Commit Graph

248 Commits

Author SHA1 Message Date
Chris Lattner 64634c36dd tidy up.
llvm-svn: 118896
2010-11-12 17:24:29 +00:00
Dan Gohman 6cf9bb45ad Remove the memmove->memcpy optimization from CodeGen. MemCpyOpt does this.
llvm-svn: 118789
2010-11-11 16:24:49 +00:00
Duncan Sands f5dda01f33 Inside the calling convention logic LocVT is always a simple
value type, so there is no point in passing it around using
an EVT.  Use the simpler MVT everywhere.  Rather than trying
to propagate this information maximally in all the code that
using the calling convention stuff, I chose to do a mainly
low impact change instead.

llvm-svn: 118167
2010-11-03 11:35:31 +00:00
Devang Patel bc741405a7 If value map does not have register for an argument then try to find frame index before giving up.
llvm-svn: 118022
2010-11-02 17:19:03 +00:00
Devang Patel 94f2a2578c Use frameindex, if available, as a last resort to emit debug info for a parameter.
llvm-svn: 118020
2010-11-02 17:01:30 +00:00
John Thompson e8360b7182 Inline asm multiple alternative constraints development phase 2 - improved basic logic, added initial platform support.
llvm-svn: 117667
2010-10-29 17:29:13 +00:00
Dale Johannesen e660f4d072 Use a MemIntrinsicSDNode for ISD::PREFETCH, which touches
memory, so a MachineMemOperand is useful (not propagated
into the MachineInstr yet).  No functional change except
for dump output.

llvm-svn: 117413
2010-10-26 23:11:10 +00:00
Devang Patel 05561e8b7b Assign source ordering to nodes created for StoreInst.
llvm-svn: 117404
2010-10-26 22:14:52 +00:00
Michael J. Spencer 0e36e0340a X86: Base _fltused on the FunctionType of the called value instead of the potentially null "CalledFunction". Thanks Duncan!
This is needed for indirect calls.

llvm-svn: 117061
2010-10-21 20:49:23 +00:00
Michael J. Spencer 83ce5f181f CodeGen-Windows: Only emit _fltused if a VarArg function is called with floating point args.
This should be the minimum set of functions that could possibly need it.

llvm-svn: 116978
2010-10-21 00:08:21 +00:00
Dan Gohman a94cc6dfe8 Make CodeGen TBAA-aware.
llvm-svn: 116890
2010-10-20 00:31:05 +00:00
Jim Grosbach bbdc5d2ef9 Add a pre-dispatch SjLj EH hook on the unwind edge for targets to do any
setup they require. Use this for ARM/Darwin to rematerialize the base
pointer from the frame pointer when required. rdar://8564268

llvm-svn: 116879
2010-10-19 23:27:08 +00:00
Michael J. Spencer 5e683250ee X86-Windows: Emit an undefined global __fltused symbol when targeting Windows
if any floating point arguments are passed to an external function.

llvm-svn: 116665
2010-10-16 08:25:41 +00:00
Michael J. Spencer d3ea25e66e Whitespace!
llvm-svn: 116664
2010-10-16 08:25:21 +00:00
Dan Gohman aadc5596f1 ComputeLinearIndex doesn't need its TLI argument.
llvm-svn: 115792
2010-10-06 16:18:29 +00:00
Devang Patel d3fe5fa5d1 Fix code gen crash reported in PR 8235. We still lose debug info for the unused argument here. This is a known limitation recorded debuginfo-tests/trunk/dbg-declare2.ll function 'f6' test case.
llvm-svn: 115323
2010-10-01 19:00:44 +00:00
Gabor Greif 47a3b8c30b typo
llvm-svn: 115310
2010-10-01 10:32:19 +00:00
Chris Lattner f08bfdc29f fix typo
llvm-svn: 115300
2010-10-01 06:54:02 +00:00
Dale Johannesen dd224d2333 Massive rewrite of MMX:
The x86_mmx type is used for MMX intrinsics, parameters and
return values where these use MMX registers, and is also
supported in load, store, and bitcast.

Only the above operations generate MMX instructions, and optimizations
do not operate on or produce MMX intrinsics. 

MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into
smaller pieces.  Optimizations may occur on these forms and the
result casted back to x86_mmx, provided the result feeds into a
previous existing x86_mmx operation.

The point of all this is prevent optimizations from introducing
MMX operations, which is unsafe due to the EMMS problem.

llvm-svn: 115243
2010-09-30 23:57:10 +00:00
Jakob Stoklund Olesen 665aa6efcc When isel is emitting instructions for an x86 target without CMOV, the CFG is
edited during emission.

If the basic block ends in a switch that gets lowered to a jump table, any
phis at the default edge were getting updated wrong. The jump table data
structure keeps a pointer to the header blocks that wasn't getting updated
after the MBB is split.

This bug was exposed on 32-bit Linux when disabling critical edge splitting in
codegen prepare.

The fix is to uipdate stale MBB pointers whenever a block is split during
emission.

llvm-svn: 115191
2010-09-30 19:44:31 +00:00
John Thompson 8118ef8d3d Fix for test/CodeGen/PowerPC/2008-10-17-AsmMatchingOperands.ll crash.
llvm-svn: 114767
2010-09-24 22:24:05 +00:00
Michael J. Spencer ded5f66813 Get rid of pop_macro warnings on MSVC.
llvm-svn: 114750
2010-09-24 19:48:47 +00:00
Evan Cheng 6b8b2b7312 Revert 114634 for now since buildbot claim it broke Clang self-hosting. I doubt it but it's possible it's exposing another bug somewhere.
llvm-svn: 114681
2010-09-23 18:32:19 +00:00
Evan Cheng b6d175a39d Follow up to r114630. Do not optimize away unconditional branch following a conditional one.
llvm-svn: 114634
2010-09-23 07:18:35 +00:00
Evan Cheng 79687dda9a SDISel should not optimize a unconditional branch following a conditional branch
when the unconditional branch destination is the fallthrough block. The
canonicalization makes it easier to allow optimizations on DAGs to invert
conditional branches. The branch folding pass (and AnalyzeBranch) will clean up
the unnecessary unconditional branches later.

This is one of the patches leading up to disabling codegen prepare critical edge
splitting.

llvm-svn: 114630
2010-09-23 06:51:55 +00:00
Chris Lattner a4f199720d finish pushing MachinePointerInfo through selectiondags. At this point,
I think I've audited all uses, so it should be dependable for address spaces,
and the pointer+offset info should also be accurate when there.

llvm-svn: 114464
2010-09-21 18:58:22 +00:00
Bob Wilson 5549d496dd Define the TargetLowering::getTgtMemIntrinsic hook for ARM so that NEON load
and store intrinsics are represented with MemIntrinsicSDNodes.

llvm-svn: 114454
2010-09-21 17:56:22 +00:00
Chris Lattner 1ffcf527c7 continue MachinePointerInfo'izing, eliminating use of one of the old
getLoad overloads.

llvm-svn: 114443
2010-09-21 16:36:31 +00:00
Chris Lattner 2510de2bea reimplement memcpy/memmove/memset lowering to use MachinePointerInfo
instead of srcvalue/offset pairs.  This corrects SV info for mem 
operations whose size is > 32-bits.

llvm-svn: 114401
2010-09-21 05:40:29 +00:00
Chris Lattner d2d58ada70 simplify interface to SelectionDAG::getMemIntrinsicNode, making it take a MachinePointerInfo
llvm-svn: 114397
2010-09-21 04:57:15 +00:00
Chris Lattner 15d84c460a chagne interface to SelectionDAG::getAtomic to take a MachinePointerInfo,
eliminating some weird "infer a frame address" logic which was dead.

llvm-svn: 114396
2010-09-21 04:53:42 +00:00
Devang Patel 46b96c4ba0 Check bb to ensure that alloca is in separate basic block.
This fixes funcargs.exp regression reported by gdb testsuite.

llvm-svn: 113992
2010-09-15 18:13:55 +00:00
Devang Patel da25de8096 If dbg.declare from non-entry block is using alloca from entry block then use offset available in StaticAllocaMap to emit DBG_VALUE. Right now, this has no material impact because varible info also collected using offset table maintained in machine module info.
llvm-svn: 113967
2010-09-15 14:48:53 +00:00
John Thompson 1094c80281 Added skeleton for inline asm multiple alternative constraint support.
llvm-svn: 113766
2010-09-13 18:15:37 +00:00
Devang Patel 3bffd52d78 Detect undef value early and save unnecessary NodeMap query.
llvm-svn: 112864
2010-09-02 21:29:42 +00:00
Devang Patel 98d3edfe2a Tidy up.
llvm-svn: 112858
2010-09-02 21:02:27 +00:00
Devang Patel 86ec8b3a3f Reapply r112623. Included additional check for unused byval argument.
llvm-svn: 112659
2010-08-31 22:22:42 +00:00
Devang Patel 529f248eb4 Revert r112623. It is causing self host build failures.
llvm-svn: 112631
2010-08-31 19:41:03 +00:00
Devang Patel 8559932d36 Remember byval argument's frame index during argument lowering and use this info to emit debug info.
Fixes Radar 8367011.

llvm-svn: 112623
2010-08-31 18:50:09 +00:00
Devang Patel 417d72823a Offset is not always unsigned number.
llvm-svn: 112584
2010-08-31 06:12:08 +00:00
Chris Lattner 13ee795c42 remove unions from LLVM IR. They are severely buggy and not
being actively maintained, improved, or extended.

llvm-svn: 112356
2010-08-28 04:09:24 +00:00
Dan Gohman e06905d1f0 Completely disable tail calls when fast-isel is enabled, as fast-isel
doesn't currently support dealing with this.

llvm-svn: 112341
2010-08-28 00:51:03 +00:00
Devang Patel f2855b147f Simplify.
llvm-svn: 112305
2010-08-27 22:25:51 +00:00
Devang Patel b12ff5999e Revert r112213. It is not needed.
llvm-svn: 112242
2010-08-26 23:35:15 +00:00
Devang Patel ea134f56b1 If node is not available then use FuncInfo.ValueMap to emit debug info for byval parameter.
llvm-svn: 112238
2010-08-26 22:53:27 +00:00
Devang Patel 42b4ac7ed3 Speculatively revert r112207.
llvm-svn: 112216
2010-08-26 20:33:42 +00:00
Devang Patel 977057f481 80 col.
llvm-svn: 112215
2010-08-26 20:32:32 +00:00
Devang Patel 384fa91deb Update DanglingDebugInfo so that it can be used to track llvm.dbg.declare also.
llvm-svn: 112213
2010-08-26 20:06:46 +00:00
Devang Patel ab596a637c Donot forget to resolve dangling debug info in a case where virtual register, used for a value, is initialized after a dbg intrinsic is seen.
llvm-svn: 112207
2010-08-26 18:36:14 +00:00
Chris Lattner f6418b804e zap dead code.
llvm-svn: 112155
2010-08-26 02:57:35 +00:00