llvm/test/CodeGen/PowerPC/setcr_bc3.mir

# RUN: llc -verify-machineinstrs -start-before=ppc-pre-emit-peephole %s -o - | FileCheck %s
--- |
  target datalayout = "e-m:e-i64:64-n32:64"
  target triple = "powerpc64le-unknown-linux-gnu"

  declare signext i32 @callee(i32 signext)

  define signext i32 @func(i32 signext %v) {
    ret i32 0
  }
...
---
name:            func
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
registers:
liveins:
  - { reg: '$x3', virtual-reg: '' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       48
  offsetAdjustment: 0
  maxAlignment:    0
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  maxCallFrameSize: 32
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:
  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
      callee-saved-register: '$x30', callee-saved-restored: true, debug-info-variable: '', 
      debug-info-expression: '', debug-info-location: '' }
stack:
constants:

body:             |
  bb.0:
    successors: %bb.2(0x30000000), %bb.1(0x50000000)
    liveins: $x3, $x30

    ; bc should be converted into b
    ; CHECK-LABEL: func
    ; CHECK: # %bb.1
    ; CHECK: creqv
    ; CHECK-NOT: bc
    ; CHECK: b .LBB0_3
    ; CHECK: .LBB0_2

    $x0 = MFLR8 implicit $lr8
    STD killed $x0, 16, $x1
    $x1 = STDU $x1, -48, $x1
    STD killed $x30, 32, $x1 :: (store (s64) into %fixed-stack.0, align 16)
    $x30 = OR8 $x3, $x3
    BL8_NOP @callee, csr_ppc64_altivec, implicit-def dead $lr8, implicit $rm, implicit killed $x3, implicit $x2, implicit-def $r1, implicit-def $x3
    renamable $cr0 = CMPLWI renamable $r3, 0
    BCC 76, killed renamable $cr0, %bb.2

  bb.1:
    successors: %bb.5(0x40000000), %bb.2(0x40000000)
    liveins: $x3

    renamable $x3 = EXTSW_32_64 killed renamable $r3, implicit $x3
    BL8_NOP @callee, csr_ppc64_altivec, implicit-def dead $lr8, implicit $rm, implicit killed $x3, implicit $x2, implicit-def $r1, implicit-def $x3
    renamable $cr2un = CRSET
    $cr2gt = CROR $cr2un, $cr2un
    $x30 = OR8 killed $x3, $x3
    BC killed renamable $cr2un, %bb.5
    B %bb.2

  bb.4:
    successors: %bb.5(0x80000000)
    liveins: $x30

    $x3 = LI8 0
    BL8_NOP @callee, csr_ppc64_altivec, implicit-def dead $lr8, implicit $rm, implicit killed $x3, implicit $x2, implicit-def $r1, implicit-def dead $x3

  bb.5:
    liveins: $x30

    renamable $x3 = EXTSW_32_64 killed renamable $r30, implicit $x30
    $x30 = LD 32, $x1 :: (load (s64) from %fixed-stack.0, align 16)
    $x1 = ADDI8 $x1, 48
    $x0 = LD 16, $x1
    MTLR8 killed $x0, implicit-def $lr8
    BLR8 implicit $lr8, implicit $rm, implicit killed $x3

  bb.2:
    successors: %bb.5(0x40000000), %bb.4(0x40000000)
    liveins: $x30

    renamable $cr0 = CMPWI renamable $r30, -1
    BCn killed renamable $cr0gt, %bb.4
    B %bb.5

...