| # RUN: llc -mtriple aarch64-linux-gnu -emit-call-site-info -debug-entry-values -start-after=livedebugvalues -filetype=obj -o - %s \ |
| # RUN: | llvm-dwarfdump - | FileCheck %s --implicit-check-not=DW_TAG_GNU_call_site_parameter |
| # |
| # Based on the following C reproducer: |
| # |
| # extern void call(long, long, long); |
| # |
| # void entry_value (long param) { |
| # call(param + 222, param - 444, param); |
| # } |
| |
| --- | |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| target triple = "aarch64" |
| |
| define dso_local void @entry_value(i64 %param) local_unnamed_addr !dbg !12 { |
| entry: |
| call void @llvm.dbg.value(metadata i64 %param, metadata !16, metadata !DIExpression()), !dbg !17 |
| %add = add nsw i64 %param, 222, !dbg !17 |
| %sub = add nsw i64 %param, -444, !dbg !17 |
| call void @call(i64 %add, i64 %sub, i64 %param), !dbg !17 |
| ret void, !dbg !17 |
| } |
| |
| declare !dbg !4 dso_local void @call(i64, i64, i64) local_unnamed_addr |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9, !10} |
| !llvm.ident = !{!11} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "dbgcall-site-expr-entry-value.mir", directory: "/") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "call", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{null, !7, !7, !7} |
| !7 = !DIBasicType(name: "long int", size: 64, 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 = !{!"clang version 11.0.0 "} |
| !12 = distinct !DISubprogram(name: "entry_value", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15) |
| !13 = !DISubroutineType(types: !14) |
| !14 = !{null, !7} |
| !15 = !{!16} |
| !16 = !DILocalVariable(name: "param", arg: 1, scope: !12, file: !1, line: 3, type: !7) |
| !17 = !DILocation(line: 4, scope: !12) |
| |
| ... |
| --- |
| name: entry_value |
| tracksRegLiveness: true |
| stack: |
| - { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$lr' } |
| - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp' } |
| callSites: |
| - { bb: 0, offset: 10, fwdArgRegs: |
| - { arg: 0, reg: '$x0' } |
| - { arg: 1, reg: '$x1' } |
| - { arg: 2, reg: '$x2' } } |
| body: | |
| bb.0.entry: |
| liveins: $x0, $lr |
| |
| DBG_VALUE $x0, $noreg, !16, !DIExpression(), debug-location !17 |
| early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -2 :: (store 8 into %stack.1), (store 8 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 |
| frame-setup CFI_INSTRUCTION offset $w29, -16 |
| $x2 = ORRXrs $xzr, $x0, 0 |
| DBG_VALUE $x2, $noreg, !16, !DIExpression(), debug-location !17 |
| renamable $x0 = nsw ADDXri killed $x0, 222, 0, debug-location !17 |
| renamable $x1 = nsw SUBXri renamable $x2, 444, 0, debug-location !17 |
| BL @call, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, implicit killed $x1, implicit killed $x2, implicit-def $sp, debug-location !17 |
| early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2, debug-location !17 :: (load 8 from %stack.1), (load 8 from %stack.0) |
| RET undef $lr, debug-location !17 |
| |
| ... |
| |
| # Verify that a call site parameter is emitted for the third parameter. There |
| # should also be entries for the first and second parameter, but |
| # DW_OP_LLVM_entry_value operations can currently not be emitted together with |
| # any other expressions. Verify that nothing is emitted rather than an assert |
| # being triggered, or broken expressions being emitted. |
| |
| # CHECK: DW_TAG_GNU_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg2 W2) |
| # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg0 W0)) |