llvm-svn: 106856

is not used.  Spotted by gcc-4.6.

llvm-svn: 106854

llvm-svn: 106841

buffer in the same chunk of memory.

2 less mallocs for every uninitialized MemoryBuffer and 1 less malloc for every
MemoryBuffer pointing to a memory range translate into 20% less mallocs on
clang -cc1 -Eonly Cocoa_h.m.

llvm-svn: 106839

and CallInst for getting hold
of the intrinsic's arguments

simplify along the way (at least for me this is much more legible now)
Bill, Baldrick or Anton, please review\!

llvm-svn: 106838

llvm-svn: 106837

llvm-svn: 106836

llvm-svn: 106835

llvm-svn: 106833

llvm-svn: 106829

llvm-svn: 106828

llvm-svn: 106827

llvm-svn: 106825

llvm-svn: 106824

use ArgOperand API; tighten type of handleFreeWithNonTrivialDependency to be able to use isFreeCall whithout a cast or new overload

llvm-svn: 106823

Radar 8128745.

llvm-svn: 106820

llvm-svn: 106819

is reused as an input.  PR 4118.  Testcase is too big,
as usual with bugs in this area, but there's one in
the PR.

llvm-svn: 106816

llvm-svn: 106815

This fixes PR7479 and PR7485. The test cases from those PRs are big, so not
included. However, PR7485 comes from self hosting on FreeBSD, so we will surely
hear about any regression.

llvm-svn: 106811

llvm-svn: 106809

llvm-svn: 106808

and to clean up unused incoming physregs from the live-in list.

llvm-svn: 106805

llvm-svn: 106804

llvm-svn: 106796

original SDNode. This is badness. Also, this function allows one SDNode to point
multiple flags to another SDNode. Badness as well.

llvm-svn: 106793

DBG_VALUE machine instruction pointing to undefined register for a variable justify a separate scope if the variable is inlined function's argument.
Radar 8122864.

llvm-svn: 106792

vector instead. This avoids needless copying and allocation.

Add documentation.

llvm-svn: 106788

- Fix a small VEX encoding issue.
- Move compare instructions to their appropriate place.

llvm-svn: 106787

This method was always a bit too simplistic for the real world. It didn't really
deal with subregisters and such.

llvm-svn: 106781

llvm-svn: 106780

address requires a register or secondary load to compute
(most PIC modes).  This improves "g" constraint handling.  8015842.

The test from 2007 is attempting to test the fix for PR1761,
but since -relocation-model=static doesn't work on Darwin
x86-64, it was not testing what it was supposed to be testing
and was passing erroneously.  Fixed to use Linux x86-64.

llvm-svn: 106779

This code path has never really been used, and we are going to be handling
spilling through the Spiller interface in the future.

llvm-svn: 106777

llvm-svn: 106775

which don't have a catch-all associated with them not just clean-ups. This fixes
the SingleSource/Benchmarks/Shootout-C++/except.cpp testcase that broke because
of my change r105902.

llvm-svn: 106772

llvm-svn: 106770

CoalescerPair can determine if a copy can be coalesced, and which register gets
merged away. The old logic in SimpleRegisterCoalescing had evolved into
something a bit too convoluted.

This second attempt fixes some crashes that only occurred Linux.

llvm-svn: 106769

llvm-svn: 106768

[L]oad, [u]se, [d]ef, or [S]tore slots.

This makes it easier to see if two indices refer to the same instruction,
avoiding mental mod 4 calculations.

llvm-svn: 106766

which trivially fold away.

llvm-svn: 106765