| # Verify that a CFI instruction with no debug location |
| # does not result in a line-0 location in the assembler. |
| # RUN: %llc_dwarf -start-after=prologepilog -march=x86-64 -use-unknown-locations=Enable %s -o - | FileCheck %s |
| # |
| # CHECK-NOT: .loc 1 0 |
| # CHECK: .cfi_def_cfa_offset |
| # UNSUPPORTED: cygwin,mingw32,win32,x86_64-pc-windows-gnu |
| |
| --- | |
| ; ModuleID = 'no-cfi-loc.ll' |
| source_filename = "no-cfi-loc.ll" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define void @foo() !dbg !6 { |
| entry: |
| call void @bar(), !dbg !8 |
| ret void, !dbg !9 |
| } |
| |
| declare void @bar() |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.stackprotector(i8*, i8**) #0 |
| |
| attributes #0 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| !llvm.ident = !{!5} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 288778)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2) |
| !1 = !DIFile(filename: "t.c", directory: "/home/probinson/projects/scratch") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{!"clang version 4.0.0 (trunk 288778)"} |
| !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !7 = !DISubroutineType(types: !2) |
| !8 = !DILocation(line: 3, column: 2, scope: !6) |
| !9 = !DILocation(line: 4, column: 1, scope: !6) |
| |
| ... |
| --- |
| name: foo |
| alignment: 4 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx', |
| '$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15', |
| '$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d', |
| '$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ] |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 8 |
| offsetAdjustment: 0 |
| maxAlignment: 0 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| body: | |
| bb.0.entry: |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp, debug-location !8 |
| CFI_INSTRUCTION def_cfa_offset 16 |
| CALL64pcrel32 @bar, csr_64, implicit $rsp, implicit-def $rsp, debug-location !8 |
| $rax = POP64r implicit-def $rsp, implicit $rsp, debug-location !9 |
| RET 0, debug-location !9 |
| |
| ... |