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path: root/lib/CodeGen/RegAllocLocal.cpp
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2005-04-21Remove trailing whitespaceMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23Update this pass to set PhysRegsUsed info in MachineFunction.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19792 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-26Clean up the MachineBasicBlock.h file, percolating #includes into this file.Chris Lattner
Patch contributed by Morten Ofstad git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17251 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-01Changes For Bug 352Reid Spencer
Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-15Reduce usage of MRegisterInfo::getRegClassChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15784 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-15Nuke ifdef'd out codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15777 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-15Stop using CreateStackObject(RegClass*)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15775 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-15These methods no longer take a TargetRegisterClass* operand.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15774 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21These files don't need to include <iostream> since they include ↵Brian Gaeke
"Support/Debug.h". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15089 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-16Fix a recent regression in Applications/sgefa that Alkis pointed out to me.Chris Lattner
The vector may actually be empty if the register that we are marking as recently used is not actually allocatable. This happens for physical registers that are not allocatable, like the ST(x) registers on X86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14195 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-02Adjust to new TargetMachine interfaceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13956 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-14Change MRegisterInfo::foldMemoryOperand to return the foldedAlkis Evlogimenos
instruction to make the API more flexible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12386 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-26Uncomment assertions that register# != 0 on calls toAlkis Evlogimenos
MRegisterInfo::is{Physical,Virtual}Register. Apply appropriate fixes to relevant files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11882 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-26No need to clear the map here, it will always be emptyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11868 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-25Add DenseMap template and actually use it for for mapping virtual regsAlkis Evlogimenos
to objects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11840 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Refactor rewinding code for finding the first terminator of a basicAlkis Evlogimenos
block into MachineBasicBlock::getFirstTerminator(). This also fixes a bug in the implementation of the above in both RegAllocLocal and InstrSched, where instructions where added after the terminator if the basic block's only instruction was a terminator (it shouldn't matter for RegAllocLocal since this case never occurs in practice). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11748 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Another bug fix for empty MBB'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11716 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Fix a bug where we were implicitly assuming that there would be at leastChris Lattner
one terminator instruction in each basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-21Make 'fold' statistic's description the same in both allocators.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11687 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-19Fix problem fusing spill code into instructions: we didn't update the liveChris Lattner
variable information to take into account the change of instruction address. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11628 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-19Rename reloads/spills to loads/stores.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11619 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-17Remove the -disable-kill option. The register allocator is buggy with it,Chris Lattner
and it was only for debugging in the first place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11557 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-17Add support to the local allocator for fusing spill code into the instructionsChris Lattner
that need them. This is very useful on CISCy targets like the X86 because it reduces the total spill pressure, and makes better use of it's (large) instruction set. Though the X86 backend doesn't know how to rewrite many instructions yet, this already makes a substantial difference on 176.gcc for example: Before: Time: 8.0099 ( 31.2%) 0.0100 ( 12.5%) 8.0199 ( 31.2%) 7.7186 ( 30.0%) Local Register Allocator Code quality: 734559 asm-printer - Number of machine instrs printed 111395 ra-local - Number of registers reloaded 79902 ra-local - Number of registers spilled 231554 x86-peephole - Number of peephole optimization performed After: Time: 7.8700 ( 30.6%) 0.0099 ( 19.9%) 7.8800 ( 30.6%) 7.7892 ( 30.2%) Local Register Allocator Code quality: 733083 asm-printer - Number of machine instrs printed 2379 ra-local - Number of reloads fused into instructions 109046 ra-local - Number of registers reloaded 79881 ra-local - Number of registers spilled 230658 x86-peephole - Number of peephole optimization performed So by fusing 2300 instructions, we reduced the static number of instructions by 1500, and reduces the number of peepholes (and thus the work) by about 900. This also clearly reduces the number of reload/spill instructions that are emitted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11542 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-17Fix a bug in my previous refactoring change... arg!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11535 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-17Once we have a way to fold spill code reloads into instructions, we have a ↵Chris Lattner
way to use it. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11517 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-17Refactor code a bit. No functionality changes, though the comment hints at ↵Chris Lattner
things to come. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11515 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-15Make dense maps keyed on physical registers smallerusingAlkis Evlogimenos
MRegisterInfo::getNumRegs() instead of MRegisterInfo::FirstVirtualRegister. Also use MRegisterInfo::is{Physical,Virtual}Register where appropriate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11477 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-13Remove getAllocatedRegNum(). Use getReg() instead.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11393 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-13Use getNumVirtualRegs().Alkis Evlogimenos
Whitespace cleanups. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11389 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-12Change MachineBasicBlock's vector of MachineInstr pointers into anAlkis Evlogimenos
ilist of MachineInstr objects. This allows constant time removal and insertion of MachineInstr instances from anywhere in each MachineBasicBlock. It also allows for constant time splicing of MachineInstrs into or out of MachineBasicBlocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11340 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-10Do not use MachineOperand::isVirtualRegister either!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11283 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-10Eliminate users of MachineOperand::isPhysicalRegisterChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11278 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Another nice speedup for the register allocator. This time, we replaceChris Lattner
the Virt2PhysRegMap std::map with an std::vector. This speeds up the register allocator another (almost) 40%, from .72->.45s in a release build of LLC on 253.perlbmk. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11219 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Change the PhysRegsUsed map into a dense array. Seeing that this is a mappingChris Lattner
from physical registers, and they are always dense, it makes sense to not have a ton of RBtree overhead. This change speeds up regalloclocal about ~30% on 253.perlbmk, from .35s -> .27s in the JIT (in LLC, it goes from .74 -> .55). Now live variable analysis is the slowest codegen pass. Of course it doesn't help that we have to run it twice, because regalloclocal doesn't update it, but even if it did it would be the slowest pass (now it's just the 2x slowest pass :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11215 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Finegrainify namespacification, use new MRegisterInfo::isVirtualRegisterChris Lattner
method git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11037 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13Correctly compute live variable information for physical registersAlkis Evlogimenos
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
2003-12-18Remove TwoAddressInstruction from the public headers and add an IDAlkis Evlogimenos
instead, since this pass doesn't expose any state to its users. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10520 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Modify local register allocator to use the two-address instruction pass.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10513 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-14Change interface of MachineOperand as follows:Alkis Evlogimenos
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
2003-12-13Remove unecessary if statements when looping on ImplicitDefs.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10444 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-05Make assertion stricter. Since the source operands are allocated atAlkis Evlogimenos
this point, the second operand must be a physical register (it cannot be a virtual one). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10292 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-11Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-24standardize command line option namesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9496 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-20Added LLVM project notice to the top of every C++ source file.John Criswell
Header files will be on the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08Change MRegisterDesc::AliasSet, TargetInstrDescriptor::ImplicitDefsAlkis Evlogimenos
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
2003-08-23Fix bug: Jello/2003-08-23-RegisterAllocatePhysReg.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8095 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-17Fix bug: Jello/2003-08-15-AllocaAssertion.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7916 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-15Fix typo in commentBrian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7906 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-13Factory methods for FunctionPasses now return type FunctionPass *.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7823 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-05Fix bugs handling ESP in alloca referencesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7591 91177308-0d34-0410-b5e6-96231b3b80d8
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