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86 Commits

Author SHA1 Message Date
Evan Cheng 738e920edf Code refactoring: pull SchedPreference enum from TargetLowering.h to TargetMachine.h and put it in its own namespace. 
llvm-svn: 104147
 2010-05-19 20:19:50 +00:00
Dan Gohman 25c1653700 Get rid of the EdgeMapping map. Instead, just check for BasicBlock 
changes before doing phi lowering for switches.

llvm-svn: 102809
 2010-05-01 00:01:06 +00:00
Dan Gohman 21cea8ac2e Use const qualifiers with TargetLowering. This eliminates several 
const_casts, and it reinforces the design of the Target classes being
immutable.

SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.

And PIC16's AsmPrinter no longer uses TargetLowering.

llvm-svn: 101635
 2010-04-17 15:26:15 +00:00
Dan Gohman bcaf681cde Add const qualifiers to CodeGen's use of LLVM IR constructs. 
llvm-svn: 101334
 2010-04-15 01:51:59 +00:00
Mon P Wang c576ee9040 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100304
 2010-04-04 03:10:48 +00:00
Mon P Wang 999c1b927b Revert r100191 since it breaks objc in clang 
llvm-svn: 100199
 2010-04-02 18:43:02 +00:00
Mon P Wang a972ab8564 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100191
 2010-04-02 18:04:15 +00:00
Bob Wilson 6f7fd28824 Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots. 
llvm-svn: 99948
 2010-03-30 22:27:04 +00:00
Mon P Wang 7460571381 Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, 
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.

llvm-svn: 99928
 2010-03-30 20:55:56 +00:00
Richard Osborne 4780109254 Add dag combine to simplify lmul(x, 0, a, b) 
llvm-svn: 98258
 2010-03-11 16:26:35 +00:00
Richard Osborne 29ffbf123f Switch XCore over to using inline jump table entries. 
llvm-svn: 98256
 2010-03-11 14:58:56 +00:00
Richard Osborne 54a2c32670 Handle MVT::i64 type in DAG combine for ISD::ADD. Fold 64 bit 
expression add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if all
operands are zero extended.

llvm-svn: 98168
 2010-03-10 18:12:27 +00:00
Richard Osborne c99b9b2193 Fix checking of intermediates having one use in isADDADDMUL 
llvm-svn: 98164
 2010-03-10 17:16:29 +00:00
Richard Osborne 5a457de4b2 Extract recognition of patterns such as add(add(mul(x,y),a),b) 
into a seperate function.

llvm-svn: 98162
 2010-03-10 17:10:35 +00:00
Richard Osborne 11ec7ee125 Fix thinko. 
llvm-svn: 98158
 2010-03-10 16:27:11 +00:00
Richard Osborne 1a396d53ed Fold add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if the intermediate 
results are unused elsewhere.

llvm-svn: 98157
 2010-03-10 16:19:31 +00:00
Richard Osborne f57aea3d38 Prefer LMUL to MACCU as LMUL has no tied operands. 
llvm-svn: 98153
 2010-03-10 13:27:10 +00:00
Richard Osborne 0012bc1e41 Custom lower (S|U)MUL_LOHI -> MACC(S|U) 
llvm-svn: 98152
 2010-03-10 13:20:07 +00:00
Richard Osborne ef00c1bd6f Fix indentation 
llvm-svn: 98151
 2010-03-10 11:42:05 +00:00
Richard Osborne 54dfa01adc Lower add (mul a, b), c into MACCU / MACCS nodes which translate 
directly to the maccu / maccs instructions. We handle this in
ExpandADDSUB since after type legalisation it is messy to
recognise these operations.

llvm-svn: 98150
 2010-03-10 11:41:08 +00:00
Richard Osborne c420c4cb4e In cases where the carry / borrow unused converted ladd / lsub 
to an add or a sub.

llvm-svn: 98059
 2010-03-09 16:34:25 +00:00
Richard Osborne c5ff63d70f Canonicalize ladd constant to RHS. 
llvm-svn: 98058
 2010-03-09 16:13:57 +00:00
Richard Osborne f4e76cf44d Add DAG combine for ladd / lsub. 
llvm-svn: 98057
 2010-03-09 16:07:47 +00:00
Bill Wendling 78c5b7a76d Remove dead parameter passing. 
llvm-svn: 97536
 2010-03-02 01:55:18 +00:00
Richard Osborne 333300e0df Fix XCoreTargetLowering::isLegalAddressingMode() to handle VoidTy. 
Previously LoopStrengthReduce would sometimes be unable to find
a legal formula, causing an assertion failure.

llvm-svn: 97226
 2010-02-26 16:44:51 +00:00
Richard Osborne e3eb3105d9 Remove unused lowering function LowerJumpTable 
llvm-svn: 96943
 2010-02-23 14:17:20 +00:00
Richard Osborne f578196968 Lower BR_JT on the XCore to a jump into a series of jump instructions. 
llvm-svn: 96942
 2010-02-23 13:25:07 +00:00
David Greene 68ea4da8cb Remove an assumption of default arguments. This is in anticipation of a 
change to SelectionDAG build APIs.

llvm-svn: 96227
 2010-02-15 16:49:52 +00:00
Evan Cheng 6f36a083ef Revert 95130. 
llvm-svn: 95160
 2010-02-02 23:55:14 +00:00
Evan Cheng c1b0116ff1 Pass callsite return type to TargetLowering::LowerCall and use that to check sibcall eligibility. 
llvm-svn: 95130
 2010-02-02 21:29:10 +00:00
Evan Cheng 67a69dd2ed Eliminate target hook IsEligibleForTailCallOptimization. 
Target independent isel should always pass along the "tail call" property. Change
target hook LowerCall's parameter "isTailCall" into a refernce. If the target
decides it's impossible to honor the tail call request, it should set isTailCall
to false to make target independent isel happy.

llvm-svn: 94626
 2010-01-27 00:07:07 +00:00
Bill Wendling 919b7aab2e Add more plumbing. This time in the LowerArguments and "get" functions which 
return partial registers. This affected the back-end lowering code some.

Also patch up some places I missed before in the "get" functions.

llvm-svn: 91880
 2009-12-22 02:10:19 +00:00
Dan Gohman de5dea869f Remove ISD::DEBUG_LOC and ISD::DBG_LABEL, which are no longer used. 
Note that "hasDotLocAndDotFile"-style debug info was already broken;
people wanting this functionality should implement it in the
AsmPrinter/DwarfWriter code.

llvm-svn: 89711
 2009-11-23 23:20:51 +00:00
Devang Patel ed85e12da6 We are not using DBG_STOPPOINT anymore. 
llvm-svn: 89536
 2009-11-21 02:46:55 +00:00
Dan Gohman 7a6611793f Target-independent support for TargetFlags on BlockAddress operands, 
and support for blockaddresses in x86-32 PIC mode.

llvm-svn: 89506
 2009-11-20 23:18:13 +00:00
Richard Osborne 3bd09434a6 Add XCore support for indirectbr / blockaddress. 
llvm-svn: 89273
 2009-11-18 23:20:42 +00:00
Richard Osborne d5f2745965 Add XCore support for arbitrary-sized aggregate returns. 
llvm-svn: 88802
 2009-11-14 19:33:35 +00:00
David Greene 1fbe054450 Add a bool flag to StackObjects telling whether they reference spill 
slots.  The AsmPrinter will use this information to determine whether to
print a spill/reload comment.

Remove default argument values.  It's too easy to pass a wrong argument
value when multiple arguments have default values.  Make everything
explicit to trap bugs early.

Update all targets to adhere to the new interfaces..

llvm-svn: 87022
 2009-11-12 20:49:22 +00:00
Richard Osborne 02fda54e8f Add missing names for the XCore specific LADD and LSUB nodes. 
llvm-svn: 83556
 2009-10-08 17:14:57 +00:00
Richard Osborne d7b887410d Remove xs1a subtarget. xs1a is a preproduction device used in 
early development boards which is no longer supported in the
XMOS toolchain.

llvm-svn: 83381
 2009-10-06 16:01:09 +00:00
Evan Cheng 9827ad39a7 Fix PR4926. When target hook EmitInstrWithCustomInserter() insert new basic blocks and update CFG, it should also inform sdisel of the changes so the phi source operands will come from the right basic blocks. 
llvm-svn: 82311
 2009-09-19 09:51:03 +00:00
Evan Cheng 270d0f986f Enhance EmitInstrWithCustomInserter() so target can specify CFG changes that sdisel will use to properly complete phi nodes. 
Not functionality change yet.

llvm-svn: 82273
 2009-09-18 21:02:19 +00:00
Sandeep Patel 68c5f477fa Retype from unsigned to CallingConv::ID accordingly. Approved by Bob Wilson. 
llvm-svn: 80773
 2009-09-02 08:44:58 +00:00
Bill Wendling bae6b2cca3 Reapply r79127. It was fixed by d0k. 
llvm-svn: 79136
 2009-08-15 21:21:19 +00:00
Bill Wendling d3fade656f Revert r79127. It was causing compilation errors. 
llvm-svn: 79135
 2009-08-15 21:14:01 +00:00
Evan Cheng 52d4e64711 Change allowsUnalignedMemoryAccesses to take type argument since some targets 
support unaligned mem access only for certain types. (Should it be size
instead?)

ARM v7 supports unaligned access for i16 and i32, some v6 variants support it
as well.

llvm-svn: 79127
 2009-08-15 19:23:44 +00:00
Owen Anderson 55f1c09e31 Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Owen Anderson 117c9e8497 Add contexts to some of the MVT APIs. No functionality change yet, just the infrastructure work needed to get the contexts to where they need to be first. 
llvm-svn: 78759
 2009-08-12 00:36:31 +00:00
Owen Anderson 9f94459d24 Split EVT into MVT and EVT, the former representing _just_ a primitive type, while 
the latter is capable of representing either a primitive or an extended type.

llvm-svn: 78713
 2009-08-11 20:47:22 +00:00
Owen Anderson 53aa7a960c Rename MVT to EVT, in preparation for splitting SimpleValueType out into its own struct type. 
llvm-svn: 78610
 2009-08-10 22:56:29 +00:00