Pretty hackish, but code itself is dirty mess, so we won't make anything worse. :)

llvm-svn: 40472

llvm-svn: 40471

llvm-svn: 40470

load elimination code from RedundantLoadElimination.

llvm-svn: 40469

llvm-svn: 40466

This implements test/Sema/stmt_exprs.c

llvm-svn: 40465

llvm-svn: 40464

llvm-svn: 40462

This speeds up -E on xalancbmk by 2.4%

llvm-svn: 40461

llvm-svn: 40460

bottleneck for -E computation, because every token that starts a line needs
to determine *which* line it is on (so -E mode can insert the appropriate 
vertical whitespace).  This optimization improves this common case where
it is striding through the line # table.

This speeds up -E on xalancbmk by 3.2%

llvm-svn: 40459

llvm-svn: 40458

llvm-svn: 40457

llvm-svn: 40456

2. Fold an if statement into the Assert1 macro call.

llvm-svn: 40455

by Neil Booth.  This fixes Preprocessor/output_paste_avoid.c

llvm-svn: 40454

to use sret or inreg on the function. It is equally illegal to use noreturn
or nounwind on a parameter; they only go with the function. This patch
enforces these rules.

llvm-svn: 40453

Patch by Neil Booth!

llvm-svn: 40452

llvm-svn: 40451

llvm-svn: 40450

llvm-svn: 40449

llvm-svn: 40448

llvm-svn: 40447

llvm-svn: 40446

llvm-svn: 40445

llvm-svn: 40444

llvm-svn: 40443

llvm-svn: 40441

llvm-svn: 40440

undefs.

llvm-svn: 40439

this fixes test/Sema/switch.c.

llvm-svn: 40438

that cannot be suppressed and cannot be redirected:
they are dumped in the current working directory.
When running the testsuite this means that these
files do not end up in the Output directory.  The
best solution I could find is to change directory
into Output before running tests.

llvm-svn: 40437

RUN line in Support.  Give up on sending output
to /dev/null - this cannot always be arranged.

llvm-svn: 40436

Fix -include line so it doesn't reference /dev/null

llvm-svn: 40429

produces warning from make about bad timestamp on /dev/null

Patch by Holger Schurig.

llvm-svn: 40426

llvm-svn: 40424

This speeds up -E on 447.dealII by 5.8%

llvm-svn: 40423

trivial to handle and very very common.  This speeds up -E on 
447.dealII by 2.5%

llvm-svn: 40422

and avoid computing the spelling of tokens when not needed.  This speeds
up -E on 447.dealII by 2.2%

llvm-svn: 40421

without having to get the whole token.  This speeds up -E on 
447.dealII by 1.8%

llvm-svn: 40420