Chris Lattner 3603cd62ae Turn any_extend nodes into zero_extend nodes when it allows us to remove an ... and instruction. This allows us to compile stuff like this: bool %X(int %X) { %Y = add int %X, 14 %Z = setne int %Y, 12345 ret bool %Z } to this: _X: cmpl $12331, 4(%esp) setne %al movzbl %al, %eax ret instead of this: _X: cmpl $12331, 4(%esp) setne %al movzbl %al, %eax andl $1, %eax ret This occurs quite a bit with the X86 backend. For example, 25 times in lambda, 30 times in 177.mesa, 14 times in galgel, 70 times in fma3d, 25 times in vpr, several hundred times in gcc, ~45 times in crafty, ~60 times in parser, ~140 times in eon, 110 times in perlbmk, 55 on gap, 16 times on bzip2, 14 times on twolf, and 1-2 times in many other SPEC2K programs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25901 91177308-0d34-0410-b5e6-96231b3b80d8		2006-02-02 07:17:31 +00:00
..
SelectionDAG	Turn any_extend nodes into zero_extend nodes when it allows us to remove an	2006-02-02 07:17:31 +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
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