Chris Lattner 97ae12a988 change iterator invalidation avoidance to just move the iterator backward ...

when something changes, instead of moving forward.  This allows us to 
simplify memset lowering, inserting the memset at the end of the range of 
stuff we're touching instead of at the start.

This, in turn, allows us to make use of the addressing instructions already
used in the function instead of inserting our own.  For example, we now
codegen:

	%tmp41 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 0		; <i8*> [#uses=2]
	call void @llvm.memset.i64( i8* %tmp41, i8 -1, i64 8, i32 1 )

instead of:

	%tmp20 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 7		; <i8*> [#uses=1]
	%ptroffset = getelementptr i8* %tmp20, i64 -7		; <i8*> [#uses=1]
	call void @llvm.memset.i64( i8* %ptroffset, i8 -1, i64 8, i32 1 )



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48940 91177308-0d34-0410-b5e6-96231b3b80d8

2008-03-29 05:15:47 +00:00

..

ADCE.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

BasicBlockPlacement.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

CodeGenPrepare.cpp

Handle getresult instructions in different basic blocks

2008-03-21 21:01:32 +00:00

CondPropagate.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

ConstantProp.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

DCE.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

DeadStoreElimination.cpp

Be more precise when eliminating pointers bue to memcpy's. This allows more

2008-02-04 04:53:00 +00:00

GCSE.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

GVN.cpp

change iterator invalidation avoidance to just move the iterator backward

2008-03-29 05:15:47 +00:00

GVNPRE.cpp

Make Transforms to be 4.3 warnings-clean

2008-02-20 11:26:25 +00:00

IndVarSimplify.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

InstructionCombining.cpp

Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it.

2008-03-25 20:07:13 +00:00

LICM.cpp

Use empty() instead of comparing size() with zero.

2008-01-29 13:02:09 +00:00

LoopIndexSplit.cpp

PHI->removeIncomingValue may remove PHInode.

2008-03-27 17:32:46 +00:00

LoopRotation.cpp

Fix PR2028

2008-02-15 01:24:49 +00:00

LoopStrengthReduce.cpp

Remove dead options.

2008-03-19 22:02:26 +00:00

LoopUnroll.cpp

Add comment.

2008-03-19 23:05:52 +00:00

LoopUnswitch.cpp

Update the block cloner which fixes bugpoint on code using unwind_to (phew!)

2008-03-09 05:24:34 +00:00

Makefile

…

PredicateSimplifier.cpp

De-tabify.

2008-02-26 10:53:30 +00:00

Reassociate.cpp

Don't include <map> in Pass.h, which doesn't need it. This requires

2008-03-21 23:51:57 +00:00

Reg2Mem.cpp

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

Scalar.cpp

C and Objective Caml bindings for mem2reg and reg2mem.

2008-03-20 17:16:03 +00:00

ScalarReplAggregates.cpp

fix a bug Anders ran into where scalarrepl would crash when promoting

2008-02-29 07:12:06 +00:00

SCCP.cpp

Don't include <map> in Pass.h, which doesn't need it. This requires

2008-03-21 23:51:57 +00:00

SimplifyCFG.cpp

simplify code, no functionality change.

2008-02-14 07:39:01 +00:00

TailDuplication.cpp

Don't include <map> in Pass.h, which doesn't need it. This requires

2008-03-21 23:51:57 +00:00

TailRecursionElimination.cpp

Become multiple return value aware.

2008-03-11 17:33:32 +00:00