llvm-svn: 132250

There was no way to check if a given register/mode pair was valid. We now return
an error code (-2) instead of asserting. If anyone thinks that an assert
at this point  is really needed, we can autogen a hasValidDwarfRegNum instead.

llvm-svn: 132236

the Win64 EH mechanism to implement GCC-style exceptions. LLVM supports
hardly anything else at this point!

llvm-svn: 132234

subregisters:

When a value is in a subregister, at least report the location as being
the superregister. We should extend the .td files to encode the bit
range so that we can produce a DW_OP_bit_piece.

llvm-svn: 132224

llvm-svn: 132222

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

llvm-svn: 132033

llvm-svn: 131151

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: 130989

llvm-svn: 130984

llvm-svn: 130959

llvm-svn: 130947

llvm-svn: 130944

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

llvm-svn: 130518

llvm-svn: 130501

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

llvm-svn: 130373

llvm-svn: 130326

llvm-svn: 130232

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: 129938

llvm-svn: 129715

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

It broke several builds.

llvm-svn: 129557

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

llvm-svn: 129518

llvm-svn: 128887

llvm-svn: 128504

llvm-svn: 127099

r124468.  Patch by Rafael Avila de Espindola!

llvm-svn: 126297

llvm-svn: 125563

llvm-svn: 125225

llvm-svn: 124468

Add a possibility to switch between CFI directives- and table-based frame description emission. Currently all the backends use table-based stuff.

llvm-svn: 123476

llvm-svn: 123473

so that Dominators.h is *just* domtree.  Also prune #includes a bit.

llvm-svn: 122714

for each constant pool entry.  Using WriteTypeSymbolic here takes time
proportional to the size of the module, for each constant pool entry.

This speeds up -verbose-asm llc on 252.eon (a random testcase at my disposal)
from 4.4s to 2.137s.  llc takes 2.11s with asm-verbose off, so this is now a
pretty reasonable cost for verbose comments.

llvm-svn: 121691

llvm-svn: 119482

s/endScope/endInstruction/g

llvm-svn: 117376