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1## Test the call site encoding in DWARF5 vs GNU extensions.2 3## === DWARF4, tune for gdb ===4# RUN: llc -emit-call-site-info -dwarf-version 4 -debugger-tune=gdb -filetype=obj \5# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \6# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-GNU -implicit-check-not=DW_AT_call7 8# === DWARF5, tune for gdb ===9# RUN: llc -dwarf-version 5 -debugger-tune=gdb -emit-call-site-info -filetype=obj \10# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \11# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-DWARF5 -implicit-check-not=DW_AT_call12 13## === DWARF4, tune for lldb ===14# RUN: llc -dwarf-version 4 -debugger-tune=lldb -emit-call-site-info -filetype=obj \15# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \16# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-DWARF5 -implicit-check-not=DW_AT_call17 18## === DWARF5, tune for lldb ===19# RUN: llc -dwarf-version 5 -debugger-tune=lldb -emit-call-site-info -filetype=obj \20# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \21# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-DWARF5 -implicit-check-not=DW_AT_call22 23## === DWARF4, tune for sce ===24# RUN: llc -emit-call-site-info -dwarf-version 4 -filetype=obj -debugger-tune=sce \25# RUN: -debug-entry-values -mtriple=x86_64-unknown-unknown \26# RUN: -start-after=machineverifier -o - %s | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-GNU27 28## === DWARF5, tune for sce ===29# RUN: llc -emit-call-site-info -dwarf-version 5 -filetype=obj -debugger-tune=sce \30# RUN: -debug-entry-values -mtriple=x86_64-unknown-unknown \31# RUN: -start-after=machineverifier -o - %s | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-DWARF532 33## === DWARF3, tune for gdb ===34# RUN: llc -emit-call-site-info -dwarf-version 3 -debugger-tune=gdb -filetype=obj \35# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \36# RUN: | llvm-dwarfdump - | FileCheck %s -implicit-check-not=DW_AT_call37 38## === DWARF3, tune for lldb ===39# RUN: llc -dwarf-version 3 -debugger-tune=lldb -emit-call-site-info -filetype=obj \40# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \41# RUN: | llvm-dwarfdump - | FileCheck %s -implicit-check-not=DW_AT_GNU_call42 43## === DWARF3, tune for sce ===44# RUN: llc -emit-call-site-info -dwarf-version 3 -filetype=obj -debugger-tune=sce \45# RUN: -debug-entry-values -mtriple=x86_64-unknown-unknown \46# RUN: -start-after=machineverifier -o - %s | llvm-dwarfdump - | FileCheck %s -implicit-check-not=DW_AT_call47 48## This is based on the following reproducer:49##50## extern void fn();51## extern void fn2(int x);52## extern int fn3();53##54## int fn1(int (*fn4) ()) {55## fn();56## fn2(5);57##58## int x = (*fn4)();59## if (!x)60## return fn3();61## else62## return -1;63## }64 65## Check GNU extensions:66 67# CHECK-GNU: DW_TAG_subprogram68# CHECK-GNU: DW_AT_GNU_all_call_sites (true)69# CHECK-GNU: DW_TAG_GNU_call_site70# CHECK-GNU-NEXT: DW_AT_abstract_origin71# CHECK-GNU-NEXT: DW_AT_low_pc72# CHECK-GNU: DW_TAG_GNU_call_site_parameter73# CHECK-GNU-NEXT: DW_AT_location74# CHECK-GNU-NEXT: DW_AT_GNU_call_site_value75# CHECK-GNU: DW_TAG_GNU_call_site76# CHECK-GNU-NEXT: DW_AT_GNU_call_site_target77# CHECK-GNU-NEXT: DW_AT_low_pc78# CHECK-GNU: DW_TAG_GNU_call_site79# CHECK-GNU-NEXT: DW_AT_abstract_origin80# CHECK-GNU-NEXT: DW_AT_GNU_tail_call81# CHECK-GNU-NEXT: DW_AT_low_pc82 83## Check DWARF 5:84 85# CHECK-DWARF5: DW_TAG_subprogram86# CHECK-DWARF5: DW_AT_call_all_calls (true)87# CHECK-DWARF5: DW_TAG_call_site88# CHECK-DWARF5-NEXT: DW_AT_call_origin89# CHECK-DWARF5-NEXT: DW_AT_call_return_pc90# CHECK-DWARF5: DW_TAG_call_site91# CHECK-DWARF5-NEXT: DW_AT_call_origin92# CHECK-DWARF5-NEXT: DW_AT_call_return_pc93# CHECK-DWARF5: DW_TAG_call_site_parameter94# CHECK-DWARF5-NEXT: DW_AT_location95# CHECK-DWARF5-NEXT: DW_AT_call_value96# CHECK-DWARF5: DW_TAG_call_site97# CHECK-DWARF5-NEXT: DW_AT_call_target98# CHECK-DWARF5-NEXT: DW_AT_call_return_pc99# CHECK-DWARF5: DW_TAG_call_site100# CHECK-DWARF5-NEXT: DW_AT_call_origin101# CHECK-DWARF5-NEXT: DW_AT_call_tail_call102# CHECK-DWARF5-NEXT: DW_AT_call_pc103 104--- |105 ; ModuleID = 'call-site-attrs.c'106 source_filename = "call-site-attrs.c"107 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"108 target triple = "x86_64-unknown-linux-gnu"109 ; Function Attrs: nounwind uwtable110 define dso_local i32 @fn1(ptr nocapture %fn4) local_unnamed_addr !dbg !18 {111 entry:112 call void @llvm.dbg.value(metadata ptr %fn4, metadata !23, metadata !DIExpression()), !dbg !25113 tail call void (...) @fn(), !dbg !26114 tail call void @fn2(i32 5), !dbg !27115 %call = tail call i32 (...) %fn4(), !dbg !28116 call void @llvm.dbg.value(metadata i32 %call, metadata !24, metadata !DIExpression()), !dbg !25117 %tobool = icmp eq i32 %call, 0, !dbg !29118 br i1 %tobool, label %if.then, label %cleanup, !dbg !31119 120 if.then: ; preds = %entry121 %call1 = tail call i32 (...) @fn3(), !dbg !32122 ret i32 %call1, !dbg !33123 124 cleanup: ; preds = %entry125 ret i32 -1, !dbg !33126 }127 declare !dbg !4 dso_local void @fn(...) local_unnamed_addr128 declare !dbg !7 dso_local void @fn2(i32) local_unnamed_addr129 declare !dbg !11 dso_local i32 @fn3(...) local_unnamed_addr130 ; Function Attrs: nounwind readnone speculatable willreturn131 declare void @llvm.dbg.value(metadata, metadata, metadata)132 133 !llvm.dbg.cu = !{!0}134 !llvm.module.flags = !{!14, !15, !16}135 !llvm.ident = !{!17}136 137 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)138 !1 = !DIFile(filename: "call-site-attrs.c", directory: "/")139 !2 = !{}140 !3 = !{!4, !7, !11}141 !4 = !DISubprogram(name: "fn", scope: !1, file: !1, line: 1, type: !5, spFlags: DISPFlagOptimized, retainedNodes: !2)142 !5 = !DISubroutineType(types: !6)143 !6 = !{null, null}144 !7 = !DISubprogram(name: "fn2", scope: !1, file: !1, line: 2, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)145 !8 = !DISubroutineType(types: !9)146 !9 = !{null, !10}147 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)148 !11 = !DISubprogram(name: "fn3", scope: !1, file: !1, line: 3, type: !12, spFlags: DISPFlagOptimized, retainedNodes: !2)149 !12 = !DISubroutineType(types: !13)150 !13 = !{!10, null}151 !14 = !{i32 7, !"Dwarf Version", i32 4}152 !15 = !{i32 2, !"Debug Info Version", i32 3}153 !16 = !{i32 1, !"wchar_size", i32 4}154 !17 = !{!"clang version 11.0.0"}155 !18 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 5, type: !19, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !22)156 !19 = !DISubroutineType(types: !20)157 !20 = !{!10, !21}158 !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)159 !22 = !{!23, !24}160 !23 = !DILocalVariable(name: "fn4", arg: 1, scope: !18, file: !1, line: 5, type: !21)161 !24 = !DILocalVariable(name: "x", scope: !18, file: !1, line: 9, type: !10)162 !25 = !DILocation(line: 0, scope: !18)163 !26 = !DILocation(line: 6, column: 3, scope: !18)164 !27 = !DILocation(line: 7, column: 3, scope: !18)165 !28 = !DILocation(line: 9, column: 11, scope: !18)166 !29 = !DILocation(line: 10, column: 8, scope: !30)167 !30 = distinct !DILexicalBlock(scope: !18, file: !1, line: 10, column: 7)168 !31 = !DILocation(line: 10, column: 7, scope: !18)169 !32 = !DILocation(line: 11, column: 12, scope: !30)170 !33 = !DILocation(line: 14, column: 1, scope: !18)171 172...173---174name: fn1175callSites:176 - { bb: 0, offset: 7, fwdArgRegs: [] }177 - { bb: 0, offset: 9, fwdArgRegs: 178 - { arg: 0, reg: '$edi' } }179 - { bb: 0, offset: 11, fwdArgRegs: [] }180 - { bb: 2, offset: 7, fwdArgRegs: [] }181body: |182 bb.0.entry:183 successors: %bb.2(0x30000000), %bb.1(0x50000000)184 liveins: $rdi, $rbx185 186 DBG_VALUE $rdi, $noreg, !23, !DIExpression(), debug-location !25187 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp188 CFI_INSTRUCTION def_cfa_offset 16189 CFI_INSTRUCTION offset $rbx, -16190 $rbx = MOV64rr $rdi191 DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !25192 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !26193 CALL64pcrel32 @fn, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit-def $rsp, implicit-def $ssp, debug-location !26194 $edi = MOV32ri 5, debug-location !27195 CALL64pcrel32 @fn2, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !27196 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !28197 CALL64r killed renamable $rbx, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !28198 DBG_VALUE $eax, $noreg, !24, !DIExpression(), debug-location !25199 TEST32rr killed renamable $eax, renamable $eax, implicit-def $eflags, debug-location !29200 JCC_1 %bb.2, 4, implicit $eflags, debug-location !31201 202 bb.1.cleanup:203 DBG_VALUE $eax, $noreg, !24, !DIExpression(), debug-location !25204 DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !25205 $eax = MOV32ri -1, debug-location !33206 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33207 DBG_VALUE $rdi, $noreg, !23, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !25208 CFI_INSTRUCTION def_cfa_offset 8, debug-location !33209 RET64 $eax, debug-location !33210 211 bb.2.if.then:212 CFI_INSTRUCTION def_cfa_offset 16, debug-location !32213 DBG_VALUE $eax, $noreg, !24, !DIExpression(), debug-location !25214 DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !25215 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !32216 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !32217 DBG_VALUE $rdi, $noreg, !23, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !25218 CFI_INSTRUCTION def_cfa_offset 8, debug-location !32219 TAILJMPd64 @fn3, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit $al, debug-location !32220 221...222