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1# RUN: llc %s -run-pass x86-avoid-SFB -mtriple=x86_64-unknown-linux-gnu -o - | FileCheck %s2#3# This was generated from:4#5# using alpha = float __attribute__((ext_vector_type(4)));6#7# void bravo(alpha * __restrict__ p1, alpha * __restrict__ p2) {8# char *p3 = (char *)p1;9# *p3 = 0;10# alpha t = *p1;11# *p2 = t;12# }13#14# Using the command line:15# clang -g -c 1.cpp -O2 -S -emit-llvm -fno-strict-aliasing --target=x86_64-unknown-unknown -o test.ll16# llc -stop-before=x86-avoid-SFB test.ll -o before.mir17#18# The IR has been modified to include a number of debug/meta instructions between the initial store and load.19# If the code treats debug/meta instructions as normal instructions, the separation between the store and load 20# will be too great to enable the optimization.21 22--- |23 ; ModuleID = 'test.ll'24 source_filename = "1.cpp"25 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"26 target triple = "x86_64-unknown-unknown"27 28 ; Function Attrs: norecurse nounwind uwtable29 define dso_local void @debug(ptr noalias nocapture %p1, ptr noalias nocapture %p2) local_unnamed_addr #0 !dbg !10 {30 entry:31 call void @llvm.dbg.value(metadata ptr %p1, metadata !21, metadata !DIExpression()), !dbg !2532 call void @llvm.dbg.value(metadata ptr %p2, metadata !22, metadata !DIExpression()), !dbg !2533 %0 = bitcast ptr %p1 to ptr, !dbg !2634 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2535 store i8 0, ptr %0, align 1, !dbg !2736 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2537 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2538 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2539 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2540 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2541 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2542 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2543 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2544 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2545 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2546 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2547 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2548 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2549 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2550 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2551 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2552 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2553 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !2554 %1 = load <4 x float>, ptr %p1, align 16, !dbg !2855 call void @llvm.dbg.value(metadata <4 x float> %1, metadata !24, metadata !DIExpression()), !dbg !2556 store <4 x float> %1, ptr %p2, align 16, !dbg !2957 ret void, !dbg !3058 }59 60 ; Function Attrs: nounwind readnone speculatable61 declare void @llvm.dbg.value(metadata, metadata, metadata) #162 63 ; Function Attrs: nounwind64 declare void @llvm.stackprotector(ptr, ptr) #265 66 attributes #0 = { norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "use-soft-float"="false" }67 attributes #1 = { nounwind readnone speculatable }68 attributes #2 = { nounwind }69 70 !llvm.dbg.cu = !{!0}71 !llvm.module.flags = !{!6, !7, !8}72 !llvm.ident = !{!9}73 74 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git 9afc4764dd24bd2f23c44e51ad33f8e58234a8b6)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)75 !1 = !DIFile(filename: "1.cpp", directory: "C:\5CUsers\5Cgbdawsoc\5CDocuments\5Cllvm\5Cbg40969")76 !2 = !{}77 !3 = !{!4}78 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)79 !5 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)80 !6 = !{i32 2, !"Dwarf Version", i32 4}81 !7 = !{i32 2, !"Debug Info Version", i32 3}82 !8 = !{i32 1, !"wchar_size", i32 4}83 !9 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git 9afc4764dd24bd2f23c44e51ad33f8e58234a8b6)"}84 !10 = distinct !DISubprogram(name: "bravo", linkageName: "_Z5bravoPDv4_fS0_", scope: !1, file: !1, line: 4, type: !11, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !20)85 !11 = !DISubroutineType(types: !12)86 !12 = !{null, !13, !13}87 !13 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !14)88 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64)89 !15 = !DIDerivedType(tag: DW_TAG_typedef, name: "alpha", file: !1, line: 2, baseType: !16)90 !16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, size: 128, flags: DIFlagVector, elements: !18)91 !17 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)92 !18 = !{!19}93 !19 = !DISubrange(count: 4)94 !20 = !{!21, !22, !23, !24}95 !21 = !DILocalVariable(name: "p1", arg: 1, scope: !10, file: !1, line: 4, type: !13)96 !22 = !DILocalVariable(name: "p2", arg: 2, scope: !10, file: !1, line: 4, type: !13)97 !23 = !DILocalVariable(name: "p3", scope: !10, file: !1, line: 5, type: !4)98 !24 = !DILocalVariable(name: "t", scope: !10, file: !1, line: 7, type: !15)99 !25 = !DILocation(line: 0, scope: !10)100 !26 = !DILocation(line: 5, column: 14, scope: !10)101 !27 = !DILocation(line: 6, column: 7, scope: !10)102 !28 = !DILocation(line: 7, column: 13, scope: !10)103 !29 = !DILocation(line: 8, column: 7, scope: !10)104 !30 = !DILocation(line: 9, column: 1, scope: !10)105 106...107---108name: debug109alignment: 16110exposesReturnsTwice: false111legalized: false112regBankSelected: false113selected: false114failedISel: false115tracksRegLiveness: true116hasWinCFI: false117registers:118 - { id: 0, class: gr64, preferred-register: '' }119 - { id: 1, class: gr64, preferred-register: '' }120 - { id: 2, class: vr128, preferred-register: '' }121liveins:122 - { reg: '$rdi', virtual-reg: '%0' }123 - { reg: '$rsi', virtual-reg: '%1' }124frameInfo:125 isFrameAddressTaken: false126 isReturnAddressTaken: false127 hasStackMap: false128 hasPatchPoint: false129 stackSize: 0130 offsetAdjustment: 0131 maxAlignment: 0132 adjustsStack: false133 hasCalls: false134 stackProtector: ''135 maxCallFrameSize: 4294967295136 cvBytesOfCalleeSavedRegisters: 0137 hasOpaqueSPAdjustment: false138 hasVAStart: false139 hasMustTailInVarArgFunc: false140 localFrameSize: 0141 savePoint: []142 restorePoint: []143fixedStack: []144stack: []145constants: []146machineFunctionInfo: {}147body: |148 bb.0.entry:149 liveins: $rdi, $rsi150 151 DBG_VALUE $rdi, $noreg, !21, !DIExpression(), debug-location !25152 DBG_VALUE $rsi, $noreg, !22, !DIExpression(), debug-location !25153 %1:gr64 = COPY $rsi154 DBG_VALUE %1, $noreg, !22, !DIExpression(), debug-location !25155 %0:gr64 = COPY $rdi156 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25157 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25158 MOV8mi %0, 1, $noreg, 0, $noreg, 0, debug-location !27 :: (store (s8) into %ir.0)159 CFI_INSTRUCTION offset $r13, -123160 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25161 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25162 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25163 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25164 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25165 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25166 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25167 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25168 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25169 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25170 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25171 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25172 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25173 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25174 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25175 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25176 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25177 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25178 %2:vr128 = MOVAPSrm %0, 1, $noreg, 0, $noreg, debug-location !28 :: (load (s128) from %ir.p1)179 DBG_VALUE %2, $noreg, !24, !DIExpression(), debug-location !25180 MOVAPSmr %1, 1, $noreg, 0, $noreg, killed %2, debug-location !29 :: (store (s128) into %ir.p2)181 RET 0, debug-location !30182 183 ; CHECK-LABEL: name: debug184 ; CHECK: %1:gr64 = COPY185 ; CHECK: %0:gr64 = COPY186 ; CHECK: MOV8mi187 ; CHECK: %3:gr8 = MOV8rm188 ; CHECK: MOV8mr189 ; CHECK: %4:gr64 = MOV64rm190 ; CHECK: MOV64mr191 ; CHECK: %5:gr32 = MOV32rm192 ; CHECK: MOV32mr193 ; CHECK: %6:gr16 = MOV16rm194 ; CHECK: MOV16mr195 ; CHECK: %7:gr8 = MOV8rm196 ; CHECK: MOV8mr197 ; CHECK: RET 0198...199