llvm-svn: 53206

getTargetNode and SelectNodeTo to reduce duplication, and to
make some of the getTargetNode code available to SelectNodeTo.
Use SelectNodeTo instead of getTargetNode in several new
interesting cases, as it mutates nodes in place instead of
creating new ones.

This triggers some scheduling behavior differences due to nodes
being presented to the scheduler in a different order. Some of the
arbitrary scheduling decisions it makes are now arbitrarily made
differently. This is visible in CodeGen/PowerPC/LargeAbsoluteAddr.ll,
where a trivial scheduling difference led to a trivial register
allocation difference.

llvm-svn: 53203

llvm-svn: 53202

properly track dead nodes that are on the original SDNode's operand
list but not the new one, and have no other uses.

llvm-svn: 53201

#include dependency on Support/MathExtras.h in the header file.

llvm-svn: 53200

pool-allocating MachineInstrs.

llvm-svn: 53198

llvm-svn: 53197

llvm-svn: 53196

and rearranging the fields.

llvm-svn: 53195

their cleanup code. 

llvm-svn: 53194

1. LSR runOnLoop is always returning false regardless if any transformation is made.
2. AddUsersIfInteresting can create new instructions that are added to DeadInsts. But there is a later early exit which prevents them from being freed.

llvm-svn: 53193

llvm-svn: 53192

llvm-svn: 53191

llvm-svn: 53190

llvm-svn: 53189

llvm-svn: 53188

llvm-svn: 53187

In a report-XXXXX.html, make the title include the name of the file with the bug.  Patch by Jean-Daniel Dupas!

http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-July/002166.html

llvm-svn: 53184

simple const SDOperand*, which is what's usually needed.

For AddNodeIDOperands, which is small, just duplicate the function to
accept an SDUse*.

For SelectionDAG::getNode - Add an overload that accepts SDUse* that
copies the operands into a temporary SDOperand array, but also has
special-case checks for 0 through 3 operands to avoid the copy in
the common cases.

llvm-svn: 53183

all happened be unnecessary.

llvm-svn: 53182

llvm-svn: 53181

llvm-svn: 53180

llvm-svn: 53179

llvm-svn: 53178

llvm-svn: 53177

Mark the "Bug Type" column as being initially sorted (display the sort ding) so that users can readily see that the table can be sorted.

llvm-svn: 53176

llvm-svn: 53175

also fix the correspondent test (it was expecting more errors than it should. please confirm my fix is correct (at least gcc agrees with me)

llvm-svn: 53174

llvm-svn: 53172

Removed ImmutableMap::SlimFind and replaced it with ImmutableMap::lookup.  The new method does the same thing, except that it returns a pointer to the mapped data type, and not to an internal tree node.

llvm-svn: 53171

llvm-svn: 53170

llvm-svn: 53169

This patch aims to address some of the concerns of PR 2517: http://llvm.org/bugs/show_bug.cgi?id=2517

llvm-svn: 53168

Comment the xor %x, -1 case.

llvm-svn: 53167

llvm-svn: 53166

float value.

llvm-svn: 53165

llvm-svn: 53160

having weak or linkonce or common or extweak LLVM linkage.

llvm-svn: 53158

llvm-svn: 53157

llvm-svn: 53156