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