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(9):   %8:rgpr = t2SMULBB %1:rgpr, %1:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(10):   %9:rgpr = t2SMLABB %0:rgpr, %0:rgpr, %8:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(11):   %10:rgpr = t2UXTH %9:rgpr, 0, 14, $noreg
# CHECK_A9:    Latency    : 1
# CHECK_SWIFT: Latency    : 1
# CHECK_R52:   Latency    : 3
#
# CHECK:       SU(12):   %11:rgpr = t2MUL %10:rgpr, %7:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(13):   %12:rgpr = t2MLA %11:rgpr, %11:rgpr, %11:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(14):   %13:rgpr, %14:rgpr = t2UMULL %12:rgpr, %12:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 3
# CHECK_SWIFT: Latency    : 5
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(18):   %19:rgpr, %20:rgpr = t2UMLAL %12:rgpr, %12:rgpr, %19:rgpr, %20:rgpr, 14, $noreg
# CHECK_A9:    Latency    : 3
# CHECK_SWIFT: Latency    : 7
# CHECK_R52:   Latency    : 4
# CHECK:  ** ScheduleDAGMILive::schedule picking next node
...
---
name:            foo
alignment:       1
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: rgpr }
  - { id: 1, class: rgpr }
  - { id: 2, class: rgpr }
  - { id: 3, class: rgpr }
  - { id: 4, class: rgpr }
  - { id: 5, class: rgpr }
  - { id: 6, class: rgpr }
  - { id: 7, class: rgpr }
  - { id: 8, class: rgpr }
  - { id: 9, class: rgpr }
  - { id: 10, class: rgpr }
  - { id: 11, class: rgpr }
  - { id: 12, class: rgpr }
  - { id: 13, class: rgpr }
  - { id: 14, class: rgpr }
  - { id: 15, class: rgpr }
  - { id: 16, class: rgpr }
  - { id: 17, class: rgpr }
  - { id: 18, class: rgpr }
  - { id: 19, class: rgpr }
  - { id: 20, class: rgpr }
liveins:
  - { reg: '$r0', virtual-reg: '%0' }
  - { reg: '$r1', virtual-reg: '%1' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    0
  adjustsStack:    false
  hasCalls:        false
  maxCallFrameSize: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
body:             |
  bb.0.entry:
    liveins: $r0, $r1

    %1 = COPY $r1
    %0 = COPY $r0
    %2 = t2MOVi32imm @g1
    %3 = t2LDRi12 %2, 0, 14, $noreg :: (dereferenceable load 4 from @g1)
    %4 = t2MOVi32imm @g2
    %5 = t2LDRi12 %4, 0, 14, $noreg :: (dereferenceable load 4 from @g2)
    %6 = t2ADDrr %3, %3, 14, $noreg, $noreg
    %7 = t2SDIV %6, %5, 14, $noreg
    t2STRi12 %7, %2, 0, 14, $noreg :: (store 4 into @g1)
    %8 = t2SMULBB %1, %1, 14, $noreg
    %9 = t2SMLABB %0, %0, %8, 14, $noreg
    %10 = t2UXTH %9, 0, 14, $noreg
    %11 = t2MUL %10, %7, 14, $noreg
    %12 = t2MLA %11, %11, %11, 14, $noreg
    %13, %14 = t2UMULL %12, %12, 14, $noreg
    %19, %16 = t2UMULL %13, %13, 14, $noreg
    %17 = t2MLA %13, %14, %16, 14, $noreg
    %20 = t2MLA %13, %14, %17, 14, $noreg
    %19, %20 = t2UMLAL %12, %12, %19, %20, 14, $noreg
    $r0 = COPY %19
    $r1 = COPY %20
    tBX_RET 14, $noreg, implicit $r0, implicit $r1

...