test/CodeGen/AVR/pseudo/SUBWRdRr.mir

# RUN: llc -O0 -run-pass=avr-expand-pseudo %s -o - | FileCheck %s

# This test checks the expansion of the 16-bit subtraction pseudo instruction.

--- |
  target triple = "avr--"
  define void @test_subwrdrr() {
  entry:
    ret void
  }
...

---
name:            test_subwrdrr
body: |
  bb.0.entry:

    ; CHECK-LABEL: test_subwrdrr

    ; CHECK:      %r14 = SUBRdRr %r14, %r20, implicit-def %sreg
    ; CHECK-NEXT: %r15 = SBCRdRr %r15, %r21, implicit-def %sreg, implicit killed %sreg

    %r15r14 = SUBWRdRr %r15r14, %r21r20, implicit-def %sreg
...