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2012-07-17llvm/test/Transforms/LoopRotate/PhiRename-1.ll: FileCheck-ize. It fixes PR13301.NAKAMURA Takumi
It began choking since Chandler's r159547, possibly due to improper expression on grep from TclParser to ShParser. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160367 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-16fix PR13339 (remove the predecessor from the unwind BB when removing an invoke)Nuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-13LSR Fix: check SCEV expression safety before expansion.Andrew Trick
All SCEV expressions used by LSR formulae must be safe to expand. i.e. they may not contain UDiv unless we can prove nonzero denominator. Fixes PR11356: LSR hoists UDiv. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160205 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-12Instcombine was transforming:Evan Cheng
%shr = lshr i64 %key, 3 %0 = load i64* %val, align 8 %sub = add i64 %0, -1 %and = and i64 %sub, %shr ret i64 %and to: %shr = lshr i64 %key, 3 %0 = load i64* %val, align 8 %sub = add i64 %0, 2305843009213693951 %and = and i64 %sub, %shr ret i64 %and The demanded bit optimization is actually a pessimization because add -1 would be codegen'ed as a sub 1. Teach the demanded constant shrinking optimization to check for negated constant to make sure it is actually reducing the width of the constant. rdar://11793464 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160101 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-09instcombine: merge the functions that remove dead allocas and dead ↵Nuno Lopes
mallocs/callocs/... This patch removes ~70 lines in InstCombineLoadStoreAlloca.cpp and makes both functions a bit more aggressive than before :) In theory, we can be more aggressive when removing an alloca than a malloc, because an alloca pointer should never escape, but we are not taking advantage of this anyway git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159952 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06teach instcombine to remove allocated buffers even if there are stores, ↵Nuno Lopes
memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159876 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03BoundsChecking: optimize out the check for offset < 0 if size is known to ↵Nuno Lopes
be >= 0 (signed). (LLVM optimizers cannot do this optimization by themselves) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159668 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02Revert "IntRange:" as it appears to be breaking self hosting.Eric Christopher
This reverts commit b2833d9dcba88c6f0520cad760619200adc0442c. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159618 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02Fix the remaining TCL-style quotes found in the testsuite. This isChandler Carruth
another mechanical change accomplished though the power of terrible Perl scripts. I have manually switched some "s to 's to make escaping simpler. While I started this to fix tests that aren't run in all configurations, the massive number of tests is due to a really frustrating fragility of our testing infrastructure: things like 'grep -v', 'not grep', and 'expected failures' can mask broken tests all too easily. Essentially, I'm deeply disturbed that I can change the testsuite so radically without causing any change in results for most platforms. =/ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159547 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02GlobalOpt forgot to handle bitcast when analyzing globals. Found by inspection.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159546 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02Convert the uses of '|&' to use '2>&1 |' instead, which works on oldChandler Carruth
versions of Bash. In addition, I can back out the change to the lit built-in shell test runner to support this. This should fix the majority of fallout on Darwin, but I suspect there will be a few straggling issues. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159544 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02fix the regression I introduced in r159385 (it's necessary to update PHI ↵Nuno Lopes
nodes in unwind BB git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159534 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02IntRange:Stepan Dyatkovskiy
- Changed isSingleNumber method behaviour. Now this flag is calculated on demand. IntegersSubsetMapping - Optimized diff operation. - Replaced type of Items field from std::list with std::map. - Added new methods: bool isOverlapped(self &RHS) void add(self& RHS, SuccessorClass *S) void detachCase(self& NewMapping, SuccessorClass *Succ) void removeCase(SuccessorClass *Succ) SuccessorClass *findSuccessor(const IntTy& Val) const IntTy* getCaseSingleNumber(SuccessorClass *Succ) IntegersSubsetTest - DiffTest: Added checks for successors. SimplifyCFG Updated SwitchInst usage (now it is case-ragnes compatible) for - SimplifyEqualityComparisonWithOnlyPredecessor - FoldValueComparisonIntoPredecessors git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159527 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02Convert all tests using TCL-style quoting to use shell-style quoting.Chandler Carruth
This was done through the aid of a terrible Perl creation. I will not paste any of the horrors here. Suffice to say, it require multiple staged rounds of replacements, state carried between, and a few nested-construct-parsing hacks that I'm not proud of. It happens, by luck, to be able to deal with all the TCL-quoting patterns in evidence in the LLVM test suite. If anyone is maintaining large out-of-tree test trees, feel free to poke me and I'll send you the steps I used to convert things, as well as answer any painful questions etc. IRC works best for this type of thing I find. Once converted, switch the LLVM lit config to use ShTests the same as Clang. In addition to being able to delete large amounts of Python code from 'lit', this will also simplify the entire test suite and some of lit's architecture. Finally, the test suite runs 33% faster on Linux now. ;] For my 16-hardware-thread (2x 4-core xeon e5520): 36s -> 24s git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159525 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29Fix a reassociate crash on sozefx when compiling with dragonegg+gcc-4.7 due toDuncan Sands
the optimizers producing a multiply expression with more multiplications than the original (!). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159426 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28make simplifyCFG erase invokes to readonly/readnone functionsNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159385 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28make instcombine produce calls to llvm.donothing instead of a random intrinsicNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159384 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28make LazyValueInfo analyze the default case of switch statements (we know ↵Nuno Lopes
that in the default branch the value cannot be any of the switch cases) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159353 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Allow BBVectorize to form non-2^n-length vectors.Hal Finkel
The original algorithm only used recursive pair fusion of equal-length types. This is now extended to allow pairing of any types that share the same underlying scalar type. Because we would still generally prefer the 2^n-length types, those are formed first. Then a second set of iterations form the non-2^n-length types. Also, a call to SimplifyInstructionsInBlock has been added after each pairing iteration. This takes care of DCE (and a few other things) that make the following iterations execute somewhat faster. For the same reason, some of the simple shuffle-combination cases are now handled internally. There is some additional refactoring work to be done, but I've had many requests for this feature, so additional refactoring will come soon in future commits (as will additional test cases). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159330 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28make LVI::getEdgeValue() always intersect the constraints of the edge with ↵Nuno Lopes
the range of the block. Previously it was only performing the intersection for a few cases, thus losing precision git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159320 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-27Revert r159136 due to PR13124.Matt Beaumont-Gay
Original commit message: If a constant or a function has linkonce_odr linkage and unnamed_addr, mark it hidden. Being linkonce_odr guarantees that it is available in every dso that needs it. Being a constant/function with unnamed_addr guarantees that the copies don't have to be merged. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159272 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-27Some reassociate optimizations create new instructions, which they insert justDuncan Sands
before the expression root. Any existing operators that are changed to use one of them needs to be moved between it and the expression root, and recursively for the operators using that one. When I rewrote RewriteExprTree I accidentally inverted the logic, resulting in the compacting going down from operators to operands rather than up from operands to the operators using them, oops. Fix this, resolving PR12963. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159265 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Remove a instcombine transform that (no longer?) makes sense:Evan Cheng
// C - zext(bool) -> bool ? C - 1 : C if (ZExtInst *ZI = dyn_cast<ZExtInst>(Op1)) if (ZI->getSrcTy()->isIntegerTy(1)) return SelectInst::Create(ZI->getOperand(0), SubOne(C), C); This ends up forming sext i1 instructions that codegen to terrible code. e.g. int blah(_Bool x, _Bool y) { return (x - y) + 1; } => movzbl %dil, %eax movzbl %sil, %ecx shll $31, %ecx sarl $31, %ecx leal 1(%rax,%rcx), %eax ret Without the rule, llvm now generates: movzbl %sil, %ecx movzbl %dil, %eax incl %eax subl %ecx, %eax ret It also helps with ARM (and pretty much any target that doesn't have a sext i1 :-). The transformation was done as part of Eli's r75531. He has given the ok to remove it. rdar://11748024 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159230 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Replacing zero-sized alloca's with a null pointer is too aggressive, insteadDuncan Sands
merge all zero-sized alloca's into one, fixing c43204g from the Ada ACATS conformance testsuite. What happened there was that a variable sized object was being allocated on the stack, "alloca i8, i32 %size". It was then being passed to another function, which tested that the address was not null (raising an exception if it was) then manipulated %size bytes in it (load and/or store). The optimizers cleverly managed to deduce that %size was zero (congratulations to them, as it isn't at all obvious), which made the alloca zero size, causing the optimizers to replace it with null, which then caused the check mentioned above to fail, and the exception to be raised, wrongly. Note that no loads and stores were actually being done to the alloca (the loop that does them is executed %size times, i.e. is not executed), only the not-null address check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159202 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Enable the new LoopInfo algorithm by default.Andrew Trick
The primary advantage is that loop optimizations will be applied in a stable order. This helps debugging and unit test creation. It is also a better overall implementation without pathologically bad performance on deep functions. On large functions (llvm-stress --size=200000 | opt -loops) Before: 0.1263s After: 0.0225s On deep functions (after tweaking llvm-stress, thanks Nadav): Before: 0.2281s After: 0.0227s See r158790 for more comments. The loop tree is now consistently generated in forward order, but loop passes are applied in reverse order over the program. If we have a loop optimization that prefers forward order, that can easily be achieved by adding a different type of LoopPassManager. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159183 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25revert my previous commit (r159173), since as Eli pointed out, it's ↵Nuno Lopes
perfectly ok to mark realloc as noalias git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159175 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25do not set realloc() as NotAlias, since it can return the same pointer. This ↵Nuno Lopes
whole thing should be upgraded to use the MemoryBuiltin interface anyway.. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159173 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Fix the objc_autoreleasedReturnValue optimization code to locateDan Gohman
the call correctly even in the case where it is an invoke. This fixes rdar://11714057. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159157 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25improve optimization of invoke instructions:Nuno Lopes
- simplifycfg: invoke undef/null -> unreachable - instcombine: invoke new -> invoke expect(0, 0) (an arbitrary NOOP intrinsic; only done if the allocated memory is unused, of course) - verifier: allow invoke of intrinsics (to make the previous step work) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159146 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25If a constant or a function has linkonce_odr linkage and unnamed_addr, mark itRafael Espindola
hidden. Being linkonce_odr guarantees that it is available in every dso that needs it. Being a constant/function with unnamed_addr guarantees that the copies don't have to be merged. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159136 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Allow controlling vectorization of boolean values separately from other ↵Hal Finkel
integer types. These are used as the result of comparisons, and often handled differently from larger integer types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159111 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Remove dyn_cast + dereference pattern by replacing it with a cast and changingNick Lewycky
the safety check to look for the same type we're going to actually cast to. Fixes PR13180! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159110 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Remove a dangling reference to a deleted instruction. Fixes PR13185!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159096 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-23Allow BBVectorize to fuse compare instructions.Hal Finkel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159088 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22Revert remaining part of r93200: "Disable folding sext(trunc(x)) -> x"Jakob Stoklund Olesen
This fixes PR5997. These transforms were disabled because codegen couldn't deal with other uses of trunc(x). This is now handled by the peephole pass. This causes no regressions on x86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159003 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21instcombine: disable optimization of 'invoke null/undef'. I'll move this ↵Nuno Lopes
functionality to SimplifyCFG (since we cannot make changes to the CFG here). Fixes the crashes with the attached test case git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158951 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21Look pass zext to strength reduce an udiv. Patch by David Majnemer. ↵Evan Cheng
rdar://11721329 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158946 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21Add support for invoke to the MemoryBuiltin analysid.Nuno Lopes
Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158937 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21hopefully fix the buildbots: some tests have wrong definitions of malloc ↵Nuno Lopes
and were crashing this code on 64 bits machines git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158923 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21port the BoundsChecking patch to the new MemoryBuiltin API (i.e., remove ↵Nuno Lopes
most of the code from here). Remove the alloc_size.ll test until we settle on a metadata format that makes everyone happy.. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158920 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21refactor the MemoryBuiltin analysis:Nuno Lopes
- provide more extensive set of functions to detect library allocation functions (e.g., malloc, calloc, strdup, etc) - provide an API to compute the size and offset of an object pointed by Move a few clients (GVN, AA, instcombine, ...) to the new API. This implementation is a lot more aggressive than each of the custom implementations being replaced. Patch reviewed by Nick Lewycky and Chandler Carruth, thanks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158919 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-17Now that SROA can form alloca's for dynamic vector accesses, further improve ↵Pete Cooper
it to be able to replace operations on these vector alloca's with insert/extract element insts git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158623 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-16Teach BBVectorize to combine, when possible, or discard metadata when fusing ↵Hal Finkel
instructions. The present implementation handles only TBAA and FP metadata, discarding everything else. For debug metadata, the current behavior is maintained (the debug metadata associated with one of the instructions will be kept, discarding that attached to the other). This should address PR 13040. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158606 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-16Fix crash from r158529 on Bullet.Pete Cooper
Dynamic GEPs created by SROA needed to insert extra "i32 0" operands to index through structs and arrays to get to the vector being indexed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158590 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-15Unit test for LSR kind=Special fix: r158536.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158570 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-15Allow SROA to split up an array of vectors into multiple vectors, even when ↵Pete Cooper
the vectors are dynamically indexed git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158529 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-15Some optimizations done by globalopt are safe only for internal linkage, notRafael Espindola
linkonce linkage. For example, it is not valid to add unnamed_addr. This also fixes a crash in g++.dg/opt/static5.C. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158528 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-15Fix issues (infinite loop and/or crash) with self-referential instructions, forDuncan Sands
example degenerate phi nodes and binops that use themselves in unreachable code. Thanks to Charles Davis for the testcase that uncovered this can of worms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158508 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-14Recommit r158407: Allow SROA to look at a vector type and see if the offset ↵Pete Cooper
is out of range to be replaced with a scalar access. Now with additional fix and test for indexing into a vector inside a struct git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158479 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-14Implement the isSafeToDiscardIfUnused predicate and use it in globalopt andRafael Espindola
globaldce. Globaldce was already removing linkonce globals, but globalopt was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158476 91177308-0d34-0410-b5e6-96231b3b80d8
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