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2010-07-22Initialize RegLimit only when register pressure is being tracked.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21More register pressure aware scheduling work.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109064 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21For ARM/Darwin, add a dwarf entry indicating whether a function is arm or thumbJim Grosbach
rdar://8202967 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109057 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Fix batch of converting RegisterPass<> to INTIALIZE_PASS().Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-2180 column and trailing whitespace cleanupJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Disallow null as a named metadata operand.Dan Gohman
Make MDNode::destroy private. Fix the one thing that used MDNode::destroy, outside of MDNode itself. One should never delete or destroy an MDNode explicitly. MDNodes implicitly go away when there are no references to them (implementation details aside). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109028 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Changed OStream templates to functions on raw_ostream, removed the unused ↵Lang Hames
"renderWarnings" function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109003 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Teach bottom up pre-ra scheduler to track register pressure. Work in progress.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108991 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Change the createSpiller interface to take a MachineFunctionPass argument.Jakob Stoklund Olesen
The spillers can pluck the analyses they need from the pass reference. Switch some never-null pointers to references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108969 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Implement loop splitting analysis.Jakob Stoklund Olesen
Determine which loop exit blocks need a 'pre-exit' block inserted. Recognize when this would be impossible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108941 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Fix test for switch statements and increaseDale Johannesen
threshold a bit per experimentation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108935 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Appease the colonials.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Beginning SplitKit - utility classes for live range splitting.Jakob Stoklund Olesen
This is a work in progress. So far we have some basic loop analysis to help determine where it is useful to split a live range around a loop. The actual loop splitting code from Splitter.cpp is also going to move in here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108842 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Updated css classes for the pressure table legend.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Oops - I tables render poorly in Chrome without this explicit height ↵Lang Hames
specification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108824 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Use run-length encoding to represent identical adjacent cells in the pressureLang Hames
and interval table. Reduces output HTML file sizes by ~80% in my test cases. Also fix access of private member type by << operator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108823 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Added support for turning HTML indentation on and off (indentation off by ↵Lang Hames
default). Reduces output file size ~20% on my test cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108822 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Switched to rendering after allocation (but before rewriting) in PBQP.Lang Hames
Updated renderer to use allocation information from VirtRegMap (if available) to render spilled intervals differently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108815 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Don't hoist things out of a large switch inside aDale Johannesen
loop, for the reasons in the comments. This is a major win on 253.perlbmk on ARM Darwin. I expect it to be a good heuristic in general, but it's possible some things will regress; I'll be watching. 7940152. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108792 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Correct line info for declarations/definitions. Radar 8063111.Stuart Hastings
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108784 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Fix memory leak reported by valgrind. Devang Patel
Do not visit operands of old instruction. Visit all operands of new instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108767 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19After a custom inserter, in a block which has constant instructions,Dan Gohman
update the current basic block in addition to the current insert position, so that they remain consistent. This fixes rdar://8204072. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108765 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19ARM has to provide its own TargetLowering::findRepresentativeClass because ↵Evan Cheng
its scalar floating point registers alias its vector registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108761 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Teach computeRegisterProperties() to compute "representative" register class ↵Evan Cheng
for legal value types. A "representative" register class is the largest legal super-reg register class for a value type. e.g. On i386, GR32 is the rep register class for i8 / i16 / i32; on x86_64 it would be GR64. This property will be used by the register pressure tracking instruction scheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108735 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Spillers may alter MachineLoopInfo when breaking critical edges, so make itJakob Stoklund Olesen
non-const. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108734 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Fix PR 7662.Devang Patel
Do not try to insert local variable info to a DIE used for function declaration. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108731 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Update CMake build.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108700 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Render MachineFunctions to HTML pages, with options to render registerLang Hames
pressure estimates and liveness alongside. Still experimental. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108698 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Remove r108639 now that it is handled by InstCombine instead.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108688 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Target: Give the TargetAsmParser access to the TargetMachine.Daniel Dunbar
- Unfortunate, but necessary for now to handle subtarget instruction matching. Eventually we should factor out the lower level target machine information so we don't need to do this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108664 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-18MC: Move several clients to using AsmParser constructor function.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108645 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-18Fix struct/class mismatchDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108642 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-18Add a DAGCombine xform to fold away redundant float->double->float ↵Owen Anderson
conversions around sqrt instructions. I am assured by people more knowledgeable than me that there are no rounding issues in eliminating this. This fixed <rdar://problem/8197504>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108639 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-18Added -pbqp-pre-coalescing flag to PBQP. If enabled this will cause PBQP to ↵Lang Hames
require LoopSplitter be run prior to register allocation. Entirely for testing purposes at the moment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17Use isPrologLabel() instead of checking the opcode directly.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108628 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17update CMakeLists.txtZhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108620 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17Removed unused inRange variable.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108618 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17LoopSplitter - intended to split live intervals over loop boundaries.Lang Hames
Still very much under development. Comments and fixes will be forthcoming. (This commit includes some small tweaks to LiveIntervals & LoopInfo to support the splitter) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108615 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17Iterating over sets of pointers in a heuristic was a bad idea. SwitchingLang Hames
any command line paramater changed the register allocation produced by PBQP. Turns out variety is not the spice of life. Fixed some comparators, added others. All good now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17Propagate alloca alignment information via variable size object frameEric Christopher
information. No functional change yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108583 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Consider this function:Bill Wendling
void foo() { __builtin_unreachable(); } It will output the following on Darwin X86: _func1: Leh_func_begin0: pushq %rbp Ltmp0: movq %rsp, %rbp Ltmp1: Leh_func_end0: This prolog adds a new Call Frame Information (CFI) row to the FDE with an address that is not within the address range of the code it describes -- part is equal to the end of the function -- and therefore results in an invalid EH frame. If we emit a nop in this situation, then the CFI row is now within the address range. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108568 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Rename DBG_LABEL PROLOG_LABEL, because it's only used during prolog emission andBill Wendling
thus is a much more meaningful name. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108563 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Remove remaining calls to TII::isMoveInstr.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108556 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Revert r108369, sorting llvm.dbg.declare information by source position,Dan Gohman
since it doesn't work for front-ends which don't emit column information (which includes llvm-gcc in its present configuration), and doesn't work for clang for K&R style variables where the variables are declared in a different order from the parameter list. Instead, make a separate pass through the instructions to collect the llvm.dbg.declare instructions in order. This ensures that the debug information for variables is emitted in this order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108538 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Get rid of a bunch of duplicated ELF enum values.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108520 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Remove many calls to TII::isMoveInstr. Targets should be producing COPY anyway.Jakob Stoklund Olesen
TII::isMoveInstr is going tobe completely removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Use the source-order scheduler instead of the "fast" scheduler at -O0,Dan Gohman
because it's more likely to keep debug line information in its original order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108496 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16The SelectionDAGBuilder's handling of debug info, on rareDale Johannesen
occasions, caused code to be generated in a different order. All cases I've seen involved float softening in the type legalizer, and this could be perhaps be fixed there, but it's better not to generate things differently in the first place. 7797940 (6/29/2010..7/15/2010). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108484 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Revert. This isn't the correct way to go.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108478 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Handle code gen for the unreachable instruction if it's the only instruction inBill Wendling
the function. We'll just turn it into a "trap" instruction instead. The problem with not handling this is that it might generate a prologue without the equivalent epilogue to go with it: $ cat t.ll define void @foo() { entry: unreachable } $ llc -o - t.ll -relocation-model=pic -disable-fp-elim -unwind-tables .section __TEXT,__text,regular,pure_instructions .globl _foo .align 4, 0x90 _foo: ## @foo Leh_func_begin0: ## BB#0: ## %entry pushq %rbp Ltmp0: movq %rsp, %rbp Ltmp1: Leh_func_end0: ... The unwind tables then have bad data in them causing all sorts of problems. Fixes <rdar://problem/8096481>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108473 91177308-0d34-0410-b5e6-96231b3b80d8
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