File: select-inc.mir

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llvm-toolchain-11 1%3A11.0.1-2
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# RUN: llc -mtriple=x86_64-linux-gnu                     -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=ALL,INC
# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+slow-incdec -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=ALL,ADD

--- |
  define i8 @test_add_i8(i8 %arg1) {
    %ret = add i8 %arg1, 1
    ret i8 %ret
  }
...

---
name:            test_add_i8
legalized:       true
regBankSelected: true
# ALL:      registers:
# ALL-NEXT:  - { id: 0, class: gr8, preferred-register: '' }
# INC-NEXT:  - { id: 1, class: gpr, preferred-register: '' }
# ADD-NEXT:  - { id: 1, class: gpr, preferred-register: '' }
# ALL-NEXT:  - { id: 2, class: gr8, preferred-register: '' }
registers:
  - { id: 0, class: gpr }
  - { id: 1, class: gpr }
  - { id: 2, class: gpr }
# ALL:      %0:gr8 = COPY $al
# INC-NEXT: %2:gr8 = INC8r %0
# ADD-NEXT: %2:gr8 = ADD8ri %0, 1
body:             |
  bb.1 (%ir-block.0):
    liveins: $al

    %0(s8) = COPY $al
    %1(s8) = G_CONSTANT i8 1
    %2(s8) = G_ADD %0, %1
    $al = COPY %2(s8)

...