test/CodeGen/AArch64/machine-outliner-iterative-2.mir

# REQUIRES: asserts
# RUN: llc -mtriple=aarch64-linux-gnu -run-pass=machine-outliner \
# RUN:   -machine-outliner-reruns=0 -verify-machineinstrs %s -o - | FileCheck --check-prefix=ITER1 %s

# RUN: llc -mtriple=aarch64-linux-gnu -run-pass=machine-outliner \
# RUN:   -machine-outliner-reruns=1 -verify-machineinstrs %s -o - | FileCheck --check-prefix=ITER2 %s

# RUN: llc -mtriple=aarch64-linux-gnu -run-pass=machine-outliner \
# RUN:   -machine-outliner-reruns=2 -debug-only=machine-outliner \
# RUN:   -verify-machineinstrs %s -o /dev/null 2>&1  | FileCheck --check-prefix=ITER3 %s

--- |
  declare void @z1(i32, i32)
  declare void @z2(i32, i32, i32)
  define void @a(i32 %p1) { unreachable }
  define void @b(i32 %p1) { unreachable }
...
---
#ITER1-LABEL: name: a
#ITER1:      $w19 = ORRWrs $wzr, killed $w0, 0
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-NEXT: $w1 = ORRWri $wzr, 1
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-NEXT: $w1 = ORRWri $wzr, 1984
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}

#ITER2-LABEL: name: a
#ITER2:      $w19 = ORRWrs $wzr, killed $w0, 0
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-NEXT: $w1 = ORRWri $wzr, 1
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
name:            a
tracksRegLiveness: true
liveins:
  - { reg: '$w0', virtual-reg: '' }
machineFunctionInfo:
  hasRedZone:      false
body:             |
  bb.0:
    liveins: $w0, $lr, $x19

    early-clobber $sp = frame-setup STPXpre killed $x19, killed $lr, $sp, -2 :: (store 8), (store 8)
    $w19 = ORRWrs $wzr, killed $w0, 0
    $w0 = ORRWri $wzr, 0
    $w1 = ORRWri $wzr, 1
    BL @z1, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit-def $sp
    $w1 = ORRWri $wzr, 1
    $w2 = ORRWri $wzr, 1920
    $w0 = ORRWrs $wzr, $w19, 0
    BL @z2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $w2, implicit-def $sp
    $w1 = ORRWri $wzr, 1984
    $w2 = ORRWri $wzr, 1920
    $w0 = ORRWrs $wzr, killed $w19, 0
    BL @z2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $w2, implicit-def $sp
    $w0 = ORRWri $wzr, 0
    $w1 = ORRWri $wzr, 1
    BL @z1, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit-def $sp
    early-clobber $sp, $x19, $lr = frame-destroy LDPXpost $sp, 2 :: (load 8), (load 8)
    RET undef $lr

...
---
#ITER1-LABEL: name: b
#ITER1:      $w19 = ORRWrs $wzr, killed $w0, 0
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-NEXT: $w1 = ORRWri $wzr, 1984
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-NEXT: $w1 = ORRWri $wzr, 1984
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}

#ITER2-LABEL: name: b
#ITER2:      $w19 = ORRWrs $wzr, killed $w0, 0
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-NEXT: BL @OUTLINED_FUNCTION_{{[0-9]+}}
name:            b
tracksRegLiveness: true
liveins:
  - { reg: '$w0', virtual-reg: '' }
machineFunctionInfo:
  hasRedZone:      false
body:             |
  bb.0:
    liveins: $w0, $lr, $x19

    early-clobber $sp = frame-setup STPXpre killed $x19, killed $lr, $sp, -2 :: (store 8), (store 8)
    $w19 = ORRWrs $wzr, killed $w0, 0
    $w0 = ORRWri $wzr, 0
    $w1 = ORRWri $wzr, 1
    BL @z1, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit-def $sp
    $w1 = ORRWri $wzr, 1984
    $w2 = ORRWri $wzr, 1920
    $w0 = ORRWrs $wzr, $w19, 0
    BL @z2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $w2, implicit-def $sp
    $w1 = ORRWri $wzr, 1984
    $w2 = ORRWri $wzr, 1920
    $w0 = ORRWrs $wzr, killed $w19, 0
    BL @z2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $w2, implicit-def $sp
    $w0 = ORRWri $wzr, 0
    $w1 = ORRWri $wzr, 1
    BL @z1, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit-def $sp
    early-clobber $sp, $x19, $lr = frame-destroy LDPXpost $sp, 2 :: (load 8), (load 8)
    RET undef $lr
...

#ITER1-LABEL: name: OUTLINED_FUNCTION_{{[0-9]+}}
#ITER1-LABEL: name: OUTLINED_FUNCTION_{{[0-9]+}}

#ITER2-LABEL: name: OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-LABEL: name: OUTLINED_FUNCTION_{{[0-9]+}}
#ITER2-LABEL: name: OUTLINED_FUNCTION_{{[0-9]+}}

# ITER3: Did not outline on iteration 3 out of 3