aboutsummaryrefslogtreecommitdiff
path: root/lib/CodeGen/VirtRegRewriter.cpp
AgeCommit message (Collapse)Author
2010-08-05Avoid using a live std::multimap iterator while editing the map. It looks likeJakob Stoklund Olesen
we sometimes compare singular iterators, reported by ENABLE_EXPENSIVE_CHECKS. This fixes PR7825. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110355 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-2780 columnJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109513 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27fix typoJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109511 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Remove remaining calls to TII::isMoveInstr.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108556 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12Convert the last getPhysicalRegisterRegClass in VirtRegRewriter.cpp toRafael Espindola
getMinimalPhysRegClass. It was used to produce spills, and it is better to use the most specific class if possible. Update getLoadStoreRegOpcode to handle GR32_AD. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108115 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-11Convert uses of getPhysicalRegisterRegClass in VirtRegRewriter.cpp.Rafael Espindola
The first one was used just to call isSafeToMoveRegClassDefs. In general, using a more specific reg class is better, in practice only x86 implements that method and the results are always the same. The second one is in FindFreeRegister and is used to check if a register is in a register class, a much more direct call to contains is better as it should cover more cases and is faster. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-10Replace copyRegToReg with COPY everywhere in lib/CodeGen except for FastISel.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108062 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-09Change TII::foldMemoryOperand API to require the machine instruction to beJakob Stoklund Olesen
inserted in a MBB, and return an already inserted MI. This target API change is necessary to allow foldMemoryOperand to call storeToStackSlot and loadFromStackSlot when folding a COPY to a stack slot reference in a target independent way. The foldMemoryOperandImpl hook is going to change in the same way, but I'll wait until COPY folding is actually implemented. Most targets only fold copies and won't need to specialize this hook at all. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107991 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-09Handle COPY in VirtRegRewriter.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Convert EXTRACT_SUBREG to COPY when emitting machine instrs.Jakob Stoklund Olesen
EXTRACT_SUBREG no longer appears as a machine instruction. Use COPY instead. Add isCopy() checks in many places using isMoveInstr() and isExtractSubreg(). The isMoveInstr hook will be removed later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-25Cosmetic.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106865 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-25Fix a case where an earlyclobber operand of an asmDale Johannesen
is reused as an input. PR 4118. Testcase is too big, as usual with bugs in this area, but there's one in the PR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106816 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-02Slightly change the meaning of the reMaterialize target hook when the originalJakob Stoklund Olesen
instruction defines subregisters. Any existing subreg indices on the original instruction are preserved or composed with the new subreg index. Also substitute multiple operands mentioning the original register by using the new MachineInstr::substituteRegister() function. This is necessary because there will soon be <imp-def> operands added to non read-modify-write partial definitions. This instruction: %reg1234:foo = FLAP %reg1234<imp-def> will reMaterialize(%reg3333, bar) like this: %reg3333:bar-foo = FLAP %reg333:bar<imp-def> Finally, replace the TargetRegisterInfo pointer argument with a reference to indicate that it cannot be NULL. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105358 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Teach VirtRegRewriter to handle spilling in instructions that have multipleJakob Stoklund Olesen
definitions of the virtual register. This happens when spilling the registers produced by REG_SEQUENCE: %reg1047:5<def>, %reg1047:6<def>, %reg1047:7<def> = VLD3d8 %reg1033, 0, pred:14, pred:%reg0 The rewriter would spill the register multiple times, dead store elimination tried to keep up, but ended up cutting the branch it was sitting on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104321 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11It's not safe eliminate copies where src and dst have different sub-register ↵Evan Cheng
indices. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103450 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Add a DebugLoc argument to TargetInstrInfo::copyRegToReg, so that itDan Gohman
doesn't have to guess. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103194 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Add argument TargetRegisterInfo to loadRegFromStackSlot and storeRegToStackSlot.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103193 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29Remove DBG_VALUE which reference dead stack slots.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102654 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06Fix a number of clang -Wsign-compare warnings that didn't have an obviousJohn McCall
solution. The only reason these don't fire with gcc-4.2 is that gcc turns off part of -Wsign-compare in C++ on accident. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06Code clean up. Move includes from VirtRegRewriter.h to VirtRegRewriter.cpp.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100532 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Avoid being influenced by the presence of dbg_value instructions.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26Debug info shouldn't affect kills.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Extract methods from LocalRewriter::RewriteMBB bringing it down to 666 lines.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98295 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11VirtRegRewriter spring cleaning. No functional change.Jakob Stoklund Olesen
Move methods out of line and M-x whitespace-cleanup. Promote common method arguments to member variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98207 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Uniformize the way these options are printed. Requested byDuncan Sands
Russell Wallace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96580 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13Fix PR6283.Jakob Stoklund Olesen
When coalescing with a physreg, remember to add imp-def and imp-kill when dealing with sub-registers. Also fix a related bug in VirtRegRewriter where substitutePhysReg may reallocate the operand list on an instruction and invalidate the reg_iterator. This can happen when a register is mentioned twice on the same instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96072 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10fix a layering violation: VirtRegRewriter.cpp shouldn't use AsmPrinter.h.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95748 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10fix missing #includes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95745 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09move target-independent opcodes out of TargetInstrInfoChris Lattner
into TargetOpcodes.h. #include the new TargetOpcodes.h into MachineInstr. Add new inline accessors (like isPHI()) to MachineInstr, and start using them throughout the codebase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Add <imp-def> and <imp-kill> operands when replacing virtual sub-register ↵Jakob Stoklund Olesen
defs and kills. An instruction like this: %reg1097:1<def> = VMOVSR %R3<kill>, 14, %reg0 Must be replaced with this when substituting physical registers: %S0<def> = VMOVSR %R3<kill>, 14, %reg0, %D0<imp-def> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92812 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92590 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03improve portability to avoid conflicting with std::next in c++'0x.Chris Lattner
Patch by Howard Hinnant! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90365 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20Add MachineBasicBlock::getName, and use it in place of getBasicBlock()->getName.Jakob Stoklund Olesen
Fix debug code that assumes getBasicBlock never returns NULL. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18Fixed the in-place spiller and trivial rewriter, which had been broken by ↵Lang Hames
the recent SlotIndexes work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89238 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14Added getSubRegIndex(A,B) that returns subreg index of A to B. Use it to ↵Evan Cheng
replace broken code in VirtRegRewriter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88753 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14- Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo.Evan Cheng
- If destination is a physical register and it has a subreg index, use the sub-register instead. This fixes PR5423. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14Fix PR5412: Fix an inverted check and another missing sub-register check.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88738 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13Fix PR5411. Bug in UpdateKills. A reg def partially define its super-registers.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88719 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12Set the ReloadReuse AsmPrinter flag where appropriate.David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87030 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29When there is a 2-instruction spill sequence, recordDale Johannesen
the second (store) instruction in SpillSlotToUsesMap consistently. I don't think this matters functionally, but it's cleaner and Evan wants it this way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85463 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28When we generate spill code, then decide we don't needDale Johannesen
to spill after all, we weren't handling 2-instruction spill sequences correctly (PPC Altivec). We need to remove the store in this case. Removing the other instruction(s) would be goodness but is not needed for correctness, and isn't done here. 7331562. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85437 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26- Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests andEvan Cheng
bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg around. - Relax register scavenging to allow use of partially "not-live" registers. It's common for targets to operate on registers where the top bits are undef. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... = d0 When the insert_subreg is eliminated by the coalescer, the scavenger used to complain. The previous fix was to keep to insert_subreg around. But that's brittle and it's overly conservative when we want to use the scavenger to allocate registers. It's actually legal and desirable for other instructions to use the "undef" part of d0. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... s1 = = s1 = d0 We probably need add a "partial-undef" marker on machine operand so the machine verifier would not complain. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85091 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Use isIdentityCopy. Fix a bozo bug (flipped condition) in InvalidateRegDef.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85047 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Remove includes of Support/Compiler.h that are no longer needed after theNick Lewycky
VISIBILITY_HIDDEN removal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85043 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.Nick Lewycky
Chris claims we should never have visibility_hidden inside any .cpp file but that's still not true even after this commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-12Revert the kludge in 76703. I got a cleanDale Johannesen
bootstrap of FSF-style PPC, so there is some reason to believe the original bug (which was never analyzed) has been fixed, probably by 82266. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83871 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-06Remove some unused variables and methods warned about byDuncan Sands
icc (#177, partial). Patch by Erick Tryzelaar. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81106 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-03Fixed a test that ensures the LocalRewriter does not attempt toLang Hames
avoid reloads by reusing clobbered registers. This was causing issues in 256.bzip2 when compiled with PIC for a while (starting at r78217), though the problem has since been masked. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80872 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Fix PR4753.Jakob Stoklund Olesen
When undoing a reuse in ReuseInfo::GetRegForReload, check if it was only a sub-register being used. The MachineOperand::getSubReg() method is only valid for virtual registers, so we have to recover the sub-register index manually. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79855 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Kill off more cerr/cout uses and prune includes a bit.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79852 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-28 18:45:49 +0000