llvm-svn: 78838

the basic block label printing to check whether a block has a name
before printing a comment character and whitespace for it.

llvm-svn: 78830

that emitted unnecessary whitespace outside of VerboseAsm mode.

llvm-svn: 78828

llvm-svn: 78817

"inlineasmstart/end" strings so that the contents of the directive
are separate from the comment character.  This lets elf targets
get #APP/#NOAPP for free even if they don't use "#" as the comment
character.  This also allows hoisting the darwin stuff up to the
shared TAI class.

llvm-svn: 78737

the code based on this and make it fall through better.

llvm-svn: 78708

and short. Well, it's kinda short. Definitely nasty and brutish.

The front-end generates the register/unregister calls into the SjLj runtime,
call-site indices and landing pad dispatch. The back end fills in the LSDA
with the call-site information provided by the front end. Catch blocks are
not yet implemented.

Built on Darwin and verified no llvm-core "make check" regressions.

llvm-svn: 78625

Add support for printing loop structure information in asm comments.
This definitely slows down asm output so put it under an -asm-exuberant
flag.

This information is useful when doing static analysis of performance
issues.

llvm-svn: 78567

This totally optimizes PIC16 sections by not having an 'isdirective' bit anymore!! ;-)

llvm-svn: 78517

2. Move section switch printing to MCSection virtual method which takes a
   TAI.  This eliminates textual formatting stuff from TLOF.
3. Eliminate SwitchToSectionDirective, getSectionFlagsAsString, and 
   TLOFELF::AtIsCommentChar.

llvm-svn: 78510

A TAI hook is appropriate in this case because this is just an
asm syntax issue, not a semantic difference. TLOF should model
the semantics of the section.

llvm-svn: 78498

llvm-svn: 78432

llvm-svn: 78428

llvm-svn: 78416

Fix some column padding bugs, reorganize things as suggested by Chris
and eliminate complexity.  Yay!

llvm-svn: 78243

llvm-svn: 78242

llvm-svn: 78154

the masm backend.  If anyone cares about masm in the future,
we'll have semantic sections it can hang off of.

llvm-svn: 78096

eliminate IsInTextSection.

llvm-svn: 78017

llvm-svn: 78015

llvm-svn: 77984

llvm-svn: 77976

TLOF, unifying all the dwarf targets at the same time.

llvm-svn: 77889

llvm-svn: 77888

behavior of the LSDA section instead of on some random target hook that
needs to be kept in synch with other points of truth.

llvm-svn: 77855

getLSDASection() to be more specific.  This makes it pretty obvious
that the ELF LSDA section is being specified wrong in PIC mode.  We're
probably getting a lot of startup-time relocations to a readonly page,
which is expensive and bad.

Someone who cares about ELF C++ should investigate this.

llvm-svn: 77847

TAI.

llvm-svn: 77842

llvm-svn: 77834

compute it based on what it knows.  As part of this, rename getSectionForMergeableConstant
to getSectionForConstant because it works for non-mergable constants also.

The only functionality change from this is that Xcore will start dropping
its jump tables into readonly section instead of data section in -static mode.
This should be fine as the linker resolves the relocations.  If this is a
problem, let me know and we'll come up with another solution.

llvm-svn: 77833

llvm-svn: 77821

to:

.quad X

even on a 32-bit system, where X is not 64-bits.  There isn't much that
we can do here, so we just print:

.quad	((X) & 4294967295)

instead.

llvm-svn: 77818

should have no state that is specific to particular globals in the
section.  In this case, it means the removal of the "isWeak" and
"ExplicitSection" bits.  MCSection uses the new form of SectionKind.

To handle isWeak, I introduced a new SectionInfo class, which is
SectionKind + isWeak, and it is used by the part of the code generator
that does classification of a specific global.

The ExplicitSection disappears.  It is moved onto MCSection as a new
"IsDirective" bit.  Since the Name of a section is either a section
or directive, it makes sense to keep this bit in MCSection.  Ultimately
the creator of MCSection should canonicalize (e.g.) .text to whatever
the actual section is.

llvm-svn: 77803

llvm-svn: 77754

need the PreferredEHDataFormat hook, but I have yet-more refactoring to
do before I can zap it.

llvm-svn: 77742

have no functionality change.

llvm-svn: 77741

Simplify operand padding by keying off tabs in the asm stream.  If
padding is disabled, tabs get replaced by spaces except in the case of
the first operand, where the tab is output to line up the operands after
the mnemonics.

Add some better comments and eliminate redundant code.

Fix some testcases to not assume tabs.

llvm-svn: 77740

thing is #if0'd out anyway.  Just simplify the code by reducing the interface.
Not deleting this is essential for Bill's continuing happiness.

llvm-svn: 77736

indicate that it is a predicate, not an emitter.  This eliminates TAI
dependencies on Mangler and GlobalValue.

llvm-svn: 77726

MCSection subclasses yet, but this is a step in the right direction.

llvm-svn: 77708

initialize method, which can be called when an MCContext is available.

llvm-svn: 77687