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* Missed the case where alloca is used but the stack size (not including ↵Evan Cheng2007-07-171-17/+17
| | | | | | callee-saved portion) is zero. Thanks Dan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39974 91177308-0d34-0410-b5e6-96231b3b80d8
* detect invalid combination of sret and byvalRafael Espindola2007-07-171-0/+4
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* XFAIL these on sparc-solarisGabor Greif2007-07-173-2/+8
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* Use push / pop for prologues and epilogues.Evan Cheng2007-07-177-93/+157
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* Make use of the process_builder_args library function.Reid Spencer2007-07-171-21/+14
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* For PR1558:Reid Spencer2007-07-177-0/+0
| | | | | | | | | Move tests that have C/C++ sources into the appropriate directory. This allows them to be selected for testing based on whether llvm-gcc is present or not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39963 91177308-0d34-0410-b5e6-96231b3b80d8
* no email addrs in file headersChris Lattner2007-07-174-12/+8
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* Unbreak the build by putting calls to free into the implementation file andReid Spencer2007-07-172-4/+8
| | | | | | | having that implementation file #include <cstdlib>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39952 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily set SROA threshold to 512.Evan Cheng2007-07-171-1/+2
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* Take advantage of undefined behavior if the source program tries to GEPOwen Anderson2007-07-161-11/+4
| | | | | | | beyond the end of an alloca to make FastDSE faster and more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39945 91177308-0d34-0410-b5e6-96231b3b80d8
* Normally, we don't want to install and we only need to build tools.Reid Spencer2007-07-161-1/+1
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* No, we're not looking for a directory named /config.status.Reid Spencer2007-07-161-2/+1
| | | | | | | Sigh .. fix copy & paste error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39939 91177308-0d34-0410-b5e6-96231b3b80d8
* In ModuleInfo.txt, make sure that the script being executed can beReid Spencer2007-07-162-3/+4
| | | | | | | | found by prepending a . In build-for-llvm-top.sh, dereference variables for exansion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39936 91177308-0d34-0410-b5e6-96231b3b80d8
* Prepare for the future when llvm doesn't depend on llvm-gcc-4-0.Reid Spencer2007-07-161-1/+1
| | | | | | | | This also avoids a fork bomb from the llvm-top/build script which doesn't know how to handle cycles in the dependence graph. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39933 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove insignificant test no longer needed.Reid Spencer2007-07-161-6/+0
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* Add support for walking up memory def chains, which enables finding many moreOwen Anderson2007-07-163-34/+65
| | | | | | | dead stores on 400.perlbench. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39929 91177308-0d34-0410-b5e6-96231b3b80d8
* Use realloc() to (potentially) resize the contents of SmallPtrSet in place.Owen Anderson2007-07-162-11/+10
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* Return Undef if the block has no dominator. This was required to allowReid Spencer2007-07-161-0/+4
| | | | | | | | | llvm-gcc build to succeed. Without this change it fails in libstdc++ compilation. This causes no regressions in dejagnu tests. However, someone who knows this code better might want to review it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39924 91177308-0d34-0410-b5e6-96231b3b80d8
* Use ConstantFoldFP for folding all unary floating-point operations which mayDan Gohman2007-07-161-20/+25
| | | | | | | | | | have an error, and refector out the code for binary operators into ConstantFoldBinaryFP and use it for all binary floating-point operations which may have an error. These functions still rely exclusively on errno to detect errors though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39923 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the documentation for llvm.sqrt so that sqrt(0) has defined behavior,Dan Gohman2007-07-161-1/+1
| | | | | | | which appears to be the intent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39922 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix comments about vectors to use the current wording.Dan Gohman2007-07-1613-27/+27
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* Remove the trailing semicolon from function declarations in LLVM,Dan Gohman2007-07-162-2/+2
| | | | | | | where it's interpreted as a comment, not part of the syntax. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39920 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix validation errorsBill Wendling2007-07-161-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39917 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up some formattingBill Wendling2007-07-161-3/+2
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* Clean up some formatting. Add some doc_code div tags.Bill Wendling2007-07-161-36/+53
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* Prepare for building from llvm-top. Unfortunately, this doesn't work becauseReid Spencer2007-07-162-4/+34
| | | | | | | of the cyclic depndency between llvm and llvm-gcc-4-0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39910 91177308-0d34-0410-b5e6-96231b3b80d8
* Repair a regression in Transforms/InstCombine/mul.ll that Reid noticed.Chris Lattner2007-07-161-0/+13
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* rename function to avoid llvm-upgrade warningChris Lattner2007-07-161-1/+1
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* Start adding and cleaning up comments.Nick Lewycky2007-07-161-4/+12
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* Handle decrementing loops properly. Fixes PR1533.Nick Lewycky2007-07-163-19/+35
| | | | | | | | | | Always pass the constant as the second parameter to HowManyLessThans. Remove obsolete "isSigned" parameter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39893 91177308-0d34-0410-b5e6-96231b3b80d8
* add a helper method.Chris Lattner2007-07-151-0/+1
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* new testcaseChris Lattner2007-07-151-0/+6
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* Implement shift-simplify.ll:test[45].Chris Lattner2007-07-152-11/+35
| | | | | | | | | | | | | First teach instcombine that sign bit checks only demand the sign bit, this allows simplify demanded bits to hack on expressions better. Second, teach instcombine that ashr is useless if only the sign bit is demanded. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39880 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement shift-simplify.ll:test3, turning:Chris Lattner2007-07-152-103/+123
| | | | | | | | | (X << 31) <s 0 --> (X&1) != 0 This happens dozens of times in the CFE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39879 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarify the language. Pointed out by Duncan Sands.Nick Lewycky2007-07-142-4/+9
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* Fix the build. Patch from Holger Schurig.Nick Lewycky2007-07-141-1/+2
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* Long live the exception handling!Anton Korobeynikov2007-07-1425-35/+257
| | | | | | | | | | | | | | | | This patch fills the last necessary bits to enable exceptions handling in LLVM. Currently only on x86-32/linux. In fact, this patch adds necessary intrinsics (and their lowering) which represent really weird target-specific gcc builtins used inside unwinder. After corresponding llvm-gcc patch will land (easy) exceptions should be more or less workable. However, exceptions handling support should not be thought as 'finished': I expect many small and not so small glitches everywhere. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39855 91177308-0d34-0410-b5e6-96231b3b80d8
* Use maximal intersection algorithm exclusively. Fixes miscompile bug.Nick Lewycky2007-07-141-11/+11
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* Add alternate ConstantRange intersection algorithm.Nick Lewycky2007-07-142-0/+87
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* Added test case from PR1540.Evan Cheng2007-07-131-0/+11
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* Make LCSSA a loop pass.Devang Patel2007-07-132-22/+12
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* Fix for PR1540: Specify F0, F1 are sub-registers of D0, etc.Evan Cheng2007-07-131-2/+2
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* Handle GEPs with all-zero indices in the same way we handle pointer-pointer ↵Owen Anderson2007-07-131-3/+12
| | | | | | | | | bitcasts. Also, fix a potentia infinite loop. This brings FastDSE to parity with old DSE on 175.vpr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39839 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable claims to preserve analysis until open issues are resolved.Devang Patel2007-07-132-10/+0
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* Eliminate an unused parameter.Dan Gohman2007-07-132-3/+3
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* Fix the comment for LegalizeOp to more accurately reflect what it does.Dan Gohman2007-07-131-3/+4
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* remove obsolete noteChris Lattner2007-07-131-5/+0
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* Don't call SimplifyVBinOp for non-vector operations, following earlier reviewDan Gohman2007-07-131-25/+49
| | | | | | | feedback. This theoretically makes the common (scalar) case more efficient. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39823 91177308-0d34-0410-b5e6-96231b3b80d8
* fix some bugs in the manualChris Lattner2007-07-131-2/+2
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* Be more aggressive in removing dead stores, and in removing instructions ↵Owen Anderson2007-07-131-8/+24
| | | | | | | | | trivially dead after DSE. This drastically improves the effect of FastDSE on kimwitu++. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39819 91177308-0d34-0410-b5e6-96231b3b80d8
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