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path: root/lib/Target/X86/X86ISelLowering.cpp
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* Merging r167718 into 3.2 release branchPawel Wodnicki2012-11-19
| | | | | | | | | | | Fix PR14314 - Fix operand order for atomic sub, where the minuend is the value loaded from memory and the subtrahend is the parameter specified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_32@168336 91177308-0d34-0410-b5e6-96231b3b80d8
* Move some helper methods to being static functions in the implementation file.Craig Topper2012-11-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167696 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unnecessary subtraction and addition by 1 around a couple for loops.Craig Topper2012-11-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167673 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up spacing. No functional change.Craig Topper2012-11-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167671 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify custom emitter code for pcmp(e/i)str(i/m) and make the helper ↵Craig Topper2012-11-10
| | | | | | functions static. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167669 91177308-0d34-0410-b5e6-96231b3b80d8
* Cleanup pcmp(e/i)str(m/i) instruction definitions and load folding support.Craig Topper2012-11-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167652 91177308-0d34-0410-b5e6-96231b3b80d8
* indentNadav Rotem2012-11-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167607 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support of RTM from TSX extensionMichael Liao2012-11-08
| | | | | | | | | | - Add RTM code generation support throught 3 X86 intrinsics: xbegin()/xend() to start/end a transaction region, and xabort() to abort a tranaction region git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167573 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify code. No functionality change.Jakub Staszak2012-11-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167505 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the helper functions static. No functional change.Nadav Rotem2012-11-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167501 91177308-0d34-0410-b5e6-96231b3b80d8
* CostModel: add another known vector trunc optimization.Nadav Rotem2012-11-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167488 91177308-0d34-0410-b5e6-96231b3b80d8
* Cost Model: add tables for some avx type-conversion hacks.Nadav Rotem2012-11-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167480 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor the getTypeLegalizationCost interface. No functionality change.Nadav Rotem2012-11-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167422 91177308-0d34-0410-b5e6-96231b3b80d8
* CostModel: Add tables for the common x86 compares.Nadav Rotem2012-11-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167421 91177308-0d34-0410-b5e6-96231b3b80d8
* Suppress signed/unsigned comparison warning.Richard Smith2012-11-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167410 91177308-0d34-0410-b5e6-96231b3b80d8
* Cost Model: Normalize the insert/extract index when splitting typesNadav Rotem2012-11-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167402 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement the cost of abnormal x86 instruction lowering as a table.Nadav Rotem2012-11-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167395 91177308-0d34-0410-b5e6-96231b3b80d8
* X86 CostModel: Add support for a some of the common arithmetic instructions ↵Nadav Rotem2012-11-03
| | | | | | for SSE4, AVX and AVX2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167347 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert the majority of the next patch in the address space series:Chandler Carruth2012-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | r165941: Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis. Despite this commit log, this change primarily changed stuff outside of VMCore, and those changes do not carry any tests for correctness (or even plausibility), and we have consistently found questionable or flat out incorrect cases in these changes. Most of them are probably correct, but we need to devise a system that makes it more clear when we have handled the address space concerns correctly, and ideally each pass that gets updated would receive an accompanying test case that exercises that pass specificaly w.r.t. alternate address spaces. However, from this commit, I have retained the new C API entry points. Those were an orthogonal change that probably should have been split apart, but they seem entirely good. In several places the changes were very obvious cleanups with no actual multiple address space code added; these I have not reverted when I spotted them. In a few other places there were merge conflicts due to a cleaner solution being implemented later, often not using address spaces at all. In those cases, I've preserved the new code which isn't address space dependent. This is part of my ongoing effort to clean out the partial address space code which carries high risk and low test coverage, and not likely to be finished before the 3.2 release looms closer. Duncan and I would both like to see the above issues addressed before we return to these changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167222 91177308-0d34-0410-b5e6-96231b3b80d8
* (For X86) Enhancement to add-carray/sub-borrow (adc/sbb) optimization.Shuxin Yang2012-10-31
| | | | | | | | | | | | | The adc/sbb optimization is to able to convert following expression into a single adc/sbb instruction: (ult) ... = x + 1 // where the ult is unsigned-less-than comparison (ult) ... = x - 1 This change is to flip the "x >u y" (i.e. ugt comparison) in order to expose the adc/sbb opportunity. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167180 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up redundant SP register maintained in X86 TLIMichael Liao2012-10-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167104 91177308-0d34-0410-b5e6-96231b3b80d8
* X86 MMX: optimize transfer from mmx to i32Manman Ren2012-10-30
| | | | | | | | | | We used to generate a store (movq) + a load. Now we use movd. rdar://9946746 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167056 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit r166971. I reverted it to quickly, when buildbots didn't have a chanceJakub Staszak2012-10-30
| | | | | | | to test it with chapni's fix (-mattr=+avx). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166985 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r166971. It causes buildbot failure. To be investigated.Jakub Staszak2012-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166979 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused variable.Jakub Staszak2012-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166973 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify code. No functionality change.Jakub Staszak2012-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166972 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow to fold vector load if there is more than one bitcast, so in the case:Jakub Staszak2012-10-29
| | | | | | | | | | | | | | | | | | | | %0 = load <8 x i16>* %dest %1 = shufflevector <8 x i16> %0, <8 x i16> %in, <8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14> store <8 x i16> %1, <8 x i16>* %dest We get: vmovlpd (%eax), %xmm0, %xmm0 instead of: vmovaps (%eax), %xmm1 vmovsd %xmm1, %xmm0, %xmm0 No extra test-case is added. I just fixed the existing one (also it uses FileCheck now). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166971 91177308-0d34-0410-b5e6-96231b3b80d8
* Silence a GCC warning about comparing signed and unsigned types.Duncan Sands2012-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166922 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up where SlotSize should be used instead of pointer size.Michael Liao2012-10-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166664 91177308-0d34-0410-b5e6-96231b3b80d8
* Add custom conversion from v2u32 to v2f32 in 32-bit modeMichael Liao2012-10-24
| | | | | | | | | - As there's no 64-bit GPRs in 32-bit mode, a custom conversion from v2u32 to v2f32 is added to improve the efficiency of the code generated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166545 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR14161Michael Liao2012-10-23
| | | | | | | | | - Check index being extracted to be constant 0 before simplfiying. Otherwise, retain the original sequence. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166504 91177308-0d34-0410-b5e6-96231b3b80d8
* Silence -Wsign-compareMatt Beaumont-Gay2012-10-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166494 91177308-0d34-0410-b5e6-96231b3b80d8
* Add custom UINT_TO_FP from v4i8/v4i16/v8i8/v8i16 to v4f32/v8f32Michael Liao2012-10-23
| | | | | | | | | | - Replace v4i8/v8i8 -> v8f32 DAG combine with custom lowering to reduce DAG combine overhead. - Extend the support to v4i16/v8i16 as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166487 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable lowering ZERO_EXTEND/ANY_EXTEND to PMOVZX from SSE4.1Michael Liao2012-10-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166486 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch is to fix radar://8426430. It is about llvm support of ↵Shuxin Yang2012-10-19
| | | | | | | | | | | | | | | | | | | | | | | | __builtin_debugtrap() which is supposed to consistently raise SIGTRAP across all systems. In contrast, __builtin_trap() behave differently on different systems. e.g. it raises SIGTRAP on ARM, and SIGILL on X86. The purpose of __builtin_debugtrap() is to consistently provide "trap" functionality, in the mean time preserve the compatibility with on gcc on __builtin_trap(). The X86 backend is already able to handle debugtrap(). This patch is to: 1) make front-end recognize "__builtin_debugtrap()" (emboddied in the one-line change to Clang). 2) In DAG legalization phase, by default, "debugtrap" will be replaced with "trap", which make the __builtin_debugtrap() "available" to all existing ports without the hassle of changing their code. 3) If trap-function is specified (via -trap-func=xyz to llc), both __builtin_debugtrap() and __builtin_trap() will be expanded into the function call of the specified trap function. This behavior may need change in the future. The provided testing-case is to make sure 2) and 3) are working for ARM port, and we already have a testing case for x86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166300 91177308-0d34-0410-b5e6-96231b3b80d8
* Lower BUILD_VECTOR to SHUFFLE + INSERT_VECTOR_ELT for X86Michael Liao2012-10-19
| | | | | | | | | | | - If INSERT_VECTOR_ELT is supported (above SSE2, either by custom sequence of legal insn), transform BUILD_VECTOR into SHUFFLE + INSERT_VECTOR_ELT if most of elements could be built from SHUFFLE with few (so far 1) elements being inserted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166288 91177308-0d34-0410-b5e6-96231b3b80d8
* Check SSSE3 instead of SSE4.1Michael Liao2012-10-17
| | | | | | | | - All shuffle insns required, especially PSHUB, are added in SSSE3. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166086 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix setjmp on models with non-Small code model nor non-Static relocation modelMichael Liao2012-10-17
| | | | | | | | | | | | - MBB address is only valid as an immediate value in Small & Static code/relocation models. On other models, LEA is needed to load IP address of the restore MBB. - A minor fix of MBB in MC lowering is added as well to enable target relocation flag being propagated into MC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166084 91177308-0d34-0410-b5e6-96231b3b80d8
* Support v8f32 to v8i8/vi816 conversion through custom loweringMichael Liao2012-10-16
| | | | | | | | | | - Add custom FP_TO_SINT on v8i16 (and v8i8 which is legalized as v8i16 due to vector element-wise widening) to reduce DAG combiner and its overhead added in X86 backend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166036 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r165661, Patch by Shuxin Yang <shuxin.llvm@gmail.com>.NAKAMURA Takumi2012-10-16
| | | | | | | | | | | | | | | | | | | | | | | Original message: The attached is the fix to radar://11663049. The optimization can be outlined by following rules: (select (x != c), e, c) -> select (x != c), e, x), (select (x == c), c, e) -> select (x == c), x, e) where the <c> is an integer constant. The reason for this change is that : on x86, conditional-move-from-constant needs two instructions; however, conditional-move-from-register need only one instruction. While the LowerSELECT() sounds to be the most convenient place for this optimization, it turns out to be a bad place. The reason is that by replacing the constant <c> with a symbolic value, it obscure some instruction-combining opportunities which would otherwise be very easy to spot. For that reason, I have to postpone the change to last instruction-combining phase. The change passes the test of "make check-all -C <build-root/test" and "make -C project/test-suite/SingleSource". Original message since r165661: My previous change has a bug: I negated the condition code of a CMOV, and go ahead creating a new CMOV using the *ORIGINAL* condition code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166017 91177308-0d34-0410-b5e6-96231b3b80d8
* Add __builtin_setjmp/_longjmp supprt in X86 backendMichael Liao2012-10-15
| | | | | | | | | | | | | - Besides used in SjLj exception handling, __builtin_setjmp/__longjmp is also used as a light-weight replacement of setjmp/longjmp which are used to implementation continuation, user-level threading, and etc. The support added in this patch ONLY addresses this usage and is NOT intended to support SjLj exception handling as zero-cost DWARF exception handling is used by default in X86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165989 91177308-0d34-0410-b5e6-96231b3b80d8
* Resubmit the changes to llvm core to update the functions to support ↵Micah Villmow2012-10-15
| | | | | | different pointer sizes on a per address space basis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165941 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Fix accidentally swapped operands.Benjamin Kramer2012-10-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165871 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Promote i8 cmov when both operands are coming from truncates of the ↵Benjamin Kramer2012-10-13
| | | | | | | | | | | | | | same width. X86 doesn't have i8 cmovs so isel would emit a branch. Emitting branches at this level is often not a good idea because it's too late for many optimizations to kick in. This solution doesn't add any extensions (truncs are free) and tries to avoid introducing partial register stalls by filtering direct copyfromregs. I'm seeing a ~10% speedup on reading a random .png file with libpng15 via graphicsmagick on x86_64/westmere, but YMMV depending on the microarchitecture. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165868 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 165732 for further review.Micah Villmow2012-10-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165747 91177308-0d34-0410-b5e6-96231b3b80d8
* Add in the first iteration of support for llvm/clang/lldb to allow variable ↵Micah Villmow2012-10-11
| | | | | | per address space pointer sizes to be optimized correctly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165726 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r165661, "Patch by Shuxin Yang <shuxin.llvm@gmail.com>."NAKAMURA Takumi2012-10-11
| | | | | | It broke stage2 clang and test-suite/MultiSource/Benchmarks/mediabench/g721/g721encode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165692 91177308-0d34-0410-b5e6-96231b3b80d8
* Change MachineInstrBuilder::addDisp to copy over target flags by default.Evan Cheng2012-10-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165677 91177308-0d34-0410-b5e6-96231b3b80d8
* Patch by Shuxin Yang <shuxin.llvm@gmail.com>.Nadav Rotem2012-10-10
| | | | | | | | | | | | | | | | | | | | | Original message: The attached is the fix to radar://11663049. The optimization can be outlined by following rules: (select (x != c), e, c) -> select (x != c), e, x), (select (x == c), c, e) -> select (x == c), x, e) where the <c> is an integer constant. The reason for this change is that : on x86, conditional-move-from-constant needs two instructions; however, conditional-move-from-register need only one instruction. While the LowerSELECT() sounds to be the most convenient place for this optimization, it turns out to be a bad place. The reason is that by replacing the constant <c> with a symbolic value, it obscure some instruction-combining opportunities which would otherwise be very easy to spot. For that reason, I have to postpone the change to last instruction-combining phase. The change passes the test of "make check-all -C <build-root/test" and "make -C project/test-suite/SingleSource". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165661 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for FP_ROUND from v2f64 to v2f32Michael Liao2012-10-10
| | | | | | | | | | | | - Due to the current matching vector elements constraints in ISD::FP_ROUND, rounding from v2f64 to v4f32 (after legalization from v2f32) is scalarized. Add a customized v2f32 widening to convert it into a target-specific X86ISD::VFPROUND to work around this constraints. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165631 91177308-0d34-0410-b5e6-96231b3b80d8
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