test/CodeGen/PowerPC/machine-backward-cp.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O3 -verify-machineinstrs -mtriple=powerpc64le-unknown-unknown \
# RUN: -mcpu=pwr9 -simplify-mir -run-pass=machine-cp %s -o - | FileCheck %s


# Normal case
---
name: test0
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    ; CHECK-LABEL: name: test0
    ; CHECK: $x3 = LI8 1024
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x4 = LI8 1024
    $x3 = COPY renamable killed $x4
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

# Not in terminal BBs
---
name: test1
alignment: 4
tracksRegLiveness: true
body: |
  ; CHECK-LABEL: name: test1
  ; CHECK: bb.0.entry:
  ; CHECK:   renamable $x4 = LI8 42
  ; CHECK:   B %bb.1
  ; CHECK: bb.1:
  ; CHECK:   liveins: $x4
  ; CHECK:   $x3 = COPY killed renamable $x4
  ; CHECK:   BLR8 implicit $lr8, implicit undef $rm, implicit $x3
  bb.0.entry:
    successors: %bb.1

    renamable $x5 = LI8 42
    renamable $x4 = COPY renamable killed $x5
    B %bb.1

  bb.1:
    liveins: $x4
    $x3 = COPY renamable killed $x4
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

# Use reserved register
---
name: test2
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    ; CHECK-LABEL: name: test2
    ; CHECK: renamable $x4 = LI8 1024
    ; CHECK: $x13 = COPY killed renamable $x4
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit undef $x3
    renamable $x4 = LI8 1024
    $x13 = COPY renamable killed $x4
    BLR8 implicit $lr8, implicit undef $rm, implicit undef $x3

...

# Intermediate read of copy's src
---
name: test3
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    ; CHECK-LABEL: name: test3
    ; CHECK: renamable $x4 = LI8 0
    ; CHECK: renamable $x5 = ADDI8 $x4, 1
    ; CHECK: $x3 = COPY killed renamable $x4
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x4 = LI8 0
    renamable $x5 = ADDI8 $x4, 1
    $x3 = COPY renamable killed $x4
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

# Intermediate read of copy's def
---
name: test4
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x3

    ; CHECK-LABEL: name: test4
    ; CHECK: liveins: $x3
    ; CHECK: renamable $x4 = LI8 0
    ; CHECK: renamable $x5 = ADDI8 $x3, 1
    ; CHECK: $x3 = COPY killed renamable $x4
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x4 = LI8 0
    renamable $x5 = ADDI8 $x3, 1
    $x3 = COPY renamable killed $x4
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

# Intermiediate clobber of copy's def
---
name: test5
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x3, $x5

    ; CHECK-LABEL: name: test5
    ; CHECK: liveins: $x3, $x5
    ; CHECK: renamable $x4 = LI8 0
    ; CHECK: renamable $x3 = ADDI8 $x5, 1
    ; CHECK: $x3 = COPY killed renamable $x4
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x4 = LI8 0
    renamable $x3 = ADDI8 $x5, 1
    $x3 = COPY renamable killed $x4
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: iterative_deletion
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x5

    ; CHECK-LABEL: name: iterative_deletion
    ; CHECK: liveins: $x5
    ; CHECK: renamable $x4 = ADDI8 killed renamable $x5, 1
    ; CHECK: $x3 = COPY $x4
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x6 = ADDI8 renamable killed $x5, 1
    renamable $x4 = COPY renamable killed $x6
    renamable $x7 = COPY renamable killed $x4
    $x3 = COPY renamable killed $x7
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: Enter
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x4, $x7
    ; CHECK-LABEL: name: Enter
    ; CHECK: liveins: $x4, $x7
    ; CHECK: renamable $x5 = COPY killed renamable $x7
    ; CHECK: renamable $x7 = ADDI8 killed renamable $x4, 1
    ; CHECK: $x3 = ADD8 killed renamable $x5, killed renamable $x7
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x5 = COPY killed renamable $x7
    renamable $x6 = ADDI8 killed renamable $x4, 1
    renamable $x7 = COPY killed renamable $x6
    $x3 = ADD8 renamable killed $x5, renamable killed $x7
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: foo
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x4, $x7
    ; CHECK-LABEL: name: foo
    ; CHECK: liveins: $x4, $x7
    ; CHECK: renamable $x5 = COPY killed renamable $x7
    ; CHECK: renamable $x7 = ADDI8 renamable $x4, 1
    ; CHECK: renamable $x6 = ADDI8 killed $x4, 2
    ; CHECK: $x3 = ADD8 killed renamable $x5, killed renamable $x6
    ; CHECK: $x3 = ADD8 $x3, killed renamable $x7
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x5 = COPY killed renamable $x7
    renamable $x6 = ADDI8 renamable $x4, 1
    renamable $x7 = COPY killed renamable $x6
    renamable $x8 = ADDI8 killed $x4, 2
    renamable $x6 = COPY killed renamable $x8
    $x3 = ADD8 renamable killed $x5, renamable killed $x6
    $x3 = ADD8 $x3, renamable killed $x7
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: bar
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x4, $x7
    ; CHECK-LABEL: name: bar
    ; CHECK: liveins: $x4, $x7
    ; CHECK: renamable $x5 = COPY killed renamable $x7
    ; CHECK: renamable $x7 = ADDI8 renamable $x4, 1
    ; CHECK: renamable $x8 = COPY killed renamable $x7
    ; CHECK: renamable $x7 = ADDI8 renamable $x5, 2
    ; CHECK: $x3 = ADD8 killed renamable $x5, killed renamable $x7
    ; CHECK: $x3 = ADD8 $x3, killed renamable $x8
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x5 = COPY killed renamable $x7
    renamable $x6 = ADDI8 renamable $x4, 1
    renamable $x7 = COPY killed renamable $x6
    renamable $x8 = COPY killed renamable $x7
    renamable $x6 = ADDI8 renamable $x5, 2
    renamable $x7 = COPY killed renamable $x6
    $x3 = ADD8 renamable killed $x5, renamable killed $x7
    $x3 = ADD8 $x3, renamable killed $x8
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: bogus
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x7
    ; CHECK-LABEL: name: bogus
    ; CHECK: liveins: $x7
    ; CHECK: renamable $x5 = COPY renamable $x7
    ; CHECK: renamable $x4 = ADDI8 $x7, 1
    ; CHECK: renamable $x6 = ADDI8 renamable $x5, 2
    ; CHECK: $x3 = ADD8 killed renamable $x4, killed renamable $x5
    ; CHECK: $x3 = ADD8 $x3, killed renamable $x6
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x5 = COPY killed renamable $x7
    renamable $x6 = ADDI8 renamable $x5, 1
    renamable $x4 = COPY killed renamable $x6
    renamable $x7 = COPY killed renamable $x4
    renamable $x6 = ADDI8 renamable $x5, 2
    renamable $x4 = COPY killed renamable $x7
    $x3 = ADD8 renamable killed $x4, renamable killed $x5
    $x3 = ADD8 $x3, renamable killed $x6
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: foobar
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x7
    ; CHECK-LABEL: name: foobar
    ; CHECK: liveins: $x7
    ; CHECK: renamable $x4 = ADDI8 $x7, 1
    ; CHECK: renamable $x8 = COPY killed renamable $x4
    ; CHECK: renamable $x4 = ADDI8 $x7, 2
    ; CHECK: $x3 = ADD8 killed renamable $x4, $x7
    ; CHECK: $x3 = ADD8 $x3, killed renamable $x8
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x5 = COPY killed renamable $x7
    renamable $x6 = ADDI8 renamable $x5, 1
    renamable $x4 = COPY killed renamable $x6
    renamable $x8 = COPY killed renamable $x4
    renamable $x6 = ADDI8 renamable $x5, 2
    renamable $x4 = COPY killed renamable $x6
    $x3 = ADD8 renamable killed $x4, renamable killed $x5
    $x3 = ADD8 $x3, renamable killed $x8
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3

...

---
name: cross_call
alignment: 4
tracksRegLiveness: true
body: |
  bb.0.entry:
    liveins: $x2, $x3, $x20
    ; CHECK-LABEL: name: cross_call
    ; CHECK: liveins: $x2, $x3, $x20
    ; CHECK: renamable $x20 = LI8 1024
    ; CHECK: BL8_NOP @foo, csr_ppc64_altivec, implicit-def $lr8, implicit $rm, implicit $x3, implicit-def $x3, implicit $x2
    ; CHECK: $x3 = COPY killed renamable $x20
    ; CHECK: BLR8 implicit $lr8, implicit undef $rm, implicit $x3
    renamable $x20 = LI8 1024
    BL8_NOP @foo, csr_ppc64_altivec, implicit-def $lr8, implicit $rm, implicit $x3, implicit-def $x3, implicit $x2
    $x3 = COPY renamable killed $x20
    BLR8 implicit $lr8, implicit undef $rm, implicit $x3
...