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

give it a bit more responsibility. Also implement it for MachO.

If hacked to use cfi, 32 bit MachO will produce

.cfi_personality 155, L___gxx_personality_v0$non_lazy_ptr

and 64 bit will produce

.cfi_presonality ___gxx_personality_v0

The general idea is that .cfi_personality gets passed the final symbol. It is
up to codegen to produce it if using indirect representation (like 32 bit
MachO), but it is up to MC to decide which relocations to create.

llvm-svn: 130341

llvm-svn: 130339

llvm-svn: 130326

llvm-svn: 130232

llvm-svn: 130231

symbols.  For example, don't emit:
        .comm   _i,4,2                  ## @i
                                        ## @i

instead emit:
        .comm   _i,4,2                  ## @i

llvm-svn: 130192

Remove previous DwarfCFI hack.

llvm-svn: 130187

Let dwarf writer allocate extra space in the debug location expression. This space, if requested, will be used for complex addresses of the Blocks' variables.

llvm-svn: 130178

llvm-svn: 130171

s/addVariableAddress/addFrameVariableAddress/g

llvm-svn: 130170

Observed this while reading code, so I do not have a test case handy here.

llvm-svn: 130167

llvm-svn: 130116

Fixes PR9787.

llvm-svn: 130115

llvm-svn: 130028

llvm-svn: 130004

llvm-svn: 129938

llvm-svn: 129921

llvm-svn: 129844

llvm-svn: 129715

llvm-svn: 129639

  error in foo.o; no .eh_frame_hdr table will be created.

llvm-svn: 129635

Introduce support to encode Objective-C property information in debugging information generated for an interface.

llvm-svn: 129624

llvm-svn: 129600

Change ELF systems to use CFI for producing the EH tables. This reduces the
size of the clang binary in Debug builds from 690MB to 679MB.

llvm-svn: 129571

Luis Felipe Strano Moraes!

llvm-svn: 129558

It broke several builds.

llvm-svn: 129557

size of the clang binary in Debug builds from 690MB to 679MB.

llvm-svn: 129518

Remove extra bytes that were added for gdb.  We do not have good poiner to understand actual reason behind this fixme. Spot checking suggest that newer gdb does not need this.

llvm-svn: 129461