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2012-09-13Fix a typo.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163801 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-13Stack Coloring: We have code that checks that all of the uses of allocasNadav Rotem
are within the lifetime zone. Sometime legitimate usages of allocas are hoisted outside of the lifetime zone. For example, GEPS may calculate the address of a member of an allocated struct. This commit makes sure that we only check (abort regions or assert) for instructions that read and write memory using stack frames directly. Notice that by allowing legitimate usages outside the lifetime zone we also stop checking for instructions which use derivatives of allocas. We will catch less bugs in user code and in the compiler itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163791 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Recommit, with fixes:Eric Christopher
Add some support for dealing with an object pointer on arguments. Part of rdar://9797999 which now supports adding the object pointer attribute to the subprogram as it should. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163754 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Fix PR11985Michael Liao
- BlockAddress has no support of BA + offset form and there is no way to propagate that offset into machine operand; - Add BA + offset support and a new interface 'getTargetBlockAddress' to simplify target block address forming; - All targets are modified to use new interface and X86 backend is enhanced to support BA + offset addressing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Remove an overly-aggressive assertion. The code following this assertion ↵Owen Anderson
already knows how to handle the case where DstRC was NULL, so it's not actually protecting us from anything, and this pattern can come up when using unknown_class operands in the SelectionDAG. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163736 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Delete dead code.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163735 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Revert "Add some support for dealing with an object pointer on arguments."Eric Christopher
This should be done on the subprogram, not the variable itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163734 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Fix a couple of Doxygen comment issues pointed out by -Wdocumentation.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163721 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Fix constant folding through bitcasts by no longer relying on undefined ↵Kristof Beyls
behaviour (converting NaN values between float and double). SelectionDAG::getConstantFP(double Val, EVT VT, bool isTarget); should not be used when Val is not a simple constant (as the comment in SelectionDAG.h indicates). This patch avoids using this function when folding an unknown constant through a bitcast, where it cannot be guaranteed that Val will be a simple constant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163703 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Add a flag to disable the code that looks for allocas which escaped the ↵Nadav Rotem
lifetime regions. This is useful for debugging. No testcase because without this check we fail on assertions when finding escaped allocas. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163702 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Add a function computeRegisterLiveness() to MachineBasicBlock. This uses ↵James Molloy
analyzePhysReg() from r163694 to heuristically try and determine the liveness state of a physical register upon arrival at a particular instruction in a block. The search for liveness is clipped to a specific number of instructions around the target MachineInstr, in order to avoid degenerating into an O(N^2) algorithm. It tries to use various clues about how instructions around (both before and after) a given MachineInstr use that register, to determine its state at the MachineInstr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163695 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Add an analyzePhysReg() function to MachineOperandIteratorBase that analyses ↵James Molloy
an instruction's use of a physical register, analogous to analyzeVirtReg. Rename RegInfo to VirtRegInfo so as not to be confused with the new PhysRegInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163694 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Enable stack-coloring, in hope that the recent fixes will enable correct ↵Nadav Rotem
dragonegg self-hosting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163687 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Make findLastUseBefore handle reg-unit liveness.Lang Hames
findLastUseBefore was previous considering virtreg liveness only, leading to incorrect live intervals for reg units when instrs with physreg operands were moved up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163685 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Stack coloring: remove lifetime intervals which contain escaped allocas.Nadav Rotem
The input program may contain intructions which are not inside lifetime markers. This can happen due to a bug in the compiler or due to a bug in user code (for example, returning a reference to a local variable). This commit adds checks that all of the instructions in the function and invalidates lifetime ranges which do not contain all of the instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163678 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Add some support for dealing with an object pointer on arguments.Eric Christopher
Part of rdar://9797999 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163667 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Release build: guard dump functions withManman Ren
"#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)" No functional change. Update r163339. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163653 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11[ms-inline asm] Split the parsing of IR asm strings into GCC and MS variants.Chad Rosier
Add support in the EmitMSInlineAsmStr() function for handling integer consts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163645 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Dragonegg selfhost exposed additional cases where alloca usage moved outside ↵Nadav Rotem
of lifetime markers. Disabling the pass for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163623 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Enable stack coloring.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163617 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Stack Coloring: Dont crash on dbg values which use stack frames.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163616 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Teach DAG combiner to constant fold FABS of a BUILD_VECTOR of ConstantFPs. ↵Craig Topper
Factor similar code out of FNEG DAG combiner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163587 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Reorganize MachineScheduler interfaces and publish them in the header.Andrew Trick
The Hexagon target decided to use a lot of functionality from the target-independent scheduler. That's fine, and other targets should be able to do the same. This reorg and API update makes that easy. For the record, ScheduleDAGMI was not meant to be subclassed. Instead, new scheduling algorithms should be able to implement MachineSchedStrategy and be done. But if need be, it's nice to be able to extend ScheduleDAGMI, so I also made that easier. The target scheduler is somewhat more apt to break that way though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163580 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Revert r160148 it seems to cause more problems than it shouldEric Christopher
right now. We'll fix PR13303 a different way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163570 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-1080-col fixup.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163569 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-1080-col fixup.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163568 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10No reason to construct this twice.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10[ms-inline asm] Properly emit the asm directives when the AsmPrinterVariantChad Rosier
and InlineAsmVariant don't match. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163550 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Remove redundant semicolons which are null statements.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163547 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Disable stack coloring because it makes dragonegg fail bootstrapping.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163545 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10[ms-inline asm] Pass the correct AsmVariant to the PrintAsmOperand() functionChad Rosier
and update the printOperand() function accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163544 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Enable stack coloring.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163539 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Stack Coloring: Handle the case where END markers come before BEGIN markers ↵Nadav Rotem
properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163530 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Fold multiply by 0 or 1 when in UnsafeFPMath mode in SelectionDAG::getNode().Michael Ilseman
This folding happens as early as possible for performance reasons, and to make sure it isn't foiled by other transforms (e.g. forming FMAs). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163519 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10whitespaceMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163518 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Fix an assertion failure when optimising a shufflevector incorrectly into ↵James Molloy
concat_vectors, and a followup bug with SelectionDAG::getNode() creating nodes with invalid types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163511 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Minor cleanup. No functional change.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163510 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Stack Coloring: Debug prints to print the slot number and not the array index.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163509 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Stack Coloring: When searching for disjoint regions, do not compare ↵Nadav Rotem
intervals twice or to theirself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163508 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Stack Coloring: Add support for multiple regions of the same slot, within a ↵Nadav Rotem
single basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163507 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Fix a typo in the comment.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163496 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Add an assertion that the frame index is indeed inside the declared lifetime ↵Nadav Rotem
region. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163495 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Teach the DAGBuilder about lifetime markers which are generated from PHINodes.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163494 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-09Teach DAG combiner to constant fold fneg of a BUILD_VECTOR of constants.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163483 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-09LiveVariables: Compute a set of defs and kills to speed up updating LV ↵Benjamin Kramer
during critical edge splitting. Previously we checked if the register is def'd in a block via the def/use list a nd walked the list of kills to check if the register is killed in a block. Both of these checks can be made much cheaper by walking the block first and recording all defs and kills. This reduces the compile time of the test case from PR13651 from 40s to 15s at -O2. The compile time is still dominated by LV updating but now the main culprit is SparseBitVector's slowness. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163478 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07Fix alignment of .comm and .lcomm on mingw32.Benjamin Kramer
For some reason .lcomm uses byte alignment and .comm log2 alignment so we can't use the same setting for both. Fix this by reintroducing the LCOMM enum. I verified this against mingw's gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163420 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07Fix indent.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163416 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07Update function names to conform to guidelines. No functional change intended.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163401 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07MC: Overhaul handling of .lcommBenjamin Kramer
- Darwin lied about not supporting .lcomm and turned it into zerofill in the asm parser. Push the zerofill-conversion down into macho-specific code. - This makes the tri-state LCOMMType enum superfluous, there are no targets without .lcomm. - Do proper error reporting when trying to use .lcomm with alignment on a target that doesn't support it. - .comm and .lcomm alignment was parsed in bytes on COFF, should be power of 2. - Fixes PR13755 (.lcomm crashes on ELF). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163395 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07Stop emitting lifetime region info when stack coloring is not enabled in O0Michael Liao
- this should fix PR13780 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163370 91177308-0d34-0410-b5e6-96231b3b80d8
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