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path: root/lib/Transforms/Scalar/IndVarSimplify.cpp
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2007-01-15Eliminate calls to isInteger, generalizing code and tightening checks as needed.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33218 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-12simplify some codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33150 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-12For PR1064:Reid Spencer
Implement the arbitrary bit-width integer feature. The feature allows integers of any bitwidth (up to 64) to be defined instead of just 1, 8, 16, 32, and 64 bit integers. This change does several things: 1. Introduces a new Derived Type, IntegerType, to represent the number of bits in an integer. The Type classes SubclassData field is used to store the number of bits. This allows 2^23 bits in an integer type. 2. Removes the five integer Type::TypeID values for the 1, 8, 16, 32 and 64-bit integers. These are replaced with just IntegerType which is not a primitive any more. 3. Adjust the rest of LLVM to account for this change. Note that while this incremental change lays the foundation for arbitrary bit-width integers, LLVM has not yet been converted to actually deal with them in any significant way. Most optimization passes, for example, will still only deal with the byte-width integer types. Future increments will rectify this situation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33113 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-08Comparison of primitive type sizes should now be done in bits, not bytes.Reid Spencer
This patch converts getPrimitiveSize to getPrimitiveSizeInBits where it is appropriate to do so (comparison of integer primitive types). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33012 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-07add -debug output for -indvars.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32971 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-31For PR950:Reid Spencer
This patch replaces signed integer types with signless ones: 1. [US]Byte -> Int8 2. [U]Short -> Int16 3. [U]Int -> Int32 4. [U]Long -> Int64. 5. Removal of isSigned, isUnsigned, getSignedVersion, getUnsignedVersion and other methods related to signedness. In a few places this warranted identifying the signedness information from other sources. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32785 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-23For PR950:Reid Spencer
This patch removes the SetCC instructions and replaces them with the ICmp and FCmp instructions. The SetCondInst instruction has been removed and been replaced with ICmpInst and FCmpInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-19Switch over Transforms/Scalar to use the STATISTIC macro. For each statisticChris Lattner
converted, we lose a static initializer. This also allows GCC to emit warnings about unused statistics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32690 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-06Detemplatize the Statistic class. The only type it is instantiated withChris Lattner
is 'unsigned'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32279 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-27For PR950:Reid Spencer
The long awaited CAST patch. This introduces 12 new instructions into LLVM to replace the cast instruction. Corresponding changes throughout LLVM are provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the exception of 175.vpr which fails only on a slight floating point output difference. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-21Fix Transforms/IndVarsSimplify/2006-09-20-LFTR-Crash.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30555 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-27eliminate RegisterOpt. It does the same thing as RegisterPass.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29925 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-25Add an assertion to check that we're really preserving LCSSA.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29886 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-25Reapply the indvars patch, since nothing blew up last night.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29874 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-25Revert my previous patch. Since there are some major changes that went in ↵Owen Anderson
today, I'm going to wait to put this in HEAD until tomorrow, so as not to clutter the nightly tester. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29868 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-25Specify that indvars actually preserve LCSSA. This has been done for a ↵Owen Anderson
while, but I forgot to put in the analysis usage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29867 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-18Fix a grammaro in a comment.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29765 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-14Hopefully the final attempt at making IndVars preserve LCSSA.Owen Anderson
This should fix PR 831. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29141 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-13Revert this patch temporarily until PR831 is fixed.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29134 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12IndVars now (correctly) preserves LCSSA form.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29126 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-11Revert my indvars changes because they were breaking things. Unfortunately thisOwen Anderson
didn't start showing up until after the recent instcombine fixes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29102 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-27De-pessimize the handling of LCSSA Phi nodes in IndVarSimplify. Hopefully thisOwen Anderson
will make Shootout-C/nestedloop faster. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28924 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-17Fix IndVarsSimplify/2006-06-16-Indvar-LCSSA-Crash.ll, a case where aChris Lattner
"LCSSA" phi node causes indvars to break dominance properties. This fixes causes indvars to avoid inserting aggressive code in this case, instead indvars should be fixed to be more aggressive in the face of lcssa phi's. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28850 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18Fix a crash building 176.gcc due to my recent patch, which only fixedChris Lattner
half the problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24414 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-17This was checking the wrong GEP expression. Fixing this fixes a gccas crashChris Lattner
compiling mysql reported by Ted Kremenek. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24402 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10Allow indvar simplify to canonicalize ANY affine IV, not just affine IVs withChris Lattner
constant stride. This implements Transforms/IndVarsSimplify/variable-stride-ivs.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22744 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Break SCEVExpander out of IndVarSimplify into its own .h/.cpp file so thatNate Begeman
other passes may use it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22557 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-15Fix PR582. The rewriter can move casts around, which invalidated theChris Lattner
BB iterator. This fixes Transforms/IndVarsSimplify/2005-06-15-InstMoveCrash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22221 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21Remove trailing whitespaceMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-14Fix the second bug attached to PR504.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20181 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-12Fix for testcase Transforms/IndVarsSimplify/2005-02-11-InvokeCrash.llChris Lattner
and PR504. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20129 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27Convert 'struct' to 'class' in various places to adhere to the coding standardsChris Lattner
and work better with VC++. Patch contributed by Morten Ofstad! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17281 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-12Fix a REALLY obscure bug in my previous checkin, which was splicing the ENDChris Lattner
marker from one ilist into the middle of another basic block! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16925 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-11Handle a common case more carefully. In particular, instead of transformingChris Lattner
pointer recurrences into expressions from this: %P_addr.0.i.0 = phi sbyte* [ getelementptr ([8 x sbyte]* %.str_1, int 0, int 0), %entry ], [ %inc.0.i, %no_exit.i ] %inc.0.i = getelementptr sbyte* %P_addr.0.i.0, int 1 ; <sbyte*> [#uses=2] into this: %inc.0.i = getelementptr sbyte* getelementptr ([8 x sbyte]* %.str_1, int 0, int 0), int %inc.0.i.rec Actually create something nice, like this: %inc.0.i = getelementptr [8 x sbyte]* %.str_1, int 0, int %inc.0.i.rec git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16924 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-20Prototype these functions more accuratelyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16432 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-15Convert code to compile with vc7.1.Reid Spencer
Patch contributed by Paolo Invernizzi. Thanks Paolo! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16368 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-01Changes For Bug 352Reid Spencer
Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-26Throttle back indvar substitution from creating multiplies in loops. This ↵Chris Lattner
is bad bad bad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15227 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-24Two fixes. First, stop using the ugly shouldSubstituteIndVar method.Chris Lattner
Second, disable substitution of quadratic addrec expressions to avoid putting multiplies in loops! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14358 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-20Make use of BinaryOperator::create* methods to shrinkify code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14262 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-19Fix a nasty bug, noticed by ReidChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14249 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-23Move the scev expansion code into this pass, where it belongs. There isChris Lattner
still room for cleanup, but at least the code modification is out of the analysis now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13135 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-22Disable a previous patch that was causing indvars to loop infinitely :(Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13108 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-22Fix an extremely serious thinko I made in revision 1.60 of this file.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13106 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-21Implement a todo, rewriting all possible scev expressions inside of theChris Lattner
loop. This eliminates the extra add from the previous case, but it's not clear that this will be a performance win overall. Tommorows test results will tell. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13103 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-21Implement a fixme. The helps loops that have induction variables of differentChris Lattner
types in them. Instead of creating an induction variable for all types, it creates a single induction variable and casts to the other sizes. This generates this code: no_exit: ; preds = %entry, %no_exit %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=4] *** %j.0.0 = cast uint %indvar to short ; <short> [#uses=1] %indvar = cast uint %indvar to int ; <int> [#uses=1] %tmp.7 = getelementptr short* %P, uint %indvar ; <short*> [#uses=1] store short %j.0.0, short* %tmp.7 %inc.0 = add int %indvar, 1 ; <int> [#uses=2] %tmp.2 = setlt int %inc.0, %N ; <bool> [#uses=1] %indvar.next = add uint %indvar, 1 ; <uint> [#uses=1] br bool %tmp.2, label %no_exit, label %loopexit instead of: no_exit: ; preds = %entry, %no_exit %indvar = phi ushort [ %indvar.next, %no_exit ], [ 0, %entry ] ; <ushort> [#uses=2] *** %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=3] %indvar = cast uint %indvar to int ; <int> [#uses=1] %indvar = cast ushort %indvar to short ; <short> [#uses=1] %tmp.7 = getelementptr short* %P, uint %indvar ; <short*> [#uses=1] store short %indvar, short* %tmp.7 %inc.0 = add int %indvar, 1 ; <int> [#uses=2] %tmp.2 = setlt int %inc.0, %N ; <bool> [#uses=1] %indvar.next = add uint %indvar, 1 *** %indvar.next = add ushort %indvar, 1 br bool %tmp.2, label %no_exit, label %loopexit This is an improvement in register pressure, but probably doesn't happen that often. The more important fix will be to get rid of the redundant add. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13101 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Change the ExitBlocks list from being explicitly contained in the LoopChris Lattner
structure to being dynamically computed on demand. This makes updating loop information MUCH easier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13045 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17If the loop executes a constant number of times, try a bit harder to replaceChris Lattner
exit values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17Even if there are not any induction variables in the loop, if we can computeChris Lattner
the trip count for the loop, insert one so that we can canonicalize the exit condition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13015 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Fix some of the strange CBE-only failures that happened last night.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12980 91177308-0d34-0410-b5e6-96231b3b80d8
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