llvm-svn: 58651

llvm-svn: 58631

add a period at the end of the comment, ignoring the fact that the comment would be hard pressed to be considered a sentence, but if it makes Bill happy...

llvm-svn: 58630

This allows SCEV users to effectively calculate trip count.
LSR later on transforms back integer IVs to floating point IVs
later on to avoid int-to-float casts inside the loop.

llvm-svn: 58625

llvm-svn: 58615

llvm-svn: 58593

 * merge two weak functions by making them both alias a third non-weak fn
 * don't reimplement CallSite::hasArgument
 * whitelist the safe linkage types

llvm-svn: 58568

cast from ‘const llvm::PointerType*’ to ‘unsigned int’
loses precision).

llvm-svn: 58561

llvm-svn: 58559

This triggers only 60 times in llvm-test (look at .llvm.bc, not .linked.rbc)
and so it probably wont be turned on by default. Also, may of those are likely
to go away when PR2973 is fixed.

llvm-svn: 58557

by Richard Osborne.

llvm-svn: 58555

ConstantInt, and SI is the original cast instruction. This fixes
PR2996.

llvm-svn: 58549

llvm-svn: 58486

optimizations accordingly.

llvm-svn: 58457

function.
 - This explicitly models the costs for functions which should
   "always" or "never" be inlined. This fixes bugs where such costs
   were not previously respected.

llvm-svn: 58450

I don't really see this as being needed, but there is little harm from doing
it.

llvm-svn: 58385

 - No functionality change.

llvm-svn: 58355

 - No functionality change.

llvm-svn: 58352

llvm-svn: 58351

that need it to require it by ID.

llvm-svn: 58238

LargeBlockInfo, we can now dramatically simplify their implementation
and speed them up at the same time.  Now the code has time proportional
to the number of uses of the alloca, not the size of the block.

This also eliminates code that tried to batch up different allocas which
are used in the same blocks, and eliminates the 'retry list' logic which
was baroque and no unneccesary.  In addition to being a speedup for crazy
cases, this is also a nice cleanup:

PromoteMemoryToRegister.cpp |  270 +++++++++++++++-----------------------------
 1 file changed, 96 insertions(+), 174 deletions(-)

llvm-svn: 58229

a trivial dense map.  Use this in RewriteSingleStoreAlloca to
avoid aggressively rescanning blocks over and over again.  This
fixes PR2925, speeding up mem2reg on the testcase in that bug
from 4.56s to 0.02s in a debug build on my machine.

llvm-svn: 58227

Understand that mul %x, 1 = %x.

llvm-svn: 58069

LoopPass*.
 - Although less precise, this means they can be used in clients
   without RTTI (who would otherwise need to include LoopPass.h, which
   eventually includes things using dynamic_cast). This was the
   simplest solution that presented itself, but I am happy to use a
   better one if available.

llvm-svn: 58010

llvm-svn: 57870

llvm-svn: 57864

llvm-svn: 57660

to find opportunities for store-to-load forwarding or load CSE,
in the same way that visitStore scans back to do DSE. Also, define
a new helper function for testing whether the addresses of two
memory accesses are known to have the same value, and use it in
both visitStore and visitLoad.

These two changes allow instcombine to eliminate loads in code
produced by front-ends that frequently emit obviously redundant
addressing for memory references.

llvm-svn: 57608

llvm-svn: 57515

- Renumber fcmp predicates to match their icmp counterparts.
- Try swapping operands to expose more optimization opportunities.

llvm-svn: 57513

     ord && olt -> olt
     ord && ueq -> oeq

llvm-svn: 57507

constant expression with all zero indices as being the same as a bitcast.

llvm-svn: 57442

a couple other cases for clarity, but shouldn't affect correctness.

Patch by Eli Friedman!

llvm-svn: 57387

This patch fixes PR 2869

llvm-svn: 57369

llvm-svn: 57353

and APFloat::convertToInteger.  Restore return value to
IEEE754.  Adjust all users accordingly.

llvm-svn: 57329

llvm-svn: 57320

llvm-svn: 57305

Patch by Samuel Tardieu.

llvm-svn: 57291

patch by Samuel Tardieu!

llvm-svn: 57288