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1# RUN: llc -mtriple mips64-linux -emit-call-site-info -start-after=livedebugvalues -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s2 3## Test case where a parameter value could be described as a sub-register.4## Built from source:5## extern int foo(char*,int,int);6## int f1(int a, char* str){7## return foo(str, a, 0);8## }9## fastcc attribute of foo() is added manually to the .ll to match the real case10 11#CHECK: DW_TAG_GNU_call_site12#CHECK-NEXT: DW_AT_abstract_origin {{.*}} "foo"13 14#CHECK: DW_TAG_GNU_call_site_parameter15#CHECK-NEXT: DW_AT_location (DW_OP_reg6 A2_64)16#CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)17#CHECK-EMPTY:18#CHECK-NEXT: DW_TAG_GNU_call_site_parameter19#CHECK-NEXT: DW_AT_location (DW_OP_reg4 A0_64)20#CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg5 A1_64))21#CHECK-EMPTY:22## The parameter, which value is loaded by COPY instr using sub-register, should be omitted.23#CHECK-NOT: DW_TAG_GNU_call_site_parameter24#CHECK-NOT: DW_AT_location (DW_OP_reg5 A1_64)25#CHECK-NOT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg4 A0_64))26--- |27 ; ModuleID = 'm.ll'28 source_filename = "m.c"29 target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"30 target triple = "mips64-unknown-linux"31 32 ; Function Attrs: nounwind33 define signext i32 @f1(i32 signext %a, ptr %str) local_unnamed_addr !dbg !8 {34 entry:35 call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !1836 call void @llvm.dbg.value(metadata ptr %str, metadata !17, metadata !DIExpression()), !dbg !1837 %call = tail call fastcc signext i32 @foo(ptr %str, i32 signext %a, i32 signext 0), !dbg !1838 ret i32 %call, !dbg !1839 }40 41 declare !dbg !21 fastcc signext i32 @foo(ptr, i32 signext, i32 signext) local_unnamed_addr42 43 ; Function Attrs: nounwind readnone speculatable willreturn44 declare void @llvm.dbg.value(metadata, metadata, metadata)45 46 !llvm.dbg.cu = !{!0}47 !llvm.module.flags = !{!3, !4, !5, !6}48 !llvm.ident = !{!7}49 50 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)51 !1 = !DIFile(filename: "<stdin>", directory: "/dir")52 !2 = !{}53 !3 = !{i32 7, !"Dwarf Version", i32 4}54 !4 = !{i32 2, !"Debug Info Version", i32 3}55 !5 = !{i32 1, !"wchar_size", i32 4}56 !6 = !{i32 7, !"PIC Level", i32 1}57 !7 = !{!"clang version 11.0.0"}58 !8 = distinct !DISubprogram(name: "f1", scope: !9, file: !9, line: 4, type: !10, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)59 !9 = !DIFile(filename: "m.c", directory: "/dir")60 !10 = !DISubroutineType(types: !11)61 !11 = !{!12, !12, !13}62 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)63 !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64)64 !14 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)65 !15 = !{!16, !17}66 !16 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !9, line: 4, type: !12)67 !17 = !DILocalVariable(name: "str", arg: 2, scope: !8, file: !9, line: 4, type: !13)68 !18 = !DILocation(line: 0, scope: !8)69 !21 = !DISubprogram(name: "foo", scope: !9, file: !9, line: 2, type: !22, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)70 !22 = !DISubroutineType(types: !23)71 !23 = !{!12, !13, !12, !12}72 73...74---75name: f176alignment: 877stack:78 - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, 79 stack-id: default, callee-saved-register: '$ra_64', callee-saved-restored: true, 80 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }81callSites:82 - { bb: 0, offset: 12, fwdArgRegs: 83 - { arg: 0, reg: '$a0_64' }84 - { arg: 1, reg: '$a1' }85 - { arg: 2, reg: '$a2' } }86body: |87 bb.0.entry:88 DBG_VALUE $a0_64, $noreg, !16, !DIExpression(), debug-location !1889 DBG_VALUE $a1_64, $noreg, !17, !DIExpression(), debug-location !1890 $sp_64 = DADDiu $sp_64, -1691 CFI_INSTRUCTION def_cfa_offset 1692 SD killed $ra_64, $sp_64, 8 :: (store (s64) into %stack.0)93 CFI_INSTRUCTION offset $ra_64, -894 $at_64 = OR64 $a0_64, $zero_6495 DBG_VALUE $a1_64, $noreg, !17, !DIExpression(), debug-location !1896 DBG_VALUE $at_64, $noreg, !16, !DIExpression(), debug-location !1897 $a0_64 = OR64 killed $a1_64, $zero_64, debug-location !1898 DBG_VALUE $a0_64, $noreg, !17, !DIExpression(), debug-location !1899 $a1 = OR $at, $zero, implicit killed $at_64, debug-location !18100 JAL @foo, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit $a1, implicit killed $a2, implicit-def $sp, implicit-def $v0, debug-location !18 {101 $a2 = ADDiu $zero, 0, debug-location !18102 }103 renamable $v0_64 = SLL64_32 killed renamable $v0, debug-location !18104 $ra_64 = LD $sp_64, 8, debug-location !18 :: (load (s64) from %stack.0)105 PseudoReturn64 undef $ra_64, implicit $v0_64, debug-location !18 {106 $sp_64 = DADDiu $sp_64, 16107 }108 109...110