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2006-10-223 Changes:Chris Lattner
1. Better document what is going on here. 2. Only hack on one branch per iteration, making the results less conservative. 3. Handle the problematic case by marking edges executable instead of by playing with value lattice states. This is far less pessimistic, and fixes SCCP/ipsccp-gvar.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31106 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21don't break infinite loopsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31102 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Implement support for branch reversal, fix a bug in branch analysis.Chris Lattner
This provides stuff like: cmpw cr0, r15, r29 mr r14, r15 - bge cr0, LBB3_111 ;bb656 - b LBB3_90 ;bb501 + blt cr0, LBB3_90 ;bb501 LBB3_111: ;bb656 lwz r18, 68(r1) which is particularly good for dispatch group formation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31101 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Use branch reversal to do stuff like this:Chris Lattner
call L_strcmp$stub testl %eax, %eax - jne LBB26_208 #cond_true6020 - jmp LBB26_227 #bb7119 + je LBB26_227 #bb7119 LBB26_208: #cond_true6020 movl $l31_str14, 4(%esp) testl %eax, %eax - jne LBB26_704 #cond_true13042 - jmp LBB26_713 #bb13151 + je LBB26_713 #bb13151 LBB26_704: #cond_true13042 movl $_str52, 4(%esp) cmpl 76(%ecx), %eax - jge LBB26_1628 #cond_false63.i.i - jmp LBB26_1769 #_Z8makeGridP13mrSurfaceListidiidd.exit.i + jl LBB26_1769 #_Z8makeGridP13mrSurfaceListidiidd.exit.i LBB26_1628: #cond_false63.i.i movl $0, 48964(%esp) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31100 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Implement support for branch condition reversal.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31099 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Transform code like:Chris Lattner
jle FOO jmp BAR BAR: into: jle FOO BAR: ... whoa! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31098 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Simplify code, no functionality changeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31097 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21implement support for inserting a cond branchChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31096 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21allow insertion of a conditional branch with fall-throughChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31095 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Three changes:Chris Lattner
1. Remove a bunch of ifdef'd code. 2. When a block just contains an uncond branch, change all blocks branching to it to jump to the destination instead. 3. If branch analysis tells us some edges in the machinecfg are not actually possible, remove them. #2 triggers a suprisingly large number of times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31094 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21update assert messageChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31093 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-21Add an experimental cross-jumping implementation.Chris Lattner
This is currently disabled by default and limited in several ways, but does have a positive effect. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31090 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20implement MachineOperand::isIdenticalToChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31088 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20llvm-extract should remove module-level asmChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31086 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20bugfixChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31074 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20Fix an ugly problem in SCCP. This fixes Benchmarks/Misc-C++/mandel-text.cppChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31073 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20Fix miscompilation of MallocBench/espresso which code review pointed outChris Lattner
but apparently didn't make it into the final patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31070 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20Make flag and chain edges visually distinguishable from value edges in DOTChris Lattner
output. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31067 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20Implement branch analysis/xform hooks required by the branch folding pass.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31065 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20For PR950:Reid Spencer
This patch implements the first increment for the Signless Types feature. All changes pertain to removing the ConstantSInt and ConstantUInt classes in favor of just using ConstantInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20While creating mask, use 1ULL instead of 1.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31062 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20Fix SimplifyCFG/2006-10-19-UncondDiv.ll by disabling a bad xform.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31061 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20add a method to determine whether evaluation of a constant can trap.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31059 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19Partially in response to PR926: insert the newly created machine basicBill Wendling
blocks into the basic block list when lowering the switch inst. into a binary tree of if-then statements. This allows the "visitSwitchCase" func to allow for fall-through behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31057 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19It is OK to remove extra cast if operation is EQ/NE even though sourceDevang Patel
and destination sign may not match but other conditions are met. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31056 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19Typo Typo.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31055 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19Typo.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31054 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19Fix bug in PR454 resolution. Added new test case.Devang Patel
This fixes llvmAsmParser.cpp miscompile by llvm on PowerPC Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31053 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19use Pat to implement extloadi8 and extloadi16Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31052 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19implement undefRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31049 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19print common symbolsRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31048 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19implement extloadi8 and extloadi16Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31047 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19expand SIGN_EXTEND_INREGRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31046 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-19expand brind so that we don't have to implement jump tables right nowRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31045 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Beef up the output from DiffFilesWithTolerance by setting the error codeReid Spencer
to describe the difference being reported. This assists with understanding differences an llvm-test and should help with bugpoint too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31044 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Add option for controlling inclusion of global AA.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31040 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18fit in 80 colsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31039 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18add a noteChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31038 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18add blxRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31037 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18add isTerminatortto b and bcondRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31036 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Use global info for alias analysis.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31035 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18implement CallingConv::Fast as CallingConv::CRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31034 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Fixed mingw\cygwin linkonce linkage once again.Anton Korobeynikov
Added workaround for linker bug with linkonce sections. Changed sections prefix to allow linker merge them (PE loader doesn't like too much long-named sections :) ) All of this unbreaks libstdc++ on mingw32 allowing (small) programs to be compiled, linked and run. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31033 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Add support for the new "target data" information in .ll files. This providesOwen Anderson
a better encoding of the targets data layout, rather than trying to guess it from the endianness and pointersize like before. Update the generated files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31031 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Add support for the new "target data" information in .ll files. This providesOwen Anderson
a better encoding of the targets data layout, rather than trying to guess it from the endianness and pointersize like before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31030 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18set the ppc64 stack pointer right, dynamic alloca now works for ppc64Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31028 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-18Expand alloca for ppc64Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31027 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-17Teach the branch folder to update debug info if it removes blocks with lineChris Lattner
# notes in it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31026 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-17add a method to remove a line # record.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31025 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-17expose DWARF_LABEL opcode# so the branch folder can update debug info properly.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31024 91177308-0d34-0410-b5e6-96231b3b80d8
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