llvm-svn: 98122

The Caller cost info would be reset everytime a callee was inlined. If the
caller has lots of calls and there is some mutual recursion going on, the
caller cost info could be calculated many times.

This patch reduces inliner runtime from 240s to 0.5s for a function with 20000
small function calls.

This is a more conservative version of r98089 that doesn't break the clang
test CodeGenCXX/temp-order.cpp. That test relies on rather extreme inlining
for constant folding.

llvm-svn: 98099

llvm-svn: 98094

The Caller cost info would be reset everytime a callee was inlined. If the
caller has lots of calls and there is some mutual recursion going on, the
caller cost info could be calculated many times.

This patch reduces inliner runtime from 240s to 0.5s for a function with 20000
small function calls.

llvm-svn: 98089

llvm-svn: 98024

llvm-svn: 98000

This is a first step towards eliminating checks in Descriptor constructors.

llvm-svn: 97975

llvm-svn: 97963

This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.

llvm-svn: 97947

before we try to optimize.

llvm-svn: 97876

out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.

llvm-svn: 97875

Log:
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.

Modified:
   llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
   llvm/trunk/test/Transforms/InstCombine/objsize.ll

It appears to be causing swb and nightly test failures.

llvm-svn: 97866

llvm-svn: 97860

llvm-svn: 97846

can be used in more places.  Add an argument for the TargetData that
most of them need. Update for the getInt8PtrTy() change.  Should be
no functionality change.

llvm-svn: 97844

Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size.

llvm-svn: 97828

llvm-svn: 97827

from different addr spaces.

llvm-svn: 97813

parts of the cmp|cmp and cmp&cmp folding logic wasn't prepared for vectors
(unrelated to the bug but noticed while in the code) and the code was 
*definitely* not safe to use by the (cast icmp)|(cast icmp) handling logic
that I added in r95855.  Fix all this up by changing the various routines
to more consistently use IRBuilder and not pass in the I which had the wrong 
type.

llvm-svn: 97801

compares, noticed by inspection.

llvm-svn: 97795

in a very specific use pattern embodied in the carefully
reduced testcase.

llvm-svn: 97794

No functionality change.

llvm-svn: 97793

Add missing break for Intrinsic::objectsize case. It was falling through to the following Intrinsic::bswap code. I have no idea why it wasn't breaking stuff.

llvm-svn: 97774

of loops.

llvm-svn: 97642

long test(long x) { return (x & 123124) | 3; }

Currently compiles to:

_test:
        orl     $3, %edi
        movq    %rdi, %rax
        andq    $123127, %rax
        ret

This is because instruction and DAG combiners canonicalize

  (or (and x, C), D) -> (and (or, D), (C | D))

However, this is only profitable if (C & D) != 0. It gets in the way of the
3-addressification because the input bits are known to be zero.

llvm-svn: 97616

emitted after the increment. Make sure the insert position
reflects this. This fixes PR6453.

llvm-svn: 97537

respectively.

llvm-svn: 97531

a loop and is itself the only dependency).

llvm-svn: 97526

predecessors before returning.  Otherwise, if multiple predecessor edges need
splitting, we only get one of them per iteration.  This makes a small but
measurable compile time improvement with -enable-full-load-pre.

llvm-svn: 97521

llvm-svn: 97512

llvm-svn: 97458

llvm-svn: 97453

llvm-svn: 97448

llvm-svn: 97366

llvm-svn: 97313

of a subtle interation in a loop operating in densemap order.

llvm-svn: 97288

confusing the old MAT variable with the new GlobalType one.  This caused
us to promote the @disp global pointer into:

@disp.body = internal global double*** undef

instead of:

@disp.body = internal global [3 x double**] undef

llvm-svn: 97285

llvm-svn: 97283

argument of createGVNPass and set it automatically for -O3.

llvm-svn: 97245

llvm-svn: 97235