Chris Lattner b3ddfc42af add two dag combines: ... (C1-X) == C2 --> X == C1-C2 (X+C1) == C2 --> X == C2-C1 This allows us to compile this: bool %X(int %X) { %Y = add int %X, 14 %Z = setne int %Y, 12345 ret bool %Z } into this: _X: cmpl $12331, 4(%esp) setne %al movzbl %al, %eax andl $1, %eax ret not this: _X: movl $14, %eax addl 4(%esp), %eax cmpl $12345, %eax setne %al movzbl %al, %eax andl $1, %eax ret Testcase here: Regression/CodeGen/X86/compare-add.ll nukage of the and coming up next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25898 91177308-0d34-0410-b5e6-96231b3b80d8		2006-02-02 06:36:13 +00:00
..
SelectionDAG	add two dag combines:	2006-02-02 06:36:13 +00:00
AsmPrinter.cpp	Implement smart printing of inline asm strings, handling variants and	2006-02-01 22:41:11 +00:00
BranchFolding.cpp
DwarfWriter.cpp	Using bit size of integers instead of ambiguous "long" et all.	2006-01-27 20:31:25 +00:00
ELFWriter.cpp
IntrinsicLowering.cpp	For PR411:	2006-01-16 21:12:35 +00:00
LiveInterval.cpp
LiveIntervalAnalysis.cpp	Add explicit #includes of <iostream>	2006-01-22 23:41:00 +00:00
LiveVariables.cpp
MachineBasicBlock.cpp
MachineCodeEmitter.cpp
MachineDebugInfo.cpp	Fix build error that is apparently only a warning with some compilers.	2006-01-27 17:31:30 +00:00
MachineFunction.cpp	Allow the specification of explicit alignments for constant pool entries.	2006-01-31 22:23:14 +00:00
MachineInstr.cpp
Makefile
Passes.cpp
PHIElimination.cpp
PhysRegTracker.h
PrologEpilogInserter.cpp
RegAllocLinearScan.cpp	Add explicit #includes of <iostream>	2006-01-22 23:41:00 +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
VirtRegMap.cpp	Add explicit #includes of <iostream>	2006-01-22 23:41:00 +00:00
VirtRegMap.h