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2008-11-28Add 'hidden' and 'really_hidden' option properties.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60198 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-28Documentation: clarify what is meant by 'multiple edges'.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60197 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27delete ErasePossiblyDeadInstructionTree, replacing uses of it withChris Lattner
RecursivelyDeleteTriviallyDeadInstructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60196 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Simplify LoopStrengthReduce::DeleteTriviallyDeadInstructions byChris Lattner
making it use RecursivelyDeleteTriviallyDeadInstructions to do the heavy lifting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60195 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27enhance RecursivelyDeleteTriviallyDeadInstructions to makeChris Lattner
PHIs dead if they are single-value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60194 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Enhance RecursivelyDeleteTriviallyDeadInstructions to optionallyChris Lattner
return a list of deleted instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60193 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27use continue to reduce indentationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60192 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27remove doConstantPropagation and dceInstruction, they are justChris Lattner
wrappers around the interesting code and use an obscure iterator abstraction that dates back many many years. Move EraseDeadInstructions to Transforms/Utils and name it RecursivelyDeleteTriviallyDeadInstructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60191 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27simplify code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60190 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27simplify this logic.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60189 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Also update the README.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60188 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Chris prefers icmp/select over udiv!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60187 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add a synthetic missed optimization.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60186 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add a couple of missed optimizations on integer vectors. Multiply and divideNick Lewycky
by 1, as well as multiply by -1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60182 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27defensive patch: if CGP is merging a block with the entry block, make sureChris Lattner
it ends up being the entry block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60180 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Fix PR3138: if we merge the entry block into another block, make sure toChris Lattner
move the other block back up into the entry position! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60179 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Silence a warning.Nick Lewycky
Despite changing the order of evaluation, this doesn't actually change the meaning of the statement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60177 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27fix build on some machines. thanks buildbotNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60175 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27fix my previous commit r60064: compare strings instead of pointersNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60174 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27switch InstCombine::visitLoadInst to use Chris Lattner
FindAvailableLoadedValue git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60169 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27improve const correctness.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60168 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27enhance FindAvailableLoadedValue to make use of AliasAnalysisChris Lattner
if it has it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60167 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27move FindAvailableLoadedValue from JumpThreading to Transforms/Utils.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60166 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Get rid of bogus "control may reach end of non-void function ‘...’ beingBill Wendling
inlined" message. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60165 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27simplify this code a bit.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60164 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Use the new MergeBasicBlockIntoOnlyPred function.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60163 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27move MergeBasicBlockIntoOnlyPred to Transforms/Utils.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60162 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27XFAil test due to reverting of patch.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60161 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27rename ThreadBlock to ProcessBlock, since it does other things thanChris Lattner
just simple threading. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60157 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Comment out code that isn't entirely correct.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60156 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Fixed HTML closing tag, cleaned up some spacing.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60153 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Removing redundant semicolons. No functionality change.Sanjiv Gupta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60149 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Make jump threading substantially more powerful, in the following ways:Chris Lattner
1. Make it fold blocks separated by an unconditional branch. This enables jump threading to see a broader scope. 2. Make jump threading able to eliminate locally redundant loads when they feed the branch condition of a block. This frequently occurs due to reg2mem running. 3. Make jump threading able to eliminate *partially redundant* loads when they feed the branch condition of a block. This is common in code with lots of loads and stores like C++ code and 255.vortex. This implements thread-loads.ll and rdar://6402033. Per the fixme's, several pieces of this should be moved into Transforms/Utils. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60148 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Eliminate a compile time warning.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60145 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Avoid inserting noop's in the middle of a loop.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60141 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27On x86 favors folding short immediate into some arithmetic operations (e.g. ↵Evan Cheng
add, and, xor, etc.) because materializing an immediate in a register is expensive in turns of code size. e.g. movl 4(%esp), %eax addl $4, %eax is 2 bytes shorter than movl $4, %eax addl 4(%esp), %eax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60139 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add a missing case in visitADD.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60137 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add -march=x86.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60135 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add typedef to StringMapEntry.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60134 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Disallow multiple edges.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60127 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Add x86-specific test for add-with-overflow intrinsics.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60125 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Generate something sensible for an [SU]ADDO op when the overflow/carry flag isBill Wendling
the conditional for the BRCOND statement. For instance, it will generate: addl %eax, %ecx jo LOF instead of addl %eax, %ecx ; About 10 instructions to compare the signs of LHS, RHS, and sum. jl LOF git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60123 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Turn on my codegen prepare heuristic by default. It doesn't affect Chris Lattner
performance in most cases on the Grawp tester, but does speed some things up (like shootout/hash by 15%). This also doesn't impact compile time in a noticable way on the Grawp tester. It also, of course, gets the testcase it was designed for right :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60120 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Small formatting change.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60113 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Update to explain how ssp and sspreq attributes override each other.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60112 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Fix typo.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60111 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Cosmetic.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60110 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Check that running the DAG combiner between typeDuncan Sands
and operation legalization does something useful. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60108 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26Describe some more options in the man page.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60105 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26ignore build dirs and generated filesNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60104 91177308-0d34-0410-b5e6-96231b3b80d8
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