memcpy, memset and other intrinsics that only access their arguments
to be readnone if the intrinsic's arguments all point to local memory.
This improves the testcase in the README to readonly, but it could in
theory be made readnone, however this would involve more sophisticated
analysis that looks through the memcpy.

llvm-svn: 92829

bootstrap.

llvm-svn: 92818

synonyms for PPC.

llvm-svn: 92817

llvm-svn: 92796

instructions.  Thumb does not have the restriction that t2 = t+1.

llvm-svn: 92785

It is enough to give the super registers CR0, CR1, ..., and specifying the
sub-registers as well causes confusion in the liveness computations.

llvm-svn: 92778

llvm-svn: 92771

llvm-svn: 92760

llvm-svn: 92694

llvm-svn: 92655

llvm-svn: 92654

llvm-svn: 92653

llvm-svn: 92651

llvm-svn: 92648

llvm-svn: 92647

llvm-svn: 92644

clear what information these functions are actually using.

This is also a micro-optimization, as passing a SDNode * around is
simpler than passing a { SDNode *, int } by value or reference.

llvm-svn: 92564

 Intrinsic::dbg_stoppoint
 Intrinsic::dbg_region_start 
 Intrinsic::dbg_region_end 
 Intrinsic::dbg_func_start
AutoUpgrade simply ignores these intrinsics now.

llvm-svn: 92557

operators. Eli pointed out that it's not obvious what that
would mean.

llvm-svn: 92555

(or (x << c) | (y >> (64 - c))) ==> (shld64 x, y, c)

The isel patterns may not catch all the cases if general dag combine has reduced width of source operands.

llvm-svn: 92513

llvm-svn: 92511

lets the test-elimination work in more conditional-move cases.

llvm-svn: 92508

rules as normal add, and, or, etc.

llvm-svn: 92507

This lets isel fold loads into them in more cases.

llvm-svn: 92506

llvm-svn: 92472

on the example in PR4216.  This doesn't trigger in the testsuite,
so I'd really appreciate someone scrutinizing the logic for
correctness.

llvm-svn: 92458

multiply sequence when the power is a constant integer.  Before, our
codegen for std::pow(.., int) always turned into a libcall, which was
really inefficient.

This should also make many gfortran programs happier I'd imagine.

llvm-svn: 92388

on integers as well and codegen should lower them to branch trees.

llvm-svn: 92382

llvm-svn: 92265

llvm-svn: 92242

to go away from IRBuilder.h

llvm-svn: 92230

llvm-svn: 92222

llvm-svn: 92201

Allow targets to specify the return type of libcalls that are generated for floating point comparisons, rather than hard-coding them as i32.

llvm-svn: 92199

llvm-svn: 92198

llvm-svn: 92197

llvm-svn: 92196

llvm-svn: 92195

llvm-svn: 92194

llvm-svn: 92193