llvm/test/CodeGen/PowerPC/expand-isel-9.mir

# This file tests the scenario: ISEL RX, RY, RY, CR  (X != 0 && Y != 0)
# It is folded into a copy (%RX = OR %RY, %RY)
# RUN: llc -ppc-gen-isel=true -run-pass ppc-expand-isel -o - %s | FileCheck %s

--- |
  target datalayout = "E-m:e-i64:64-n32:64"
  target triple = "powerpc64-unknown-linux-gnu"
  define signext i32 @testExpandISEL(i32 signext %i, i32 signext %j) {
  entry:
    %cmp = icmp sgt i32 %i, 0
    %add = add nsw i32 %i, 1
    %cond = select i1 %cmp, i32 %add, i32 %j
    ret i32 %cond
  }

...
---
name:            testExpandISEL
alignment:       2
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
tracksRegLiveness: true
liveins:
  - { reg: '$x3' }
  - { reg: '$x4' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    0
  adjustsStack:    false
  hasCalls:        false
  maxCallFrameSize: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
body:             |
  bb.0.entry:
    liveins: $x3, $x4

    $r5 = ADDI $r3, 1
    $cr0 = CMPWI $r3, 0
    $r3 = ISEL $r4, $r4, $cr0gt
    ; Test fold ISEL to a copy
    ; CHECK: $r3 = OR $r4, $r4

    $x3 = EXTSW_32_64  $r3

...