86 lines
2.5 KiB
YAML
86 lines
2.5 KiB
YAML
# RUN: llc -start-before=aarch64-ldst-opt -o - %s | FileCheck %s
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# CHECK-NOT: stp xzr, xzr, [sp], #16
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# CHECK: add sp, sp, #16
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--- |
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-arm-none-eabi"
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define hidden i32 @foo(i32 %0) {
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%2 = alloca [4 x i32], align 4
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%3 = bitcast [4 x i32]* %2 to i8*
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call void @llvm.memset.p0i8.i64(i8* nonnull align 4 dereferenceable(16) %3, i8 0, i64 16, i1 false)
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%4 = sext i32 %0 to i64
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%5 = getelementptr inbounds [4 x i32], [4 x i32]* %2, i64 0, i64 %4
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%6 = load i32, i32* %5, align 4
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ret i32 %6
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}
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declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) #2
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declare void @llvm.stackprotector(i8*, i8**) #3
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{!"clang version 11.0.0 "}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"int", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C++ TBAA"}
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...
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---
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name: foo
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alignment: 8
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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registers: []
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liveins:
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- { reg: '$w0', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 16
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offsetAdjustment: 0
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maxAlignment: 8
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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localFrameSize: 16
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savePoint: ''
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restorePoint: ''
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fixedStack: []
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stack:
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- { id: 0, type: default, offset: -16, size: 16,
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alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -16, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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callSites: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0 (%ir-block.1):
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liveins: $w0
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$sp = frame-setup SUBXri $sp, 16, 0
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$x8 = ADDXri $sp, 0, 0
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STRXui $xzr, $sp, 1 :: (store 8 into %ir.3 + 8)
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STRXui $xzr, $sp, 0 :: (store 8 into %ir.3)
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renamable $w0 = LDRWroW killed renamable $x8, killed renamable $w0, 1, 1 :: (load 4 from %ir.5, !tbaa !2)
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$sp = frame-destroy ADDXri $sp, 16, 0
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RET undef $lr, implicit $w0
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...
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