1# RUN: llc %s -run-pass x86-avoid-SFB -mtriple=x86_64-unknown-linux-gnu -o - | FileCheck %s 2# 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.ll 16# llc -stop-before=x86-avoid-SFB test.ll -o before.mir 17# 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 uwtable 29 define dso_local void @debug(<4 x float>* noalias nocapture %p1, <4 x float>* noalias nocapture %p2) local_unnamed_addr #0 !dbg !10 { 30 entry: 31 call void @llvm.dbg.value(metadata <4 x float>* %p1, metadata !21, metadata !DIExpression()), !dbg !25 32 call void @llvm.dbg.value(metadata <4 x float>* %p2, metadata !22, metadata !DIExpression()), !dbg !25 33 %0 = bitcast <4 x float>* %p1 to i8*, !dbg !26 34 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 35 store i8 0, i8* %0, align 1, !dbg !27 36 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 37 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 38 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 39 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 40 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 41 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 42 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 43 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 44 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 45 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 46 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 47 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 48 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 49 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 50 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 51 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 52 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 53 call void @llvm.dbg.value(metadata i8* %0, metadata !23, metadata !DIExpression()), !dbg !25 54 %1 = load <4 x float>, <4 x float>* %p1, align 16, !dbg !28 55 call void @llvm.dbg.value(metadata <4 x float> %1, metadata !24, metadata !DIExpression()), !dbg !25 56 store <4 x float> %1, <4 x float>* %p2, align 16, !dbg !29 57 ret void, !dbg !30 58 } 59 60 ; Function Attrs: nounwind readnone speculatable 61 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 62 63 ; Function Attrs: nounwind 64 declare void @llvm.stackprotector(i8*, i8**) #2 65 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" "unsafe-fp-math"="false" "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: debug 109alignment: 16 110exposesReturnsTwice: false 111legalized: false 112regBankSelected: false 113selected: false 114failedISel: false 115tracksRegLiveness: true 116hasWinCFI: false 117registers: 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: false 126 isReturnAddressTaken: false 127 hasStackMap: false 128 hasPatchPoint: false 129 stackSize: 0 130 offsetAdjustment: 0 131 maxAlignment: 0 132 adjustsStack: false 133 hasCalls: false 134 stackProtector: '' 135 maxCallFrameSize: 4294967295 136 cvBytesOfCalleeSavedRegisters: 0 137 hasOpaqueSPAdjustment: false 138 hasVAStart: false 139 hasMustTailInVarArgFunc: false 140 localFrameSize: 0 141 savePoint: '' 142 restorePoint: '' 143fixedStack: [] 144stack: [] 145constants: [] 146machineFunctionInfo: {} 147body: | 148 bb.0.entry: 149 liveins: $rdi, $rsi 150 151 DBG_VALUE $rdi, $noreg, !21, !DIExpression(), debug-location !25 152 DBG_VALUE $rsi, $noreg, !22, !DIExpression(), debug-location !25 153 %1:gr64 = COPY $rsi 154 DBG_VALUE %1, $noreg, !22, !DIExpression(), debug-location !25 155 %0:gr64 = COPY $rdi 156 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 157 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 158 MOV8mi %0, 1, $noreg, 0, $noreg, 0, debug-location !27 :: (store (s8) into %ir.0) 159 CFI_INSTRUCTION offset $r13, -123 160 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 161 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 162 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 163 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 164 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 165 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 166 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 167 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 168 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 169 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 170 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 171 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 172 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 173 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 174 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 175 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 176 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 177 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 178 %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 !25 180 MOVAPSmr %1, 1, $noreg, 0, $noreg, killed %2, debug-location !29 :: (store (s128) into %ir.p2) 181 RET 0, debug-location !30 182 183 ; CHECK-LABEL: name: debug 184 ; CHECK: %1:gr64 = COPY 185 ; CHECK: %0:gr64 = COPY 186 ; CHECK: MOV8mi 187 ; CHECK: %3:gr8 = MOV8rm 188 ; CHECK: MOV8mr 189 ; CHECK: %4:gr64 = MOV64rm 190 ; CHECK: MOV64mr 191 ; CHECK: %5:gr32 = MOV32rm 192 ; CHECK: MOV32mr 193 ; CHECK: %6:gr16 = MOV16rm 194 ; CHECK: MOV16mr 195 ; CHECK: %7:gr8 = MOV8rm 196 ; CHECK: MOV8mr 197 ; CHECK: RET 0 198... 199