1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
; REQUIRES: asserts
; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=cortex-a57 -enable-misched=0 -debug-only=misched -o - 2>&1 > /dev/null | FileCheck %s
; REQUIRES: asserts
@G = external global [0 x i32], align 4
; Check that MMOs are added to epilogue calle-save restore loads so
; that the store to G is not considered dependant on the callee-save
; loads.
;
; CHECK: Before post-MI-sched:
; CHECK-LABEL: # Machine code for function test1:
; CHECK: SU(2): STRWui %WZR
; CHECK: SU(3): %X21<def>, %X20<def> = LDPXi %SP
; CHECK: Predecessors:
; CHECK-NEXT: out SU(0)
; CHECK-NEXT: out SU(0)
; CHECK-NEXT: ch SU(0)
; CHECK-NEXT: Successors:
define void @test1() {
entry:
tail call void asm sideeffect "nop", "~{x20},~{x21},~{x22},~{x23}"() nounwind
store i32 0, i32* getelementptr inbounds ([0 x i32], [0 x i32]* @G, i64 0, i64 0), align 4
ret void
}
|
