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path: root/lib/Target/X86/X86FloatingPoint.cpp
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2009-09-08Merge 81187 from mainline.Tanya Lattner
fix PR4767, a crash because fp stackifier visited blocks in depth first order, so it wouldn't process unreachable blocks. When compiling at -O0, late dead block elimination isn't done and the bad instructions got to isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81268 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03- s/DOUT/DEBUG(errs()/gBill Wendling
- Tidy up some headers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77929 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-01X86 floating-point passes don't modify the CFG.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77757 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.Torok Edwin
This adds location info for all llvm_unreachable calls (which is a macro now) in !NDEBUG builds. In NDEBUG builds location info and the message is off (it only prints "UREACHABLE executed"). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75640 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-11assert(0) -> LLVM_UNREACHABLE.Torok Edwin
Make llvm_unreachable take an optional string, thus moving the cerr<< out of line. LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for NDEBUG builds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30Fix PR4485.Rafael Espindola
Avoid unnecessary duplication of operand 0 of X86::FpSET_ST0_80. This duplication would cause one register to remain on the stack at the function return. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74534 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30Fix PR4484.Rafael Espindola
This was caused by me confounding FP0 and ST(0). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74523 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-29FIX PR 4459.Rafael Espindola
Not sure I understand how the temp register gets used, but this fixes a bug and introduces no regressions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74446 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-21Fix PR4185.Rafael Espindola
Handle FpSET_ST0_80 being used when ST0 is still alive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73850 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-28Have only one definition of X86AddrNumOperands.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67949 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-28Make code a bit less brittle by no hardcoding the numberRafael Espindola
of operands in an address in so many places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67945 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23Model inline asm constraint which ties an input to an output register as ↵Evan Cheng
machine operand TIED_TO constraint. This eliminated the need to pre-allocate registers for these. This also allows register allocator can eliminate the unneeded copies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67512 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Remove non-DebugLoc versions of BuildMI from X86.Dale Johannesen
There were some that might even matter in X86FastISel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64437 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Implement FpSET_ST1_*.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64186 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03Switch the MachineOperand accessors back to the short names likeDan Gohman
isReg, etc., from isRegister, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-22Instead of setPreservesAll, just mark them preseving machine loop info and ↵Evan Cheng
machine dominators. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-22Mark several codegen passes as preserving all analysis.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56469 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
2008-09-04Tidy up several unbeseeming casts from pointer to intptr_t.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-14Remove more uses of std::set.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54787 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-21Eliminate a compilation warning.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53873 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-07Pool-allocation for MachineInstrs, MachineBasicBlocks, andDan Gohman
MachineMemOperands. The pools are owned by MachineFunctions. This drastically reduces the number of calls to malloc/free made during the "Emit" phase of scheduling, as well as later phases in CodeGen. Combined with other changes, this speeds up the "instruction selection" phase of CodeGen by 10% in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53212 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-21Restore this assert now that the livevar bug is fixed.Chris Lattner
This verifies kill info for "ret" fp operands is right. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48656 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-21remove Evan's "ugly hack" that sorta attempted to get Chris Lattner
x86-64 return conventions correct, but was never enabled. We can now do the "right thing" with multiple return values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48635 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-21Add support for calls that return two FP values inChris Lattner
ST(0)/ST(1). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48634 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-21disable a bogus assertion.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48633 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-21Enable support for returning two long-double values in ST(0)/ST(1).Chris Lattner
This allows us to compile fp-stack-2results.ll into: _test: fldz fld1 ret which returns 1 in ST(0) and 0 in ST(1). This is needed for x86-64 _Complex long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48632 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Implement basic support for the 'f' register class constraint. This basicallyChris Lattner
works, but probably won't if you mix it with 't' or 'u' yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48243 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Fix the build on gcc 4.2.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48212 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Change the model for FP Stack return to use fp operands on the Chris Lattner
RET instruction instead of using FpSET_ST0_32. This also generalizes the code to handling returning of multiple FP results. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48209 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-09rename FP_SETRESULT -> FP_SET_ST0Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48094 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-09rename FpGETRESULT32 -> FpGET_ST0_32 etc. Add support forChris Lattner
isel'ing value preserving FP roundings from one fp stack reg to another into a noop, instead of stack traffic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48093 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05Refactor code. Remove duplicated functions that basically do the same thing asEvan Cheng
findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47927 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Work in progress. This patch *fixes* x86-64 calls which are modelled as ↵Evan Cheng
StructRet but really should be return in registers, e.g. _Complex long double, some 128-bit aggregates. This is a short term solution that is necessary only because llvm, for now, cannot model i128 nor call's with multiple results. Status: This only works for direct calls, and only the caller side is done. Disabled for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46527 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Improve the FP stackifier to decide all on its own whether Chris Lattner
an instruction kills a register or not. This is cheap and easy to do now that instructions record this on their flags, and this eliminates the second pass of LiveVariables from the x86 backend. This speeds up a release llc by ~2.5%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45955 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11rename MachineInstr::setInstrDescriptor -> setDescChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45871 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07rename TargetInstrDescriptor -> TargetInstrDesc.Chris Lattner
Make MachineInstr::getDesc return a reference instead of a pointer, since it can never be null. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45695 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptorChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45680 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflectsChris Lattner
that it is cheap and efficient to get. Move a variety of predicates from TargetInstrInfo into TargetInstrDescriptor, which makes it much easier to query a predicate when you don't have TII around. Now you can use MI->getDesc()->isBranch() instead of going through TII, and this is much more efficient anyway. Not all of the predicates have been moved over yet. Update old code that used MI->getInstrDescriptor()->Flags to use the new predicates in many places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45674 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31Rename SSARegMap -> MachineRegisterInfo in keeping with the idea Chris Lattner
that "machine" classes are used to represent the current state of the code being compiled. Given this expanded name, we can start moving other stuff into it. For now, move the UsedPhysRegs and LiveIn/LoveOuts vectors from MachineFunction into it. Update all the clients to match. This also reduces some needless #includes, such as MachineModuleInfo from MachineFunction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-29Enabling new condition code modeling scheme.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42459 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-25New style x87 cmp instructions.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42312 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-25Added support for new condition code modeling scheme (i.e. physical register ↵Evan Cheng
dependency). These are a bunch of instructions that are duplicated so the x86 backend can support both the old and new schemes at the same time. They will be deleted after all the kinks are worked out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42285 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-20another long double bugletDale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42159 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-17Remove RSTRegClass case from loadRegFromStackSlotDale Johannesen
and storeRegToStackSlot. Evan and I concluded this should never be needed and it appears to be true. (It if is needed, adjustment would be needed for long double to work.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42049 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-14Remove isReg, isImm, and isMBB, and change all their users to use Dan Gohman
isRegister, isImmediate, and isMachineBasicBlock, which are equivalent, and more popular. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41958 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11My compiler warns about the semicolon.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41840 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07Add lengthof and endof templates that hide a lot of sizeof computations.Owen Anderson
Patch by Sterling Stein! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41758 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07Long double patch 8 of N: make it partially work inDale Johannesen
SSE mode (all but conversions <-> other FP types, I think): >>Do not mark all-80-bit operations as "Requires[FPStack]" (which really means "not SSE"). >>Refactor load-and-extend to facilitate this. >>Update comments. >>Handle long double in SSE when computing FP_REG_KILL. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40906 91177308-0d34-0410-b5e6-96231b3b80d8
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