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50af16a97b
for (X * C1) + (X * C2) (where * can be mul or shl), allowing us to fold:
Y+Y+Y+Y+Y+Y+Y+Y
into
%tmp.8 = shl long %Y, ubyte 3 ; <long> [#uses=1]
instead of
%tmp.4 = shl long %Y, ubyte 2 ; <long> [#uses=1]
%tmp.12 = shl long %Y, ubyte 2 ; <long> [#uses=1]
%tmp.8 = add long %tmp.4, %tmp.12 ; <long> [#uses=1]
This implements add.ll:test25
Also add support for (X*C1)-(X*C2) -> X*(C1-C2), implementing sub.ll:test18
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17704 91177308-0d34-0410-b5e6-96231b3b80d8
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| .. | ||
| ADCE.cpp | ||
| BasicBlockPlacement.cpp | ||
| ConstantProp.cpp | ||
| CorrelatedExprs.cpp | ||
| DCE.cpp | ||
| DeadStoreElimination.cpp | ||
| GCSE.cpp | ||
| IndVarSimplify.cpp | ||
| InstructionCombining.cpp | ||
| LICM.cpp | ||
| LoopStrengthReduce.cpp | ||
| LoopUnroll.cpp | ||
| LoopUnswitch.cpp | ||
| LowerConstantExprs.cpp | ||
| LowerGC.cpp | ||
| LowerPacked.cpp | ||
| Makefile | ||
| PRE.cpp | ||
| Reassociate.cpp | ||
| ScalarReplAggregates.cpp | ||
| SCCP.cpp | ||
| SimplifyCFG.cpp | ||
| SymbolStripping.cpp | ||
| TailDuplication.cpp | ||
| TailRecursionElimination.cpp | ||