1 ; RUN: llc -mcpu=cyclone -debug-only=machine-scheduler < %s 2>&1 | FileCheck %s
5 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
6 target triple = "arm64-apple-ios7.0.0"
8 define void @caller2(i8* %a0, i8* %a1, i8* %a2, i8* %a3, i8* %a4, i8* %a5, i8* %a6, i8* %a7, i8* %a8, i8* %a9) {
10 tail call void @callee2(i8* %a1, i8* %a2, i8* %a3, i8* %a4, i8* %a5, i8* %a6, i8* %a7, i8* %a8, i8* %a9, i8* %a0)
14 declare void @callee2(i8*, i8*, i8*, i8*, i8*,
15 i8*, i8*, i8*, i8*, i8*)
17 ; Make sure there is a dependence between the load and store to the same stack
18 ; location during a tail call. Tail calls clobber the incoming argument area and
19 ; therefore it is not safe to assume argument locations are invariant.
20 ; PR23459 has a test case that we where miscompiling because of this at the
23 ; CHECK: Frame Objects
24 ; CHECK: fi#-4: {{.*}} fixed, at location [SP+8]
25 ; CHECK: fi#-3: {{.*}} fixed, at location [SP]
26 ; CHECK: fi#-2: {{.*}} fixed, at location [SP+8]
27 ; CHECK: fi#-1: {{.*}} fixed, at location [SP]
29 ; CHECK: [[VRA:%.*]]:gpr64 = LDRXui %fixed-stack.3
30 ; CHECK: [[VRB:%.*]]:gpr64 = LDRXui %fixed-stack.2
31 ; CHECK: STRXui %{{.*}}, %fixed-stack.0
32 ; CHECK: STRXui [[VRB]]{{[^,]*}}, %fixed-stack.1
34 ; Make sure that there is an dependence edge between fi#-2 and fi#-4.
35 ; Without this edge the scheduler would be free to move the store accross the load.
37 ; CHECK: SU({{.*}}): [[VRB]]:gpr64 = LDRXui %fixed-stack.2
40 ; CHECK: SU([[DEPSTOREB:.*]]): Ord Latency=0
41 ; CHECK: SU([[DEPSTOREA:.*]]): Ord Latency=0
43 ; CHECK: SU([[DEPSTOREA]]): STRXui %{{.*}}, %fixed-stack.0
44 ; CHECK: SU([[DEPSTOREB]]): STRXui %{{.*}}, %fixed-stack.1