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2004-02-23Refactor some code. In the mul - setcc folding case, we really care aboutChris Lattner
whether this is the sign bit or not, so check unsigned comparisons as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11740 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Handle the unsigned form as wellChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11739 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Improved PhysRegTracker interface. RegAlloc lazily allocates the register ↵Alkis Evlogimenos
tracker using a std::auto_ptr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11738 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Implement mul.ll:test11Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11737 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Add a slight variant of test10Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11736 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Implement "strength reduction" of X <= C and X >= CChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11735 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Implement InstCombine/mul.ll:test10, which is a case that occurs when dealingChris Lattner
with "predication" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11734 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23This multiply can be eliminatedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11733 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Simplify iterator usage now that we have next(). Also don't pass iterators ↵Alkis Evlogimenos
by reference now that MachineInstr* are in an ilist git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11732 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Update the 'new features' sectionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11731 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Bug fixedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11730 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Work around a gas bug. Print '-9223372036854775808' as unsigned.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11729 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Implement cast fp -> boolChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11728 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Add testcase for the casts that are missing in PR249Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11727 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Stop passing iterators around by reference now that we have ilists!Chris Lattner
Implement cast Type::ULongTy -> double git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11726 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Some code cleanups from ChrisAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11724 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Fix comments in PhysRegTracker and rename isPhysRegAvail to isRegAvail to be ↵Alkis Evlogimenos
consistent with the other two git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11723 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Add a new cmove instructionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11722 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Move LiveIntervals.h up to be the first included headerAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11721 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Pull PhysRegTracker out of RegAllocLinearScan as it can be used by other ↵Alkis Evlogimenos
allocators as well git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11720 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23Move LiveIntervals.h to lib/CodeGen since it shouldn't be exposed to other ↵Alkis Evlogimenos
parts of the compiler git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11719 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Only insert FP_REG_KILL instructions in MachineBasicBlocks that actuallyChris Lattner
use FP instructions. This reduces the number of instructions inserted in 176.gcc (for example) from 58074 to 101 (it doesn't use much FP, which is typical). This reduction speeds up the entire code generator. In the case of 176.gcc, llc went from taking 31.38s to 24.78s. The passes that sped up the most are the register allocator and the 2 live variable analysis passes, which sped up 2.3, 1.3, and 1.5s respectively. The asmprinter pass also sped up because it doesn't print the instructions in comments :) Note that this patch is likely to expose latent bugs in machine code passes, because now basicblock can be empty, where they were never empty before. I cleaned out regalloclocal, but who knows about linscan :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11717 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
2004-02-22Move MOTy::UseType enum into MachineOperand. This eliminates theAlkis Evlogimenos
switch statements in the constructors and simplifies the implementation of the getUseType() member function. You will have to specify defs using MachineOperand::Def instead of MOTy::Def though (similarly for Use and UseAndDef). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11715 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
2004-02-22Reduce the number of pointless copies inserted due to constant pointer refs.Chris Lattner
Also, make an assertion actually fireable! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11713 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Fix bug in previous checkout: leave the iterator at the first instructionChris Lattner
AFTER the GEP that was emitted. :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11712 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Fix silly bug in implementation of getUseType(). Thanks Misha.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11711 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Completely rewrite how getelementptr instructions are expanded. This has twoChris Lattner
(minor) benefits right now: 1. An extra dummy MOVrr32 is gone. This move would often be coallesced by both allocators anyway. 2. The code now uses the gep_type_iterator to walk the gep, which should future proof it a bit. It still assumes that array indexes are Longs though. These don't really justify rewriting the code. The big benefit will come later though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11710 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22When folding memory operands in machine instructions be careful toAlkis Evlogimenos
leave register operands with the same use/def flags as the original instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11709 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Significantly simplify gep_type_iterator, and make its interface more ↵Chris Lattner
general/powerful git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11708 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Fix a soon-to-be-missing #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11707 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Get all instruction definitionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11706 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Wow this is out of date. When we have _real_ code generator documentation,Chris Lattner
this should be folded into it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11705 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Print basic block boundaries in machine instruction debug output.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11704 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Link to most recent "LLVM document"Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11703 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Implement Transforms/InstCombine/cast.ll:test13, a case which occurs in aChris Lattner
hot 164.gzip loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11702 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Test that the instruction combiner can fold away a cast in a GEP instruction.Chris Lattner
This occurs in 164.gzip, as a result of it declaring arrays extern. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11701 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22The two address pass cannot handle two addr instructions where one incomingChris Lattner
value is a physreg and one is a virtreg. For this reason, disable copy folding entirely for physregs. Also, use the new isMoveInstr target hook which gives us folding of FP moves as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11700 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Abstract merging of ranges away from number of slots per instruction.Alkis Evlogimenos
Also make it less aggressive as the current implementation breaks in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11696 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22Use isNull instead of getNode() to test for existence of a node, this is ↵Chris Lattner
cheaper. FIX MAJOR BUG, whereby we didn't merge null edges correctly. Correcting this fixes poolallocation on 175.vpr, and possibly others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11695 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-21Fix an iterator invalidation problem which was causing some nodes to not beChris Lattner
correctly merged over! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11693 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-21Use handy methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11692 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-21Update comments and add warningChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11691 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-21`cat' is usually in /bin, not /usr/bin, at least on our systems.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11690 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-21When printing a stack trace, demangle it if possible. Since we are potentiallyChris Lattner
in a signal handler, allocating memory or doing other unsafe things is bad, which means we should do it in a different process. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11689 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
2004-02-21Instead of cloning the globals for main into the globals graph at the end ofChris Lattner
BU propagation, clone the globals into the GG of EACH FUNCTION that finishes processing! The GlobalsGraph *must* include all globals and effects from all functions in the program. Fixing this makes pool allocation work better on 175.vpr, but it still ultimately crashes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11686 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-20There is no need to merge the globals graph into the function graphs at theChris Lattner
end of the BU and CBU passes. The globals will be marked incomplete, so it doesn't matter if they are missing some info, and merging isn't guaranteed to bring everything in anyway! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11684 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-20Add two missing returns, which caused us to be very pessimistic about theChris Lattner
printf and scanf families! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11683 91177308-0d34-0410-b5e6-96231b3b80d8
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