LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

llvm-svn: 132033

llvm-svn: 131940

llvm-svn: 131936

llvm-svn: 131760

llvm-svn: 131757

llvm-svn: 131756

s/DW_AT_APPLE_objc_class_extension/DW_AT_APPLE_objc_complete_type/g

llvm-svn: 131244

Let Objective-C front-end identify class extension, in dwarf output, using an attribute DW_AT_APPLE_objc_class_extension.

llvm-svn: 131238

Identify end of prologue (and beginning of function body) using DW_LNS_set_prologue_end line table opcode.

llvm-svn: 131194

llvm-svn: 131157

llvm-svn: 131151

DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.

llvm-svn: 131148

this clang will use .debug_frame in, for example,
clang -g -c -m32 test.c
This matches gcc's behaviour. It looks like .debug_frame is a bit bigger
than .eh_frame, but has the big advantage of not being allocated.

llvm-svn: 131140

llvm-svn: 131106

Move CompileUnit::getOrCreateNameSpace() and CompileUnit::addPubType() from DwarfDebug.cpp to DwarfCompileUnit.cpp

llvm-svn: 130991

llvm-svn: 130989

llvm-svn: 130988

llvm-svn: 130987

llvm-svn: 130985

llvm-svn: 130984

llvm-svn: 130964

llvm-svn: 130959

llvm-svn: 130955

llvm-svn: 130947

llvm-svn: 130944

llvm-svn: 130933

who used this flag, and it now emits CFI and doesn't emit this anymore. All
other targets left this flag "false".
<rdar://problem/8486371>

llvm-svn: 130918

it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.

While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.

llvm-svn: 130846

Tighten up check for empty (i.e. no meaningful debug info) module. This fixes dwarf-die2.c test case from gcc test suite.

llvm-svn: 130842

Even if the subprogram is going to use AT_specification, emit DW_AT_MIPS_linkage_name. This helps gdb and fixes var-path-expr.exp regression reported by gdb testsuite.

llvm-svn: 130794

If the front end has emitted llvm.dbg.cu and other debug info anchors (clang does it now) then use them directly. This saves one scan of entire module, to collect debug info, which in turns saves few machine cycles at compile time.

llvm-svn: 130759

This works around a limitation in gdb which is reported by following inherit.exp test failures from gdb testsuite.

gdb.cp/inherit.exp: print g_vB.vB::vb
gdb.cp/inherit.exp: print g_vB.vB::vx
gdb.cp/inherit.exp: print g_vC.vC::vc
gdb.cp/inherit.exp: print g_vC.vC::vx
gdb.cp/inherit.exp: print g_vD.vB::vb
...

llvm-svn: 130702

llvm-svn: 130692

-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637

Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries.
PR 9810

llvm-svn: 130518

llvm-svn: 130504

emmits: .cfi_personality, .cfi_lsda and the moves.

llvm-svn: 130503

llvm-svn: 130501

This fixes clang generated blocks' variables' debug info.
Radar 9279956.

llvm-svn: 130373

llvm-svn: 130343