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2012-12-04Add 'using' declarations to suppress -Woverloaded-virtual warnings.Matt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169214 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04rdar://12329730 (2nd part, revised)Shuxin Yang
The type of shirt-right (logical or arithemetic) should remain unchanged when transforming "X << C1 >> C2" into "X << (C1-C2)" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169209 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04ASan: add initial support for handling llvm.lifetime intrinsics in ASan - ↵Alexey Samsonov
emit calls into runtime library that poison memory for local variables when their lifetime is over and unpoison memory when their lifetime begins. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169200 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04LoopVectorize.cpp: Suppress a warning. [-Wunused-variable]NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169195 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04Fix whitespace.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169194 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04rdar://12329730 (2nd part)Shuxin Yang
This change tries to simmplify E1 = " X >> C1 << C2" into : - E2 = "X << (C2 - C1)" if C2 > C1, or - E2 = "X >> (C1 - C2)" if C1 > C2, or - E2 = X if C1 == C2. Reviewed by Nadav. Thanks! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169182 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03minor renaming, documentation and cleanups.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169175 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03IF-conversion: teach the cost-model how to grade if-converted loops.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169171 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Now that we have a basic if-conversion infrastructure we can rename theNadav Rotem
"single basic block loop vectorizer" to "innermost loop vectorizer". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169158 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Add initial support for IF-conversion. This patch implements the first 1/3,Nadav Rotem
which is the legality of the if-conversion transformation. The next step is to implement the cost-model for the if-converted code as well as the vectorization itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169152 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03ASan: add blacklist file to ASan pass options. Clang patch for this will follow.Alexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169143 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Teach the jump threading optimization to stop scanning the basic block when ↵Nadav Rotem
calculating the cost after passing the threshold. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169135 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Use the new script to sort the includes of every file under lib.Chandler Carruth
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Remove some buggy and apparantly unnecessary code from SROA.Chandler Carruth
The partitioning logic attempted to handle uses of an alloca with an offset starting before the alloca so long as the use had some overlap with the alloca itself. However, there was a bug where we tested '(uint64_t)Offset >= AllocSize' without first checking whether 'Offset' was positive. As a consequence, essentially every negative offset (that is, starting *before* the alloca does) would be thrown out, even if it was overlapping. The subsequent code to throw out negative offsets which were actually non-overlapping was essentially dead. The code to *handle* overlapping negative offsets was actually dead! I've just removed all of this, and taught SROA to discard any uses which start prior to the alloca from the beginning. It has the lovely property of simplifying the code. =] All the tests still pass, and in fact no new tests are needed as this is already covered by our testsuite. Fixing the code so that negative offsets work the way the comments indicate they were supposed to work causes regressions. That's how I found this. Anyways, this is all progress in the correct direction -- tightening up SROA to be maximally aggressive. Some day, I really hope to turn out-of-bounds accesses to an alloca into 'unreachable'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169120 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03fix stats for added checksNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169119 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-01SROA: Avoid struct and array types early to avoid creating an overly large ↵Benjamin Kramer
integer type. Fixes PR14465. Differential Revision: http://llvm-reviews.chandlerc.com/D148 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169084 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-01Revert previous check in r168581, r169079 as they are still in code review ↵Zhou Sheng
status. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169083 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-01The patch is to improve the memory footprint of pass GlobalOpt. Zhou Sheng
Also check in a case to repeat the issue, on which 'opt -globalopt' consumes 1.6GB memory. The big memory footprint cause is that current GlobalOpt one by one hoists and stores the leaf element constant into the global array, in each iteration, it recreates the global array initializer constant and leave the old initializer alone. This may result in many obsolete constants left. For example: we have global array @rom = global [16 x i32] zeroinitializer After the first element value is hoisted and installed: @rom = global [16 x i32] [ 1, 0, 0, ... ] After the second element value is installed: @rom = global [16 x 32] [ 1, 2, 0, 0, ... ] // here the previous initializer is obsolete ... When the transform is done, we have 15 obsolete initializers left useless. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169079 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30reversed the logic of the log2 detection routine to reduce the number of ↵Pedro Artigas
nested ifs git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169049 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30minor cleanupsNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Replace r168930 with a more reasonable patch.Bill Wendling
The original patch removed a bunch of code that the SjLjEHPrepare pass placed into the entry block if all of the landing pads were removed during the CodeGenPrepare class. The more natural way of doing things is to run the CGP *before* we run the SjLjEHPrepare pass. Make it so! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169044 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Addresses many style issues with prior checkin (r169025)Pedro Artigas
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169043 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Add fast math inst combine X*log2(Y*0.5)-->X*log2(Y)-XPedro Artigas
reviewed by Michael Ilseman <milseman@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169025 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Remove the use of LPPassManager. We can remove LPM because we dont need to ↵Nadav Rotem
run any additional loop passes on the new vector loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169016 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30[asan] simplify the code around doesNotReturn call. It now magically works. Kostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168995 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Fix non-determinism introduced in r168970 and pointed out by Duncan.Chandler Carruth
We're iterating over a non-deterministically ordered container looking for two saturating flags. To do this correctly, we have to saturate both, and only stop looping if both saturate to their final value. Otherwise, which flag we see first changes the result. This is also a micro-optimization of the previous version as now we don't go into the (possibly expensive) test logic once the first violation of either constraint is detected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168989 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Rearrange the comments, control flow, and variable names; noChandler Carruth
functionality changed. Evan's commit r168970 moved the code that the primary comment in this function referred to to the other end of the function without moving the comment, and there has been a steady creep of "boolean" logic in it that is simpler if handled via early exit. That way each special case can have its own comments. I've also made the variable name a bit more explanatory than "AllFit". This is in preparation to fix the non-deterministic output of this function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168988 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Move library call simplification statistic to instcombineMeador Inge
The simplify-libcalls pass maintained a statistic to count the number of library calls that have been simplified. Now that library call simplification is being carried out in instcombine the statistic should be moved to there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168975 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Move the InstVisitor utility into VMCore where it belongs. It heavilyChandler Carruth
depends on the IR infrastructure, there is no sense in it being off in Support land. This is in preparation to start working to expand InstVisitor into more special-purpose visitors that are still generic and can be re-used across different passes. The expansion will go into the Analylis tree though as nothing in VMCore needs it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168972 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30Fix logic to determine whether to turn a switch into a lookup table. WhenEvan Cheng
the tables cannot fit in registers (i.e. bitmap), do not emit the table if it's using an illegal type. rdar://12779436 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168970 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29rdar://12100355 (part 1)Shuxin Yang
This revision attempts to recognize following population-count pattern: while(a) { c++; ... ; a &= a - 1; ... }, where <c> and <a>could be used multiple times in the loop body. TODO: On X8664 and ARM, __buildin_ctpop() are not expanded to a efficent instruction sequence, which need to be improved in the following commits. Reviewed by Nadav, really appreciate! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168931 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29Handle the situation where CodeGenPrepare removes a reference to a BB that hasBill Wendling
the last invoke instruction in the function. This also removes the last landing pad in an function. This is fine, but with SjLj EH code, we've already placed a bunch of code in the 'entry' block, which expects the landing pad to stick around. When we get to the situation where CGP has removed the last landing pad, go ahead and nuke the SjLj instructions from the 'entry' block. <rdar://problem/12721258> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168930 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29No need to run LICM after loop vectorization because we dont generate ↵Nadav Rotem
invariant code any more. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168928 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29When broadcasting invariant scalars into vectors, place the broadcast code ↵Nadav Rotem
in the preheader. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168927 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29instcombine: Migrate puts optimizationsMeador Inge
This patch migrates the puts optimizations from the simplify-libcalls pass into the instcombine library call simplifier. All the simplifiers from simplify-libcalls have now been migrated to instcombine. Yay! Just a few other bits to migrate (prototype attribute inference and a few statistics) and simplify-libcalls can finally be put to rest. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[ASan] Simplify check added in r168861. Bail out from module pass early if ↵Alexey Samsonov
the module is blacklisted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168913 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29Apply Takumi's patch to suppress unused-variable warnings in -Asserts builds.Matt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168911 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29Add options to AddressSanitizer passes to make them configurable by frontend.Alexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168910 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29instcombine: Migrate fputs optimizationsMeador Inge
This patch migrates the fputs optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168893 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29instcombine: Migrate fwrite optimizationsMeador Inge
This patch migrates the fwrite optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168892 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29instcombine: Migrate fprintf optimizationsMeador Inge
This patch migrates the fprintf optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168891 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Handle vector manipulation instructions.Evgeniy Stepanov
Handle insertelement, extractelement, shufflevector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168889 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Fix getOriginForNaryOp.Evgeniy Stepanov
The old version failed on a 3-arg instruction with (-1, 0, 0) shadows (it would pick the 3rd operand origin irrespective of its shadow). The new version always picks the origin of the rightmost poisoned operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168887 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Basic handling of inline asm.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168884 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Propagate shadow through (x<0) and (x>=0) comparisons.Evgeniy Stepanov
This is a special case of signed relational comparison where result only depends on the sign of x. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168881 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Fix shadow & origin store & load alignment.Evgeniy Stepanov
This change ensures that shadow memory accesses have the same alignment as corresponding app memory accesses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168880 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Optimize getOriginPtr.Evgeniy Stepanov
Rewrite getOriginPtr in a way that lets subsequent optimizations factor out the common part of Shadow and Origin address calculation. Improves perf by up to 5%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168879 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Fix a few compilation warnings.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168878 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Transform memcpy and memset to library calls.Evgeniy Stepanov
This was already done for memmove, where it is required for correctness. This change improves performance by avoiding copyingthe same memory twice. Also, the library functions are given __msan_ prefix to prevent instcombine pass from converting them back to intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168876 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29[msan] Make sure that report callbacks do not get merged.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168873 91177308-0d34-0410-b5e6-96231b3b80d8
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