test/CodeGen/X86/machine-cp-mask-reg.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc %s -mtriple=x86_64-unknown-linux-gnu -mcpu=skx -run-pass=machine-cp -o - | FileCheck %s

# machine-cp previously asserted trying to determine if the k0->eax copy below
# could be combined with the k0->rax copy.

--- |
  ; ModuleID = 'test.ll'
  source_filename = "test.ll"
  target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"

  define i8 @foo(<64 x i8> %x, i64* %y, i64 %z) #0 {
    %a = icmp eq <64 x i8> %x, zeroinitializer
    %b = bitcast <64 x i1> %a to i64
    %c = add i64 %b, %z
    store i64 %c, i64* %y, align 8
    %d = extractelement <64 x i1> %a, i32 0
    %e = zext i1 %d to i8
    ret i8 %e
  }

  attributes #0 = { "target-cpu"="skx" }

...
---
name:            foo
alignment:       16
tracksRegLiveness: true
liveins:
  - { reg: '$zmm0' }
  - { reg: '$rdi' }
  - { reg: '$rsi' }
frameInfo:
  maxAlignment:    1
machineFunctionInfo: {}
body:             |
  bb.0 (%ir-block.0):
    liveins: $rdi, $rsi, $zmm0

    ; CHECK-LABEL: name: foo
    ; CHECK: liveins: $rdi, $rsi, $zmm0
    ; CHECK: renamable $k0 = VPTESTNMBZrr killed renamable $zmm0, renamable $zmm0
    ; CHECK: renamable $rax = COPY renamable $k0
    ; CHECK: renamable $rsi = ADD64rr killed renamable $rsi, killed renamable $rax, implicit-def dead $eflags
    ; CHECK: MOV64mr killed renamable $rdi, 1, $noreg, 0, $noreg, killed renamable $rsi :: (store 8 into %ir.y)
    ; CHECK: renamable $eax = COPY killed renamable $k0
    ; CHECK: renamable $al = AND8ri renamable $al, 1, implicit-def dead $eflags, implicit killed $eax, implicit-def $eax
    ; CHECK: $al = KILL renamable $al, implicit killed $eax
    ; CHECK: RET 0, $al
    renamable $k0 = VPTESTNMBZrr killed renamable $zmm0, renamable $zmm0
    renamable $rax = COPY renamable $k0
    renamable $rsi = ADD64rr killed renamable $rsi, killed renamable $rax, implicit-def dead $eflags
    MOV64mr killed renamable $rdi, 1, $noreg, 0, $noreg, killed renamable $rsi :: (store 8 into %ir.y)
    renamable $eax = COPY killed renamable $k0
    renamable $al = AND8ri renamable $al, 1, implicit-def dead $eflags, implicit killed $eax, implicit-def $eax
    $al = KILL renamable $al, implicit killed $eax
    RET 0, $al

...