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* Delete code that's not safe.Evan Cheng2010-06-101-13/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105774 91177308-0d34-0410-b5e6-96231b3b80d8
* be slightly more subtle about skipping dbg_value instructions; otherwise, if aJim Grosbach2010-06-091-5/+6
| | | | | | | | dbg_value immediately follows a sequence of ldr/str instructions that should be combined into an ldm/stm and is the last instruction in the block, then combine may end up being skipped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105758 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark physregs defined by inline asm as implicit.Jakob Stoklund Olesen2010-06-091-2/+6
| | | | | | | This is a bit of a hack to make inline asm look more like call instructions. It would be better to produce correct dead flags during isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105749 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow target to place 2-address pass inserted copies in better spots. Thumb2 ↵Evan Cheng2010-06-094-13/+58
| | | | | | will use this to try to avoid breaking up IT blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105745 91177308-0d34-0410-b5e6-96231b3b80d8
* It's an error to translate this:Bill Wendling2010-06-091-0/+20
| | | | | | | | | | | | | | | | | | | | | %reg1025 = <sext> %reg1024 ... %reg1026 = SUBREG_TO_REG 0, %reg1024, 4 into this: %reg1025 = <sext> %reg1024 ... %reg1027 = EXTRACT_SUBREG %reg1025, 4 %reg1026 = SUBREG_TO_REG 0, %reg1027, 4 The problem here is that SUBREG_TO_REG is there to assert that an implicit zext occurs. It doesn't insert a zext instruction. If we allow the EXTRACT_SUBREG here, it will give us the value after the <sext>, not the original value of %reg1024 before <sext>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105741 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 105540, 105542, 105544, 105546, and 105548 to unbreak bootstrapping.Evan Cheng2010-06-091-53/+147
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105740 91177308-0d34-0410-b5e6-96231b3b80d8
* Pulled CodeMetrics out of InlineCost.h and made it a bit more general, so it ↵Kenneth Uildriks2010-06-092-8/+21
| | | | | | can be reused from PartialSpecializationCost git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105725 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix SPU to cope with vector insertelement to an undef position.Kalle Raiskila2010-06-091-3/+8
| | | | | | | We default to inserting to lane 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105722 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle loading from/storing to undef pointers on SPU by inserting a Kalle Raiskila2010-06-091-1/+3
| | | | | | | random load/store, rather than crashing llc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105710 91177308-0d34-0410-b5e6-96231b3b80d8
* Typo.Evan Cheng2010-06-091-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105677 91177308-0d34-0410-b5e6-96231b3b80d8
* A few new x86-64 specific README entries.Eli Friedman2010-06-091-0/+82
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105674 91177308-0d34-0410-b5e6-96231b3b80d8
* Thumb2 IT blocks are fairly expensive. When there are multiple selects usingEvan Cheng2010-06-093-13/+292
| | | | | | | | | | | | | | | | the same condition, it's important to make sure they are scheduled together to avoid forming multiple IT blocks. I'm adding a pre-regalloc pass that forms IT blocks early (by re-scheduling instructions and split basic blocks) to attempt to fix this. This is not turned on by default since I am not sure this is the right fix. Another issue is llvm selects are modeled as two-address conditional moves. This can be very bad when the copies before the conditional moves are not coalesced away. Teach IT formation pass to move the copies above the IT block (when legal) to avoid breaking the IT block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105669 91177308-0d34-0410-b5e6-96231b3b80d8
* Add argument name comments.Jakob Stoklund Olesen2010-06-091-2/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105665 91177308-0d34-0410-b5e6-96231b3b80d8
* Incremental improvement to the handling of the x86 "Jump if rCX Zero"Kevin Enderby2010-06-081-0/+14
| | | | | | | | | | | | | instruction. Added the 64-bit version "jrcxz" so it is recognized and also added the checks for incorrect uses of "jcxz" in 64-bit mode and "jrcxz" in 32-bit mode. Still to do is to correctly handle the encoding of the instruction adding the Address-size override prefix byte, 0x67, when the width of the count register is not the same as the mode the machine is running in. Which for example means the encoding of "jecxz" depends if you are assembling as a 32-bit target or a 64-bit target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105661 91177308-0d34-0410-b5e6-96231b3b80d8
* Split out these asserts so it's more apparent why we're not assemblingEric Christopher2010-06-081-2/+2
| | | | | | | that rip-relative address when executing in 32-bit mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105656 91177308-0d34-0410-b5e6-96231b3b80d8
* fix copy/paste/modify think-oJim Grosbach2010-06-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105653 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r105521, this time appending "LLU" to 64 bitBruno Cardoso Lopes2010-06-088-31/+256
| | | | | | | immediates to avoid breaking the build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105652 91177308-0d34-0410-b5e6-96231b3b80d8
* Ensure that mov and not lea are used to stick the address intoEric Christopher2010-06-083-10/+21
| | | | | | | the register. While we're at it, make sure it's in the right one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105645 91177308-0d34-0410-b5e6-96231b3b80d8
* fix typoJim Grosbach2010-06-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105634 91177308-0d34-0410-b5e6-96231b3b80d8
* Use const_iterator where appropriate.Daniel Dunbar2010-06-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105620 91177308-0d34-0410-b5e6-96231b3b80d8
* DeltaAlgorithm: Tweak split to split by first/second half instead of ↵Daniel Dunbar2010-06-081-2/+2
| | | | | | even/odd, since adjacent changes are more likely to be related. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105613 91177308-0d34-0410-b5e6-96231b3b80d8
* ADT: Add DAGDeltaAlgorithm, which is a DAG minimization algorithm built on ↵Daniel Dunbar2010-06-082-0/+358
| | | | | | | | top of the standard 'delta debugging' algorithm. - This can give substantial speedups in the delta process for inputs we can construct dependency information for. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105612 91177308-0d34-0410-b5e6-96231b3b80d8
* Use realloc instead of malloc+memcpy when growing a POD SmallVector. A smartBenjamin Kramer2010-06-081-9/+12
| | | | | | | | realloc implementation can try to expand the allocated memory block in-place, avoiding the copy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105605 91177308-0d34-0410-b5e6-96231b3b80d8
* Flag SPU's function call sequence together. Kalle Raiskila2010-06-081-1/+1
| | | | | | | | Discussed here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2010-June/032107.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105601 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix up a comment.Bob Wilson2010-06-081-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105591 91177308-0d34-0410-b5e6-96231b3b80d8
* Further changes for Neon vector shuffles:Bob Wilson2010-06-072-68/+56
| | | | | | | | | | | - change isShuffleMaskLegal to show that all shuffles with 32-bit and 64-bit elements are legal - the Neon shuffle instructions do not support 64-bit elements, but we were not checking for that before lowering shuffles to use them - remove some 64-bit element vduplane patterns that are no longer needed git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105586 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a mistake in my previous change r105437: don't access operand 2 and assumeBob Wilson2010-06-071-3/+2
| | | | | | | | that it is an immediate before checking that the instruction is an EXTRACT_SUBREG. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105585 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some basic debug output.Dan Gohman2010-06-071-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105561 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle dbg_value instructions (i.e., skip them) when generating IT blocks.Jim Grosbach2010-06-071-3/+4
| | | | | | rdar://7797940 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105557 91177308-0d34-0410-b5e6-96231b3b80d8
* Cleanup. Process the dbg_values separatelyJim Grosbach2010-06-071-18/+16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105554 91177308-0d34-0410-b5e6-96231b3b80d8
* Make bugpoint dead-argument-hacking actually work, and actually test it.Dan Gohman2010-06-071-0/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105551 91177308-0d34-0410-b5e6-96231b3b80d8
* The FoldingSet hash data includes pointer values, so it isn'tDan Gohman2010-06-071-21/+28
| | | | | | | | determinstic. Instead, give SCEV objects an arbitrary sequence number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105548 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize this code somewhat by taking advantage of the factDan Gohman2010-06-071-7/+13
| | | | | | | that the operands are sorted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105546 91177308-0d34-0410-b5e6-96231b3b80d8
* Another place where the code wanted to access the argument list and not all ofBill Wendling2010-06-071-2/+2
| | | | | | | the operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105545 91177308-0d34-0410-b5e6-96231b3b80d8
* Micro-optimize this, to speed up this hotspot in debug builds a little.Dan Gohman2010-06-071-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105544 91177308-0d34-0410-b5e6-96231b3b80d8
* Micro-optimize this.Dan Gohman2010-06-071-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105542 91177308-0d34-0410-b5e6-96231b3b80d8
* Move exit check where it really belongs.Jim Grosbach2010-06-071-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105541 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize ScalarEvolution's SCEVComplexityCompare predicate: don't goDan Gohman2010-06-071-123/+14
| | | | | | | | | | | | scrounging through SCEVUnknown contents and SCEVNAryExpr operands; instead just do a simple deterministic comparison of the precomputed hash data. Also, since this is more precise, it eliminates the need for the slow N^2 duplicate detection code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105540 91177308-0d34-0410-b5e6-96231b3b80d8
* Create new accessors to get arguments for call/invoke instructions. It breaksBill Wendling2010-06-073-15/+18
| | | | | | | | | encapsulation to force the users of these classes to know about the internal data structure of the Operands structure. It also can lead to errors, like in the MSIL writer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105539 91177308-0d34-0410-b5e6-96231b3b80d8
* Partial specialization was not checking the callsite to make sure it was ↵Kenneth Uildriks2010-06-051-9/+33
| | | | | | using the same constants as the specialization, leading to calls to the wrong specialization. Patch by Takumi Nakamura\! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105528 91177308-0d34-0410-b5e6-96231b3b80d8
* This bug is also present in MSVC10. Requested by Elrood on IRC.Duncan Sands2010-06-051-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105527 91177308-0d34-0410-b5e6-96231b3b80d8
* revert r105521, which is breaking the buildbots with stuff like this:Chris Lattner2010-06-058-256/+31
| | | | | | | | | | | | | | | | In file included from X86InstrInfo.cpp:16: X86GenInstrInfo.inc:2789: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2790: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2792: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2793: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2808: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2809: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2816: error: integer constant is too large for 'long' type X86GenInstrInfo.inc:2817: error: integer constant is too large for 'long' type git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105524 91177308-0d34-0410-b5e6-96231b3b80d8
* Initial AVX support for some instructions. No patterns matchedBruno Cardoso Lopes2010-06-058-31/+256
| | | | | | | yet, only assembly encoding support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105521 91177308-0d34-0410-b5e6-96231b3b80d8
* Improvements to tail call code. No functional effectDale Johannesen2010-06-051-20/+22
| | | | | | | | unless using -arm-tail-calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105515 91177308-0d34-0410-b5e6-96231b3b80d8
* getFoldedOffsetOf no longer does anything special with vector types.Dan Gohman2010-06-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105514 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 105492 & 105493 due to a testcase regression. Radar 7424645.Stuart Hastings2010-06-052-36/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105511 91177308-0d34-0410-b5e6-96231b3b80d8
* LSR needs to remember inserted instructions even in postinc mode, becauseDan Gohman2010-06-051-1/+3
| | | | | | | | there could be multiple subexpressions within a single expansion which require insert point adjustment. This fixes PR7306. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105510 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some liveout handling related to tail calls, see comments.Dale Johannesen2010-06-052-12/+12
| | | | | | | | | I don't think this ever resulted in problems on x86, but it would on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105509 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-apply 105308 with fix.Evan Cheng2010-06-041-7/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105502 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't track users of undef values; they aren't interesting forDan Gohman2010-06-041-1/+5
| | | | | | | register pressure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105501 91177308-0d34-0410-b5e6-96231b3b80d8
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