src/llvm-emscripten/test/CodeGen/ARM/misched-int-basic.mir

# RUN: llc -o /dev/null %s -mtriple=arm-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=arm-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=arm-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 = "arm---eabi"

  define i64 @foo(i16 signext %a, i16 signext %b)  {
  entry:
    %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, %c
    %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:gpr = SMULBB %1, %1, pred:14, pred:%noreg; GPR:%2,%1,%1
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(3):   %3:gprnopc = SMLABB %0, %0, %2, pred:14, pred:%noreg; GPRnopc:%3,%0,%0 GPR:%2
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(4):   %4:gprnopc = UXTH %3, 0, pred:14, pred:%noreg; GPRnopc:%4,%3
# CHECK_A9:    Latency    : 1
# CHECK_SWIFT: Latency    : 1
# CHECK_R52:   Latency    : 3
#
# CHECK:       SU(5):   %5:gprnopc = MUL %4, %4, pred:14, pred:%noreg, opt:%noreg; GPRnopc:%5,%4,%4
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(6):   %6:gprnopc = MLA %5, %5, %5, pred:14, pred:%noreg, opt:%noreg; GPRnopc:%6,%5,%5,%5
# CHECK_A9:    Latency    : 2
# CHECK_SWIFT: Latency    : 4
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(7):   %7:gprnopc, %8:gprnopc = UMULL %6, %6, pred:14, pred:%noreg, opt:%noreg; GPRnopc:%7,%8,%6,%6
# CHECK_A9:    Latency    : 3
# CHECK_SWIFT: Latency    : 5
# CHECK_R52:   Latency    : 4
#
# CHECK:       SU(11):   %13:gpr, %14:gprnopc = UMLAL %6, %6, %13, %14, pred:14, pred:%noreg, opt:%noreg; GPR:%13 GPRnopc:%14,%6,%6
# CHECK_SWIFT: Latency    : 7
# CHECK_A9:    Latency    : 3
# CHECK_R52:   Latency    : 4
# CHECK:  ** ScheduleDAGMILive::schedule picking next node
...
---
name:            foo
alignment:       2
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: gprnopc }
  - { id: 1, class: gpr }
  - { id: 2, class: gpr }
  - { id: 3, class: gprnopc }
  - { id: 4, class: gprnopc }
  - { id: 5, class: gprnopc }
  - { id: 6, class: gprnopc }
  - { id: 7, class: gprnopc }
  - { id: 8, class: gprnopc }
  - { id: 9, class: gpr }
  - { id: 10, class: gprnopc }
  - { id: 11, class: gprnopc }
  - { id: 12, class: gprnopc }
  - { id: 13, class: gpr }
  - { id: 14, class: gprnopc }
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 = SMULBB %1, %1, 14, %noreg
    %3 = SMLABB %0, %0, %2, 14, %noreg
    %4 = UXTH %3, 0, 14, %noreg
    %5 = MUL %4, %4, 14, %noreg, %noreg
    %6 = MLA %5, %5, %5, 14, %noreg, %noreg
    %7, %8 = UMULL %6, %6, 14, %noreg, %noreg
    %13, %10 = UMULL %7, %7, 14, %noreg, %noreg
    %11 = MLA %7, %8, %10, 14, %noreg, %noreg
    %14 = MLA %7, %8, %11, 14, %noreg, %noreg
    %13, %14 = UMLAL %6, %6, %13, %14, 14, %noreg, %noreg
    %r0 = COPY %13
    %r1 = COPY %14
    BX_RET 14, %noreg, implicit %r0, implicit %r1

...