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* code cleanups, no functionality change.Chris Lattner2008-01-171-7/+9
| | | | llvm-svn: 46126
* * Introduce a new SelectionDAG::getIntPtrConstant methodChris Lattner2008-01-1711-152/+168
| | | | | | | | | | | | | and switch various codegen pieces and the X86 backend over to using it. * Add some comments to SelectionDAGNodes.h * Introduce a second argument to FP_ROUND, which indicates whether the FP_ROUND changes the value of its input. If not it is safe to xform things like fp_extend(fp_round(x)) -> x. llvm-svn: 46125
* DAE bug fix. Don't lose parameter attributes on vararg arguments.Evan Cheng2008-01-171-5/+9
| | | | llvm-svn: 46113
* When a live virtual register is being clobbered by an implicit def, it is ↵Evan Cheng2008-01-171-2/+20
| | | | | | | | | | | spilled and the spill is its kill. However, if the local allocator has determined the register has not been modified (possible when its value was reloaded), it would not issue a restore. In that case, mark the last use of the virtual register as kill. llvm-svn: 46111
* Fix arg promotion to propagate the correct attrs on the calls toChris Lattner2008-01-171-14/+25
| | | | | | | promoted functions. This is important for varargs calls in particular. Thanks to duncan for providing a great testcase. llvm-svn: 46108
* Replace std::vector<bool> with BitVector.Evan Cheng2008-01-171-4/+8
| | | | llvm-svn: 46104
* Fixes a nasty dag combiner bug that causes a bunch of tests to fail at -O0.Evan Cheng2008-01-161-6/+44
| | | | | | | | | | | | | | | | | | | | It's not safe to use the two value CombineTo variant to combine away a dead load. e.g. v1, chain2 = load chain1, loc v2, chain3 = load chain2, loc v3 = add v2, c Now we replace use of v1 with undef, use of chain2 with chain1. ReplaceAllUsesWith() will iterate through uses of the first load and update operands: v1, chain2 = load chain1, loc v2, chain3 = load chain1, loc v3 = add v2, c Now the second load is the same as the first load, SelectionDAG cse will ensure the use of second load is replaced with the first load. v1, chain2 = load chain1, loc v3 = add v1, c Then v1 is replaced with undef and bad things happen. llvm-svn: 46099
* Trampoline support for x86-64. This looks likeDuncan Sands2008-01-161-7/+56
| | | | | | | | | it should work, but I have no machine to test it on. Committed because it will at least cause no harm, and maybe someone can test it for me! llvm-svn: 46098
* Handle attribute(used) global variables that are i8.Chris Lattner2008-01-161-14/+13
| | | | llvm-svn: 46090
* Do not mark EH tables no-dead-strip unless theDale Johannesen2008-01-162-13/+40
| | | | | | associated function is so marked. llvm-svn: 46088
* Fix a ppc long double regression I introduced yesterday due to aChris Lattner2008-01-161-0/+1
| | | | | | simplification. This fixes automotive-basicmath on PPC. llvm-svn: 46072
* merge a few pieces of code that do the store/load to stack Chris Lattner2008-01-161-30/+12
| | | | | | pattern to use EmitStackConvert now. llvm-svn: 46066
* rename ExpandBIT_CONVERT to EmitStackConvert, generalizing Chris Lattner2008-01-161-15/+37
| | | | | | it to allow it to emit different load and store kinds. llvm-svn: 46065
* simplify a bunch of code by using SelectionDAG::CreateStackTemporary Chris Lattner2008-01-161-28/+6
| | | | | | instead of inlining its body. llvm-svn: 46062
* Change legalizeop of FP_ROUND and FP_EXTEND to not fall throughChris Lattner2008-01-161-32/+55
| | | | | | | | | into the ANY_EXTEND/ZERO_EXTEND/SIGN_EXTEND code to simplify it. Unmerge the code for FP_ROUND and FP_EXTEND from each other to make each one simpler. llvm-svn: 46061
* make it more clear that this predicate only applies to scalar FP types.Chris Lattner2008-01-162-10/+10
| | | | llvm-svn: 46058
* introduce a isTypeInSSEReg predicate, which allows us to simplifyChris Lattner2008-01-162-21/+18
| | | | | | some code. No functionality change. llvm-svn: 46055
* My previous commit had an incomplete message, it should have been:Chris Lattner2008-01-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | make the 'fp return in ST(0)' optimization smart enough to look through token factor nodes. THis allows us to compile testcases like CodeGen/X86/fp-stack-retcopy.ll into: _carg: subl $12, %esp call L_foo$stub fstpl (%esp) fldl (%esp) addl $12, %esp ret instead of: _carg: subl $28, %esp call L_foo$stub fstpl 16(%esp) movsd 16(%esp), %xmm0 movsd %xmm0, 8(%esp) fldl 8(%esp) addl $28, %esp ret Still not optimal, but much better and this is a trivial patch. Fixing the rest requires invasive surgery that is is not llvm 2.2 material. llvm-svn: 46054
* make the 'fp return in ST(0)' optimization smart enough to Chris Lattner2008-01-161-1/+1
| | | | | | look through token factor llvm-svn: 46053
* various whitespace cleanups, no functionality change.Chris Lattner2008-01-161-7/+7
| | | | llvm-svn: 46052
* Factor the ReachesChainWithoutSideEffects out of dag combiner into Chris Lattner2008-01-162-28/+32
| | | | | | | a public SDOperand::reachesChainWithoutSideEffects method. No functionality change. llvm-svn: 46050
* Do not strip llvm.used values.Devang Patel2008-01-161-3/+25
| | | | llvm-svn: 46045
* Missed file from previous checkin.Dale Johannesen2008-01-151-0/+1
| | | | llvm-svn: 46030
* Fix and enable EH for x86-64 Darwin. AddsDale Johannesen2008-01-154-13/+26
| | | | | | | | | ShortenEHDataFor64Bits as a not-very-accurate abstraction to cover all the changes in DwarfWriter. Some cosmetic changes to Darwin assembly code for gcc testsuite compatibility. llvm-svn: 46029
* Move some calls to getVRegDef higher in the callgraph, so they don't get ↵Owen Anderson2008-01-151-11/+11
| | | | | | executed as frequently in performance sensitive code. llvm-svn: 46027
* improve compatibility with mingw, patch by Alain FrischChris Lattner2008-01-151-1/+1
| | | | llvm-svn: 46026
* If someone wants to implement ppc TRAP, they can go for it :)Chris Lattner2008-01-151-0/+1
| | | | llvm-svn: 46019
* The type of the 'abort' node should be pointer type (becauseChris Lattner2008-01-151-1/+2
| | | | | | | it's a function pointer) not MVT::Other. This fixes builtin_trap lowering on ppc, alpha, ia64 llvm-svn: 46018
* rename SDTRet -> SDTNone.Chris Lattner2008-01-157-13/+11
| | | | | | Move definition of 'trap' sdnode up from x86 instrinfo to targetselectiondag.td. llvm-svn: 46017
* Remove DefInst from LiveVariables::VarInfo. Use the facilities on ↵Owen Anderson2008-01-154-38/+20
| | | | | | MachineRegisterInfo instead. llvm-svn: 46016
* no need to expand ISD::TRAP to X86ISD::TRAP, just match ISD::TRAP.Chris Lattner2008-01-153-17/+6
| | | | llvm-svn: 46015
* Add support for targets that have a legal ISD::TRAP.Chris Lattner2008-01-152-4/+12
| | | | llvm-svn: 46014
* Fix JIT encoding of trap/ud2 instructionAnton Korobeynikov2008-01-151-2/+1
| | | | llvm-svn: 46012
* Reformatted. It was confusing the other way. No functionality change.Bill Wendling2008-01-151-2/+3
| | | | llvm-svn: 46009
* Oops. Forgot to commit this.Evan Cheng2008-01-151-5/+12
| | | | llvm-svn: 46002
* For PR1839: add initial support for __builtin_trap. llvm-gcc part is missedAnton Korobeynikov2008-01-156-2/+49
| | | | | | as well as PPC codegen llvm-svn: 46001
* Rename CCIfStruct to CCIfByVal and CCStructAssign to CCPassByVal. Remove ↵Evan Cheng2008-01-152-10/+11
| | | | | | unused parameters of CCStructAssign and add size and alignment requirement info. llvm-svn: 45997
* Both x86-32 and x86-64 handle byval parameter attributes.Evan Cheng2008-01-151-4/+9
| | | | llvm-svn: 45996
* ByVal stack slot alignment should be at least as large as pointer ABI alignment.Evan Cheng2008-01-151-1/+3
| | | | llvm-svn: 45995
* Simplify CallInst::hasByValArgument using a new method.Duncan Sands2008-01-141-4/+1
| | | | llvm-svn: 45974
* I noticed that the trampoline straightening transformation couldDuncan Sands2008-01-142-21/+35
| | | | | | | | | drop attributes on varargs call arguments. Also, it could generate invalid IR if the transformed call already had the 'nest' attribute somewhere (this can never happen for code coming from llvm-gcc, but it's a theoretical possibility). Fix both problems. llvm-svn: 45973
* don't create the post-ra scheduler unless it is enabled.Chris Lattner2008-01-142-17/+8
| | | | llvm-svn: 45972
* remove dead #includeChris Lattner2008-01-141-1/+0
| | | | llvm-svn: 45971
* Improve the FP stackifier to decide all on its own whether Chris Lattner2008-01-141-23/+30
| | | | | | | | | an instruction kills a register or not. This is cheap and easy to do now that instructions record this on their flags, and this eliminates the second pass of LiveVariables from the x86 backend. This speeds up a release llc by ~2.5%. llvm-svn: 45955
* Simplify code.Evan Cheng2008-01-141-4/+1
| | | | llvm-svn: 45950
* Fix the miscompilation of MiBench/consumer-lame that was exposed by Evan'sChris Lattner2008-01-141-59/+97
| | | | | | | byval work. This miscompilation is due to the program indexing an array out of range and us doing a transformation that broke this. llvm-svn: 45949
* The isNotSuitableForSRA property is now dead, don't compute it.Chris Lattner2008-01-141-45/+1
| | | | llvm-svn: 45948
* Change SRAGlobal to not depend on isNotSuitableForSRA, which makes it very Chris Lattner2008-01-141-2/+75
| | | | | | difficult to understand the invariants. llvm-svn: 45947
* Make the 'shrink global to bool' optimization more self contained, and thus Chris Lattner2008-01-141-10/+25
| | | | | | easier to show that its safe. No functionality change. llvm-svn: 45946
* Turn a memcpy from a double* into a load/store of double instead ofChris Lattner2008-01-141-9/+46
| | | | | | | | | | a load/store of i64. The later prevents promotion/scalarrepl of the source and dest in many cases. This fixes the 300% performance regression of the byval stuff on stepanov_v1p2. llvm-svn: 45945
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