llvm-project/llvm/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir

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# RUN: llc -O0 %s -o - | FileCheck %s
# This test checks the expansion of the 16-bit LDWRdPtr pseudo instruction.
--- |
target triple = "avr--"
define void @test_ldwrdptr() {
entry:
ret void
}
...
---
name: test_ldwrdptr
tracksRegLiveness: true
body: |
bb.0.entry:
; CHECK-LABEL: test_ldwrdptr
; CHECK: ld [[SCRATCH:r[0-9]+]], Z
; CHECK-NEXT: push [[SCRATCH]]
; CHECK-NEXT: ldd [[SCRATCH]], Z+1
; CHECK-NEXT: mov r31, [[SCRATCH]]
; CHECK-NEXT: pop r30
early-clobber %r31r30 = LDWRdPtr undef %r31r30
...