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2010-05-17Boldly attempt consistent capitalization. Functional changes unintended.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103929 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Spill and kill all virtual registers across a call.Jakob Stoklund Olesen
Debug code doesn't use callee saved registers anyway, and the code is simpler this way. Now spillVirtReg always kills, and the isKill parameter is not needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103927 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Reduce hashtable probes by using DenseMap::insert() for lookup.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103926 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Make MBB a class member instead of passing it around everywhere.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Yes, if the redef is a copy, update the old val# with the copy. But make ↵Evan Cheng
sure to clear the copy field if the redef is not a copy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Fix uint64->{float, double} conversion to do rounding correctly in 32-bit.Dale Johannesen
The implementation in LegalizeIntegerTypes to handle this as sint64->float + appropriate power of 2 is subject to double rounding, considered incorrect by numerics people. Use this implementation only when it is safe. This leads to using library calls in some cases that produced inline code before, but it's correct now. (EVTToAPFloatSemantics belongs somewhere else, any suggestions?) Add a correctly rounding (though not particularly fast) conversion that uses X87 80-bit computations for x86-32. 7885399, 5901940. This shows up in gcc.c-torture/execute/ieee/rbug.c in the gcc testsuite on some platforms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103883 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Improve assertion messages.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103882 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15improve portability to systems that don't have powf/modf (e.g. solaris 9)Chris Lattner
patch by Evzen Muller! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Fix an GCC warning that seems to have actually caught a bug (!!!) inChandler Carruth
a condition's grouping. Every other use of Allocatable.test(Hint) groups it the same way as it is indented, so move the parentheses to agree with that grouping. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103869 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Calculate liveness on the fly for local registers.Jakob Stoklund Olesen
When working top-down in a basic block, substituting physregs for virtregs, the use-def chains are kept up to date. That means we can recognize a virtreg kill by the use-def chain becoming empty. This makes the fast allocator independent of incoming kill flags. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15A partial re-def instruction may be a copy.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103850 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Teach two-address pass to do some coalescing while eliminating REG_SEQUENCEEvan Cheng
instructions. e.g. %reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0 %reg1027<def> = EXTRACT_SUBREG %reg1026, 6 %reg1028<def> = EXTRACT_SUBREG %reg1026<kill>, 5 ... %reg1029<def> = REG_SEQUENCE %reg1028<kill>, 5, %reg1027<kill>, 6, %reg1028, 7, %reg1027, 8, %reg1028, 9, %reg1027, 10, %reg1030<kill>, 11, %reg1032<kill>, 12 After REG_SEQUENCE is eliminated, we are left with: %reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0 %reg1029:6<def> = EXTRACT_SUBREG %reg1026, 6 %reg1029:5<def> = EXTRACT_SUBREG %reg1026<kill>, 5 The regular coalescer will not be able to coalesce reg1026 and reg1029 because it doesn't know how to combine sub-register indices 5 and 6. Now 2-address pass will consult the target whether sub-registers 5 and 6 of reg1026 can be combined to into a larger sub-register (or combined to be reg1026 itself as is the case here). If it is possible, it will be able to replace references of reg1026 with reg1029 + the larger sub-register index. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Fast ISel trivially coalesces away no-op casts, so check for this whenDan Gohman
setting kill flags. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Don't bother spilling before a returnJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103831 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14RegAllocLocal can count copies tooJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103830 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Track allocatable instead of reserved regs, and never take an unallocatable ↵Jakob Stoklund Olesen
hint. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103828 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Don't set kill flags for instructions which the scheduler has cloned.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Avoid scanning the long tail of physreg operands on callsJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103823 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Do not forget to mark prcessed arguments.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103822 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Count coalesced copiesJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103821 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Allow virtreg redefines when verifying for RegAllocFastJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103820 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Remove trailing whitespaceJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103807 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-1480 column and trailing whitespace cleanupJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103806 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14add cmd line option to leave dbgvalues in during post-RA sceduling. UsefulJim Grosbach
while debugging what's mishandled about them in the post-RA pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103805 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe whatBill Wendling
the variable actually tracks. N.B., several back-ends are using "HasCalls" as being synonymous for something that adjusts the stack. This isn't 100% correct and should be looked into. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103802 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Add support to preserve type info for the variables that are removed by the ↵Devang Patel
optimizer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103798 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14When verifying two-address instructions, check the following:Jakob Stoklund Olesen
- Kill is implicit when use and def registers are identical. - Only virtual registers can differ. Add a -verify-fast-regalloc to run the verifier before the fast allocator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103797 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Simplify the handling of physreg defs and uses in RegAllocFast.Jakob Stoklund Olesen
This adds extra security against using clobbered physregs, and it adds kill markers to physreg uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103784 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14XFAIL the test I added with vg_leak, apparently it is the first and only llcDaniel Dunbar
-filetype=obj test, and -filetype=obj leaks a few objects. Added a FIXME, we need to sort out the ownership model for the various MC objects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103769 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Inline Asm: Ensure buffer is newline terminated to match how the text is ↵Daniel Dunbar
printed. - This is a hack, but I can't decide the best place to handle this. Chris? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103765 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Enable opportunistic coalescingJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103764 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Trust kill flags from isel and later passes.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103748 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Fix an embarrassing runtime regression for RegAllocFast.Jakob Stoklund Olesen
This loop is quadratic in the capacity for a DenseMap: while(!map.empty()) map.erase(map.begin()); Instead we now do a normal begin() - end() iteration followed by map.clear(). That also has the nice sideeffect of shrinking the map capacity on demand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103747 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13Implement a correct ui64->f32 conversion. The oldDale Johannesen
one was subject to double rounding in extreme cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103744 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13Clean up RegAllocFast debug outputJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103739 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13Teach MachineLICM and MachineSink how to clear kill flags conservativelyDan Gohman
when they move instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103737 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13Add a utility function for conservatively clearing kill flags, and makeDan Gohman
use of it in MachineCSE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13An Instruction has a trivial kill only if its use is in the sameDan Gohman
basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13Take allocation hints from copy instructions to/from physregs.Jakob Stoklund Olesen
This causes way more identity copies to be generated, ripe for coalescing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103686 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13More asserts around physreg usesJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103685 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13If REG_SEQUENCE source is livein, copy it first. Also, update livevariables ↵Evan Cheng
information when a copy is introduced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103680 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Do not attempt copy coalescing if the source and dest sub-register indices ↵Evan Cheng
do not match. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103679 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Make sure to add kill flags to the last use of a virtreg when it is redefined.Jakob Stoklund Olesen
The X86 floating point stack pass and others depend on good kill flags. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103635 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Remove unused variable. Tweak a comment while there.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103586 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12updated support for the COFF .linkonceNathan Jeffords
Now, the .linkonce directive is emitted as part of MCSectionCOFF::PrintSwitchToSection instead of AsmPrinter::EmitLinkage since it is an attribute of the section the symbol was placed into not the symbol itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103568 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Teach local regalloc about virtual registers with sub-indices.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103539 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Code clean up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103538 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Avoid scoping issues, fix buildbotsJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103530 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Add initial kill flag support to FastISel.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103529 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Make Clang happy.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103528 91177308-0d34-0410-b5e6-96231b3b80d8
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