Instead of computing a live interval per physreg, LiveIntervals can
compute live intervals per register unit. This makes impossible the
confusing situation where aliasing registers could have overlapping live
intervals. It should also make fixed interferernce checking cheaper
since registers have fewer register units than aliases.

Live intervals for regunits are computed on demand, using MRI use-def
chains and the new LiveRangeCalc class. Only regunits live in to ABI
blocks are precomputed during LiveIntervals::runOnMachineFunction().

The regunit liveness computations don't depend on LiveVariables.

llvm-svn: 158029

adjacent edges to have compatible ranges.  This simplifies the layout logic for some clients.

llvm-svn: 158028

These LiveRangeCalc methods are to be used when computing a live range
from scratch.

llvm-svn: 158027

Patch by Ivan Llopard.

llvm-svn: 158025

Fixed an issue where LLDB would use armv7-apple-unknown even though armv7-unknown-unknown was specified with the target create command:

(lldb) target create -a armv7-unknown-unknown <executable>

llvm-svn: 158023

the overriding deprecated/unavailable method.
// rdar://11475360

llvm-svn: 158022

Minimum latency determines per-cycle scheduling groups.
Expected latency determines critical path and cost.

llvm-svn: 158021

llvm-svn: 158020

llvm-svn: 158019

llvm-svn: 158017

Fix confusing error message about "expression did not evaluate to an address" when doing 'watchpoint set expression".
Instead of using 0 as the fail_value when invoking ValueObject::GetValueAsUnsigned(), modify the API to take an addition
bool pointer (defaults to NULL) to indicate success/failure of value conversion.

llvm-svn: 158016

CLooG and the CLooG based code generation does not yet correctly derive the
types of the expressions, but just uses i64 for everything. This is incorrect,
but works normally pretty well. However, the recent change of adding parameter
bounds to the context made CLooG generate expressions that contain a lot of very
large integers that possibly don't fit into an i64. This broke the code
generation for several benchmarks.

To get the CLooG based code generation working again, we just don't take into
account any constraints in the context. This brings us back to the theoretical
incorrect, but in practice generally correct code.

The next step will be the isl based code generation. Here we will derive
automatically correct types.

llvm-svn: 158015

expression (a * b + c) that can be implemented as a fused multiply-add (fma)
if the target determines that this will be more efficient. This intrinsic
will be used to implement FP_CONTRACT support and an aggressive FMA formation
mode.

If your target has a fast FMA instruction you should override the
isFMAFasterThanMulAndAdd method in TargetLowering to return true.

llvm-svn: 158014

llvm-svn: 158013

As the failing testcase has been fixed.

This reverts commit 0637f407e6ee7fdccde17fbf9a5fcc4853187b3e.

llvm-svn: 158009

to clang that omits debug information for non-user-defined
methods.

llvm-svn: 158008

llvm-svn: 158007

llvm-svn: 158005

llvm-svn: 158004

James Dennett!

llvm-svn: 158002

llvm-svn: 158001

llvm-svn: 158000

llvm-svn: 157999

[Sanitizer] Use common defines for ASan and TSan runtime. Split defines between interface defines (can be visible in user code that includes interface ASan/TSan headers) and internal defines.

llvm-svn: 157998

[asan] change the order of tests in the asan_test binary. Makes the test runs 2x faster due to DEATH_TEST overhead (see asan issue 77)

llvm-svn: 157997

when single float ABI is selected.

llvm-svn: 157996

llvm-svn: 157995

[Sanitizer] add sanitizer_posix.cc. Move more various functions into sanitizer_libc: sscanf, munmap, memchr

llvm-svn: 157994

llvm-svn: 157993

llvm-svn: 157992

llvm-svn: 157991

llvm-svn: 157990

IntegersSubsetMapping: added exclude operation, that allows to exclude subset of integers from current mapping.

llvm-svn: 157989

llvm-svn: 157988

Changed type of Items collection: from std::vector to std::list.
Also some small fixes made in IntegersSubset.h, IntegersSubsetMapping.h and IntegersSubsetTest.cpp.

llvm-svn: 157987

llvm-svn: 157986

[Sanitizer] Add sanitizer_win.cc for windows-specific implementations of libc functions. Add internal_open.

llvm-svn: 157985

llvm-svn: 157984

This reverts r157970, which was not passing on
  clang-x86_64-darwin10-nobootstrap-RA

llvm-svn: 157983

llvm-svn: 157982