derek.holloway
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82 lines
3.4 KiB
YAML
82 lines
3.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
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# RUN: llc --run-pass=aarch64-ldst-opt %s -o - | FileCheck %s
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--- |
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target triple = "aarch64-unknown-linux"
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define i32 @f(i32 %x) {
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entry:
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ret i32 0
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}
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declare i32 @g(i32)
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...
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---
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name: f
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alignment: 4
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tracksRegLiveness: true
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liveins:
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- { reg: '$w0', virtual-reg: '' }
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frameInfo:
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stackSize: 32
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maxAlignment: 8
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adjustsStack: true
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hasCalls: true
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isCalleeSavedInfoValid: true
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fixedStack: []
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stack:
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- { id: 0, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8,
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stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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- { id: 1, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8,
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stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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entry_values: []
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo:
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hasRedZone: false
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body: |
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bb.0.entry:
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liveins: $w0, $lr, $x1
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; Test a load instruction is merged backwards into an SP update
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; CHECK-LABEL: name: f
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; CHECK: liveins: $w0, $lr, $x1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: early-clobber $sp, $x0 = frame-setup LDRXpre $sp, -32 :: (load (s64))
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; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 32
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; CHECK-NEXT: frame-setup STRXui killed $fp, $sp, 0 :: (store (s64) into %stack.1)
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; CHECK-NEXT: frame-setup STRXui killed $x1, $sp, 1
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; CHECK-NEXT: frame-setup STRXui killed $lr, $sp, 2 :: (store (s64) into %stack.0)
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; CHECK-NEXT: $fp = frame-setup ADDXri $sp, 0, 0
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; CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa $w29, 32
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; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $w30, -8
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; CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $w29, -16
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; CHECK-NEXT: renamable $w0 = nsw SUBWri killed renamable $w0, 1, 0
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; CHECK-NEXT: BL @g, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $w0, implicit-def $sp, implicit-def $w0
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; CHECK-NEXT: $w0 = nsw ADDWri killed renamable $w0, 1, 0
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; CHECK-NEXT: $fp = frame-destroy LDRXui $sp, 0 :: (load (s64) from %stack.1)
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; CHECK-NEXT: $lr = frame-destroy LDRXui $sp, 2 :: (load (s64) from %stack.0)
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; CHECK-NEXT: $sp = frame-destroy ADDXri $sp, 32, 0
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; CHECK-NEXT: RET undef $lr, implicit $w0
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$sp = frame-setup SUBXri $sp, 32, 0
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frame-setup CFI_INSTRUCTION def_cfa_offset 32
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$x0 = frame-setup LDRXui $sp, 0 :: (load (s64))
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frame-setup STRXui killed $fp, $sp, 0 :: (store (s64) into %stack.1)
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frame-setup STRXui killed $x1, $sp, 1
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frame-setup STRXui killed $lr, $sp, 2 :: (store (s64) into %stack.0)
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$fp = frame-setup ADDXri $sp, 0, 0
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frame-setup CFI_INSTRUCTION def_cfa $w29, 32
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frame-setup CFI_INSTRUCTION offset $w30, -8
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frame-setup CFI_INSTRUCTION offset $w29, -16
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renamable $w0 = nsw SUBWri killed renamable $w0, 1, 0
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BL @g, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $w0, implicit-def $sp, implicit-def $w0
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$w0 = nsw ADDWri killed renamable $w0, 1, 0
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$fp = frame-destroy LDRXui $sp, 0 :: (load (s64) from %stack.1)
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$lr = frame-destroy LDRXui $sp, 2 :: (load (s64) from %stack.0)
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$sp = frame-destroy ADDXri $sp, 32, 0
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RET undef $lr, implicit $w0
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...
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