| # RUN: llc -emit-call-site-info -start-before=livedebugvalues -stop-after=machineverifier -o - %s \ |
| # RUN: | FileCheck %s -check-prefix=MIR |
| |
| # RUN: llc -emit-call-site-info -start-before=livedebugvalues -filetype=obj -o - %s \ |
| # RUN: | llvm-dwarfdump - | FileCheck %s -check-prefix=DWARF -implicit-check-not=DW_OP_entry_value |
| |
| # // Original Source |
| # struct fat_ptr { |
| # int *ptr, *low, *high; |
| # }; |
| # extern int baz(int x); |
| # int bar(struct fat_ptr f) { |
| # return baz(baz(*f.ptr)); |
| # } |
| |
| # MIR: renamable $w0 = LDRWui killed renamable $x8 |
| # MIR-NEXT: DBG_VALUE $x0, 0, {{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1) |
| # MIR-NEXT: BL @baz |
| # MIR-NEXT: frame-destroy LDPXpost |
| # MIR-NEXT: TCRETURNdi @baz |
| |
| # After w0 is clobbered, we should get an indirect parameter entry value for "f". |
| |
| # DWARF: DW_TAG_subprogram |
| # DWARF: DW_TAG_formal_parameter |
| # DWARF-NEXT: DW_AT_location |
| # DWARF-NEXT: [0x0000000000000000, 0x0000000000000010): DW_OP_breg0 W0+0 |
| # DWARF-NEXT: [0x0000000000000010, 0x000000000000001c): DW_OP_entry_value(DW_OP_reg0 W0)) |
| # DWARF-NEXT: DW_AT_name ("f") |
| |
| # DWARF: DW_TAG_subprogram |
| # DWARF: DW_AT_name ("baz") |
| |
| --- | |
| target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" |
| target triple = "arm64-apple-ios10.0.0" |
| |
| %struct.fat_ptr = type { i32*, i32*, i32* } |
| |
| define i32 @bar(%struct.fat_ptr* nocapture readonly %f) local_unnamed_addr !dbg !13 { |
| entry: |
| call void @llvm.dbg.declare(metadata %struct.fat_ptr* %f, metadata !23, metadata !DIExpression()), !dbg !24 |
| %ptr2 = bitcast %struct.fat_ptr* %f to i32**, !dbg !25 |
| %0 = load i32*, i32** %ptr2, align 8, !dbg !25 |
| %1 = load i32, i32* %0, align 4, !dbg !31 |
| %call = tail call i32 @baz(i32 %1), !dbg !34 |
| %call1 = tail call i32 @baz(i32 %call), !dbg !35 |
| ret i32 %call1, !dbg !36 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) |
| |
| declare !dbg !4 i32 @baz(i32) local_unnamed_addr optsize |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9, !10, !11} |
| !llvm.ident = !{!12} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None, sysroot: "/") |
| !1 = !DIFile(filename: "indirect.c", directory: "/tmp/fatptr") |
| !2 = !{} |
| !4 = !DISubprogram(name: "baz", scope: !1, file: !1, line: 4, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !7} |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !8 = !{i32 7, !"Dwarf Version", i32 4} |
| !9 = !{i32 2, !"Debug Info Version", i32 3} |
| !10 = !{i32 1, !"wchar_size", i32 4} |
| !11 = !{i32 7, !"PIC Level", i32 2} |
| !12 = !{!"clang"} |
| !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) |
| !14 = !DISubroutineType(types: !15) |
| !15 = !{!7, !16} |
| !16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "fat_ptr", file: !1, line: 1, size: 192, elements: !17) |
| !17 = !{!18, !20, !21} |
| !18 = !DIDerivedType(tag: DW_TAG_member, name: "ptr", scope: !16, file: !1, line: 2, baseType: !19, size: 64) |
| !19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64) |
| !20 = !DIDerivedType(tag: DW_TAG_member, name: "low", scope: !16, file: !1, line: 2, baseType: !19, size: 64, offset: 64) |
| !21 = !DIDerivedType(tag: DW_TAG_member, name: "high", scope: !16, file: !1, line: 2, baseType: !19, size: 64, offset: 128) |
| !22 = !{!23} |
| !23 = !DILocalVariable(name: "f", arg: 1, scope: !13, file: !1, line: 5, type: !16) |
| !24 = !DILocation(line: 5, column: 24, scope: !13) |
| !25 = !DILocation(line: 6, column: 23, scope: !13) |
| !31 = !DILocation(line: 6, column: 20, scope: !13) |
| !34 = !DILocation(line: 6, column: 16, scope: !13) |
| !35 = !DILocation(line: 6, column: 12, scope: !13) |
| !36 = !DILocation(line: 6, column: 5, scope: !13) |
| |
| ... |
| --- |
| name: bar |
| stack: |
| - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, |
| stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| - { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8, |
| stack-id: default, callee-saved-register: '$fp', callee-saved-restored: true, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| callSites: |
| - { bb: 0, offset: 8, fwdArgRegs: |
| - { arg: 0, reg: '$w0' } } |
| - { bb: 0, offset: 10, fwdArgRegs: |
| - { arg: 0, reg: '$w0' } } |
| body: | |
| bb.0.entry: |
| liveins: $x0, $lr |
| |
| DBG_VALUE $x0, 0, !23, !DIExpression(), debug-location !24 |
| early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -2 :: (store (s64) into %stack.1), (store (s64) into %stack.0) |
| $fp = frame-setup ADDXri $sp, 0, 0 |
| frame-setup CFI_INSTRUCTION def_cfa $w29, 16 |
| frame-setup CFI_INSTRUCTION offset $w30, -8, debug-location !25 |
| frame-setup CFI_INSTRUCTION offset $w29, -16, debug-location !25 |
| renamable $x8 = LDRXui killed renamable $x0, 0, debug-location !25 :: (load (s64) from %ir.ptr2) |
| renamable $w0 = LDRWui killed renamable $x8, 0, debug-location !31 :: (load (s32) from %ir.0) |
| BL @baz, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $w0, implicit-def $sp, implicit-def $w0, debug-location !34 |
| early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2, debug-location !35 :: (load (s64) from %stack.1), (load (s64) from %stack.0) |
| TCRETURNdi @baz, 0, csr_aarch64_aapcs, implicit $sp, implicit $w0, debug-location !35 |
| |
| ... |