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2008-03-12no need to keep around this output.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48285 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Document an implementation detail about EXTRACT_SUBREG and INSERT_SUBREG ↵Evan Cheng
sub-register operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48283 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Improve the return slot optimization to be both more aggressive (not limited ↵Owen Anderson
to sret parameters), and safer (when the passed pointer might be invalid). Thanks to Duncan and Chris for the idea behind this, and extra thanks to Duncan for helping me work out the trap-safety. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48280 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Clean up my own mess.Evan Cheng
X86 lowering normalize vector 0 to v4i32. However DAGCombine can fold (sub x, x) -> 0 after legalization. It can create a zero vector of a type that's not expected (e.g. v8i16). We don't want to disable the optimization since leaving a (sub x, x) is really bad. Add isel patterns for other types of vector 0 to ensure correctness. It's highly unlikely to happen other than in bugpoint reduced test cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48279 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12We also need to collect the VN IDs for the PHI instructions for later updating.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48278 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12When we're determining what registers to coallesce, track the VNInfo IDs for ↵Owen Anderson
the definitions that feed the PHI instructions. We'll need these IDs in order to update LiveIntervals properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12when the bitcode reader is referencing a paramattr, make sure to bump its ↵Chris Lattner
refcount. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48276 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Total brain cramp.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48274 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12This is a simple fix for getting error messages from dlerror inChris Lattner
LoadLibraryPermanently. The current code modifies the value of a pointer that is passed by value, so the caller never gets the message. Patch by Julien Lerouge! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48270 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12One more bit of Altivec parameter passing.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48269 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Be backward compatibleAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48268 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Check multiple return values.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48267 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Make this test x86-specific for now; targets that don't useDan Gohman
the automated CallingConv code to handle return values typically don't support multiple return values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48265 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Implement Altivec passing to varargs functions on ppc.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Set NextMII after issuing a physical register spill.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Fix attribute handling.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48262 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Minor debug output bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48261 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Basic feature test for multiple return values in codegen.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48260 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Ultimately resolve aliases during linking, if possibleAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48259 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Testcase for PR2137Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48258 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Correctly propagate thread-local flag from aliasee to alias. This fixes PR2137Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48257 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Use PassManagerBase instead of FunctionPassManager for functionsDan Gohman
that merely add passes. This allows them to be used with either FunctionPassManager or PassManager, or even with a custom new kind of pass manager. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48256 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Add helper for ultimate aliasee resoltionAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48255 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Handle multiple ret values.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48254 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Initialize.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48253 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Check to see if a two-entry PHI block can be simplifiedDan Gohman
before trying to merge the block into its predecessors. This allows two-entry-phi-return.ll to be simplified into a single basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48252 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Make this test more challenging to help it avoid beingDan Gohman
optimized away before it tests what it is intended to test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48251 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Update testcase for recent aliases changeAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48250 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Honour aliases visibility during asm emissionAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48249 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Honour aliases visibility when reading from/writing to bitcodeAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48248 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Add a test to ensure that all-ones vectors are materialized with pcmpeqd.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48247 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Transfer physical register spill info when load / store folding happens.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48246 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Use the correct value for InSignBit.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48245 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Initial codegen support for functions and calls with multiple return values.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48244 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Implement basic support for the 'f' register class constraint. This basicallyChris Lattner
works, but probably won't if you mix it with 't' or 'u' yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48243 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11coalesce away 80-bit floating point copies.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48241 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11convert a massive if statement to a switch.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48240 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11start handling the 'f' x87 constraint.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48239 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Skip functions that return multiple values.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48233 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11The feature this is testing did not work in the general case,Dale Johannesen
and has been removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48232 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Fix getOperand() for ReturnInst.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48229 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Become multiple return value aware.Devang Patel
Right now, the pass does not optimize tail recursions involving multiple return values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48228 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Add TODO reminder.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48227 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Give PassManager and FunctionPassManager a common base class, withDan Gohman
add(Pass *) as a pure virtual member function. This will allow all the various addPassesTo* functions in LLVM to avoid hard-coding what type of PassManager is used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48226 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Fix typos in comments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48225 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Missed part of recommit.Christopher Lamb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48224 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Recommitting parts of r48130. These do not appear to cause the observed ↵Christopher Lamb
failures. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48223 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Recommitting changes after more testing. These appear to cause no problems.Christopher Lamb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48222 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Use TargetRegisterInfo::getPhysicalRegisterRegClass. Remove duplicated code.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48221 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11If there are multiple register classes that a register belongs to, return ↵Evan Cheng
the super-class (e.g. on x86, returns GR32, not GR32_). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48220 91177308-0d34-0410-b5e6-96231b3b80d8
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