postlegalizer-combiner-copy-prop.mir
882 Bytes
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s
...
---
name: postlegalize_copy_prop
legalized: true
tracksRegLiveness: true
body: |
bb.1.entry:
liveins: $x0, $x1
; CHECK-LABEL: name: postlegalize_copy_prop
; CHECK: liveins: $x0, $x1
; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY $x0
; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
; CHECK: [[ADD:%[0-9]+]]:_(s64) = G_ADD [[COPY]], [[COPY1]]
; CHECK: [[ADD1:%[0-9]+]]:_(s64) = G_ADD [[ADD]], [[ADD]]
; CHECK: $x0 = COPY [[ADD1]](s64)
; CHECK: RET_ReallyLR
%0:_(s64) = COPY $x0
%1:_(s64) = COPY $x1
%2:_(s64) = G_ADD %0, %1
%3:_(s64) = COPY %2
%4:_(s64) = G_ADD %3, %3
$x0 = COPY %4
RET_ReallyLR
...