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* Only do stuff for the REAL number of physical registers we have, not 1024.Chris Lattner2004-02-091-10/+8
| | | | | | | | This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for the first/second pass respectively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11216 91177308-0d34-0410-b5e6-96231b3b80d8
* Finegrainify namespacification, use new MRegisterInfo::isVirtualRegisterChris Lattner2004-01-311-1/+1
| | | | | | | method git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11037 91177308-0d34-0410-b5e6-96231b3b80d8
* Finegrainify namespacificationChris Lattner2004-01-301-4/+17
| | | | | | | Implement LiveVariables::getIndexMachineBasicBlock git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11018 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unneeded check (with the recent change in live variables a useAlkis Evlogimenos2004-01-131-4/+2
| | | | | | | of a physical register is always dominated by a def). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10821 91177308-0d34-0410-b5e6-96231b3b80d8
* Correctly compute live variable information for physical registersAlkis Evlogimenos2004-01-131-19/+12
| | | | | | | | | | | | | | | when an implicitely defined register is later used by an alias. For example: call foo %reg1024 = mov %AL The call implicitely defines EAX but only AL is used. Before this fix no information was available on AL. Now EAX and all its aliases except AL get defined and die at the call instruction whereas AL lives to be killed by the assignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10813 91177308-0d34-0410-b5e6-96231b3b80d8
* Change interface of MachineOperand as follows:Alkis Evlogimenos2003-12-141-2/+2
| | | | | | | | | | | | | | | | a) remove opIsUse(), opIsDefOnly(), opIsDefAndUse() b) add isUse(), isDef() c) rename opHiBits32() to isHiBits32(), opLoBits32() to isLoBits32(), opHiBits64() to isHiBits64(), opLoBits64() to isLoBits64(). This results to much more readable code, for example compare "op.opIsDef() || op.opIsDefAndUse()" to "op.isDef()" a pattern used very often in the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10461 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unecessary if statements when looping on ImplicitDefs.Alkis Evlogimenos2003-12-131-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10444 91177308-0d34-0410-b5e6-96231b3b80d8
* Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke2003-11-111-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
* Added LLVM project notice to the top of every C++ source file.John Criswell2003-10-201-0/+7
| | | | | | | Header files will be on the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
* Change MRegisterDesc::AliasSet, TargetInstrDescriptor::ImplicitDefsAlkis Evlogimenos2003-10-081-15/+19
| | | | | | | | | | | | | | | | | | | | | | and TargetInstrDescriptor::ImplicitUses to always point to a null terminated array and never be null. So there is no need to check for pointer validity when iterating over those sets. Code that looked like: if (const unsigned* AS = TID.ImplicitDefs) { for (int i = 0; AS[i]; ++i) { // use AS[i] } } was changed to: for (const unsigned* AS = TID.ImplicitDefs; *AS; ++AS) { // use *AS } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8960 91177308-0d34-0410-b5e6-96231b3b80d8
* (1) Added special register class containing (for now) %fsr.Vikram S. Adve2003-05-271-1/+1
| | | | | | | | | | | | | | Fixed spilling of %fcc[0-3] which are part of %fsr. (2) Moved some machine-independent reg-class code to class TargetRegInfo from SparcReg{Class,}Info. (3) Renamed MachienOperand::opIsDef to MachineOperand::opIsDefOnly() and related functions and flags. Fixed several bugs where only "isDef" was being checked, not "isDefAndUse". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6341 91177308-0d34-0410-b5e6-96231b3b80d8
* * Keep the BBMap around as long as the pass is liveChris Lattner2003-05-121-8/+23
| | | | | | | | * Change getVarInfo to take real virtual register numbers and offset them itself. This has caused me so much grief, it's not even funny. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6115 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a vector to keep track of which registers are allocatable. Remove FIXMEsChris Lattner2003-05-071-14/+38
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6015 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-add gross hack, it's still necessary. :(Chris Lattner2003-05-061-2/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6012 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove hideously nasty hackChris Lattner2003-05-061-12/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6011 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor cleanupChris Lattner2003-05-011-4/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5976 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MachineInstrInfo -> TargetInstrInfoChris Lattner2003-01-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5272 91177308-0d34-0410-b5e6-96231b3b80d8
* New filesChris Lattner2003-01-131-0/+257
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5262 91177308-0d34-0410-b5e6-96231b3b80d8
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