# RUN: llc -O0 -mtriple aarch64-apple-ios %s -global-isel -start-after regbankselect \
# RUN:    -stop-before instruction-select -o - | FileCheck --check-prefix=CHECK --check-prefix=OPTNONE %s
# RUN: llc -mtriple aarch64-apple-ios %s -global-isel -start-after regbankselect \
# RUN:   -stop-before instruction-select -o - | FileCheck --check-prefix=CHECK --check-prefix=OPT %s
#
# Check that we are only running the localizer at O0 and that it runs
# between the regbankselect pass and the instruction-select.
# Moreover, check that it does what we expect.
--- |
  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64-apple-ios"
  
  define float @foo(float %arg, i1 %cond) {
    br i1 %cond, label %true, label %false
  
  true:                                             ; preds = %0
    br label %end
  
  false:                                            ; preds = %0
    br label %end
  
  end:                                              ; preds = %false, %true
    %val = phi float [ 1.000000e+00, %true ], [ 2.000000e+00, %false ]
    %res = fadd float %arg, %val
    ret float %res
  }

...
---
# CHECK-LABEL: name: foo
name:            foo
alignment:       2
legalized:       true
regBankSelected: true
tracksRegLiveness: true
registers:
# CHECK: registers:
# CHECK-NEXT: - { id: 0, class: fpr, preferred-register: '' }
# CHECK-NEXT: - { id: 1, class: gpr, preferred-register: '' }
# CHECK-NEXT: - { id: 2, class: fpr, preferred-register: '' }
# CHECK-NEXT: - { id: 3, class: fpr, preferred-register: '' }
# CHECK-NEXT: - { id: 4, class: fpr, preferred-register: '' }
# CHECK-NEXT: - { id: 5, class: fpr, preferred-register: '' }
# The localizer will create two new values to materialize the constants.
# OPTNONE-NEXT:  - { id: 6, class: fpr, preferred-register: '' }
# OPTNONE-NEXT:  - { id: 7, class: fpr, preferred-register: '' }
  - { id: 0, class: fpr }
  - { id: 1, class: gpr }
  - { id: 2, class: fpr }
  - { id: 3, class: fpr }
  - { id: 4, class: fpr }
  - { id: 5, class: fpr }

# First block remains untouched
# CHECK: body
# CHECK:   %4(s32) = G_FCONSTANT float 1.000000e+00
# CHECK:   %5(s32) = G_FCONSTANT float 2.000000e+00

# Second block will get the constant 1.0 when the localizer is enabled.
# CHECK: bb.1.true:
# OPT-NOT: G_FCONSTANT
# OPTNONE: [[FONE:%[0-9]+]](s32) = G_FCONSTANT float 1.000000e+00
# CHECK: G_BR %bb.3.end

# Thrid block will get the constant 2.0 when the localizer is enabled.
# CHECK: bb.2.false:
# OPT-NOT: G_FCONSTANT
# OPTNONE: [[FTWO:%[0-9]+]](s32) = G_FCONSTANT float 2.000000e+00

# CHECK: bb.3.end
# OPTNONE: %2(s32) = PHI [[FONE]](s32), %bb.1.true, [[FTWO]](s32), %bb.2.false
# OPT: %2(s32) = PHI %4(s32), %bb.1.true, %5(s32), %bb.2.false
# CHECK-NEXT: G_FADD %0, %2
body:             |
  bb.0 (%ir-block.0):
    liveins: %s0, %w0

    %0(s32) = COPY %s0
    %1(s1) = COPY %w0
    %4(s32) = G_FCONSTANT float 1.000000e+00
    %5(s32) = G_FCONSTANT float 2.000000e+00
    G_BRCOND %1(s1), %bb.1.true
    G_BR %bb.2.false
  
  bb.1.true:
    G_BR %bb.3.end
  
  bb.2.false:
  
  bb.3.end:
    %2(s32) = PHI %4(s32), %bb.1.true, %5(s32), %bb.2.false
    %3(s32) = G_FADD %0, %2
    %s0 = COPY %3(s32)
    RET_ReallyLR implicit %s0

...