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path: root/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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* When splitting a VAARG, remember its alignment.Rafael Espindola2010-06-261-3/+4
| | | | | | This produces terrible but correct code. llvm-svn: 106952
* Remove variables which are assigned to but for which the valueDuncan Sands2010-06-251-1/+0
| | | | | | is not used. Spotted by gcc-4.6. llvm-svn: 106854
* Eliminate the other half of the BRCOND optimization, and updateDan Gohman2010-06-241-7/+0
| | | | | | as many tests as possible. llvm-svn: 106749
* Eliminate the first have of the optimization which eliminates BRCONDDan Gohman2010-06-241-3/+1
| | | | | | | | | | | | | when the condition is constant. This optimization shouldn't be necessary, because codegen shouldn't be able to find dead control paths that the IR-level optimizer can't find. And it's undesirable, because it encourages bugpoint to leave "br i1 false" branches in its output. And it wasn't updating the CFG. I updated all the tests I could, but some tests are too reduced and I wasn't able to meaningfully preserve them. llvm-svn: 106748
* Reapply r106634, now that the bug it exposed is fixed.Dan Gohman2010-06-241-0/+8
| | | | llvm-svn: 106746
* Revert r106263, "Fold the ShrinkDemandedOps pass into the regular ↵Daniel Dunbar2010-06-231-8/+0
| | | | | | DAGCombiner pass,"... it was causing both 'file' (with clang) and 176.gcc (with llvm-gcc) to be miscompiled. llvm-svn: 106634
* Use A.append(...) instead of A.insert(A.end(), ...) when A is aDan Gohman2010-06-211-3/+3
| | | | | | SmallVector, and other SmallVector simplifications. llvm-svn: 106452
* Don't replace the old Ordering object with a new one; just clear()Dan Gohman2010-06-181-2/+1
| | | | | | the old one. llvm-svn: 106284
* Don't call clear() on DbgInfo when it's going to be deleted anyway.Dan Gohman2010-06-181-3/+0
| | | | | | | Don't replace the old DbgInfo with a new one when clear() on the old one is sufficient. llvm-svn: 106283
* Change UpdateNodeOperands' operand and return value from SDValue toDan Gohman2010-06-181-23/+19
| | | | | | SDNode *, since it doesn't care about the ResNo value. llvm-svn: 106282
* Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass,Dan Gohman2010-06-181-0/+8
| | | | | | which is faster, simpler, and less surprising. llvm-svn: 106263
* Handle ext(ext(x)) -> ext(x) immediately, since it's simple.Dan Gohman2010-06-181-1/+2
| | | | llvm-svn: 106256
* Fill in missing support for ISD::FEXP, ISD::FPOWI, and friends.Dan Gohman2010-06-011-2/+7
| | | | llvm-svn: 105283
* fix PR6623: when optimizing for size, don't inline memcpy/memsetsChris Lattner2010-05-311-0/+9
| | | | | | | | | that are too large. This causes the freebsd bootloader to be too large apparently. It's unclear if this should be an -Os or -Oz thing. Thoughts welcome. llvm-svn: 105228
* the 'limit' argument to FindOptimalMemOpLowering is unsigned, not uint64_t.Chris Lattner2010-05-311-6/+3
| | | | llvm-svn: 105226
* SelectionDAG shouldn't have a FunctionLoweringInfo member. RegsForValueDan Gohman2010-05-291-2/+1
| | | | | | | shouldn't have a TargetLoweringInfo member. And FunctionLoweringInfo::set doesn't needs its EnableFastISel argument. llvm-svn: 105101
* Adjust eh.sjlj.setjmp to properly have a chain and to have an opcode entry inJim Grosbach2010-05-261-0/+2
| | | | | | ISD::. No functional change. llvm-svn: 104734
* Improve assertion messages.Dale Johannesen2010-05-151-3/+8
| | | | llvm-svn: 103882
* Implement a bunch more TargetSelectionDAGInfo infrastructure.Dan Gohman2010-05-111-4/+6
| | | | | | | | Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and EmitTargetCodeForMemmove out of TargetLowering and into SelectionDAGInfo to exercise this. llvm-svn: 103481
* Add an assertion to catch attempts to access off the end of the array.Duncan Sands2010-05-101-0/+2
| | | | | | Based on a patch by Javier Martinez. llvm-svn: 103391
* Fix PR 7087, and probably other things, by extendingDale Johannesen2010-05-071-1/+11
| | | | | | | | | getConstantFP to accept the two supported long double target types. This was not the original intent, but there are other places that assume this works and it's easy enough to do. llvm-svn: 103299
* Print debug information for SDNodes.Dan Gohman2010-05-071-0/+16
| | | | llvm-svn: 103227
* EXTRACT_VECTOR_ELT of an INSERT_VECTOR_ELT may have the same index, but theBill Wendling2010-04-301-8/+13
| | | | | | | | indexes could be of a different value type. Or not even using the same SDNode for the constant (weird, I know). Compare the actual values instead of the pointers. llvm-svn: 102791
* Add DBG_VALUE handling for byval parameters; thisDale Johannesen2010-04-261-2/+2
| | | | | | | produces a comment on targets that support it, but the Dwarf writer is not hooked up yet. llvm-svn: 102372
* Add another variant of this test which found a place whereDan Gohman2010-04-211-1/+2
| | | | | | | CodeGen's ComputeMaskedBits was being over-conservative when computing bits for an ADD. llvm-svn: 101963
* Give SelectionDAG a TargetMachine too, rather than having itDan Gohman2010-04-191-6/+2
| | | | | | fetch one from the MachineFunction. llvm-svn: 101807
* Delete now-unnecessary const_casts.Dan Gohman2010-04-171-1/+1
| | | | llvm-svn: 101637
* Use const qualifiers with TargetLowering. This eliminates severalDan Gohman2010-04-171-1/+1
| | | | | | | | | | | | | const_casts, and it reinforces the design of the Target classes being immutable. SelectionDAGISel::IsLegalToFold is now a static member function, because PIC16 uses it in an unconventional way. There is more room for API cleanup here. And PIC16's AsmPrinter no longer uses TargetLowering. llvm-svn: 101635
* Commit this, which should have accompanied 101531.Dan Gohman2010-04-161-1/+2
| | | | llvm-svn: 101532
* Add const qualifiers to CodeGen's use of LLVM IR constructs.Dan Gohman2010-04-151-9/+9
| | | | llvm-svn: 101334
* Remove unnecessary parens.Dan Gohman2010-04-121-2/+2
| | | | llvm-svn: 101010
* Avoid using f64 to lower memcpy from constant string. It's cheaper to use ↵Evan Cheng2010-04-081-8/+12
| | | | | | i32 store of immediates. llvm-svn: 100751
* Three changes:Chris Lattner2010-04-071-0/+23
| | | | | | | | | | | | | | | 1. Introduce some enums and accessors in the InlineAsm class that eliminate a ton of magic numbers when handling inline asm SDNode. 2. Add a new MDNodeSDNode selection dag node type that holds a MDNode (shocking!) 3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc metadata, propagating it to the instruction emitter, which drops it. No functionality change. llvm-svn: 100605
* Remove assert to treat memmove and memset like memcpyMon P Wang2010-04-061-3/+4
| | | | llvm-svn: 100521
* Fix an obvious copy-n-paste bug. It's not known to cause any miscompilation.Evan Cheng2010-04-051-4/+2
| | | | llvm-svn: 100494
* Add a comment.Dan Gohman2010-04-051-0/+6
| | | | llvm-svn: 100459
* lowering a volatile llvm.memcpy to a libc memcpy is ok.Chris Lattner2010-04-051-1/+0
| | | | | | PR6779 llvm-svn: 100457
* remove the now-redundant MMI pointer in SelectionDAG.Chris Lattner2010-04-051-2/+1
| | | | llvm-svn: 100419
* remove some redundant MMI arguments.Chris Lattner2010-04-051-4/+3
| | | | llvm-svn: 100417
* selection dag doesn't need DwarfWriter, remove some tendrils.Chris Lattner2010-04-051-4/+2
| | | | llvm-svn: 100382
* Reapply address space patch after fixing an issue in MemCopyOptimizer.Mon P Wang2010-04-041-23/+29
| | | | | | | Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) llvm-svn: 100304
* stop using DebugLoc::getUnknownLoc()Chris Lattner2010-04-021-8/+4
| | | | llvm-svn: 100215
* Correctly lower memset / memcpy of undef. It should be a nop. PR6767.Evan Cheng2010-04-021-11/+23
| | | | llvm-svn: 100208
* Revert r100191 since it breaks objc in clang Mon P Wang2010-04-021-26/+21
| | | | llvm-svn: 100199
* Reapply address space patch after fixing an issue in MemCopyOptimizer.Mon P Wang2010-04-021-21/+26
| | | | | | | Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) llvm-svn: 100191
* Skip checking preferred alignment of GVs defined in other translation units ↵Evan Cheng2010-04-011-1/+1
| | | | | | all together. llvm-svn: 100133
* - Avoid using floating point stores to implement memset unless the value is ↵Evan Cheng2010-04-011-10/+14
| | | | | | | | zero. - Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type. llvm-svn: 100118
* Fix sdisel memcpy, memset, memmove lowering:Evan Cheng2010-04-011-85/+133
| | | | | | | | | | | | | 1. Makes it possible to lower with floating point loads and stores. 2. Avoid unaligned loads / stores unless it's fast. 3. Fix some memcpy lowering logic bug related to when to optimize a load from constant string into a constant. 4. Adjust x86 memcpy lowering threshold to make it more sane. 5. Fix x86 target hook so it uses vector and floating point memory ops more effectively. rdar://7774704 llvm-svn: 100090
* Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots.Bob Wilson2010-03-301-27/+22
| | | | llvm-svn: 99948
* Added support for address spaces and added a isVolatile field to memcpy, ↵Mon P Wang2010-03-301-22/+27
| | | | | | | | | memmove, and memset, e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) A update of langref will occur in a subsequent checkin. llvm-svn: 99928
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