; RUN: llc -mcpu=cyclone -debug-only=machine-scheduler < %s 2>&1 | FileCheck %s --check-prefixes=COMMON,SDAG
; RUN: llc -mcpu=cyclone -global-isel -debug-only=machine-scheduler < %s 2>&1 | FileCheck %s --check-prefixes=COMMON,GISEL
; REQUIRES: asserts
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios7.0.0"
define void @caller2(ptr %a0, ptr %a1, ptr %a2, ptr %a3, ptr %a4, ptr %a5, ptr %a6, ptr %a7, ptr %a8, ptr %a9) {
entry:
tail call void @callee2(ptr %a1, ptr %a2, ptr %a3, ptr %a4, ptr %a5, ptr %a6, ptr %a7, ptr %a8, ptr %a9, ptr %a0)
ret void
}
declare void @callee2(ptr, ptr, ptr, ptr, ptr,
ptr, ptr, ptr, ptr, ptr)
; Make sure there is a dependence between the load and store to the same stack
; location during a tail call. Tail calls clobber the incoming argument area and
; therefore it is not safe to assume argument locations are invariant.
; PR23459 has a test case that we where miscompiling because of this at the
; time.
; COMMON: Frame Objects
; COMMON: fi#-4: {{.*}} fixed, at location [SP+8]
; COMMON: fi#-3: {{.*}} fixed, at location [SP]
; COMMON: fi#-2: {{.*}} fixed, at location [SP+8]
; COMMON: fi#-1: {{.*}} fixed, at location [SP]
; The order that these appear in differes in GISel than SDAG, but the
; dependency relationship still holds.
; COMMON: [[VRA:%.*]]:gpr64 = LDRXui %fixed-stack.3
; COMMON: [[VRB:%.*]]:gpr64 = LDRXui %fixed-stack.2
; SDAG: STRXui %{{.*}}, %fixed-stack.0
; SDAG: STRXui [[VRB]]{{[^,]*}}, %fixed-stack.1
; GISEL: STRXui [[VRB]]{{[^,]*}}, %fixed-stack.1
; GISEL: STRXui %{{.*}}, %fixed-stack.0
; Make sure that there is an dependence edge between fi#-2 and fi#-4.
; Without this edge the scheduler would be free to move the store accross the load.
; COMMON: {{^SU(.*)}}: [[VRB]]:gpr64 = LDRXui %fixed-stack.2
; COMMON-NOT: {{^SU(.*)}}:
; COMMON: Successors:
; COMMON: SU([[DEPSTOREB:.*]]): Ord Latency=0
; COMMON: SU([[DEPSTOREA:.*]]): Ord Latency=0
; GlobalISel outputs DEPSTOREB before DEPSTOREA, but the dependency relationship
; still holds.
; SDAG: SU([[DEPSTOREA]]): STRXui %{{.*}}, %fixed-stack.0
; SDAG: SU([[DEPSTOREB]]): STRXui %{{.*}}, %fixed-stack.1
; GISEL: SU([[DEPSTOREB]]): STRXui %{{.*}}, %fixed-stack.0
; GISEL: SU([[DEPSTOREA]]): STRXui %{{.*}}, %fixed-stack.1
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