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Use the target triple from the target machine rather than the module

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to determine whether or not we're on a darwin platform for debug code
emitting.

Solves the problem of a module with no triple on the command line
and no triple in the module using non-gdb ok features on darwin. Fix
up the member-pointers test to check the correct things for cross
platform (DW_FORM_flag is a good prefix).

Unfortunately no testcase because I have no ideas how to test something
without a triple and without a triple in the module yet check
precisely on two platforms. Ideas welcome.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180660 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2013-04-27 01:07:52 +00:00
parent 85c16ef612
commit 00297bad0d
4 changed files with 9 additions and 2 deletions
include/llvm/CodeGen
AsmPrinter.h
lib/CodeGen/AsmPrinter
AsmPrinter.cppDwarfDebug.cpp
test/DebugInfo
member-pointers.ll

3
include/llvm/CodeGen/AsmPrinter.h

@ -135,6 +135,9 @@ namespace llvm {
/// getDataLayout - Return information about data layout.
const DataLayout &getDataLayout() const;
/// getTargetTriple - Return the target triple string.
StringRef getTargetTriple() const;
/// getCurrentSection() - Return the current section we are emitting to.
const MCSection *getCurrentSection() const;

4
lib/CodeGen/AsmPrinter/AsmPrinter.cpp

@ -133,6 +133,10 @@ const DataLayout &AsmPrinter::getDataLayout() const {
return *TM.getDataLayout();
}
StringRef AsmPrinter::getTargetTriple() const {
return TM.getTargetTriple();
}
/// getCurrentSection() - Return the current section we are emitting to.
const MCSection *AsmPrinter::getCurrentSection() const {
return OutStreamer.getCurrentSection().first;

2
lib/CodeGen/AsmPrinter/DwarfDebug.cpp

@ -176,7 +176,7 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
// Turn on accelerator tables and older gdb compatibility
// for Darwin.
bool IsDarwin = Triple(M->getTargetTriple()).isOSDarwin();
bool IsDarwin = Triple(A->getTargetTriple()).isOSDarwin();
if (DarwinGDBCompat == Default) {
if (IsDarwin)
IsDarwinGDBCompat = true;

2
test/DebugInfo/member-pointers.ll

@ -7,7 +7,7 @@
; CHECK: [[TYPE:.*]]: DW_TAG_subroutine_type
; CHECK: DW_TAG_formal_parameter
; CHECK-NEXT: DW_AT_type
; CHECK-NEXT: DW_AT_artificial [DW_FORM_flag_present]
; CHECK-NEXT: DW_AT_artificial [DW_FORM_flag
; CHECK: DW_TAG_ptr_to_member_type
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + {{.*}} => {[[TYPE]]})
; IR generated from clang -g with the following source: