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1# RUN: llc -start-before=aarch64-ldst-opt -o - %s | FileCheck %s2# CHECK-NOT: stp xzr, xzr, [sp], #163# CHECK: add sp, sp, #164--- |5 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"6 target triple = "aarch64"7 8 define hidden i32 @foo(i32 %0) {9 %2 = alloca [4 x i32], align 410 %3 = bitcast ptr %2 to ptr11 call void @llvm.memset.p0.i64(ptr nonnull align 4 dereferenceable(16) %3, i8 0, i64 16, i1 false)12 %4 = sext i32 %0 to i6413 %5 = getelementptr inbounds [4 x i32], ptr %2, i64 0, i64 %414 %6 = load i32, ptr %5, align 415 ret i32 %616 }17 18 declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #219 declare void @llvm.stackprotector(ptr, ptr) #320 21 !llvm.module.flags = !{!0}22 !llvm.ident = !{!1}23 24 !0 = !{i32 1, !"wchar_size", i32 4}25 !1 = !{!"clang version 11.0.0 "}26 !2 = !{!3, !3, i64 0}27 !3 = !{!"int", !4, i64 0}28 !4 = !{!"omnipotent char", !5, i64 0}29 !5 = !{!"Simple C++ TBAA"}30 31...32---33name: foo34alignment: 835exposesReturnsTwice: false36legalized: false37regBankSelected: false38selected: false39failedISel: false40tracksRegLiveness: true41hasWinCFI: false42registers: []43liveins:44 - { reg: '$w0', virtual-reg: '' }45frameInfo:46 isFrameAddressTaken: false47 isReturnAddressTaken: false48 hasStackMap: false49 hasPatchPoint: false50 stackSize: 1651 offsetAdjustment: 052 maxAlignment: 853 adjustsStack: false54 hasCalls: false55 stackProtector: ''56 maxCallFrameSize: 057 cvBytesOfCalleeSavedRegisters: 058 hasOpaqueSPAdjustment: false59 hasVAStart: false60 hasMustTailInVarArgFunc: false61 localFrameSize: 1662 savePoint: []63 restorePoint: []64fixedStack: []65stack:66 - { id: 0, type: default, offset: -16, size: 16,67 alignment: 8, stack-id: default, callee-saved-register: '', callee-saved-restored: true, 68 local-offset: -16, debug-info-variable: '', debug-info-expression: '',69 debug-info-location: '' }70callSites: []71constants: []72machineFunctionInfo: {}73body: |74 bb.0 (%ir-block.1):75 liveins: $w076 77 $sp = frame-setup SUBXri $sp, 16, 078 $x8 = ADDXri $sp, 0, 079 STRXui $xzr, $sp, 1 :: (store (s64) into %ir.3 + 8)80 STRXui $xzr, $sp, 0 :: (store (s64) into %ir.3)81 renamable $w0 = LDRWroW killed renamable $x8, killed renamable $w0, 1, 1 :: (load (s32) from %ir.5, !tbaa !2)82 $sp = frame-destroy ADDXri $sp, 16, 083 RET undef $lr, implicit $w084 85...86