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path: root/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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* Don't emit a bit test if there is only one case the test can yield false. A ↵Benjamin Kramer2011-07-141-1/+9
| | | | | | simple SETNE is sufficient. llvm-svn: 135126
* Convert InsertValueInst and ExtractValueInst APIs to use ArrayRef.Jay Foad2011-07-131-2/+2
| | | | llvm-svn: 135040
* Add an intrinsic and codegen support for fused multiply-accumulate. The intentCameron Zwarich2011-07-081-0/+7
| | | | | | is to use this for architectures that have a native FMA instruction. llvm-svn: 134742
* Apparently we can't expect a BinaryOperator here.Benjamin Kramer2011-07-081-2/+2
| | | | | | Should fix llvm-gcc selfhost. llvm-svn: 134699
* Emit a more efficient magic number multiplication for exact sdivs.Benjamin Kramer2011-07-081-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | We have to do this in DAGBuilder instead of DAGCombiner, because the exact bit is lost after building. struct foo { char x[24]; }; long bar(struct foo *a, struct foo *b) { return a-b; } is now compiled into movl 4(%esp), %eax subl 8(%esp), %eax sarl $3, %eax imull $-1431655765, %eax, %eax instead of movl 4(%esp), %eax subl 8(%esp), %eax movl $715827883, %ecx imull %ecx movl %edx, %eax shrl $31, %eax sarl $2, %edx addl %eax, %edx movl %edx, %eax llvm-svn: 134695
* Introduce "expect" intrinsic instructions.Jakub Staszak2011-07-061-0/+7
| | | | llvm-svn: 134516
* Remove getRegClassForInlineAsmConstraint and all dependencies.Eric Christopher2011-06-301-101/+0
| | | | | | Fixes rdar://9643582 llvm-svn: 134123
* Distinguish early clobber output operands from clobbered registers.Jakob Stoklund Olesen2011-06-271-2/+1
| | | | | | | | | | | | | | | | | | | | | | Both become <earlyclobber> defs on the INLINEASM MachineInstr, but we now use two different asm operand kinds. The new Kind_Clobber is treated identically to the old Kind_RegDefEarlyClobber for now, but x87 floating point stack inline assembly does care about the difference. This will pop a register off the stack: asm("fstp %st" : : "t"(x) : "st"); While this will pop the input and push an output: asm("fst %st" : "=&t"(r) : "t"(x)); We need to know if ST0 was a clobber or an output operand, and we can't depend on <dead> flags for that. llvm-svn: 133902
* When promoting the vector elements in CopyToParts, use vector truncNadav Rotem2011-06-191-11/+3
| | | | | | instead of scalarizing, and doing an element-by-element truncat. llvm-svn: 133382
* Introduce MachineBranchProbabilityInfo class, which has similar API toJakub Staszak2011-06-161-11/+32
| | | | | | | | BranchProbabilityInfo (expect setEdgeWeight which is not available here). Branch Weights are kept in MachineBasicBlocks. To turn off this analysis set -use-mbpi=false. llvm-svn: 133184
* Add TargetRegisterInfo::getRawAllocationOrder().Jakob Stoklund Olesen2011-06-161-9/+16
| | | | | | | | | | | | | This virtual function will replace allocation_order_begin/end as the one to override when implementing custom allocation orders. It is simpler to have one function return an ArrayRef than having two virtual functions computing different ends of the same array. Use getRawAllocationOrder() in place of allocation_order_begin() where it makes sense, but leave some clients that look like they really want the filtered allocation orders from RegisterClassInfo. llvm-svn: 133170
* Add one more argument to the prefetch intrinsic to indicate whether it's a dataBruno Cardoso Lopes2011-06-141-2/+3
| | | | | | | or instruction cache access. Update the targets to match it and also teach autoupgrade. llvm-svn: 132976
* Improve the generated code by getCopyFromPartsVector for promoted integer types.Nadav Rotem2011-06-121-21/+20
| | | | | | | | | Instead of scalarizing, and doing an element-by-element truncat, use vector truncate. Add support for scalarization of vectors: i8 -> <1 x i1> (from Duncan's testcase). llvm-svn: 132892
* Add a parameter to CCState so that it can access the MachineFunction.Eric Christopher2011-06-081-3/+5
| | | | | | | | No functional change. Part of PR6965 llvm-svn: 132763
* TypeLegalizer: Add support for passing of vector-promoted types in registers ↵Nadav Rotem2011-06-041-2/+40
| | | | | | (copyFromParts/copyToParts). llvm-svn: 132649
* Add a TODO about memory operands.Eric Christopher2011-06-031-1/+5
| | | | llvm-svn: 132559
* Have LowerOperandForConstraint handle multiple character constraints.Eric Christopher2011-06-021-1/+1
| | | | | | Part of rdar://9119939 llvm-svn: 132510
* Allow bitcasts between valid types of the same size and vectorEric Christopher2011-06-011-0/+6
| | | | | | | | types if the vector type is legal. Fixes rdar://9306086 llvm-svn: 132420
* Preserve debug info during iSel by keeping DanglingDebugInfoMap live until ↵Devang Patel2011-05-231-1/+10
| | | | | | | | end of function. Patch by Micah Villmow llvm-svn: 131908
* Eliminate some temporary variables, and don't call getByValTypeAlignmentChris Lattner2011-05-221-6/+8
| | | | | | when we're just going to throw the result away. No functionality change. llvm-svn: 131880
* Preserve debug info for unused zero extended boolean argument.Devang Patel2011-05-161-6/+27
| | | | | | Radar 9422775. llvm-svn: 131422
* Make codegen able to handle values of empty types. This is one wayRafael Espindola2011-05-131-6/+29
| | | | | | to fix PR9900. I will keep it open until sable is able to comment on it. llvm-svn: 131294
* Give the 'eh.sjlj.dispatchsetup' intrinsic call the value coming from the setjmpBill Wendling2011-05-111-1/+1
| | | | | | | | intrinsic call. This prevents it from being reordered so that it appears *before* the setjmp intrinsic (thus making it completely useless). <rdar://problem/9409683> llvm-svn: 131174
* Disable my little CopyToReg argument hack with fast-isel. ↵Eli Friedman2011-05-101-2/+3
| | | | | | rdar://problem/9413587 . llvm-svn: 131156
* Look through struct wrapped types for inline asm statments.Eric Christopher2011-05-091-0/+6
| | | | | | Patch by Evan Cheng. llvm-svn: 131093
* 80 col violations.Evan Cheng2011-05-061-3/+7
| | | | llvm-svn: 131015
* Avoid extra vreg copies for arguments passed in registers. Specifically, ↵Eli Friedman2011-05-051-12/+44
| | | | | | this can make MachineCSE more effective in some cases (especially in small functions). PR8361 / part of rdar://problem/8259436 . llvm-svn: 130928
* A dbg.declare may not be in entry block, even if it is referring to an ↵Devang Patel2011-04-251-4/+0
| | | | | | incoming argument. However, It is appropriate to emit DBG_VALUE referring to this incoming argument in entry block in MachineFunction. llvm-svn: 130129
* Fix a ton of comment typos found by codespell. Patch byChris Lattner2011-04-151-2/+2
| | | | | | Luis Felipe Strano Moraes! llvm-svn: 129558
* Avoid excess precision issues that lead to generating host-compiler-specific ↵Chris Lattner2011-04-091-2/+6
| | | | | | | | code. Switch lowering probably shouldn't be using FP for this. This resolves PR9581. llvm-svn: 129199
* Change -arm-trap-func= into a non-arm specific option. Now Intrinsic::trap ↵Evan Cheng2011-04-081-2/+15
| | | | | | is lowered into a call to the specified trap function at sdisel time. llvm-svn: 129152
* Revamp the SjLj "dispatch setup" intrinsic.Bill Wendling2011-04-051-1/+1
| | | | | | | | | | | | It needed to be moved closer to the setjmp statement, because the code directly after the setjmp needs to know about values that are on the stack. Also, the 'bitcast' of the function context was causing a dead load. This wouldn't be too horrible, except that at -O0 it wasn't optimized out, and because it wasn't using the correct base pointer (if there is a VLA), it would try to access a value from a garbage address. <rdar://problem/9130540> llvm-svn: 128873
* Add comments.Evan Cheng2011-04-011-2/+4
| | | | llvm-svn: 128730
* Assign node order numbers to results of call instruction lowering. This ↵Evan Cheng2011-04-011-4/+8
| | | | | | should improve src line debug info when sdisel is used. rdar://9199118 llvm-svn: 128728
* Turn SelectionDAGBuilder::GetRegistersForValue into a local function.Benjamin Kramer2011-03-261-14/+16
| | | | | | | | It couldn't be used outside of the file because SDISelAsmOperandInfo is local to SelectionDAGBuilder.cpp. Making it a static function avoids a weird linkage dance. llvm-svn: 128342
* Move more logic into getTypeForExtArgOrReturn.Cameron Zwarich2011-03-171-6/+2
| | | | llvm-svn: 127809
* Rename getTypeForExtendedInteger() to getTypeForExtArgOrReturn().Cameron Zwarich2011-03-171-1/+1
| | | | llvm-svn: 127807
* The x86-64 ABI says that a bool is only guaranteed to be sign-extended to a byteCameron Zwarich2011-03-161-5/+2
| | | | | | | | | | | rather than an int. Thankfully, this only causes LLVM to miss optimizations, not generate incorrect code. This just fixes the zext at the return. We still insert an i32 ZextAssert when reading a function's arguments, but it is followed by a truncate and another i8 ZextAssert so it is not optimized. llvm-svn: 127766
* Don't recompute something that we already have in a local variable.Cameron Zwarich2011-03-161-2/+2
| | | | llvm-svn: 127764
* Replace -dag-chain-limit flag with constant. It has survived a release cycle ↵Andrew Trick2011-03-111-3/+1
| | | | | | without being touched, so no longer needs to pollute the hidden-help text. llvm-svn: 127468
* Allow targets to specify a the type of the RHS of a shift parameterized on ↵Owen Anderson2011-02-251-7/+7
| | | | | | the type of the LHS. llvm-svn: 126518
* Fix formatting of debug helper string.Jim Grosbach2011-02-251-1/+1
| | | | llvm-svn: 126471
* Refactor the LiveOutInfo interface into a few methods on FunctionLoweringInfoCameron Zwarich2011-02-241-7/+8
| | | | | | and make the actual map private. llvm-svn: 126376
* Roll out r126169 and r126170 in an attempt to fix the selfhost bot.Cameron Zwarich2011-02-221-7/+1
| | | | llvm-svn: 126185
* Merge information about the number of zero, one, and sign bits of live-out ↵Cameron Zwarich2011-02-221-1/+7
| | | | | | | | | registers at phis. This enables us to eliminate a lot of pointless zexts during the DAGCombine phase. This fixes <rdar://problem/8760114>. llvm-svn: 126170
* Do not lose debug info of an inlined function argument even if the argument ↵Devang Patel2011-02-181-1/+1
| | | | | | | | is only used through GEPs. This time with a fix that avoids using invalidated DenseMap iterator. llvm-svn: 125984
* Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost failure.Cameron Zwarich2011-02-181-1/+1
| | | | llvm-svn: 125830
* Do not lose debug info of an inlined function argument even if the argument ↵Devang Patel2011-02-171-1/+1
| | | | | | is only used through GEPs. llvm-svn: 125794
* convert ConstantVector::get to use ArrayRef.Chris Lattner2011-02-151-22/+6
| | | | llvm-svn: 125537
* revert my ConstantVector patch, it seems to have made the llvm-gccChris Lattner2011-02-141-6/+22
| | | | | | builders unhappy. llvm-svn: 125504
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