third_party/llvm-7.0/llvm/test/CodeGen/AArch64/aarch64-combine-fmul-fsub.mir

# RUN: llc -run-pass=machine-combiner -o - -mtriple=aarch64-unknown-linux -mcpu=cortex-a57 -enable-unsafe-fp-math -machine-combiner-verify-pattern-order=true %s | FileCheck --check-prefixes=UNPROFITABLE,ALL %s
# RUN: llc -run-pass=machine-combiner -o - -mtriple=aarch64-unknown-linux -mcpu=falkor -enable-unsafe-fp-math %s -machine-combiner-verify-pattern-order=true | FileCheck --check-prefixes=PROFITABLE,ALL %s
# RUN: llc -run-pass=machine-combiner -o - -mtriple=aarch64-unknown-linux -mcpu=exynos-m1 -enable-unsafe-fp-math -machine-combiner-verify-pattern-order=true %s | FileCheck --check-prefixes=PROFITABLE,ALL %s
# RUN: llc -run-pass=machine-combiner -o - -mtriple=aarch64-unknown-linux -mcpu=thunderx2t99 -enable-unsafe-fp-math -machine-combiner-verify-pattern-order=true %s | FileCheck --check-prefixes=PROFITABLE,ALL %s
#
name:            f1_2s
registers:
  - { id: 0, class: fpr64 }
  - { id: 1, class: fpr64 }
  - { id: 2, class: fpr64 }
  - { id: 3, class: fpr64 }
  - { id: 4, class: fpr64 }
body:             |
  bb.0.entry:
    %2:fpr64 = COPY $d2
    %1:fpr64 = COPY $d1
    %0:fpr64 = COPY $d0
    %3:fpr64 = FMULv2f32 %0, %1
    %4:fpr64 = FSUBv2f32 killed %3, %2
    $d0 = COPY %4
    RET_ReallyLR implicit $d0

...
# UNPROFITABLE-LABEL: name: f1_2s
# UNPROFITABLE: %3:fpr64 = FMULv2f32 %0, %1
# UNPROFITABLE-NEXT: FSUBv2f32 killed %3, %2
#
# PROFITABLE-LABEL: name: f1_2s
# PROFITABLE: [[R1:%[0-9]+]]:fpr64 = FNEGv2f32 %2
# PROFITABLE-NEXT: FMLAv2f32 killed [[R1]], %0, %1
---
name:            f1_4s
registers:
  - { id: 0, class: fpr128 }
  - { id: 1, class: fpr128 }
  - { id: 2, class: fpr128 }
  - { id: 3, class: fpr128 }
  - { id: 4, class: fpr128 }
body:             |
  bb.0.entry:
    %2:fpr128 = COPY $q2
    %1:fpr128 = COPY $q1
    %0:fpr128 = COPY $q0
    %3:fpr128 = FMULv4f32 %0, %1
    %4:fpr128 = FSUBv4f32 killed %3, %2
    $q0 = COPY %4
    RET_ReallyLR implicit $q0

...
# UNPROFITABLE-LABEL: name: f1_4s
# UNPROFITABLE: %3:fpr128 = FMULv4f32 %0, %1
# UNPROFITABLE-NEXT: FSUBv4f32 killed %3, %2
#
# PROFITABLE-LABEL: name: f1_4s
# PROFITABLE: [[R1:%[0-9]+]]:fpr128 = FNEGv4f32 %2
# PROFITABLE-NEXT: FMLAv4f32 killed [[R1]], %0, %1
---
name:            f1_2d
registers:
  - { id: 0, class: fpr128 }
  - { id: 1, class: fpr128 }
  - { id: 2, class: fpr128 }
  - { id: 3, class: fpr128 }
  - { id: 4, class: fpr128 }
body:             |
  bb.0.entry:
    %2:fpr128 = COPY $q2
    %1:fpr128 = COPY $q1
    %0:fpr128 = COPY $q0
    %3:fpr128 = FMULv2f64 %0, %1
    %4:fpr128 = FSUBv2f64 killed %3, %2
    $q0 = COPY %4
    RET_ReallyLR implicit $q0

...
# UNPROFITABLE-LABEL: name: f1_2d
# UNPROFITABLE: %3:fpr128 = FMULv2f64 %0, %1
# UNPROFITABLE-NEXT: FSUBv2f64 killed %3, %2
#
# PROFITABLE-LABEL: name: f1_2d
# PROFITABLE: [[R1:%[0-9]+]]:fpr128 = FNEGv2f64 %2
# PROFITABLE-NEXT: FMLAv2f64 killed [[R1]], %0, %1
---
name:            f1_both_fmul_2s
registers:
  - { id: 0, class: fpr64 }
  - { id: 1, class: fpr64 }
  - { id: 2, class: fpr64 }
  - { id: 3, class: fpr64 }
  - { id: 4, class: fpr64 }
  - { id: 5, class: fpr64 }
  - { id: 6, class: fpr64 }
body:             |
  bb.0.entry:
    %3:fpr64 = COPY $q3
    %2:fpr64 = COPY $q2
    %1:fpr64 = COPY $q1
    %0:fpr64 = COPY $q0
    %4:fpr64 = FMULv2f32 %0, %1
    %5:fpr64 = FMULv2f32 %2, %3
    %6:fpr64 = FSUBv2f32 killed %4, %5
    $q0 = COPY %6
    RET_ReallyLR implicit $q0

...
# ALL-LABEL: name: f1_both_fmul_2s
# ALL: %4:fpr64 = FMULv2f32 %0, %1
# ALL-NEXT: FMLSv2f32 killed %4, %2, %3
---
name:            f1_both_fmul_4s
registers:
  - { id: 0, class: fpr128 }
  - { id: 1, class: fpr128 }
  - { id: 2, class: fpr128 }
  - { id: 3, class: fpr128 }
  - { id: 4, class: fpr128 }
  - { id: 5, class: fpr128 }
  - { id: 6, class: fpr128 }
body:             |
  bb.0.entry:
    %3:fpr128 = COPY $q3
    %2:fpr128 = COPY $q2
    %1:fpr128 = COPY $q1
    %0:fpr128 = COPY $q0
    %4:fpr128 = FMULv4f32 %0, %1
    %5:fpr128 = FMULv4f32 %2, %3
    %6:fpr128 = FSUBv4f32 killed %4, %5
    $q0 = COPY %6
    RET_ReallyLR implicit $q0

...
# ALL-LABEL: name: f1_both_fmul_4s
# ALL: %4:fpr128 = FMULv4f32 %0, %1
# ALL-NEXT: FMLSv4f32 killed %4, %2, %3
---
name:            f1_both_fmul_2d
registers:
  - { id: 0, class: fpr128 }
  - { id: 1, class: fpr128 }
  - { id: 2, class: fpr128 }
  - { id: 3, class: fpr128 }
  - { id: 4, class: fpr128 }
  - { id: 5, class: fpr128 }
  - { id: 6, class: fpr128 }
body:             |
  bb.0.entry:
    %3:fpr128 = COPY $q3
    %2:fpr128 = COPY $q2
    %1:fpr128 = COPY $q1
    %0:fpr128 = COPY $q0
    %4:fpr128 = FMULv2f64 %0, %1
    %5:fpr128 = FMULv2f64 %2, %3
    %6:fpr128 = FSUBv2f64 killed %4, %5
    $q0 = COPY %6
    RET_ReallyLR implicit $q0

...
# ALL-LABEL: name: f1_both_fmul_2d
# ALL: %4:fpr128 = FMULv2f64 %0, %1
# ALL-NEXT: FMLSv2f64 killed %4, %2, %3