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2007-04-03split some code out into a helper functionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35615 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-03Split a whole ton of code out of visitICmpInst into ↵Chris Lattner
visitICmpInstWithInstAndIntCst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35614 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-03Fix PR1253 and xor2.ll:test[01]Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35612 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02allow -1 strides to reuse "1" strides.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35607 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-021. Make use of APInt operation instead of using ConstantExpr::getXXX.Zhou Sheng
2. Use cheaper APInt methods. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35594 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02Use uint32_t for bitwidth instead of unsigned.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35593 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02Pass the type of the store access, not the type of the store, into theChris Lattner
target hook. This allows us to codegen a loop as: LBB1_1: @cond_next mov r2, #0 str r2, [r0, +r3, lsl #2] add r3, r3, #1 cmn r3, #1 bne LBB1_1 @cond_next instead of: LBB1_1: @cond_next mov r2, #0 str r2, [r0], #+4 add r3, r3, #1 cmn r3, #1 bne LBB1_1 @cond_next This looks the same, but has one fewer induction variable (and therefore, one fewer register) live in the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35592 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02Wrap long lineChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35588 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02use more obvious function name.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35587 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02simplify (x+c)^signbit as (x+c+signbit), pointed out by PR1288. This implementsChris Lattner
test/Transforms/InstCombine/xor.ll:test28 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35584 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02reduce use of std::setChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35576 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02Various passes before isel split edges and do other CFG-restructuring changes.Chris Lattner
isel has its own particular features that it wants in the CFG, in order to reduce the number of times a constant is computed, etc. Make sure that we clean up the CFG before doing any other things for isel. Doing so can dramatically reduce the number of split edges and reduce the number of places that constants get computed. For example, this shrinks CodeGen/Generic/phi-immediate-factoring.ll from 44 to 37 instructions on X86, and from 21 to 17 MBB's in the output. This is primarily a code size win, not a performance win. This implements CodeGen/Generic/phi-immediate-factoring.ll and PR1296. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35575 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-01print the type of an inserted IV in -debug mode.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35563 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-01simplify this code, make it work for ap intsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35561 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-01Avoid unnecessary APInt construction.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35555 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-01For PR1297:Reid Spencer
Support overloaded intrinsics bswap, ctpop, cttz, ctlz. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35547 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-01Fix InstCombine/2007-03-31-InfiniteLoop.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35536 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-31Split the sdisel code munging stuff out into its own opt-pass, CodeGenPrepare.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35528 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-31Delete dead code.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35525 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-31Use APInt operators to calculate the carry bits, remove this loop.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35524 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-30Make sure the use of ConstantInt::getZExtValue() for shift amount safe.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35510 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-301. Make sure the use of ConstantInt::getZExtValue() for getting shiftZhou Sheng
amount is safe. 2. Use new method on ConstantInt instead of (? :) operator. 3. Use new method uge() on ConstantInt to simplify codes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35505 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-30Use APInt operation instead of ConstantExpr::getXX.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35503 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-291. Make more use of APInt::getHighBitsSet/getLowBitsSet.Zhou Sheng
2. Let APInt variable do the binary operation stuff instead of using ConstantExpr::getXXX. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35450 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-29Clean up some codes in InstCombiner::SimplifyDemandedBits().Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35446 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-29Clean up codes in InstCombiner::SimplifyDemandedBits():Zhou Sheng
1. Line out nested call of APInt::zext/trunc. 2. Make more use of APInt::getHighBitsSet/getLowBitsSet. 3. Use APInt[] operator instead of expression like "APIntVal & SignBit". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35444 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-291. Make the APInt variable do the binary operation stuff if possibleZhou Sheng
instead of using ConstantExpr::getXX. 2. Use constant reference to APInt if possible instead of expensive APInt copy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35443 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-28Avoid unnecessary APInt construction.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35431 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-281. Make more use of getLowBitsSet/getHighBitsSet.Zhou Sheng
2. Use APInt[] instead of "X & SignBit". 3. Clean up some codes. 4. Make the expression like "ShiftAmt = ShiftAmtC->getZExtValue()" safe. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35424 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-281. Make more use of getLowBitsSet/getHighBitsSet.Zhou Sheng
2. Make the APInt value do the zext/trunc stuff instead of using ConstantExpr::getZExt(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35422 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-28Use UnknownBIts[BitWidth-1] instead of UnknownBIts & SignBits.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-28Remove unused APInt variable.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35414 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-28Clean up codes in ComputeMaskedBits():Zhou Sheng
1. Line out nested use of zext/trunc. 2. Make more use of getHighBitsSet/getLowBitsSet. 3. Use APInt[] != 0 instead of "(APInt & SignBit) != 0". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35408 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-28For PR1280:Reid Spencer
When converting an add/xor/and triplet into a trunc/sext, only do so if the intermediate integer type is a bitwidth that the targets can handle. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35400 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-27Unbreaks non-debug builds.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35383 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26Implement some minor review feedback.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35373 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26For PR1271:Reid Spencer
Fix another incorrectly converted shift mask. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35371 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26Reduce malloc/free traffic.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35370 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26eliminate use of std::setChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35361 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26Get better debug output by having modified instructions print both theReid Spencer
original and new instruction. A slight performance hit with ostringstream but it is only for debug. Also, clean up an uninitialized variable warning noticed in a release build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35358 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26Get the number of bits to set in a mask correct for a shl/lshr transform.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35357 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26For PR1271:Reid Spencer
Fix SingleSource/Regression/C/2003-05-21-UnionBitFields.c by changing a getHighBitsSet call to getLowBitsSet call that was incorrectly converted from the original lshr constant expression. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35348 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26Look through bitcast when finding IVs. (Chris' patch really.)Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35347 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-25For PR1271:Reid Spencer
Remove a use of getLowBitsSet that caused the mask used for replacement of shl/lshr pairs with an AND instruction to be computed incorrectly. Its not clear exactly why this is the case. This solves the disappearing shifts problem, but it doesn't fix Regression/C/2003-05-21-UnionBitFields. It seems there is more going on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35342 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-25implement Transforms/InstCombine/cast2.ll:test3 and PR1263Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35341 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-25Some cleanup from review:Reid Spencer
* Don't assume shift amounts are <= 64 bits * Avoid creating an extra APInt in SubOne and AddOne by using -- and ++ * Add another use of getLowBitsSet * Convert a series of if statements to a switch git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35339 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-25Refactor several ConstantExpr::getXXX calls with ConstantInt argumentsReid Spencer
using the facilities of APInt. While this duplicates a tiny fraction of the constant folding code, it also makes the code easier to read and avoids large ConstantExpr overhead for simple, known computations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35335 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-251. Avoid unnecessary APInt construction if possible.Zhou Sheng
2. Use isStrictlyPositive() instead of isPositive() in two places where they need APInt value > 0 not only >=0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35333 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-25Make more uses of getHighBitsSet and get rid of some pointless & of anReid Spencer
APInt with its type mask. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35325 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-25More APIntification:Reid Spencer
* Convert the last use of a uint64_t that should have been an APInt. * Change ComputeMaskedBits to have a const reference argument for the Mask so that recursions don't cause unneeded temporaries. This causes temps to be needed in other places (where the mask has to change) but this change optimizes for the recursion which is more frequent. * Remove two instances of &ing a Mask with getAllOnesValue. Its not needed any more because APInt is accurate in its bit computations. * Start using the getLowBitsSet and getHighBits set methods on APInt instead of shifting. This makes it more clear in the code what is going on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35321 91177308-0d34-0410-b5e6-96231b3b80d8
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