Evan Cheng 1ad0e8b576 Canonicalize -1 - x to ~x. ...

Instcombine does this but apparently there are situations where this pattern will escape the optimizer and / or created by isel. Here is a case that's seen in JavaScriptCore:
  %t1 = sub i32 0, %a
  %t2 = add i32 %t1, -1
The dag combiner pattern: ((c1-A)+c2) -> (c1+c2)-A
will fold it to -1 - %a.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93773 91177308-0d34-0410-b5e6-96231b3b80d8

2010-01-18 21:38:44 +00:00

..

CallingConvLower.cpp

Change errs() to dbgs().

2010-01-05 01:24:50 +00:00

CMakeLists.txt

Rename SelectionDAGLowering to SelectionDAGBuilder, and rename

2009-11-23 18:04:58 +00:00

DAGCombiner.cpp

Canonicalize -1 - x to ~x.

2010-01-18 21:38:44 +00:00

FastISel.cpp

Improve llvm.dbg.declare intrinsic by referring directly to the storage in its first argument, via function-local metadata (instead of via a bitcast).

2010-01-15 19:04:09 +00:00

FunctionLoweringInfo.cpp

Avoid going through the LLVMContext for type equality where it's safe to dereference the type pointer.

2010-01-05 13:12:22 +00:00

FunctionLoweringInfo.h

Move CopyCatchInfo into FunctionLoweringInfo.cpp too, for consistency.

2009-11-23 18:12:11 +00:00

InstrEmitter.cpp

Target-independent support for TargetFlags on BlockAddress operands,

2009-11-20 23:18:13 +00:00

InstrEmitter.h

Fix a typo in a comment.

2009-11-16 20:35:59 +00:00

LegalizeDAG.cpp

Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode

2010-01-09 02:13:55 +00:00

LegalizeFloatTypes.cpp

Change errs() to dbgs().

2010-01-05 01:24:48 +00:00

LegalizeIntegerTypes.cpp

Change errs() to dbgs().

2010-01-05 01:24:34 +00:00

LegalizeTypes.cpp

Change errs() to dbgs().

2010-01-05 01:25:04 +00:00

LegalizeTypes.h

Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode

2010-01-09 02:13:55 +00:00

LegalizeTypesGeneric.cpp

Remove dead variable.

2009-12-28 01:00:12 +00:00

LegalizeVectorOps.cpp

Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode

2010-01-09 02:13:55 +00:00

LegalizeVectorTypes.cpp

Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode

2010-01-09 02:13:55 +00:00

Makefile

remove dead makefile flags.

2009-06-24 05:29:56 +00:00

ScheduleDAGFast.cpp

Change errs() to dbgs().

2010-01-05 01:25:09 +00:00

ScheduleDAGList.cpp

Change errs() to dbgs().

2010-01-05 01:24:43 +00:00

ScheduleDAGRRList.cpp

The previous code could potentially cause a cycle. Allow ordering w.r.t. a 0 order.

2010-01-06 00:23:35 +00:00

ScheduleDAGSDNodes.cpp

Change errs() to dbgs().

2010-01-05 01:25:11 +00:00

ScheduleDAGSDNodes.h

Initial target-independent CodeGen support for BlockAddresses.

2009-10-30 01:27:03 +00:00

SDNodeOrdering.h

Allow 0 as an order number. Don't assign an order to formal arguments.

2009-12-22 21:35:02 +00:00

SelectionDAG.cpp

Add some debug routines to SelectionDAG to dump full DAGs.

2010-01-15 19:43:23 +00:00

SelectionDAGBuilder.cpp

When checking for sret-demotion, it needs to use legal types. When using the return value of an sret-demoted call, it needs to use possibly illegal types that match the declared Type of the callee.

2010-01-16 23:37:33 +00:00

SelectionDAGBuilder.h

whitespace cleanup

2010-01-01 23:37:34 +00:00

SelectionDAGISel.cpp

Add some debug routines to SelectionDAG to dump full DAGs.

2010-01-15 19:43:23 +00:00

SelectionDAGPrinter.cpp

Change errs() to dbgs().

2010-01-05 01:24:45 +00:00

TargetLowering.cpp

Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode

2010-01-09 02:13:55 +00:00