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2005-08-02Update to use the new MathExtras.h support for log2 computation.Chris Lattner
Patch contributed by Jim Laskey! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22592 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02Like the comment says, do not insert cast instructions before phi nodesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22586 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02This code was very close, but not quite right. It did not take intoChris Lattner
consideration the case where a reference in an unreachable block could occur. This fixes Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll, something I ran into while bugpoint'ing another pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22584 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02add a comment, make a check more lenientChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22581 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02Simplify for loop, clear a per-loop map after processing each loopChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22580 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02Add a commentChris Lattner
Make LSR ignore GEP's that have loop variant base values, as we currently cannot codegen them git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22576 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02Fix an iterator invalidation problemChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22575 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-01ConstantInt::get only works for arguments < 128.Chris Lattner
SimplifyLibCalls probably has to be audited to make sure it does not make this mistake elsewhere. Also, if this code knows that the type will be unsigned, obviously one arm of this is dead. Reid, can you take a look into this further? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22566 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Keep tabs and trailing spaces out.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22565 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Fix VC++ build problems.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22564 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Ack, typoNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22560 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30Commit a new LoopStrengthReduce pass that can use scalar evolutions andNate Begeman
target data to decide which loop induction variables to strength reduce and how to do so. This work is mostly by Chris Lattner, with tweaks by me to get it working on some of MultiSource. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22558 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
2005-07-27Eliminate all remaining tabs and trailing spaces.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-26ConvertibleToGEP always returns 0, remove some old crufty code whichChris Lattner
is actually dead because of this! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22515 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-20Do not let MaskedValueIsZero consider undef to be zero, for reasonsChris Lattner
explained in the comment. This fixes UnitTests/2003-09-18-BitFieldTest on darwin git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22483 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-18When transforming &A[i] < &A[j] -> i < j, make sure to perform the comparisonChris Lattner
as a signed compare. This patch may fix PR597, but is correct in any case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22465 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-07Fix a problem that instcombine would hit when dealing with unreachable code.Chris Lattner
Because the instcombine has to scan the entire function when it starts up to begin with, we might as well do it in DFO so we can nuke unreachable code. This fixes: Transforms/InstCombine/2005-07-07-DeadPHILoop.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22348 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-30Fix PR590 and Transforms/Mem2Reg/2005-06-30-ReadBeforeWrite.ll.Chris Lattner
The optimization for locally used allocas was not safe for allocas that were read before they were written. This change disables that optimization in that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22318 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29Doh! Forgot to LLVMify the style.John Criswell
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22312 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29Basic fix for PR#591; don't convert an fprintf() to an fwrite() if thereJohn Criswell
is a mismatch in their character type pointers (i.e. fprintf() prints an array of ubytes while fwrite() takes an array of sbytes). We can probably do better than this (such as casting the ubyte to an sbyte). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22310 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-24add a debug typeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22277 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-20prevent va_arg from being hoisted from a loopAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22265 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-19prevent DCE of vaarg intrinsics. This should take care of most regressionsAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22263 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18core changes for varargsAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22254 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18Fix a problem with the strcmp optimization checking the wrong string andReid Spencer
not casting to the correct type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22250 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18Clean up some uninitialized variables and missing return statements thatReid Spencer
GCC 4.0.0 compiler (sometimes incorrectly) warns about under release build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22249 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-17This is not true: (X != 13 | X < 15) -> X < 15Chris Lattner
It is actually always true. This fixes PR586 and Transforms/InstCombine/2005-06-16-SetCCOrSetCCMiscompile.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22236 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-17Don't crash when dealing with INTMIN. This fixes PR585 andChris Lattner
Transforms/InstCombine/2005-06-16-RangeCrash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22234 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-17Don't crash on: X = phi (X, X).Chris Lattner
This fixes PR584 and Transforms/SimplifyCFG/2005-06-16-PHICrash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22232 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-17avoid constructing out of range shift amounts.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22230 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-16Fix PR583 and testcase Transforms/InstCombine/2005-06-15-DivSelectCrash.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22227 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-16Fix PR571, removing code that does just the WRONG thing :)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22225 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-16Fix a bug in my previous patch. Do not get the shift amount type (whichChris Lattner
is always ubyte, get the type being shifted). This unbreaks espresso git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22224 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-15Fix PR575, patch provided by John Mellor-Crummey. Thanks!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22223 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
2005-06-15Do not promote globals only used by main to locals if there are constantexprsChris Lattner
or other uses hanging off of them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22219 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-15Fix PR577 and testcase InstCombine/2005-06-15-ShiftSetCCCrash.ll.Chris Lattner
Do not perform undefined out of range shifts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22217 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-15Put the hack back in that removes features, causes regressions to fail, butReid Spencer
allows test programs to succeed. Actual fix for this is forthcoming. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22213 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-13Unbreak several InstCombine regression checks introduced by a hack toReid Spencer
fix the bzip2 test. A better hack is needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22209 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-09Fix a 64-bit problem, passing (int)0 through ... instead of (void*)0Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22206 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-09Fix a problem on 64-bit targets where we passed (int)0 through ... instead ofChris Lattner
(void*)0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22205 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-04hack to fix bzip2 (bug 571)Andrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22192 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21Make the registration hash_map static. No other module needs it. Also,Reid Spencer
document what its for a little better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22164 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21Adjust the file comment to read a little easier.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22163 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21Make sure ... arguments are casted to sbyte* where needed.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22162 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21Add a "brief" comment for CastToCStrReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22161 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-20Fix mismatched type problem that crashed on cases like this:Chris Lattner
sprintf(P, "%s", X); Where X is not an sbyte*. This fixes the bug JohnMC reported on llvm-bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22159 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-20Fix Transforms/SimplifyCFG/switch-simplify-crash.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22158 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-18teach the inliner about coldcc and noreturn functionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22113 91177308-0d34-0410-b5e6-96231b3b80d8
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