| # RUN: llc -emit-call-site-info -mtriple=arm-linux-gnueabi -debug-entry-values -filetype=obj -start-after=machineverifier %s -o -| llvm-dwarfdump -| FileCheck %s |
| # Following code is used for producing this test case. Note that |
| # some of argument loading instruction are modified in order to |
| # cover certain cases. |
| # |
| # extern int func2(int,int,int*); |
| # int func1(int arg1, int arg2, int arg3) { |
| # int a = func2(arg1 + 2, arg2 - 4, &arg3); |
| # a += func2(arg3 - 16, arg1 + 8, &a); |
| # return a++; |
| # } |
| # |
| # CHECK: DW_TAG_GNU_call_site |
| # CHECK-NEXT: DW_AT_abstract_origin {{.*}}"func2") |
| # CHECK-NEXT: DW_AT_low_pc |
| # CHECK: DW_TAG_GNU_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg2 R2) |
| # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg13 SP+4) |
| # CHECK-EMPTY: |
| # CHECK-NEXT: DW_TAG_GNU_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg1 R1) |
| # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg4 R4-4) |
| # CHECK: DW_TAG_GNU_call_site |
| # CHECK-NEXT: DW_AT_abstract_origin {{.*}}"func2") |
| # CHECK-NEXT: DW_AT_low_pc |
| # CHECK-EMPTY: |
| # CHECK-NEXT: DW_TAG_GNU_call_site_parameter |
| # R2 loads memory location. We can't rely that memory location won't be changed. |
| # CHECK-NOT: DW_AT_location (DW_OP_reg2 R2) |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg1 R1) |
| # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg4 R4+8) |
| --- | |
| ; ModuleID = 'dbgcall-site-interpretation.c' |
| source_filename = "dbgcall-site-interpretation.c" |
| target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "armv4t-unknown-linux-gnu" |
| |
| ; Function Attrs: nounwind |
| define dso_local arm_aapcscc i32 @func1(i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr #0 !dbg !14 { |
| entry: |
| %arg3.addr = alloca i32, align 4 |
| %a = alloca i32, align 4 |
| call void @llvm.dbg.value(metadata i32 %arg1, metadata !18, metadata !DIExpression()), !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %arg2, metadata !19, metadata !DIExpression()), !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %arg3, metadata !20, metadata !DIExpression()), !dbg !22 |
| store i32 %arg3, i32* %arg3.addr, align 4 |
| %0 = bitcast i32* %a to i8*, !dbg !22 |
| call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0), !dbg !22 |
| %add = add nsw i32 %arg1, 2, !dbg !22 |
| %sub = add nsw i32 %arg2, -4, !dbg !22 |
| call void @llvm.dbg.value(metadata i32* %arg3.addr, metadata !20, metadata !DIExpression(DW_OP_deref)), !dbg !22 |
| %call = call arm_aapcscc i32 @func2(i32 %add, i32 %sub, i32* nonnull %arg3.addr), !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %call, metadata !21, metadata !DIExpression()), !dbg !22 |
| store i32 %call, i32* %a, align 4, !dbg !22 |
| %1 = load i32, i32* %arg3.addr, align 4, !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %1, metadata !20, metadata !DIExpression()), !dbg !22 |
| %sub1 = add nsw i32 %1, -16, !dbg !22 |
| %add2 = add nsw i32 %arg1, 8, !dbg !22 |
| call void @llvm.dbg.value(metadata i32* %a, metadata !21, metadata !DIExpression(DW_OP_deref)), !dbg !22 |
| %call3 = call arm_aapcscc i32 @func2(i32 %sub1, i32 %add2, i32* nonnull %a), !dbg !22 |
| %2 = load i32, i32* %a, align 4, !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %2, metadata !21, metadata !DIExpression()), !dbg !22 |
| %add4 = add nsw i32 %2, %call3, !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %add4, metadata !21, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !22 |
| call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0), !dbg !22 |
| ret i32 %add4, !dbg !22 |
| } |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) |
| |
| declare !dbg !4 dso_local arm_aapcscc i32 @func2(i32, i32, i32*) local_unnamed_addr |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) |
| |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.stackprotector(i8*, i8**) |
| |
| attributes #0 = { "frame-pointer"="all"} |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!9, !10, !11, !12} |
| !llvm.ident = !{!13} |
| |
| !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) |
| !1 = !DIFile(filename: "dbgcall-site-interpretation.c", directory: "/") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "func2", scope: !1, file: !1, line: 8, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !7, !7, !8} |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 32) |
| !9 = !{i32 2, !"Dwarf Version", i32 4} |
| !10 = !{i32 2, !"Debug Info Version", i32 3} |
| !11 = !{i32 1, !"wchar_size", i32 4} |
| !12 = !{i32 1, !"min_enum_size", i32 4} |
| !13 = !{!"clang version 10.0.0"} |
| !14 = distinct !DISubprogram(name: "func1", scope: !1, file: !1, line: 9, type: !15, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !17) |
| !15 = !DISubroutineType(types: !16) |
| !16 = !{!7, !7, !7, !7} |
| !17 = !{!18, !19, !20, !21} |
| !18 = !DILocalVariable(name: "arg1", arg: 1, scope: !14, file: !1, line: 9, type: !7) |
| !19 = !DILocalVariable(name: "arg2", arg: 2, scope: !14, file: !1, line: 9, type: !7) |
| !20 = !DILocalVariable(name: "arg3", arg: 3, scope: !14, file: !1, line: 9, type: !7) |
| !21 = !DILocalVariable(name: "a", scope: !14, file: !1, line: 10, type: !7) |
| !22 = !DILocation(line: 0, scope: !14) |
| ... |
| --- |
| name: func1 |
| alignment: 4 |
| callSites: |
| - { bb: 0, offset: 22, fwdArgRegs: |
| - { arg: 0, reg: '$r0' } |
| - { arg: 1, reg: '$r1' } |
| - { arg: 2, reg: '$r2' } } |
| - { bb: 0, offset: 32, fwdArgRegs: |
| - { arg: 0, reg: '$r0' } |
| - { arg: 1, reg: '$r1' } |
| - { arg: 2, reg: '$r2' } } |
| body: | |
| bb.0.entry: |
| liveins: $r0, $r1, $r2, $r4, $r5, $r10, $lr |
| |
| DBG_VALUE $r0, $noreg, !18, !DIExpression(), debug-location !22 |
| DBG_VALUE $r1, $noreg, !19, !DIExpression(), debug-location !22 |
| DBG_VALUE $r1, $noreg, !19, !DIExpression(), debug-location !22 |
| DBG_VALUE $r2, $noreg, !20, !DIExpression(), debug-location !22 |
| DBG_VALUE $r2, $noreg, !20, !DIExpression(), debug-location !22 |
| $sp = frame-setup STMDB_UPD $sp, 14, $noreg, killed $r4, killed $r10, $r11, killed $lr |
| frame-setup CFI_INSTRUCTION def_cfa_offset 16 |
| frame-setup CFI_INSTRUCTION offset $lr, -4 |
| frame-setup CFI_INSTRUCTION offset $r11, -8 |
| frame-setup CFI_INSTRUCTION offset $r10, -12 |
| frame-setup CFI_INSTRUCTION offset $r4, -16 |
| $r11 = frame-setup ADDri $sp, 8, 14, $noreg, $noreg |
| frame-setup CFI_INSTRUCTION def_cfa $r11, 8 |
| $sp = frame-setup SUBri $sp, 8, 14, $noreg, $noreg |
| $r4 = MOVr $r0, 14, $noreg, $noreg |
| DBG_VALUE $r4, $noreg, !18, !DIExpression(), debug-location !22 |
| STRi12 killed renamable $r2, $sp, 4, 14, $noreg :: (store 4 into %ir.arg3.addr) |
| DBG_VALUE $sp, $noreg, !20, !DIExpression(DW_OP_plus_uconst, 4, DW_OP_deref), debug-location !22 |
| renamable $r0 = nsw ADDri killed $r0, 2, 14, $noreg, $noreg, debug-location !22 |
| renamable $r1 = nsw SUBri renamable $r4, 4, 14, $noreg, $noreg, debug-location !22 |
| DBG_VALUE $r1, $noreg, !19, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !22 |
| renamable $r2 = ADDri $sp, 4, 14, $noreg, $noreg |
| BL @func2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit killed $r2, implicit-def $sp, implicit-def $r0, debug-location !22 |
| DBG_VALUE $r0, $noreg, !21, !DIExpression(), debug-location !22 |
| STRi12 killed renamable $r0, $sp, 0, 14, $noreg, debug-location !22 :: (store 4 into %ir.a) |
| renamable $r0 = LDRi12 $sp, 4, 14, $noreg, debug-location !22 :: (dereferenceable load 4 from %ir.arg3.addr) |
| DBG_VALUE $sp, $noreg, !21, !DIExpression(DW_OP_deref), debug-location !22 |
| DBG_VALUE $r0, $noreg, !20, !DIExpression(), debug-location !22 |
| renamable $r1 = nsw ADDri killed renamable $r4, 8, 14, $noreg, $noreg, debug-location !22 |
| $r5 = MOVr $sp, 14, $noreg, $noreg |
| renamable $r2 = LDRi12 killed $r5, 16, 14, $noreg |
| renamable $r0 = nsw SUBri killed renamable $r0, 16, 14, $noreg, $noreg, debug-location !22 |
| BL @func2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit killed $r2, implicit-def $sp, implicit-def $r0, debug-location !22 |
| renamable $r1 = LDRi12 $sp, 0, 14, $noreg, debug-location !22 :: (dereferenceable load 4 from %ir.a) |
| DBG_VALUE $r1, $noreg, !21, !DIExpression(), debug-location !22 |
| renamable $r0 = nsw ADDrr killed renamable $r1, killed renamable $r0, 14, $noreg, $noreg, debug-location !22 |
| DBG_VALUE $r0, $noreg, !21, !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value), debug-location !22 |
| $sp = SUBri $r11, 8, 14, $noreg, $noreg, debug-location !22 |
| $sp = LDMIA_UPD $sp, 14, $noreg, def $r4, def $r10, def $r11, def $lr, debug-location !22 |
| DBG_VALUE $r0, $noreg, !18, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !22 |
| BX_RET 14, $noreg, implicit killed $r0, debug-location !22 |
| |
| ... |
