llvm-svn: 70459

memory operands otherwise the writebacks get lost when the inline asm 
doesn't otherwise have side effects.  This fixes rdar://6839427, though
clang really shouldn't generate these anymore.

llvm-svn: 70455

llvm-svn: 70454

llvm-svn: 70453

llvm-svn: 70449

llvm-svn: 70445

which better identifies what the optimization is doing. And is more flexible for
future uses.

llvm-svn: 70440

llvm-svn: 70437

llvm-svn: 70427

llvm-svn: 70425

llvm-svn: 70422

(sext i8 {-128,+,1} to i64) to i64 {-128,+,1}, where the iteration
crosses from negative to positive, but is still safe if the trip
count is within range.

llvm-svn: 70421

llvm-svn: 70416

llvm-svn: 70411

llvm-svn: 70410

llvm-svn: 70408

print sext, zext, and trunc, instead of signextend, zeroextend,
and truncate, respectively, for consistency with the main IR.

llvm-svn: 70405

llvm-svn: 70391

llvm-svn: 70386

llvm-svn: 70379

spillPhysRegAroundRegDefsUses() may have invalidated iterators stored in fixed_ IntervalPtrs. Reset them.

llvm-svn: 70378

llvm-svn: 70375

llvm-svn: 70372

llvm-svn: 70366

anything larger than 64-bits, avoiding a crash.  This should
really be fixed to use APInts, though type legalization happens
to help us out and we get good code on the attached testcase at
least.

This fixes rdar://6836460

llvm-svn: 70360

llvm-svn: 70357

llvm-svn: 70354

Determine allocation 'preference' with right register class. I haven't seen this changing codegen so no test case.

llvm-svn: 70351

an optimization level instead of a simple boolean telling it to generate code
"fast" or the other type of "fast".

llvm-svn: 70347

Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'll change the JIT with a follow-up patch.

llvm-svn: 70343

llvm-svn: 70340

that it can't be trivially eliminated.

llvm-svn: 70334

if indvars happens to optimize away the unused primary induction
variable.

llvm-svn: 70333

llvm-svn: 70331

This should fix PR3379 and PR4064.
Patch inspired by Edwin Török!

llvm-svn: 70328

llvm-svn: 70319

llvm-svn: 70309

llvm-svn: 70302

llvm-svn: 70300

Fix choice of version of Windows callback to use to consider not only the Visual Studio version, but also the Windows SDK version.

Patch by Tareq Siraj.

llvm-svn: 70299