test/CodeGen/PowerPC/botheightreduce.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr9 -run-pass=machine-scheduler -o - %s | FileCheck %s
---
# Check that machine-scheduler's BotHeightReduce heuristic puts the LD 8 in
# between the final run of MULLDs and the LDXs that feed them, to try to hide
# the latency of the LDXs.
name: test
tracksRegLiveness: true
body: |
  ; CHECK-LABEL: name: test
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   liveins: $x3, $x4
  ; CHECK:   [[COPY:%[0-9]+]]:g8rc_and_g8rc_nox0 = COPY $x4
  ; CHECK:   [[COPY1:%[0-9]+]]:g8rc_and_g8rc_nox0 = COPY $x3
  ; CHECK:   [[ADDI8_:%[0-9]+]]:g8rc_and_g8rc_nox0 = ADDI8 [[COPY1]], 1
  ; CHECK:   [[CMPLDI:%[0-9]+]]:crrc = CMPLDI [[COPY]], 1
  ; CHECK:   [[LI8_:%[0-9]+]]:g8rc_and_g8rc_nox0 = LI8 1
  ; CHECK:   [[ISEL8_:%[0-9]+]]:g8rc = ISEL8 [[COPY]], [[LI8_]], [[CMPLDI]].sub_gt
  ; CHECK:   MTCTR8loop [[ISEL8_]], implicit-def dead $ctr8
  ; CHECK:   [[LI8_1:%[0-9]+]]:g8rc = LI8 0
  ; CHECK:   [[LI8_2:%[0-9]+]]:g8rc = LI8 2
  ; CHECK:   [[LI8_3:%[0-9]+]]:g8rc = LI8 3
  ; CHECK:   [[LI8_4:%[0-9]+]]:g8rc = LI8 5
  ; CHECK:   [[LI8_5:%[0-9]+]]:g8rc = LI8 6
  ; CHECK:   [[LI8_6:%[0-9]+]]:g8rc = LI8 7
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; CHECK:   [[LD:%[0-9]+]]:g8rc = LD 0, [[ADDI8_]] :: (load 8)
  ; CHECK:   [[LDX:%[0-9]+]]:g8rc = LDX [[ADDI8_]], [[LI8_]] :: (load 8)
  ; CHECK:   [[LDX1:%[0-9]+]]:g8rc = LDX [[ADDI8_]], [[LI8_3]] :: (load 8)
  ; CHECK:   [[LD1:%[0-9]+]]:g8rc = LD 4, [[ADDI8_]] :: (load 8)
  ; CHECK:   [[LDX2:%[0-9]+]]:g8rc = LDX [[ADDI8_]], [[LI8_4]] :: (load 8)
  ; CHECK:   [[LDX3:%[0-9]+]]:g8rc = LDX [[ADDI8_]], [[LI8_5]] :: (load 8)
  ; CHECK:   [[LDX4:%[0-9]+]]:g8rc = LDX [[ADDI8_]], [[LI8_6]] :: (load 8)
  ; CHECK:   [[LD2:%[0-9]+]]:g8rc = LD 8, [[ADDI8_]] :: (load 8)
  ; CHECK:   [[MULLD:%[0-9]+]]:g8rc = MULLD [[LDX]], [[LD]]
  ; CHECK:   [[LDX5:%[0-9]+]]:g8rc = LDX [[ADDI8_]], [[LI8_2]] :: (load 8)
  ; CHECK:   [[ADDI8_1:%[0-9]+]]:g8rc = ADDI8 [[ADDI8_]], 1
  ; CHECK:   [[MULLD1:%[0-9]+]]:g8rc = MULLD [[MULLD]], [[LDX5]]
  ; CHECK:   [[MULLD2:%[0-9]+]]:g8rc = MULLD [[MULLD1]], [[LDX1]]
  ; CHECK:   [[MULLD3:%[0-9]+]]:g8rc = MULLD [[MULLD2]], [[LD1]]
  ; CHECK:   [[MULLD4:%[0-9]+]]:g8rc = MULLD [[MULLD3]], [[LDX2]]
  ; CHECK:   [[MULLD5:%[0-9]+]]:g8rc = MULLD [[MULLD4]], [[LDX3]]
  ; CHECK:   [[MULLD6:%[0-9]+]]:g8rc = MULLD [[MULLD5]], [[LDX4]]
  ; CHECK:   [[MADDLD8_:%[0-9]+]]:g8rc = MADDLD8 [[MULLD6]], [[LD2]], [[MADDLD8_]]
  ; CHECK:   [[COPY2:%[0-9]+]]:g8rc_and_g8rc_nox0 = COPY [[ADDI8_1]]
  ; CHECK:   BDNZ8 %bb.1, implicit-def dead $ctr8, implicit $ctr8
  ; CHECK:   B %bb.2
  ; CHECK: bb.2:
  bb.0:
    liveins: $x3, $x4

    %0:g8rc_and_g8rc_nox0 = COPY $x4
    %1:g8rc_and_g8rc_nox0 = COPY $x3
    %2:g8rc_and_g8rc_nox0 = ADDI8 %1, 1
    %3:crrc = CMPLDI %0, 1
    %4:g8rc_and_g8rc_nox0 = LI8 1
    %5:g8rc = ISEL8 %0, %4, %3.sub_gt
    MTCTR8loop %5, implicit-def dead $ctr8
    %6:g8rc = LI8 0
    %7:g8rc = LI8 2
    %8:g8rc = LI8 3
    %9:g8rc = LI8 5
    %10:g8rc = LI8 6
    %11:g8rc = LI8 7

  bb.1:
    %12:g8rc = ADDI8 %2, 1
    %13:g8rc = LD 0, %2 :: (load 8)
    %14:g8rc = LDX %2, %4 :: (load 8)
    %16:g8rc = LDX %2, %8 :: (load 8)
    %17:g8rc = LD 4, %2 :: (load 8)
    %18:g8rc = LDX %2, %9 :: (load 8)
    %19:g8rc = LDX %2, %10 :: (load 8)
    %20:g8rc = LDX %2, %11 :: (load 8)
    %21:g8rc = LD 8, %2 :: (load 8)
    %22:g8rc = MULLD %14, %13
    %15:g8rc = LDX %2, %7 :: (load 8)
    %23:g8rc = MULLD %22, %15
    %24:g8rc = MULLD %23, %16
    %25:g8rc = MULLD %24, %17
    %26:g8rc = MULLD %25, %18
    %27:g8rc = MULLD %26, %19
    %28:g8rc = MULLD %27, %20
    %6:g8rc = MADDLD8 %28, %21, %6
    %2:g8rc_and_g8rc_nox0 = COPY %12
    BDNZ8 %bb.1, implicit-def dead $ctr8, implicit $ctr8
    B %bb.2

  bb.2:
...