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2012-10-11Revert 165732 for further review.Micah Villmow
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165747 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11Add in the first iteration of support for llvm/clang/lldb to allow variable ↵Micah Villmow
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
2012-10-10Add a new interface to allow IR-level passes to access codegen-specific ↵Nadav Rotem
information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165665 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-10Pass into the AttributeWithIndex::get method an ArrayRef of attributeBill Wendling
enums. These are then created via the correct Attributes creation method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165607 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-10Have 'addFnAttr' take the attribute enum value. Then have it build the ↵Bill Wendling
attribute object and add it appropriately. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165595 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-08Move TargetData to DataLayout.Micah Villmow
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165402 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-04This patch corrects commit 165126 by using an integer bit width instead of Preston Gurd
a pointer to a type, in order to remove the uses of getGlobalContext(). Patch by Tyler Nowicki. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165255 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-04SimplifyCFG: Enhance the "remove CFG edge that leads to null pointer ↵Benjamin Kramer
dereference" optimization to also handle instructions with multiple uses. We conservatively only check the first use to avoid walking long use chains. This catches the common case of having both a load and a store to a pointer supplied by a PHI node. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165232 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-03This Patch corrects a problem whereby the optimization to use a faster dividePreston Gurd
instruction (for Intel Atom) was not being done by Clang, because the type context used by Clang is not the default context. It fixes the problem by getting the global context types for each div/rem instruction in order to compare them against the types in the BypassTypeMap. Tests for this will be done as a separate patch to Clang. Patch by Tyler Nowicki. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165126 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-01SimplifyCFG: Don't crash when forming a switch bitmap with an undef default ↵Benjamin Kramer
value. Fixes PR13985. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164934 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-30SimplifyCFG: Enumerating all predecessors of a BB can be expensive ↵Benjamin Kramer
(switches), avoid it if possible. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164923 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Fix a integer overflow in SimplifyCFG's look up table formation logic.Benjamin Kramer
If the width is very large it gets truncated from uint64_t to uint32_t when passed to TD->fitsInLegalInteger. The truncated value can fit in a register. This manifested in massive memory usage or crashes (PR13946). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164784 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. ↵Sylvestre Ledru
See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Fix a typo 'iff' => 'if'Sylvestre Ledru
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164767 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Address Duncan's comments on r164684:Hans Wennborg
- Put statistics in alphabetical order - Don't use getZextValue when building TableInt, just use APInts - Introduce Create{Z,S}ExtOrTrunc in IRBuilder. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164696 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Address Duncan's comments on r164682:Hans Wennborg
- Finish assert messages with exclamation mark - Move overflow checking into ShouldBuildLookupTable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164692 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26SimplifyCFG: Make the switch-to-lookup table transformation store theHans Wennborg
tables in bitmaps when they fit in a target-legal register. This saves some space, and it also allows for building tables that would otherwise be deemed too sparse. One interesting case that this hits is example 7 from http://blog.regehr.org/archives/320. We currently generate good code for this when lowering the switch to the selection DAG: we build a bitmask to decide whether to jump to one block or the other. My patch will result in the same bitmask, but it removes the need for the jump, as the return value can just be retrieved from the mask. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164684 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26SimplifyCFG: Refactor the switch-to-lookup table transformation byHans Wennborg
breaking out the building of lookup tables into a separate class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164682 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Rename virtual table anchors from Anchor() to anchor() for consistency with ↵Craig Topper
the rest of the tree. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164666 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Expansions for u/srem, using the udiv expansion. More unit tests for udiv ↵Michael Ilseman
and u/srem. Fixed issue with Release build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164654 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Revert r164614 to appease the buildbots.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164627 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Expansions for u/srem, using the udiv expansion. More unit tests for udiv ↵Michael Ilseman
and u/srem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164614 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20SimplifyCFG: sink common codes from IF, ELSE blocks down to END block.Manman Ren
We already have HoistThenElseCodeToIf, this patch implements SinkThenElseCodeToEnd. When END block has only two predecessors and each predecessor terminates with unconditional branches, we compare instructions in IF and ELSE blocks backwards and check whether we can sink the common instructions down. rdar://12191395 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19Renaming functions to match coding style guidelinesMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164238 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19Doxygen-ify commentsMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164235 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19Put the * and & next to the variable, rather than the type.Michael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164232 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19SimplifyCFG: Don't generate invalid code for switch used to initializeHans Wennborg
two variables where the first variable is returned and the second ignored. I don't think this occurs in practice (other passes should have cleaned up the unused phi node), but it should still be handled correctly. Also make the logic for determining if we should return early less sketchy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164225 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19IntegerDivision: Style cleanups, avoid warning about mixing || and && ↵Benjamin Kramer
without parens. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164216 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18New utility for expanding integer division for targets that don't support it.Michael Ilseman
Implementation derived from compiler-rt's implementation of signed and unsigned integer division. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164173 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18PGO: preserve branch-weight metadata when simplifying Switch to a sub, an icmpManman Ren
and a conditional branch; also when removing dead cases from a switch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164084 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17PGO: preserve branch-weight metadata when simplifying SwitchManman Ren
Hanlde the case when we split the default edge if the default target has "icmp" and unconditinal branch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164076 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17PGO: preserve branch-weight metadata when simplifying SwitchOnSelect.Manman Ren
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164068 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17PGO: preserve branch-weight metadata when simplifying two branches with a commonManman Ren
destination in SimplifyCondBranchToCondBranch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164054 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17Fix a few vars that can end up being used without initialization.Axel Naumann
The cases where no initialization happens should still be checked for logic flaws. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164032 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15PGO: preserve branch-weight metadata when simplifying two branches with a commonManman Ren
destination. Updated previous implementation to fix a case not covered: // PBI: br i1 %x, TrueDest, BB // BI: br i1 %y, TrueDest, FalseDest The other case was handled correctly. // PBI: br i1 %x, BB, FalseDest // BI: br i1 %y, TrueDest, FalseDest Also tried to use 64-bit arithmetic instead of APInt with scale to simplify the computation. Let me know if you have other opinions about this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163954 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14PGO: preserve branch-weight metadata when simplifying a switch with a singleManman Ren
case to a conditional branch and when removing dead cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163942 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14Stylistic and 80-col fixesEvan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163940 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14Review feedback from Duncan Sands. Alphabetize includes and simplifyAlex Rosenberg
lit config. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163928 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14Try to fix the bots by detecting inconsistant branch-weight metadata.Manman Ren
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163926 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14PGO: preserve branch-weight metadata when merging two switches whereManman Ren
the default target of the first switch is not the basic block the second switch is in (PredDefault != BB). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163916 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12PGO: preserve branch-weight metadata when removing a case which jumpsManman Ren
to the default target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163724 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-12Release build: guard dump functions withManman Ren
"#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)" No functional change. Update r163344. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163679 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11SimplifyCFG: preserve branch-weight metadata when creating a new switch fromManman Ren
a pair of switch/branch where both depend on the value of the same variable and the default case of the first switch/branch goes to the second switch/branch. Code clean up and fixed a few issues: 1> handling the case where some cases of the 2nd switch are invalidated 2> correctly calculate the weight for the 2nd switch when it is a conditional eq Testing case is modified from Alastair's original patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163635 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11llvm/lib/Transforms/Utils/CMakeLists.txt: Update.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163593 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Add a pass that renames everything with metasyntatic names. This works well ↵Alex Rosenberg
after using bugpoint to reduce the confusion presented by the original names, which no longer mean what they used to. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163592 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Move bypassSlowDivision into the llvm namespace.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163503 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Fix style issues from r163302 pointed out by Evan.Hans Wennborg
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163491 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-08Remove an incorrect assert during branch weight propagation.Andrew Trick
Patch and test case by Alastair Murray! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163437 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07SimplifyCFG: ValidLookupTableConstant should be staticHans Wennborg
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163378 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-06Release build: guard dump functions with "ifndef NDEBUG"Manman Ren
No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163344 91177308-0d34-0410-b5e6-96231b3b80d8
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