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[DWARF][M68k] Add new DW_CC for the new M68kRTD calling convention

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Add `DW_CC_M68kRTD` to model the new `llvm::CallingConv::M68kRTD`.

Differential Revision: https://reviews.llvm.org/D152587
This commit is contained in:
Min-Yih Hsu 2023-06-12 10:19:39 -07:00
parent fd84b1a99d
commit 42b707e5b4
4 changed files with 27 additions and 0 deletions
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1
llvm/include/llvm/BinaryFormat/Dwarf.def
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@ -1036,6 +1036,7 @@ HANDLE_DW_CC(0xc8, LLVM_Swift)
HANDLE_DW_CC(0xc9, LLVM_PreserveMost)
HANDLE_DW_CC(0xca, LLVM_PreserveAll)
HANDLE_DW_CC(0xcb, LLVM_X86RegCall)
HANDLE_DW_CC(0xcc, LLVM_M68kRTD)
// From GCC source code (include/dwarf2.h): This DW_CC_ value is not currently
// generated by any toolchain. It is used internally to GDB to indicate OpenCL
// C functions that have been compiled with the IBM XL C for OpenCL compiler and

3
llvm/lib/DebugInfo/DWARF/DWARFTypePrinter.cpp
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@ -620,6 +620,9 @@ void DWARFTypePrinter::appendSubroutineNameAfter(
case CallingConvention::DW_CC_LLVM_X86RegCall:
OS << " __attribute__((regcall))";
break;
case CallingConvention::DW_CC_LLVM_M68kRTD:
OS << " __attribute__((m68k_rtd))";
break;
}
}

21
llvm/test/DebugInfo/M68k/calling-convention.ll Normal file
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@ -0,0 +1,21 @@
; RUN: llc --mtriple=m68k -filetype=obj %s -o %t
; RUN: llvm-dwarfdump -v %t | FileCheck %s
; CHECK-LABEL: DW_TAG_subprogram
; CHECK: DW_AT_calling_convention [DW_FORM_data1] (DW_CC_LLVM_M68kRTD)
define m68k_rtdcc void @foo() !dbg !3 {
entry:
ret void
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2}
!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 17.0.0 (https://github.com/llvm/llvm-project.git)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "foo.c", directory: "/path/to/file")
!2 = !{i32 2, !"Debug Info Version", i32 3}
!3 = distinct !DISubprogram(name: "foo", scope: !4, file: !4, line: 4, type: !5, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !7)
!4 = !DIFile(filename: "./foo.c", directory: "/path/to/file")
!5 = !DISubroutineType(cc: DW_CC_LLVM_M68kRTD, types: !6)
!6 = !{null}
!7 = !{}

2
llvm/test/DebugInfo/M68k/lit.local.cfg Normal file
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@ -0,0 +1,2 @@
if not "M68k" in config.root.targets:
config.unsupported = True