1 # RUN: llc -o /dev/null %s -mtriple=aarch64-- -run-pass=machine-scheduler -enable-misched -debug-only=machine-scheduler 2>&1 | FileCheck %s
4 define void @func() { ret void }
7 # Check that the instructions are not dependent on each other, even though
8 # they all read/write to the zero register.
9 # CHECK-LABEL: MI Scheduling
10 # CHECK: SU(0): dead $wzr = SUBSWri $w1, 0, 0, implicit-def dead $nzcv
11 # CHECK: # succs left : 0
12 # CHECK-NOT: Successors:
13 # CHECK: SU(1): $w2 = COPY $wzr
14 # CHECK: # succs left : 0
15 # CHECK-NOT: Successors:
16 # CHECK: SU(2): dead $wzr = SUBSWri $w3, 0, 0, implicit-def dead $nzcv
17 # CHECK: # succs left : 0
18 # CHECK-NOT: Successors:
19 # CHECK: SU(3): $w4 = COPY $wzr
20 # CHECK: # succs left : 0
21 # CHECK-NOT: Successors:
25 dead $wzr = SUBSWri $w1, 0, 0, implicit-def dead $nzcv
27 dead $wzr = SUBSWri $w3, 0, 0, implicit-def dead $nzcv