llvm-6502/lib/CodeGen
Chris Lattner a1deca3cd6 fold (mul (add x, c1), c2) -> (add (mul x, c2), c1*c2)
fold (shl (add x, c1), c2) -> (add (shl x, c2), c1<<c2)

This allows us to compile CodeGen/PowerPC/addi-reassoc.ll into:

_test1:
        slwi r2, r4, 4
        add r2, r2, r3
        lwz r3, 36(r2)
        blr
_test2:
        mulli r2, r4, 5
        add r2, r2, r3
        lbz r2, 11(r2)
        extsb r3, r2
        blr

instead of:

_test1:
        addi r2, r4, 2
        slwi r2, r2, 4
        add r2, r3, r2
        lwz r3, 4(r2)
        blr
_test2:
        addi r2, r4, 2
        mulli r2, r2, 5
        add r2, r3, r2
        lbz r2, 1(r2)
        extsb r3, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26535 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-04 23:33:26 +00:00
..
SelectionDAG fold (mul (add x, c1), c2) -> (add (mul x, c2), c1*c2) 2006-03-04 23:33:26 +00:00
AsmPrinter.cpp Move #include "llvm/CodeGen/AsmPrinter.h" to top since it's the interface. 2006-03-03 02:04:29 +00:00
BranchFolding.cpp Remove trailing whitespace 2005-04-21 22:36:52 +00:00
DwarfWriter.cpp Added support for dwarf block data entries. 2006-03-03 21:00:14 +00:00
ELFWriter.cpp add these so I can be less naughty 2005-12-28 06:29:02 +00:00
IntrinsicLowering.cpp Split memcpy/memset/memmove intrinsics into i32/i64 versions, resolving 2006-03-03 00:00:25 +00:00
LiveInterval.cpp Fix LiveInterval::getOverlapingRanges to take things in the right order 2005-10-21 06:41:30 +00:00
LiveIntervalAnalysis.cpp Add explicit #includes of <iostream> 2006-01-22 23:41:00 +00:00
LiveVariables.cpp Add a LiveVariables::VarInfo::dump method 2006-01-04 05:40:30 +00:00
MachineBasicBlock.cpp Remove trailing whitespace 2005-04-21 22:36:52 +00:00
MachineCodeEmitter.cpp mixed-STL programs are big and nasty :( 2005-12-28 02:44:35 +00:00
MachineDebugInfo.cpp Adding basic structure support. 2006-03-03 15:06:57 +00:00
MachineFunction.cpp Adjust to MachineConstantPool interface change: instead of keeping a 2006-02-09 04:46:04 +00:00
MachineInstr.cpp Remove trailing whitespace 2005-04-21 22:36:52 +00:00
Makefile Change Library Names Not To Conflict With Others When Installed 2004-10-27 23:18:45 +00:00
Passes.cpp Alkis agrees that that iterative scan allocator isn't going to be worked on 2005-10-24 04:14:30 +00:00
PHIElimination.cpp Add support for targets (like Alpha) that have terminator instructions which 2006-01-04 07:12:21 +00:00
PhysRegTracker.h Improved PhysRegTracker interface. RegAlloc lazily allocates the register tracker using a std::auto_ptr 2004-02-23 06:10:13 +00:00
PrologEpilogInserter.cpp Always compute max align. 2005-11-06 17:43:20 +00:00
RegAllocLinearScan.cpp Code cleanups, no functionality change 2006-02-23 06:44:17 +00:00
RegAllocLocal.cpp Add explicit #includes of <iostream> 2006-01-22 23:41:00 +00:00
RegAllocSimple.cpp Add explicit #includes of <iostream> 2006-01-22 23:41:00 +00:00
TwoAddressInstructionPass.cpp Add explicit #includes of <iostream> 2006-01-22 23:41:00 +00:00
UnreachableBlockElim.cpp Remove trailing whitespace 2005-04-21 22:36:52 +00:00
VirtRegMap.cpp Fix a bug that Evan exposed with some changes he's making, and that was 2006-02-25 02:17:31 +00:00
VirtRegMap.h Remove trailing whitespace 2005-04-21 22:36:52 +00:00