You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.7 KiB
55 lines
1.7 KiB
# RUN: llc -run-pass=prologepilog %s -o - | FileCheck %s
|
|
|
|
# Make sure we use the correct offset for stack accesses using the base pointer
|
|
# within call frame blocks. Key points of test:
|
|
# + A large SP in ADJCALLSTACKDOWN forces each call to get its own adjustment.
|
|
# + An over-aligned stack variable means that we must use r6 rather than fp
|
|
# to access this variables.
|
|
#
|
|
# Under these circumstances, the ADJCALLSTACKDOWN must not apply to r6 offsets.
|
|
|
|
--- |
|
|
; ModuleID = 'simple.ll'
|
|
source_filename = "simple.ll"
|
|
target datalayout = "e-m:o-p:32:32-i64:64-a:0:32-n32-S128"
|
|
target triple = "thumbv7k-apple-ios"
|
|
|
|
declare void @bar([4 x i32], i32)
|
|
|
|
define void @foo(i32 %n) {
|
|
ret void
|
|
}
|
|
|
|
...
|
|
---
|
|
name: foo
|
|
liveins:
|
|
- { reg: '$r0', virtual-reg: '' }
|
|
frameInfo:
|
|
adjustsStack: true
|
|
hasCalls: true
|
|
maxCallFrameSize: 2276
|
|
stack:
|
|
- { id: 0, name: '', type: spill-slot, offset: 0, alignment: 32, size: 4 }
|
|
constants: []
|
|
body: |
|
|
bb.0 (%ir-block.0):
|
|
liveins: $r0
|
|
|
|
; CHECK: t2STRi12 killed $r0, $r6, [[OFFSET:[0-9]+]]
|
|
t2STRi12 killed $r0, %stack.0, 0, 14, $noreg :: (store 4 into %stack.0)
|
|
|
|
ADJCALLSTACKDOWN 2276, 0, 14, $noreg, implicit-def dead $sp, implicit $sp
|
|
|
|
; CHECK: renamable $r0 = t2LDRi12 $r6, [[OFFSET]]
|
|
renamable $r0 = t2LDRi12 %stack.0, 0, 14, $noreg, :: (load 4 from %stack.0)
|
|
renamable $r1 = IMPLICIT_DEF
|
|
renamable $r2 = IMPLICIT_DEF
|
|
renamable $r3 = IMPLICIT_DEF
|
|
tBL 14, $noreg, @bar, csr_ios, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit killed $r2, implicit killed $r3, implicit-def $sp
|
|
|
|
ADJCALLSTACKUP 2276, 0, 14, $noreg, implicit-def dead $sp, implicit $sp
|
|
tBX_RET 14, $noreg
|
|
|
|
...
|