1# RUN: llc -emit-call-site-info -start-before=livedebugvalues -stop-after=machineverifier -o - %s \ 2# RUN: | FileCheck %s -check-prefix=MIR 3 4# RUN: llc -emit-call-site-info -start-before=livedebugvalues -filetype=obj -o - %s \ 5# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefix=DWARF -implicit-check-not=DW_OP_entry_value 6 7# // Original Source 8# struct fat_ptr { 9# int *ptr, *low, *high; 10# }; 11# extern int baz(int x); 12# int bar(struct fat_ptr f) { 13# return baz(baz(*f.ptr)); 14# } 15 16# MIR: renamable $w0 = LDRWui killed renamable $x8 17# MIR-NEXT: DBG_VALUE $x0, 0, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1) 18# MIR-NEXT: BL @baz 19# MIR-NEXT: frame-destroy LDPXpost 20# MIR-NEXT: TCRETURNdi @baz 21 22# After w0 is clobbered, we should get an indirect parameter entry value for "f". 23 24# DWARF: DW_TAG_subprogram 25# DWARF: DW_TAG_formal_parameter 26# DWARF-NEXT: DW_AT_location 27# DWARF-NEXT: [0x0000000000000000, 0x0000000000000010): DW_OP_breg0 W0+0 28# DWARF-NEXT: [0x0000000000000010, 0x000000000000001c): DW_OP_entry_value(DW_OP_reg0 W0)) 29# DWARF-NEXT: DW_AT_name ("f") 30 31# DWARF: DW_TAG_subprogram 32# DWARF: DW_AT_name ("baz") 33 34--- | 35 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" 36 target triple = "arm64-apple-ios10.0.0" 37 38 %struct.fat_ptr = type { ptr, ptr, ptr } 39 40 define i32 @bar(ptr nocapture readonly %f) local_unnamed_addr !dbg !13 { 41 entry: 42 call void @llvm.dbg.declare(metadata ptr %f, metadata !23, metadata !DIExpression()), !dbg !24 43 %ptr2 = bitcast ptr %f to ptr, !dbg !25 44 %0 = load ptr, ptr %ptr2, align 8, !dbg !25 45 %1 = load i32, ptr %0, align 4, !dbg !31 46 %call = tail call i32 @baz(i32 %1), !dbg !34 47 %call1 = tail call i32 @baz(i32 %call), !dbg !35 48 ret i32 %call1, !dbg !36 49 } 50 51 declare void @llvm.dbg.declare(metadata, metadata, metadata) 52 53 declare !dbg !4 i32 @baz(i32) local_unnamed_addr optsize 54 55 !llvm.dbg.cu = !{!0} 56 !llvm.module.flags = !{!8, !9, !10, !11} 57 !llvm.ident = !{!12} 58 59 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None, sysroot: "/") 60 !1 = !DIFile(filename: "indirect.c", directory: "/tmp/fatptr") 61 !2 = !{} 62 !4 = !DISubprogram(name: "baz", scope: !1, file: !1, line: 4, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 63 !5 = !DISubroutineType(types: !6) 64 !6 = !{!7, !7} 65 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 66 !8 = !{i32 7, !"Dwarf Version", i32 4} 67 !9 = !{i32 2, !"Debug Info Version", i32 3} 68 !10 = !{i32 1, !"wchar_size", i32 4} 69 !11 = !{i32 7, !"PIC Level", i32 2} 70 !12 = !{!"clang"} 71 !13 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 5, type: !14, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !22) 72 !14 = !DISubroutineType(types: !15) 73 !15 = !{!7, !16} 74 !16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "fat_ptr", file: !1, line: 1, size: 192, elements: !17) 75 !17 = !{!18, !20, !21} 76 !18 = !DIDerivedType(tag: DW_TAG_member, name: "ptr", scope: !16, file: !1, line: 2, baseType: !19, size: 64) 77 !19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64) 78 !20 = !DIDerivedType(tag: DW_TAG_member, name: "low", scope: !16, file: !1, line: 2, baseType: !19, size: 64, offset: 64) 79 !21 = !DIDerivedType(tag: DW_TAG_member, name: "high", scope: !16, file: !1, line: 2, baseType: !19, size: 64, offset: 128) 80 !22 = !{!23} 81 !23 = !DILocalVariable(name: "f", arg: 1, scope: !13, file: !1, line: 5, type: !16) 82 !24 = !DILocation(line: 5, column: 24, scope: !13) 83 !25 = !DILocation(line: 6, column: 23, scope: !13) 84 !31 = !DILocation(line: 6, column: 20, scope: !13) 85 !34 = !DILocation(line: 6, column: 16, scope: !13) 86 !35 = !DILocation(line: 6, column: 12, scope: !13) 87 !36 = !DILocation(line: 6, column: 5, scope: !13) 88 89... 90--- 91name: bar 92stack: 93 - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, 94 stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true, 95 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 96 - { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8, 97 stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true, 98 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 99callSites: 100 - { bb: 0, offset: 8, fwdArgRegs: 101 - { arg: 0, reg: '$w0' } } 102 - { bb: 0, offset: 10, fwdArgRegs: 103 - { arg: 0, reg: '$w0' } } 104body: | 105 bb.0.entry: 106 liveins: $x0, $lr 107 108 DBG_VALUE $x0, 0, !23, !DIExpression(), debug-location !24 109 early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -2 :: (store (s64) into %stack.1), (store (s64) into %stack.0) 110 $fp = frame-setup ADDXri $sp, 0, 0 111 frame-setup CFI_INSTRUCTION def_cfa $w29, 16 112 frame-setup CFI_INSTRUCTION offset $w30, -8, debug-location !25 113 frame-setup CFI_INSTRUCTION offset $w29, -16, debug-location !25 114 renamable $x8 = LDRXui killed renamable $x0, 0, debug-location !25 :: (load (s64) from %ir.ptr2) 115 renamable $w0 = LDRWui killed renamable $x8, 0, debug-location !31 :: (load (s32) from %ir.0) 116 BL @baz, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $w0, implicit-def $sp, implicit-def $w0, debug-location !34 117 early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2, debug-location !35 :: (load (s64) from %stack.1), (load (s64) from %stack.0) 118 TCRETURNdi @baz, 0, csr_aarch64_aapcs, implicit $sp, implicit $w0, debug-location !35 119 120... 121