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2009-02-22Introduce the BuildVectorSDNode class that encapsulates the ISD::BUILD_VECTORScott Michel
instruction. The class also consolidates the code for detecting constant splats that's shared across PowerPC and the CellSPU backends (and might be useful for other backends.) Also introduces SelectionDAG::getBUID_VECTOR() for generating new BUILD_VECTOR nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65296 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-22If a use operand is marked isKill, don't forget to add kill to its live ↵Evan Cheng
interval as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65279 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-21bug 3610: Floating point vaarg not softened.Richard Pennington
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65239 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-21Drop bunch of half-working stuff in the ext_weak linkage support.Anton Korobeynikov
Now we're using one gross, but quite robust hack :) (previous ones did not work, for example, when ext_weak symbol was used deep inside constant expression in the initializer). The proper fix of this problem will require some quite huge asmprinter changes and that's why was postponed. This fixes PR3629 by the way :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65230 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-21If two-address def is dead and the instruction does not define other ↵Evan Cheng
registers, and it doesn't produce side effects, just delete the instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65218 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Fix a bug that David Greene found in the DAGCombiner's logicDan Gohman
that checks whether it's safe to transform a store of a bitcast value into a store of the original value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65201 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20- Early exit a nested block.Bill Wendling
- Correct comment. - Whitespace changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65149 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Fix a crash in the pre-alloc splitter exposed by recent codegen changes.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65121 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Add a quick pass to the stack slot colorer to eliminate some trivially ↵Owen Anderson
redundant spills after coloring. Ideally these would never get created in the first place, but until we enhance the spiller to have a more global picture of what's happening, this is necessary for code quality in some circumstances. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65120 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Add an accessor method to DwarfWriter to tell of debugging info should be ↵Bill Wendling
emitted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19Temporarily revert r65065. It was causing test failures.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19Print out debug info when printing the machine instruction.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65067 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19Check for -fast here too.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65065 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19Generate these labels when we're in "fast" mode, not simply when we're no inBill Wendling
"optimize-for-size" mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65064 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18The subprogram die may not exist while creating "default" scope.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64920 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Add support to the JIT for true non-lazy operation. When a call to a functionNate Begeman
that has not been JIT'd yet, the callee is put on a list of pending functions to JIT. The call is directed through a stub, which is updated with the address of the function after it has been JIT'd. A new interface for allocating and updating empty stubs is provided. Add support for removing the ModuleProvider the JIT was created with, which would otherwise invalidate the JIT's PassManager, which is initialized with the ModuleProvider's Module. Add support under a new ExecutionEngine flag for emitting the infomration necessary to update Function and GlobalVariable stubs after JITing them, by recording the address of the stub and the name of the GlobalValue. This allows code to be copied from one address space to another, where libraries may live at different virtual addresses, and have the stubs updated with their new correct target addresses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64906 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Eliminate several more unnecessary intptr_t casts.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64888 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17The debugger sometimes lookup dynamically in the runtime to find ivar info ↵Devang Patel
of any Objective-C classes. It would be very helpful to debugger if the compiler encodes runtime version number in DWARF. Add support for two additional DWARF attributes to encode Objective-C runtime version number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64834 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Remove trailing whitespace to reduce later commit patch noise.Scott Michel
(Note: Eventually, commits like this will be handled via a pre-commit hook that does this automagically, as well as expand tabs to spaces and look for 80-col violations.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64827 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Emit debug info for bitfields.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64815 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17A couple of places where reused use operands should be marked kill. This is ↵Evan Cheng
exposed by recent availability fallthrough changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17--- Merging (from foreign repository) r64714 into '.':Bill Wendling
U include/llvm/CodeGen/DebugLoc.h U lib/CodeGen/SelectionDAG/LegalizeDAG.cpp U lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp U lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp Enable debug location generation at -Os. This goes with the reapplication of the r63639 patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64715 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15Don't assume that a left-shift of a value with one bit set will haveDan Gohman
one bit set, because the bit may be shifted off the end. Instead, just check for a constant 1 being shifted. This is still sufficient to handle all the cases in test/CodeGen/X86/bt.ll. This fixes PR3583. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64622 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15Fix PR3522. It's not safe to sink into landing pad BB's.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64582 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Unbreak the build on win32.Cedric Venet
Cleanup some warning. Remark: when struct/class are declared differently than they are defined, this make problem for VC++ since it seems to mangle class differently that struct. These error are very hard to understand and find. So please, try to keep your definition/declaration in sync. Only tested with VS2008. hope it does not break anything. feel free to revert. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64554 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Revert this. It was breaking stuff.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Turn off the old way of handling debug information in the code generator. UseBill Wendling
the new way, where all of the information is passed on SDNodes and machine instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64427 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Arrange to print constants that match "n" and "i" constraintsDale Johannesen
in inline asm as signed (what gcc does). Add partial support for x86-specific "e" and "Z" constraints, with appropriate signedness for printing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64400 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Adjust the sizes for a few SmallVectors to reflect their usage.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64381 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12make fast isel fall back to selectiondags for VLA llvm.declare intrinsics.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12It's (currently) not safe to keep certain physical registers live across ↵Evan Cheng
basic blocks, e.g. x86 fp stack registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64374 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Oops. Last second clean up messed things up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64373 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12If availability info is kept when fallthrough into a bb, add the available ↵Evan Cheng
registers to live-in set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64372 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Replace one of burr scheduling heuristic with something more sensible. Now ↵Evan Cheng
calcMaxScratches simply compute the number of true data dependencies. This actually improve a couple of tests in dejagnu suite as many tests in llvm nightly test suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64369 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Apparently some MachineBasicBlock's don't have corresponding llvm basic blocks.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64340 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Remove a bogus assertion. It's possible a live-in available value is used by ↵Evan Cheng
a previous instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64339 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Fix a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64328 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Don't use special heuristics for nodes with no data predecessorsDan Gohman
unless they actually have data successors, and likewise for nodes with no data successors unless they actually have data precessors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64327 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Delete the heuristic for non-livein CopyFromReg nodes. Non-liveinnessDan Gohman
is determined by whether the node has a Flag operand. However, if the node does have a Flag operand, it will be glued to its register's def, so the heuristic would end up spuriously applying to whatever node is the def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64319 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Make a transformation added in 63266 a bit less aggressive.Dale Johannesen
It was transforming (x&y)==y to (x&y)!=0 in the case where y is variable and known to have at most one bit set (e.g. z&1). This is not correct; the expressions are not equivalent when y==0. I believe this patch salvages what can be salvaged, including all the cases in bt.ll. Dan, please review. Fixes gcc.c-torture/execute/20040709-[12].c git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64314 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Implement PR3495: local spiller optimization. The local spiller can now keep ↵Evan Cheng
availability information over BB boundaries. It visits BB's in depth first order. After visiting a BB if it find a successor which has a single predecessor it visits the successor next without clearing the availability information. This allows the successor to omit reloads or change them into copies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64298 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11When scheduling a block in parts, keep track of the overallDan Gohman
instruction index across each part. Instruction indices are used to make live range queries, and live ranges can extend beyond scheduling region boundaries. Refactor the ScheduleDAGSDNodes class some more so that it doesn't have to worry about this additional information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64288 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Use iterators to iterate through the Preds array instead ofDan Gohman
an index. This code is on the hot-path because the current way SDep edges are uniqued has quadratic complexity. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64262 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Consider any instruction that modifies the stack pointer to beDan Gohman
a scheduling region boundary. This isn't necessary for correctness; it helps with compile time, as it avoids the need for data- and anti-dependencies from all spills and reloads on the stack-pointer modification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64255 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Factor out more code for computing register live-range informationforDan Gohman
scheduling, and generalize is so that preserves state across scheduling regions. This fixes incorrect live-range information around terminators and labels, which are effective region boundaries. In place of looking for terminators to anchor inter-block dependencies, introduce special entry and exit scheduling units for this purpose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64254 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Fix PR3457: Ignore control successors when looking for closest scheduled ↵Evan Cheng
successor. A control successor doesn't read result(s) produced by the scheduling unit being evaluated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64210 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Validate file id.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64204 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09If the target cannot issue a copy for the given source and dest registers, ↵Evan Cheng
abort instead of silently continue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64184 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Simplify code.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64164 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Make sure constant subscript is truncated to ptr size if it may not fit.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64163 91177308-0d34-0410-b5e6-96231b3b80d8
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