llvm-svn: 59012

llvm-svn: 59011

then do not split loop index.

llvm-svn: 58995

The previous patches didn't match correctly. Also, we need to make sure that
the conditional is the same before doing the transformation.

llvm-svn: 58978

<result> = shufflevector <n x <ty>> <v1>, <n x <ty>> <v2>, <m x i32> <mask> 

llvm-svn: 58964

of the select match, not the select instruction itself.

llvm-svn: 58947

original code was matching like this:

	if (match(A, m_Not(m_Value(B))))

B was already matched as a 'select' instruction. However, this isn't matching
what we think it's matching. It would match B as a 'Value', so basically
anything would match to it. In this case, a Constant matched. B was replaced
with a constant representation. And then the wrong value would be used in the
SelectInst::Create statement, causing a crash.

After thinking on this for a moment, and after Nick L. told me how the pattern
matching stuff was supposed to work, the solution was to match NOT an m_Value,
but an m_Select.

llvm-svn: 58946

llvm-svn: 58933

to generate signed ICMP instructions to replace the FCMP. This would violate
the following:

define i1 @test1(i32 %val) {
  %1 = uitofp i32 %val to double
  %2 = fcmp ole double %1, 0.000000e+00
  ret i1 %2
}

would be transformed into:

define i1 @test1(i32 %val) {
  %1 = icmp slt i33 %val, 1
  ret i1 %1
}

which is obviously wrong. This patch modifes InstCombiner::FoldFCmp_IntToFP_Cst
to handle when the LHS comes from UIToFP.

llvm-svn: 58929

promotion.
 - Eliminate uses after free and simplify tests.

Devang: Please check that this is still doing what you intended.
llvm-svn: 58887

llvm-svn: 58830

llvm-svn: 58826

when simplify a vector. 

llvm-svn: 58820

llvm-svn: 58787

llvm-svn: 58744

llvm-svn: 58742

llvm-svn: 58736

a specialized pass that it not likely to be generally useful.

llvm-svn: 58732

huge performance regression in something we care
about.  This may not be final fix.

llvm-svn: 58718

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