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path: root/lib/Target/PTX/PTXISelLowering.cpp
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2012-05-24Remove the PTX back-end and all of its artifacts (triple, etc.)Justin Holewinski
This back-end was deprecated in favor of the NVPTX back-end. NV_CONTRIB git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157417 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-20Convert more uses of XXXRegisterClass to &XXXRegClass. No functional change ↵Craig Topper
since they are equivalent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155188 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-24PTX: Fix predicate logic bugJustin Holewinski
Code such as: %vreg100 = setcc %vreg10, -1, SETNE brcond %vreg10, %tgt was being incorrectly morphed into %vreg100 = and %vreg10, 1 brcond %vreg10, %tgt where the 'and' instruction could be eliminated since such logic is on 1-bit types in the PTX back-end, leaving us with just: brcond %vreg10, %tgt which essentially gives us inverted branch conditions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153364 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-17Reorder includes in Target backends to following coding standards. Remove ↵Craig Topper
some superfluous forward declarations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152997 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Re-commit r151623 with fix. Only issue special no-return calls if it's a ↵Evan Cheng
direct call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151645 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Revert r151623 "Some ARM implementaions, e.g. A-series, does return stack ↵Daniel Dunbar
prediction. ...", it is breaking the Clang build during the Compiler-RT part. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151630 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Some ARM implementaions, e.g. A-series, does return stack prediction. That is,Evan Cheng
the processor keeps a return addresses stack (RAS) which stores the address and the instruction execution state of the instruction after a function-call type branch instruction. Calling a "noreturn" function with normal call instructions (e.g. bl) can corrupt RAS and causes 100% return misprediction so LLVM should use a unconditional branch instead. i.e. mov lr, pc b _foo The "mov lr, pc" is issued in order to get proper backtrace. rdar://8979299 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151623 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22Make all pointers to TargetRegisterClass const since they are all pointers ↵Craig Topper
to static data that should not be modified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151134 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20More dead code removal (using -Wunreachable-code)David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-06PTX: Continue to fix up the register mess.Justin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145947 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14PTX: Let LLVM use loads/stores for all mem* intrinsics, instead of relying ↵Justin Holewinski
on custom implementations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144551 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11allow non-device function calls in PTX when natively handling device-side printfDan Bailey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144388 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-09PTX: Print .ptr kernel attributes if PTX version >= 2.2Justin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141508 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05PTX: Fixup a case where getRegClassFor() should be used instead of custom code.Justin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141199 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05Remove a bunch of unused variables in the PTX backend (warned about by gcc-4.6).Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141182 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28PTX: MC-ize the PTX back-end (patch 1 of N)Justin Holewinski
Lay some groundwork for converting to MC-based asm printer. This is the first of probably many patches to bring the back-end back up-to-date with all of the recent MC changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140697 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28PTX: Simplify code. No functionality change.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140680 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28PTX: Pass param name strings per const reference.Benjamin Kramer
The copies caused use-after-free bugs on std::string implementations without COW (i.e. anything but libstdc++) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140679 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-27PTX: Use external symbols to keep track of params and locals. This also fixesJustin Holewinski
a couple of outstanding issues with frame objects occuring as instruction operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140616 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23PTX: Cleanup unused code in PTXMachineFunctionInfoJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140390 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23PTX: Handle function call return valuesJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140386 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23PTX: Start fixing function callsJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140378 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23PTX: Generalize handling of .param typesJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140375 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-22PTX: Remove physical register defsJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140310 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-22PTX: Use .param space for device function return values on SM 2.0+, and attemptJustin Holewinski
to fix up parameter passing on SM < 2.0 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140309 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-22PTX: Fix style issuesJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140308 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Add codegen support for vector select (in the IR this means a selectDuncan Sands
with a vector condition); such selects become VSELECT codegen nodes. This patch also removes VSETCC codegen nodes, unifying them with SETCC nodes (codegen was actually often using SETCC for vector SETCC already). This ensures that various DAG combiner optimizations kick in for vector comparisons. Passes dragonegg bootstrap with no testsuite regressions (nightly testsuite as well as "make check-all"). Patch mostly by Nadav Rotem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139159 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-12Silence a bunch (but not all) "variable written but not read" warningsDuncan Sands
when building with assertions disabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137460 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-09PTX: Add initial support for device function callsJustin Holewinski
- Calls are supported on SM 2.0+ for function with no return values git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137125 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-02Remove unused array.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134323 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-25PTX: Reverting implementation of i8.Dan Bailey
The .b8 operations in PTX are far more limiting than I first thought. The mov operation isn't even supported, so there's no way of converting a .pred value into a .b8 without going via .b16, which is not sensible. An improved implementation needs to use the fact that loads and stores automatically extend and truncate to implement support for EXTLOAD and TRUNCSTORE in order to correctly support boolean values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133873 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24PTX: Add support for i8 type and introduce associated .b8 registersDan Bailey
The i8 type is required for boolean values, but can only use ld, st and mov instructions. The i1 type continues to be used for predicates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24PTX: Re-work target sm/compute selection and add some basic GPUJustin Holewinski
targets: g80, gt200, gf100(fermi) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133799 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23PTX: Always use registers for return values, but use .param space for deviceJustin Holewinski
parameters if SM >= 2.0 - Update test cases to be more robust against register allocation changes - Bump up the number of registers to 128 per type - Include Python script to re-generate register file with any number of registers git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133736 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23PTX: Whitespace fixes and remove commented out codeJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133734 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23PTX: Prevent DCE from eliminating st.param calls, and unify the handling ofJustin Holewinski
st.param and ld.param FIXME: Test cases still need to be updated git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133733 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23PTX: Use .param space for parameters in device functions for SM >= 2.0Justin Holewinski
FIXME: DCE is eliminating the final st.param.x calls, figure out why git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133732 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16PTX: Finish new calling convention implementationJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133172 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16PTX: Rename register classes for readability and combine int and fp registersJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133171 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16PTX: Fix whitespace errorsJustin Holewinski
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133158 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Make the logic for determining function alignment more explicit. No ↵Eli Friedman
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131012 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28PTX: support for select_cc and fixes for setccJustin Holewinski
- expansion of SELECT_CC into SETCC - force SETCC result type to i1 - custom selection for handling i1 using SETCC Patch by Dan Bailey git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130358 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28PTX: support for zext loads and trunc storesJustin Holewinski
- expansion of EXTLOAD and TRUNCSTORE instructions Patch by Dan Bailey git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130354 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-28ptx: clean up branch code a bitChe-Liang Chiou
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128405 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-23PTX: Improve support for 64-bit addressingJustin Holewinski
- Fix bug in ADDRrr/ADDRri/ADDRii selection for 64-bit addresses - Add comparison selection for i64 - Add zext selection for i32 -> i64 - Add shl/shr/sha support for i64 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128153 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18PTX: Fix various codegen issuesJustin Holewinski
- Emit mad instead of mad.rn for shader model 1.0 - Emit explicit mov.u32 instructions for reading global variables - (most PTX instructions cannot take global variable immediates) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127895 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18ptx: add unconditional and conditional branchChe-Liang Chiou
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127873 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-15Avoid a compiler warning about reg possibly being used uninitializedDuncan Sands
when building with assertions disabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127675 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Extend initial support for primitive types in PTX backendChe-Liang Chiou
- Allow i16, i32, i64, float, and double types, using the native .u16, .u32, .u64, .f32, and .f64 PTX types. - Allow loading/storing of all primitive types. - Allow primitive types to be passed as parameters. - Allow selection of PTX Version and Shader Model as sub-target attributes. - Merge integer/floating-point test cases for load/store. - Use .u32 instead of .s32 to conform to output from NVidia nvcc compiler. Patch by Justin Holewinski git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126824 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Add preliminary support for .f32 in the PTX backend.Che-Liang Chiou
- Add appropriate TableGen patterns for fadd, fsub, fmul. - Add .f32 as the PTX type for the LLVM float type. - Allow parameters, return values, and global variable declarations to accept the float type. - Add appropriate test cases. Patch by Justin Holewinski git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126636 91177308-0d34-0410-b5e6-96231b3b80d8
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