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path: root/lib/CodeGen/MachineVerifier.cpp
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* Convert more GenRegisterInfo tables from unsigned to uint16_t to reduce ↵Craig Topper2012-03-05
| | | | | | static data size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152016 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the operand iterator into MachineInstrBundle.h where it belongs.Jakob Stoklund Olesen2012-02-29
| | | | | | | | | Extract a base class and provide four specific sub-classes for iterating over const/non-const bundles/instructions. This eliminates the mystery bool constructor argument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151684 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle regmasks in the machine code verifier.Jakob Stoklund Olesen2012-02-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151607 91177308-0d34-0410-b5e6-96231b3b80d8
* Update machine code verifier.Jakob Stoklund Olesen2012-02-27
| | | | | | | | | After the SlotIndex slot names were updated, it is possible to apply stricter checks to live intervals. Also treat bundles as bags of operands when checking live intervals. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151531 91177308-0d34-0410-b5e6-96231b3b80d8
* Update MachineVerifier to check the new physreg live-in rules.Lang Hames2012-02-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150496 91177308-0d34-0410-b5e6-96231b3b80d8
* - Add MachineInstrBundle.h and MachineInstrBundle.cpp. This includes a functionEvan Cheng2011-12-14
| | | | | | | | | | | to finalize MI bundles (i.e. add BUNDLE instruction and computing register def and use lists of the BUNDLE instruction) and a pass to unpack bundles. - Teach more of MachineBasic and MachineInstr methods to be bundle aware. - Switch Thumb2 IT block to MI bundles and delete the hazard recognizer hack to prevent IT blocks from being broken apart. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146542 91177308-0d34-0410-b5e6-96231b3b80d8
* Add bundle aware API for querying instruction properties and switch the codeEvan Cheng2011-12-07
| | | | | | | | | | | | | | | generator to it. For non-bundle instructions, these behave exactly the same as the MC layer API. For properties like mayLoad / mayStore, look into the bundle and if any of the bundled instructions has the property it would return true. For properties like isPredicable, only return true if *all* of the bundled instructions have the property. For properties like canFoldAsLoad, isCompare, conservatively return false for bundles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove all remaining uses of Value::getNameStr().Benjamin Kramer2011-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144648 91177308-0d34-0410-b5e6-96231b3b80d8
* Use getVNInfoBefore() when it makes sense.Jakob Stoklund Olesen2011-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144517 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename SlotIndexes to match how they are used.Jakob Stoklund Olesen2011-11-13
| | | | | | | | | | | | | | | | | | | | The old naming scheme (load/use/def/store) can be traced back to an old linear scan article, but the names don't match how slots are actually used. The load and store slots are not needed after the deferred spill code insertion framework was deleted. The use and def slots don't make any sense because we are using half-open intervals as is customary in C code, but the names suggest closed intervals. In reality, these slots were used to distinguish early-clobber defs from normal defs. The new naming scheme also has 4 slots, but the names match how the slots are really used. This is a purely mechanical renaming, but some of the code makes a lot more sense now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144503 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix sub-register operand verification.Jakob Stoklund Olesen2011-10-05
| | | | | | | | | PhysReg operands are not allowed to have sub-register indices at all. For virtual registers with sub-reg indices, check that all registers in the register class support the sub-reg index. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141220 91177308-0d34-0410-b5e6-96231b3b80d8
* Verify that terminators follow non-terminators.Jakob Stoklund Olesen2011-09-23
| | | | | | This exposes a -segmented-stacks bug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140429 91177308-0d34-0410-b5e6-96231b3b80d8
* Lower ARM adds/subs to add/sub after adding optional CPSR operand.Andrew Trick2011-09-21
| | | | | | | | | | | | | | This is still a hack until we can teach tblgen to generate the optional CPSR operand rather than an implicit CPSR def. But the strangeness is now limited to the selection DAG. ADD/SUB MI's no longer have implicit CPSR defs, nor do we allow flag setting variants of these opcodes in machine code. There are several corner cases to consider, and getting one wrong would previously lead to nasty miscompilation. It's not the first time I've debugged one, so this time I added enough verification to ensure it won't happen again. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140228 91177308-0d34-0410-b5e6-96231b3b80d8
* Stop verifying hasPHIKill() flags.Jakob Stoklund Olesen2011-09-15
| | | | | | | | | | There is only one legitimate use remaining, in addIntervalsForSpills(). All other calls to hasPHIKill() are only used to update PHIKill flags. The addIntervalsForSpills() function is part of the old spilling framework, only used by linearscan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139783 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Don't check liveness of unallocatable registers."Jakob Stoklund Olesen2011-07-30
| | | | | | | The ARM target depends on CPSR liveness being tracked after register allocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136548 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't check liveness of unallocatable registers.Jakob Stoklund Olesen2011-07-29
| | | | | | | | | | | | This includes registers like EFLAGS and ST0-ST7. We don't check for liveness issues in the verifier and scavenger because registers will never be allocated from these classes. While in SSA form, we do care about the liveness of unallocatable unreserved registers. Liveness of EFLAGS and ST0 neds to be correct for MachineDCE and MachineSinking. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136541 91177308-0d34-0410-b5e6-96231b3b80d8
* Check for multiple defs in the machine code verifier.Jakob Stoklund Olesen2011-07-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136535 91177308-0d34-0410-b5e6-96231b3b80d8
* - Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo andEvan Cheng2011-06-28
| | | | | | | | | sink them into MC layer. - Added MCInstrInfo, which captures the tablegen generated static data. Chang TargetInstrInfo so it's based off MCInstrInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134021 91177308-0d34-0410-b5e6-96231b3b80d8
* More refactoring. Move getRegClass from TargetOperandInfo to TargetInstrInfo.Evan Cheng2011-06-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133944 91177308-0d34-0410-b5e6-96231b3b80d8
* Use TRI::has{Sub,Super}ClassEq() where possible.Jakob Stoklund Olesen2011-06-02
| | | | | | No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132455 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r128961 because it didn't include a test and causes the verifier to failCameron Zwarich2011-05-19
| | | | | | | | on CodeGen/X86/2007-05-07-InvokeSRet.ll. There is probably a bug here that was fixed by r128961, but since there is no test or reference to a source file I have to revert it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131618 91177308-0d34-0410-b5e6-96231b3b80d8
* SjLj EH could produce a machine basic block that legitimately has more than oneBill Wendling2011-05-04
| | | | | | | | | | | | | | landing pad as its successor. SjLj exception handling jumps to the correct landing pad via a switch statement that's generated right before code-gen. Loosen the constraint in the machine instruction verifier to allow for this. Note, this isn't the most rigorous check since we cannot determine where that switch statement came from. But it's marginally better than turning this check off when SjLj exceptions are used. <rdar://problem/9187612> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130881 91177308-0d34-0410-b5e6-96231b3b80d8
* Permit blocks to branch directly to a landing pad.Jakob Stoklund Olesen2011-04-05
| | | | | | Treat the landing pad as a normal successor when that happens. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128961 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow kill flags on two-address instructions. They are harmless.Jakob Stoklund Olesen2011-03-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128643 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark all uses as <undef> when joining a copy.Jakob Stoklund Olesen2011-03-31
| | | | | | | | | | | | This way, shrinkToUses() will ignore the instruction that is about to be deleted, and we avoid leaving invalid live ranges that SplitKit doesn't like. Fix a misunderstanding in MachineVerifier about <def,undef> operands. The <undef> flag is valid on def operands where it has the same meaning as <undef> on a use operand. It only applies to sub-register defines which also read the full register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128642 91177308-0d34-0410-b5e6-96231b3b80d8
* Verify kill flags conservatively.Jakob Stoklund Olesen2011-02-04
| | | | | | | | | | Allow a live range to end with a kill flag, but don't allow a kill flag that doesn't end the live range. This makes the machine code verifier more useful during register allocation when kill flag computation is deferred. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124838 91177308-0d34-0410-b5e6-96231b3b80d8
* Verify slot index ordering.Jakob Stoklund Olesen2011-01-12
| | | | | | The slot indexes must be monotonically increasing through the function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123324 91177308-0d34-0410-b5e6-96231b3b80d8
* Verify that machine instruction parent pointers are consistent.Jakob Stoklund Olesen2011-01-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123322 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace TargetRegisterInfo::printReg with a PrintReg class that also works ↵Jakob Stoklund Olesen2011-01-09
| | | | | | | | | | without a TRI instance. Print virtual registers numbered from 0 instead of the arbitrary FirstVirtualRegister. The first virtual register is printed as %vreg0. TRI::NoRegister is printed as %noreg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123107 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a MachineVerifier loop that probably didn't mean to skip the last twoJakob Stoklund Olesen2011-01-08
| | | | | | virtual registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123100 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify some code in MachineVerifier that was doing the correct thing, but notCameron Zwarich2010-12-28
| | | | | | | in the most obvious way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122610 91177308-0d34-0410-b5e6-96231b3b80d8
* Add knowledge of phi-def and phi-kill valnos to MachineVerifier's predecessorCameron Zwarich2010-12-27
| | | | | | | | | | valno verification. The "Different value live out of predecessor" check is incorrect in the case of phi-def valnos, so just skip that check for phi-def valnos and instead check that all of the valnos for predecessors have phi-kill. Fixes PR8863. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122581 91177308-0d34-0410-b5e6-96231b3b80d8
* MachineVerifier should count landing pad successors as basic blocks rather thanCameron Zwarich2010-12-20
| | | | | | | out-edges. Fixes PR8824. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122228 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach MachineVerifier that early clobber defs begin at USE slots and other defsCameron Zwarich2010-12-20
| | | | | | | begin at DEF slots. Fixes the second half of PR8813. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122225 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a missing check from r122218.Cameron Zwarich2010-12-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122224 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't assume that an instruction ending a register's live range always readsCameron Zwarich2010-12-20
| | | | | | | the register; it may be a dead def instead. Fixes PR8820. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122218 91177308-0d34-0410-b5e6-96231b3b80d8
* Ignore debug values when performing MachineVerifier liveness checks. FixesCameron Zwarich2010-12-20
| | | | | | | PR8822. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122207 91177308-0d34-0410-b5e6-96231b3b80d8
* Early clobber operands are allowed to be defined at use indices. This fixes oneCameron Zwarich2010-12-19
| | | | | | | half of PR8813. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122205 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR8811 by teaching MachineVerifier about optional defs.Cameron Zwarich2010-12-19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122199 91177308-0d34-0410-b5e6-96231b3b80d8
* Pass a Banner argument to the machine code verifier both fromJakob Stoklund Olesen2010-12-18
| | | | | | | | createMachineVerifierPass and MachineFunction::verify. The banner is printed before the machine code dump, just like the printer pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122113 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow missing kill flags on an untied operand of a two-address instruction whenJakob Stoklund Olesen2010-12-17
| | | | | | | | | | | | | | the operand uses the same register as a tied operand: %r1 = add %r1, %r1 If add were a three-address instruction, kill flags would be required on at least one of the uses. Since it is a two-address instruction, the tied use operand must not have a kill flag. This change makes the kill flag on the untied use operand optional. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122082 91177308-0d34-0410-b5e6-96231b3b80d8
* Only avoid the check if we're the last operand before the variableEric Christopher2010-11-17
| | | | | | | operands in a variadic instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119446 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the verifier a little quieter on instructions that it's probablyEric Christopher2010-11-16
| | | | | | | (and likely) wrong about anyhow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119320 91177308-0d34-0410-b5e6-96231b3b80d8
* Be more precise about verifying missing kill flags.Jakob Stoklund Olesen2010-11-01
| | | | | | | It is legal for an instruction to have two operands using the same register, only one a kill. This is interpreted as a kill. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117981 91177308-0d34-0410-b5e6-96231b3b80d8
* Add kill flag verification.Jakob Stoklund Olesen2010-11-01
| | | | | | | | At least X86FloatingPoint requires correct kill flags after register allocation, and targets using register scavenging benefit. Conservative kill flags are not enough. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117960 91177308-0d34-0410-b5e6-96231b3b80d8
* Add basic LiveStacks verification.Jakob Stoklund Olesen2010-11-01
| | | | | | | When an instruction refers to a spill slot with a LiveStacks entry, check that the spill slot is live at the instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117944 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable more of physical register live intervals verification.Jakob Stoklund Olesen2010-10-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117762 91177308-0d34-0410-b5e6-96231b3b80d8
* Print out the connected components in the verifier after complaining about theirJakob Stoklund Olesen2010-10-29
| | | | | | multiplicity. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117630 91177308-0d34-0410-b5e6-96231b3b80d8
* One day, physical register live ranges will be sensible.Jakob Stoklund Olesen2010-10-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117602 91177308-0d34-0410-b5e6-96231b3b80d8
* Physical registers trivially have multiple connected components all the time.Jakob Stoklund Olesen2010-10-27
| | | | | | Only virtuals should be requires to be connected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117422 91177308-0d34-0410-b5e6-96231b3b80d8
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