1# RUN: llc %s -run-pass x86-avoid-SFB -mtriple=x86_64-unknown-linux-gnu -o - | FileCheck %s -check-prefixes=CHECK,DEBUG 2# RUN: llc %s -run-pass x86-avoid-SFB -mtriple=x86_64-unknown-linux-gnu -o - | FileCheck %s -check-prefixes=CHECK,NODEBUG 3# 4# This was generated from: 5# 6# using alpha = float __attribute__((ext_vector_type(4))); 7# 8# void bravo(alpha * __restrict__ p1, alpha * __restrict__ p2) { 9# char *p3 = (char *)p1; 10# *p3 = 0; 11# alpha t = *p1; 12# *p2 = t; 13# } 14# 15# Using the command line: 16# clang -g -c 1.cpp -O2 -S -emit-llvm -fno-strict-aliasing --target=x86_64-unknown-unknown -o test.ll 17# llc -stop-before=x86-avoid-SFB test.ll -o before.mir 18 19--- | 20 ; ModuleID = 'test.ll' 21 source_filename = "1.cpp" 22 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 23 target triple = "x86_64-unknown-unknown" 24 25 ; Function Attrs: norecurse nounwind uwtable 26 define dso_local void @debug(ptr noalias nocapture %p1, ptr noalias nocapture %p2) local_unnamed_addr #0 !dbg !10 { 27 entry: 28 call void @llvm.dbg.value(metadata ptr %p1, metadata !21, metadata !DIExpression()), !dbg !25 29 call void @llvm.dbg.value(metadata ptr %p2, metadata !22, metadata !DIExpression()), !dbg !25 30 %0 = bitcast ptr %p1 to ptr, !dbg !26 31 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !25 32 store i8 0, ptr %0, align 1, !dbg !27 33 %1 = load <4 x float>, ptr %p1, align 16, !dbg !28 34 call void @llvm.dbg.value(metadata <4 x float> %1, metadata !24, metadata !DIExpression()), !dbg !25 35 store <4 x float> %1, ptr %p2, align 16, !dbg !29 36 ret void, !dbg !30 37 } 38 39 ; Function Attrs: norecurse nounwind uwtable 40 define dso_local void @nodebug(ptr noalias nocapture %p1, ptr noalias nocapture %p2) local_unnamed_addr #0 { 41 entry: 42 %0 = bitcast ptr %p1 to ptr 43 store i8 0, ptr %0, align 1 44 %1 = load <4 x float>, ptr %p1, align 16 45 store <4 x float> %1, ptr %p2, align 16 46 ret void 47 } 48 49 ; Function Attrs: nounwind readnone speculatable 50 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 51 52 ; Function Attrs: nounwind 53 declare void @llvm.stackprotector(ptr, ptr) #2 54 55 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" } 56 attributes #1 = { nounwind readnone speculatable } 57 attributes #2 = { nounwind } 58 59 !llvm.dbg.cu = !{!0} 60 !llvm.module.flags = !{!6, !7, !8} 61 !llvm.ident = !{!9} 62 63 !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) 64 !1 = !DIFile(filename: "1.cpp", directory: "C:\5CUsers\5Cgbdawsoc\5CDocuments\5Cllvm\5Cbg40969") 65 !2 = !{} 66 !3 = !{!4} 67 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64) 68 !5 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 69 !6 = !{i32 2, !"Dwarf Version", i32 4} 70 !7 = !{i32 2, !"Debug Info Version", i32 3} 71 !8 = !{i32 1, !"wchar_size", i32 4} 72 !9 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git 9afc4764dd24bd2f23c44e51ad33f8e58234a8b6)"} 73 !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) 74 !11 = !DISubroutineType(types: !12) 75 !12 = !{null, !13, !13} 76 !13 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !14) 77 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64) 78 !15 = !DIDerivedType(tag: DW_TAG_typedef, name: "alpha", file: !1, line: 2, baseType: !16) 79 !16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, size: 128, flags: DIFlagVector, elements: !18) 80 !17 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) 81 !18 = !{!19} 82 !19 = !DISubrange(count: 4) 83 !20 = !{!21, !22, !23, !24} 84 !21 = !DILocalVariable(name: "p1", arg: 1, scope: !10, file: !1, line: 4, type: !13) 85 !22 = !DILocalVariable(name: "p2", arg: 2, scope: !10, file: !1, line: 4, type: !13) 86 !23 = !DILocalVariable(name: "p3", scope: !10, file: !1, line: 5, type: !4) 87 !24 = !DILocalVariable(name: "t", scope: !10, file: !1, line: 7, type: !15) 88 !25 = !DILocation(line: 0, scope: !10) 89 !26 = !DILocation(line: 5, column: 14, scope: !10) 90 !27 = !DILocation(line: 6, column: 7, scope: !10) 91 !28 = !DILocation(line: 7, column: 13, scope: !10) 92 !29 = !DILocation(line: 8, column: 7, scope: !10) 93 !30 = !DILocation(line: 9, column: 1, scope: !10) 94 95... 96--- 97name: debug 98alignment: 16 99exposesReturnsTwice: false 100legalized: false 101regBankSelected: false 102selected: false 103failedISel: false 104tracksRegLiveness: true 105hasWinCFI: false 106registers: 107 - { id: 0, class: gr64, preferred-register: '' } 108 - { id: 1, class: gr64, preferred-register: '' } 109 - { id: 2, class: vr128, preferred-register: '' } 110liveins: 111 - { reg: '$rdi', virtual-reg: '%0' } 112 - { reg: '$rsi', virtual-reg: '%1' } 113frameInfo: 114 isFrameAddressTaken: false 115 isReturnAddressTaken: false 116 hasStackMap: false 117 hasPatchPoint: false 118 stackSize: 0 119 offsetAdjustment: 0 120 maxAlignment: 0 121 adjustsStack: false 122 hasCalls: false 123 stackProtector: '' 124 maxCallFrameSize: 4294967295 125 cvBytesOfCalleeSavedRegisters: 0 126 hasOpaqueSPAdjustment: false 127 hasVAStart: false 128 hasMustTailInVarArgFunc: false 129 localFrameSize: 0 130 savePoint: '' 131 restorePoint: '' 132fixedStack: [] 133stack: [] 134constants: [] 135machineFunctionInfo: {} 136body: | 137 bb.0.entry: 138 liveins: $rdi, $rsi 139 140 DBG_VALUE $rdi, $noreg, !21, !DIExpression(), debug-location !25 141 DBG_VALUE $rsi, $noreg, !22, !DIExpression(), debug-location !25 142 %1:gr64 = COPY $rsi 143 DBG_VALUE %1, $noreg, !22, !DIExpression(), debug-location !25 144 %0:gr64 = COPY $rdi 145 DBG_VALUE %0, $noreg, !21, !DIExpression(), debug-location !25 146 DBG_VALUE %0, $noreg, !23, !DIExpression(), debug-location !25 147 MOV8mi %0, 1, $noreg, 0, $noreg, 0, debug-location !27 :: (store (s8) into %ir.0) 148 %2:vr128 = MOVAPSrm %0, 1, $noreg, 0, $noreg, debug-location !28 :: (load (s128) from %ir.p1) 149 DBG_VALUE %2, $noreg, !24, !DIExpression(), debug-location !25 150 MOVAPSmr %1, 1, $noreg, 0, $noreg, killed %2, debug-location !29 :: (store (s128) into %ir.p2) 151 RET 0, debug-location !30 152 153... 154--- 155name: nodebug 156alignment: 16 157exposesReturnsTwice: false 158legalized: false 159regBankSelected: false 160selected: false 161failedISel: false 162tracksRegLiveness: true 163hasWinCFI: false 164registers: 165 - { id: 0, class: gr64, preferred-register: '' } 166 - { id: 1, class: gr64, preferred-register: '' } 167 - { id: 2, class: vr128, preferred-register: '' } 168liveins: 169 - { reg: '$rdi', virtual-reg: '%0' } 170 - { reg: '$rsi', virtual-reg: '%1' } 171frameInfo: 172 isFrameAddressTaken: false 173 isReturnAddressTaken: false 174 hasStackMap: false 175 hasPatchPoint: false 176 stackSize: 0 177 offsetAdjustment: 0 178 maxAlignment: 0 179 adjustsStack: false 180 hasCalls: false 181 stackProtector: '' 182 maxCallFrameSize: 4294967295 183 cvBytesOfCalleeSavedRegisters: 0 184 hasOpaqueSPAdjustment: false 185 hasVAStart: false 186 hasMustTailInVarArgFunc: false 187 localFrameSize: 0 188 savePoint: '' 189 restorePoint: '' 190fixedStack: [] 191stack: [] 192constants: [] 193machineFunctionInfo: {} 194body: | 195 bb.0.entry: 196 liveins: $rdi, $rsi 197 198 %1:gr64 = COPY $rsi 199 %0:gr64 = COPY $rdi 200 MOV8mi %0, 1, $noreg, 0, $noreg, 0 :: (store (s8) into %ir.0) 201 %2:vr128 = MOVAPSrm %0, 1, $noreg, 0, $noreg :: (load (s128) from %ir.p1) 202 MOVAPSmr %1, 1, $noreg, 0, $noreg, killed %2 :: (store (s128) into %ir.p2) 203 RET 0 204 205 ; DEBUG: name: debug 206 ; NODEBUG: name: nodebug 207 ; CHECK: %1:gr64 = COPY 208 ; CHECK: %0:gr64 = COPY 209 ; CHECK: MOV8mi 210 ; CHECK: %3:gr8 = MOV8rm 211 ; CHECK: MOV8mr 212 ; CHECK: %4:gr64 = MOV64rm 213 ; CHECK: MOV64mr 214 ; CHECK: %5:gr32 = MOV32rm 215 ; CHECK: MOV32mr 216 ; CHECK: %6:gr16 = MOV16rm 217 ; CHECK: MOV16mr 218 ; CHECK: %7:gr8 = MOV8rm 219 ; CHECK: MOV8mr 220 ; CHECK: RET 0 221 ; DEBUG: name: nodebug 222... 223