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2008-09-17Unallocatable registers do not have live intervals.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56287 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Do not hoist instruction above branch condition. The instruction may use ↵Devang Patel
branch condition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56286 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Do not ignore iv uses outside the loop.Devang Patel
This one slipped through cracks very well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56284 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Fix comments, help messages.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56282 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Don't worry about clobbering physical register defs that aren't used.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56281 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Fix addrmode1 instruction encodings; fix bx_ret encoding.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Specify instruction encoding using range list to avoid endianess issues.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56276 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Add instruction names as comments to InstBits entries.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56275 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Simplify and generalize X86DAGToDAGISel::CanBeFoldedBy, and drawDan Gohman
up some new ascii art to illustrate what it does. This change currently has no effect on generated code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56270 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Add a new MachineInstr-level DCE pass. It is very simple, and is intended toDan Gohman
be used with fast-isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56268 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Add trampoline support to PPC. GCC simply calls the "__trampoline_setup"Bill Wendling
function with appropriate parameters. This allows us to support blocks on PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56267 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17Fix cut-n-pasto.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56265 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16When converting a CopyFromReg to a copy instruction, use the register class ↵Evan Cheng
of its uses to determine the right destination register class of the copy. This is important for targets where a physical register may belong to multiple register classes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56258 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Remove.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56256 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Add -O1, -O2 and -O3 that matches llvm-gcc's -O1, -O2 and -O3 respectively.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56255 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Change SelectionDAG::getConstantPool to always set the alignment of theDan Gohman
ConstantPoolSDNode, using the target's preferred alignment for the constant type. In LegalizeDAG, when performing loads from the constant pool, the ConstantPoolSDNode's alignment is used in the calls to getLoad and getExtLoad. This change prevents SelectionDAG::getLoad/getExtLoad from incorrectly choosing the ABI alignment for constant pool loads when Alignment == 0. The incorrect alignment is only a performance issue when ABI alignment does not equal preferred alignment (i.e., on x86 it was generating MOVUPS instead of MOVAPS for v4f32 constant loads when the default ABI alignment for 128bit vectors is forced to 1 byte.) Patch by Paul Redmond! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56253 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Reverting r56249. On further investigation, this functionality isn't needed.Bill Wendling
Apologies for the thrashing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56251 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Include the alignment value when displaying ConstantPoolSDNodes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56250 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16- Change "ExternalSymbolSDNode" to "SymbolSDNode".Bill Wendling
- Add linkage to SymbolSDNode (default to external). - Change ISD::ExternalSymbol to ISD::Symbol. - Change ISD::TargetExternalSymbol to ISD::TargetSymbol These changes pave the way to allowing SymbolSDNodes with non-external linkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56249 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Fix these comments to reflect current reality. Surprisingly,Dan Gohman
MachineConstantPool::getConstantPoolIndex actually expects a log2-encoded alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56248 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Finally re-apply r46959. This is made feasible by the combinationDan Gohman
of r56230, r56232, and r56246. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56247 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Improve instcombine's handling of integer min and max in two ways:Dan Gohman
- Recognize expressions like "x > -1 ? x : 0" as min/max and turn them into expressions like "x < 0 ? 0 : x", which is easily recognizable as a min/max operation. - Refrain from folding expression like "y/2 < 1" to "y < 2" when the comparison is being used as part of a min or max idiom, like "y/2 < 1 ? 1 : y/2". In that case, the division has another use, so folding doesn't eliminate it, and obfuscates the min/max, making it harder to recognize as a min/max operation. These benefit ScalarEvolution, CodeGen, and anything else that wants to recognize integer min and max. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56246 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16AllocateRWXMemory -> AllocateRWX.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56244 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16FCmpInst predicates UNO, ORD, FALSE, and TRUE are commutative.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56243 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Fix test to account for no more whitespace and that one of the matches is theBill Wendling
"declare" statement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56241 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Remove space that was forgotten.`Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56240 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Don't take the time to CheckDAGForTailCallsAndFixThem when tail callsDan Gohman
are not enabled. Instead just omit the tail call flag when calls are created. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56235 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Fix spacing in the grep line for this test, following the recentDan Gohman
SCEV-whitespace changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56234 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16Re-enables the new vector select in the bitcode reader, by modifying theDan Gohman
bitcode reader/writer as follows: - add and use new bitcode FUNC_CODE_INST_VSELECT to handle the llvm select opcode using either i1 or [N x i1] as the selector. - retain old BITCODE FUNC_CODE_INST_SELECT in the bitcode reader to handle select on i1 for backwards compatibility with existing bitcode files. - re-enable the vector-select.ll test program. Also, rename the recently added bitcode opcode FUNC_CODE_INST_VCMP to FUNC_CODE_INST_CMP2 and make the bitcode writer use it to handle fcmp/icmp on scalars or vectors. In the bitcode writer, use FUNC_CODE_INST_CMP for vfcmp/vicmp only. In the bitcode reader, have FUNC_CODE_INST_CMP handle icmp/fcmp returning bool, for backwards compatibility with existing bitcode files. Patch by Preston Gurd! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56233 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Teach ScalarEvolution to consider loop preheaders in the search forDan Gohman
an if statement that guards a loop, to allow indvars to avoid smax operations in more situations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56232 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Live intervals for live-in registers should begin at the beginning of a ↵Owen Anderson
basic block, not at the first instruction. Also, their valno's should have an unknown def. This has no effect currently, but was causing issues when StrongPHIElimination was enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56231 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Teach LSR to optimize away SMAX operations for tripcounts in commonDan Gohman
cases. See the comment above OptimizeSMax for the full story, and the testcase for an example. This cancels out a pessimization commonly attributed to indvars, and will allow us to lift some of the artificial throttles in indvars, rather than add new ones. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56230 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Extract optimization pass selection code from llvm-gcc into a separate routine.Devang Patel
This can be used by other stand alone tools, such as 'opt'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56229 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Fixed Bug 2751Bruno Cardoso Lopes
http://llvm.org/bugs/show_bug.cgi?id=2751 Abicall was enabled even when static code model was provided in the command line. The correct behavior is to disable abicall when static is specified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56228 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Re-enable SelectionDAG CSE for calls. It matters in the case ofDan Gohman
libcalls, as in this testcase on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56226 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Added testcase for bswap allegrexel intrinsicBruno Cardoso Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56225 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15End of the GlobalsModRef experiment.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56222 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Update the LLVM polygen grammar for recent language changes:Dan Gohman
x86_ssecallcc, function notes, and some whitespace adjustments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56221 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Fix documentation for these functions; they do not only modify users within theNick Lewycky
block specified by the InstList. Patch by Stefanus Du Toit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56200 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Correctly update kill infos after extending a live range and merge 2 val#'s; ↵Evan Cheng
fix 56165 - do not mark val# copy field if the copy does not define the val#. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56199 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-15Add "sample" documentation to sample project.Nick Lewycky
This fixes part of PR2793. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56198 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-14Fix WriteAsOperand to not emit a leading space character. AdjustDan Gohman
its callers to emit a space character before calling it when a space is needed. This fixes several spurious whitespace issues in ScalarEvolution's debug dumps. See the test changes for examples. This also fixes odd space-after-tab indentation in the output for switch statements, and changes calls from being printed like this: call void @foo( i32 %x ) to this: call void @foo(i32 %x) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56196 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-14adjust last patch per review feedbackDale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56194 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13minor correctionGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56190 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Remove isImm(), isReg(), and friends, in favor of Dan Gohman
isImmediate(), isRegister(), and friends, to avoid confusion about having two different names with the same meaning. I'm not attached to the longer names, and would be ok with changing to the shorter names if others prefer it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56189 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Fix PR2792: treat volatile loads as writing memory somewhere.Duncan Sands
Treat stores as reading memory, just to play safe. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56188 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Fix random abort.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56184 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Define CallSDNode, an SDNode subclass for use with ISD::CALL.Dan Gohman
Currently it just holds the calling convention and flags for isVarArgs and isTailCall. And it has several utility methods, which eliminate magic 5+2*i and similar index computations in several places. CallSDNodes are not CSE'd. Teach UpdateNodeOperands to handle nodes that are not CSE'd gracefully. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56183 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Typo.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56182 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Rely on instruction format to determine so_reg operand for now.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56181 91177308-0d34-0410-b5e6-96231b3b80d8
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