181 lines · plain
1# RUN: llc -emit-call-site-info -mtriple aarch64-linux-gnu -debug-entry-values -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s2# Following code is used for producing this test case. Note that3# some of argument loading instruction are modified in order to4# cover certain cases.5#6# extern int func2(int,int,int*);7# int func1(int arg1, int arg2, int arg3) {8# int a = func2(arg1 + 2, arg2 - 4, &arg3);9# a += func2(arg3 - 16, arg1 + 8, &a);10# return a++;11# }12#13# CHECK: DW_TAG_GNU_call_site14# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "func2"15# CHECK: DW_TAG_GNU_call_site_parameter16# CHECK-NOT: DW_AT_location (DW_OP_reg2 W0)17# CHECK-NEXT: DW_AT_location (DW_OP_reg2 W2)18# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_fbreg +28)19# CHECK-EMPTY: 20# CHECK-NEXT: DW_TAG_GNU_call_site_parameter21# CHECK-NEXT: DW_AT_location (DW_OP_reg1 W1)22# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg19 W19-4)23# CHECK: DW_TAG_GNU_call_site24# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "func2")25# CHECK-NEXT: DW_AT_low_pc26# CHECK-EMPTY: 27# CHECK-NEXT: DW_TAG_GNU_call_site_parameter28# CHECK-NEXT: DW_AT_location (DW_OP_reg0 W0)29# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit13)30# CHECK-EMPTY: 31# CHECK-NEXT: DW_TAG_GNU_call_site_parameter32# W2 loads memory location. We can't rely that memory location won't be changed.33# CHECK-NOT: DW_AT_location (DW_OP_reg2 W2)34# CHECK-NEXT: DW_AT_location (DW_OP_reg1 W1)35# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_constu 0xc0)36--- |37 ; ModuleID = 'describe-call-pram-load-instruction.c'38 source_filename = "describe-call-pram-load-instruction.c"39 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"40 target triple = "aarch64-unknown-linux-gnu"41 42 ; Function Attrs: nounwind43 define dso_local i32 @func1(i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr #0 !dbg !13 {44 entry:45 %arg3.addr = alloca i32, align 446 %a = alloca i32, align 447 call void @llvm.dbg.value(metadata i32 %arg1, metadata !17, metadata !DIExpression()), !dbg !2148 call void @llvm.dbg.value(metadata i32 %arg2, metadata !18, metadata !DIExpression()), !dbg !2149 call void @llvm.dbg.value(metadata i32 %arg3, metadata !19, metadata !DIExpression()), !dbg !2150 store i32 %arg3, ptr %arg3.addr, align 451 %0 = bitcast ptr %a to ptr, !dbg !2152 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %0), !dbg !2153 %add = add nsw i32 %arg1, 2, !dbg !2154 %sub = add nsw i32 %arg2, -4, !dbg !2155 call void @llvm.dbg.value(metadata ptr %arg3.addr, metadata !19, metadata !DIExpression(DW_OP_deref)), !dbg !2156 %call = call i32 @func2(i32 %add, i32 %sub, ptr nonnull %arg3.addr), !dbg !2157 call void @llvm.dbg.value(metadata i32 %call, metadata !20, metadata !DIExpression()), !dbg !2158 store i32 %call, ptr %a, align 4, !dbg !2159 %1 = load i32, ptr %arg3.addr, align 4, !dbg !2160 call void @llvm.dbg.value(metadata i32 %1, metadata !19, metadata !DIExpression()), !dbg !2161 %sub1 = add nsw i32 %1, -16, !dbg !2162 %add2 = add nsw i32 %arg1, 8, !dbg !2163 call void @llvm.dbg.value(metadata ptr %a, metadata !20, metadata !DIExpression(DW_OP_deref)), !dbg !2164 %call3 = call i32 @func2(i32 %sub1, i32 %add2, ptr nonnull %a), !dbg !2165 %2 = load i32, ptr %a, align 4, !dbg !2166 call void @llvm.dbg.value(metadata i32 %2, metadata !20, metadata !DIExpression()), !dbg !2167 %add4 = add nsw i32 %2, %call3, !dbg !2168 call void @llvm.dbg.value(metadata i32 %add4, metadata !20, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !2169 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %0), !dbg !2170 ret i32 %add4, !dbg !2171 }72 73 ; Function Attrs: argmemonly nounwind willreturn74 declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)75 76 declare !dbg !4 dso_local i32 @func2(i32, i32, ptr) local_unnamed_addr77 78 ; Function Attrs: argmemonly nounwind willreturn79 declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)80 81 ; Function Attrs: nounwind readnone speculatable willreturn82 declare void @llvm.dbg.value(metadata, metadata, metadata)83 84 ; Function Attrs: nounwind85 declare void @llvm.stackprotector(ptr, ptr)86 87 attributes #0 = { "frame-pointer"="all" }88 89 !llvm.dbg.cu = !{!0}90 !llvm.module.flags = !{!9, !10, !11}91 !llvm.ident = !{!12}92 93 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)94 !1 = !DIFile(filename: "describe-call-pram-load-instruction.c", directory: "/")95 !2 = !{}96 !3 = !{!4}97 !4 = !DISubprogram(name: "func2", scope: !1, file: !1, line: 8, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)98 !5 = !DISubroutineType(types: !6)99 !6 = !{!7, !7, !7, !8}100 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)101 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)102 !9 = !{i32 2, !"Dwarf Version", i32 4}103 !10 = !{i32 2, !"Debug Info Version", i32 3}104 !11 = !{i32 1, !"wchar_size", i32 4}105 !12 = !{!"clang version 10.0.0 "}106 !13 = distinct !DISubprogram(name: "func1", scope: !1, file: !1, line: 9, type: !14, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16)107 !14 = !DISubroutineType(types: !15)108 !15 = !{!7, !7, !7, !7}109 !16 = !{!17, !18, !19, !20}110 !17 = !DILocalVariable(name: "arg1", arg: 1, scope: !13, file: !1, line: 9, type: !7)111 !18 = !DILocalVariable(name: "arg2", arg: 2, scope: !13, file: !1, line: 9, type: !7)112 !19 = !DILocalVariable(name: "arg3", arg: 3, scope: !13, file: !1, line: 9, type: !7)113 !20 = !DILocalVariable(name: "a", scope: !13, file: !1, line: 10, type: !7)114 !21 = !DILocation(line: 0, scope: !13)115 116...117---118name: func1119frameInfo:120 adjustsStack: true121 hasCalls: true122stack:123 - { id: 0, name: arg3.addr, offset: -4, size: 4, alignment: 4, local-offset: -4 }124 - { id: 1, name: a, offset: -8, size: 4, alignment: 4, local-offset: -8 }125 - { id: 2, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$x19' }126 - { id: 3, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$lr' }127 - { id: 4, type: spill-slot, offset: -32, size: 8, alignment: 8, callee-saved-register: '$fp' }128callSites:129 - { bb: 0, offset: 20, fwdArgRegs: 130 - { arg: 0, reg: '$w0' }131 - { arg: 1, reg: '$w1' }132 - { arg: 2, reg: '$x2' } }133 - { bb: 0, offset: 29, fwdArgRegs: 134 - { arg: 0, reg: '$w0' }135 - { arg: 1, reg: '$w1' }136 - { arg: 2, reg: '$x2' } }137body: |138 bb.0.entry:139 liveins: $w0, $w1, $w2, $lr, $x19140 141 DBG_VALUE $w0, $noreg, !17, !DIExpression(), debug-location !21142 DBG_VALUE $w1, $noreg, !18, !DIExpression(), debug-location !21143 DBG_VALUE $w1, $noreg, !18, !DIExpression(), debug-location !21144 DBG_VALUE $w2, $noreg, !19, !DIExpression(), debug-location !21145 DBG_VALUE $w2, $noreg, !19, !DIExpression(), debug-location !21146 early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -4 :: (store (s64) into %stack.4), (store (s64) into %stack.3)147 frame-setup STRXui killed $x19, $sp, 2 :: (store (s64) into %stack.2)148 $fp = frame-setup ADDXri $sp, 0, 0149 frame-setup CFI_INSTRUCTION def_cfa $w29, 32150 frame-setup CFI_INSTRUCTION offset $w19, -16151 frame-setup CFI_INSTRUCTION offset $w30, -24152 frame-setup CFI_INSTRUCTION offset $w29, -32153 $w19 = ORRWrs $wzr, $w0, 0154 DBG_VALUE $w19, $noreg, !17, !DIExpression(), debug-location !21155 STRWui killed renamable $w2, $fp, 7 :: (store (s32) into %ir.arg3.addr)156 renamable $w0 = nsw ADDWri $w0, 2, 0, debug-location !21157 renamable $w1 = nsw SUBWri renamable $w19, 4, 0, debug-location !21158 DBG_VALUE $w1, $noreg, !18, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !21159 DBG_VALUE $fp, $noreg, !19, !DIExpression(DW_OP_plus_uconst, 28, DW_OP_deref), debug-location !21160 $x2 = ADDXri $fp, 28, 0, debug-location !21161 BL @func2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $x2, implicit-def $sp, implicit-def $w0, debug-location !21162 DBG_VALUE $w0, $noreg, !20, !DIExpression(), debug-location !21163 renamable $w8 = LDRWui $fp, 7, debug-location !21 :: (dereferenceable load (s32) from %ir.arg3.addr)164 DBG_VALUE $w8, $noreg, !19, !DIExpression(), debug-location !21165 STRWui killed renamable $w0, $fp, 6, debug-location !21 :: (store (s32) into %ir.a)166 renamable $w1 = nsw MOVZWi 12, 4167 DBG_VALUE $fp, $noreg, !20, !DIExpression(DW_OP_plus_uconst, 24, DW_OP_deref), debug-location !21168 $x2 = LDRXui $fp, 24, debug-location !21169 renamable $w0 = nsw MOVZWi 13, 0170 BL @func2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit killed $x2, implicit-def $sp, implicit-def $w0, debug-location !21171 renamable $w8 = LDRWui $fp, 6, debug-location !21 :: (dereferenceable load (s32) from %ir.a)172 DBG_VALUE $w8, $noreg, !20, !DIExpression(), debug-location !21173 $x19 = frame-destroy LDRXui $sp, 2, debug-location !21 :: (load (s64) from %stack.2)174 DBG_VALUE $w0, $noreg, !17, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !21175 $w0 = ADDWrs killed renamable $w8, killed renamable $w0, 0, debug-location !21176 DBG_VALUE $w0, $noreg, !20, !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value), debug-location !21177 early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 4, debug-location !21 :: (load (s64) from %stack.4), (load (s64) from %stack.3)178 RET undef $lr, implicit killed $w0, debug-location !21179 180...181