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231 Commits

Author SHA1 Message Date
Dan Gohman
e75704369d Revert 107840 107839 107813 107804 107800 107797 107791. 
Debug info intrinsics win for now.

llvm-svn: 107850
 2010-07-08 01:00:56 +00:00
Dan Gohman
e7ccc51cc1 Implement bottom-up fast-isel. This has the advantage of not requiring 
a separate DCE pass over MachineInstrs.

llvm-svn: 107804
 2010-07-07 19:20:32 +00:00
Dan Gohman
2d4d01d0de Add X86FastISel support for return statements. This entails refactoring 
a bunch of stuff, to allow the target-independent calling convention
logic to be employed.

llvm-svn: 107800
 2010-07-07 18:32:53 +00:00
Dan Gohman
e784616fbb Move FunctionLoweringInfo.h out into include/llvm/CodeGen. This will 
allow target-specific fast-isel code to make use of it directly.

llvm-svn: 107787
 2010-07-07 16:01:37 +00:00
Dan Gohman
fe7532a308 Split the SDValue out of OutputArg so that SelectionDAG-independent 
code can do calling-convention queries. This obviates OutputArgReg.

llvm-svn: 107786
 2010-07-07 15:54:55 +00:00
Dan Gohman
ee0cb70381 CanLowerReturn doesn't need a SelectionDAG; it just needs an LLVMContext. 
SelectBasicBlock doesn't needs its BasicBlock argument.

llvm-svn: 107712
 2010-07-06 22:19:37 +00:00
Devang Patel
a3ca21b228 Propagate debug loc. 
llvm-svn: 107710
 2010-07-06 22:08:15 +00:00
Chris Lattner
2c0315a0f3 random tidying 
llvm-svn: 107612
 2010-07-05 05:36:21 +00:00
Dale Johannesen
4d887f7ca7 Propagate the AlignStack bit in InlineAsm's to the 
PrologEpilog code, and use it to determine whether
the asm forces stack alignment or not.  gcc consistently
does not do this for GCC-style asms; Apple gcc inconsistently
sometimes does it for asm blocks.  There is no
convenient place to put a bit in either the SDNode or
the MachineInstr form, so I've added an extra operand
to each; unlovely, but it does allow for expansion for
more bits, should we need it.  PR 5125.  Some
existing testcases are affected.
The operand lists of the SDNode and MachineInstr forms
are indexed with awesome mnemonics, like "2"; I may
fix this someday, but not now.  I'm not making it any
worse.  If anyone is inspired I think you can find all
the right places from this patch.

llvm-svn: 107506
 2010-07-02 20:16:09 +00:00
Dan Gohman
93f5920914 Rename CreateReg to CreateRegs, and MakeReg to CreateReg. 
llvm-svn: 107451
 2010-07-02 00:10:16 +00:00
Dan Gohman
85e02e9340 Rename CreateRegForValue to CreateReg, and change its argument 
from a Value to a Type, because it doesn't actually care about
the Value.

llvm-svn: 107383
 2010-07-01 03:55:39 +00:00
Dan Gohman
d432223163 Reapply r106422, splitting the code for materializing a value out of 
SelectionDAGBuilder::getValue into a helper function, with fixes to
use DenseMaps safely.

llvm-svn: 107371
 2010-07-01 01:59:43 +00:00
Dan Gohman
9576645a84 Don't use operator[] here, because it's not desirable to insert a default 
value if the search fails.

llvm-svn: 107368
 2010-07-01 01:33:21 +00:00
Duncan Sands
945a347478 Remove an unused variable. The call to getRoot has side-effects, so 
this could break something (but doesn't seem to).

llvm-svn: 107295
 2010-06-30 17:22:28 +00:00
Gabor Greif
f69acfe133 use ArgOperand API 
llvm-svn: 107279
 2010-06-30 12:55:46 +00:00
Duncan Sands
6d28e73acc Remove initialized but otherwise unused variables. 
llvm-svn: 107127
 2010-06-29 11:22:26 +00:00
Dale Johannesen
ce97d55ad9 The hasMemory argument is irrelevant to how the argument 
for an "i" constraint should get lowered; PR 6309.  While
this argument was passed around a lot, this is the only
place it was used, so it goes away from a lot of other
places.

llvm-svn: 106893
 2010-06-25 21:55:36 +00:00
Duncan Sands
2dc70bea54 Remove variables which are assigned to but for which the value 
is not used.  Spotted by gcc-4.6.

llvm-svn: 106854
 2010-06-25 14:48:39 +00:00
Gabor Greif
eba0be7dc9 use ArgOperand API 
llvm-svn: 106836
 2010-06-25 09:38:13 +00:00
Dan Gohman
8a84cd57ae Simplify this code; switch lowering shouldn't produce cases 
which trivially fold away.

llvm-svn: 106765
 2010-06-24 17:08:31 +00:00
Dan Gohman
0695e09b09 Optimize the "bit test" code path for switch lowering in the 
case where the bit mask has exactly one bit.

llvm-svn: 106716
 2010-06-24 02:06:24 +00:00
Dan Gohman
bbc29ea821 Revert r106422, which is breaking the non-fast-isel path. 
llvm-svn: 106423
 2010-06-21 16:02:28 +00:00
Dan Gohman
f64fdd69d0 More changes for non-top-down fast-isel. 
Split the code for materializing a value out of
SelectionDAGBuilder::getValue into a helper function, so that it can
be used in other ways. Add a new getNonRegisterValue function which
uses it, for use in code which doesn't want a CopyFromReg even
when FuncMap.ValueMap already has an entry for it.

llvm-svn: 106422
 2010-06-21 15:13:54 +00:00
Dan Gohman
f1d8304fe3 Eliminate unnecessary uses of getZExtValue(). 
llvm-svn: 106279
 2010-06-18 14:22:04 +00:00
Devang Patel
b0c76394a3 Keep track of incoming debug value of unused argument. 
Radar 7927666.

llvm-svn: 105285
 2010-06-01 19:59:01 +00:00
Dan Gohman
4db93c9700 Reorder some code in SelectionDAGBuilder. 
llvm-svn: 105105
 2010-05-29 17:53:24 +00:00
Dan Gohman
d16aa541af SelectionDAG shouldn't have a FunctionLoweringInfo member. RegsForValue 
shouldn't have a TargetLoweringInfo member. And FunctionLoweringInfo::set
doesn't needs its EnableFastISel argument.

llvm-svn: 105101
 2010-05-29 17:03:36 +00:00
Dan Gohman
2140a74979 Eliminate the restriction that the array size in an alloca must be i32. 
This will help reduce the amount of casting required on 64-bit targets.

llvm-svn: 104911
 2010-05-28 01:14:11 +00:00
Jim Grosbach
c9f532dddc back out 104862/104869. Can reuse stacksave after all. Very cool. 
llvm-svn: 104897
 2010-05-27 23:11:57 +00:00
Jim Grosbach
b68dfb45f5 hook ISD::STACKADDR to an intrinsic 
llvm-svn: 104869
 2010-05-27 18:52:11 +00:00
Jim Grosbach
c98892fdaa Adjust eh.sjlj.setjmp to properly have a chain and to have an opcode entry in 
ISD::. No functional change.

llvm-svn: 104734
 2010-05-26 20:22:18 +00:00
Jim Grosbach
bd9485db63 Implement eh.sjlj.longjmp for ARM. Clean up the intrinsic a bit. 
Followups: docs patch for the builtin and eh.sjlj.setjmp cleanup to match
longjmp.

llvm-svn: 104419
 2010-05-22 01:06:18 +00:00
Duncan Sands
6c5e4355bb I got tired of VISIBILITY_HIDDEN colliding with the gcc enum. Rename it 
to LLVM_LIBRARY_VISIBILITY and introduce LLVM_GLOBAL_VISIBILITY, which is
the opposite, for future use by dragonegg.

llvm-svn: 103495
 2010-05-11 20:16:09 +00:00
Douglas Gregor
6739a89117 Fixes for Microsoft Visual Studio 2010, from Steven Watanabe! 
llvm-svn: 103457
 2010-05-11 06:17:44 +00:00
Devang Patel
2ae3397536 Verify variable directly. 
llvm-svn: 103305
 2010-05-07 22:04:20 +00:00
Devang Patel
92b21cad5d Use getValue() for PHINodes when direct NodeMap access does not work. 
llvm-svn: 103126
 2010-05-05 22:29:00 +00:00
Dan Gohman
63f31115cd Don't pass SDValues by non-const reference unless they may be 
modified.

llvm-svn: 102816
 2010-05-01 00:33:16 +00:00
Dan Gohman
5d059718c9 Reorgnaize more switch code lowering to clean up some tricky 
code, and to eliminate the need for the SelectionDAGBuilder
state to be live during CodeGenAndEmitDAG calls.

Call SDB->clear() before CodeGenAndEmitDAG calls instead of
before it, and move the CurDAG->clear() out of SelectionDAGBuilder,
which doesn't own the DAG, and into CodeGenAndEmitDAG.

llvm-svn: 102814
 2010-05-01 00:25:44 +00:00
Dan Gohman
f0514717cd Delete the EdgeMapping variable itself. 
llvm-svn: 102810
 2010-05-01 00:02:20 +00:00
Devang Patel
0395553e35 Refactor. 
llvm-svn: 102661
 2010-04-29 20:40:36 +00:00
Devang Patel
a46953d281 DO not push DBG_VALUE machine instructions for inlined fuction arguments in entry block. 
llvm-svn: 102653
 2010-04-29 18:50:36 +00:00
Evan Cheng
923679f929 Re-enable 102565 with fixes. 
llvm-svn: 102602
 2010-04-29 06:33:38 +00:00
Evan Cheng
d65a1e782b Temporarily disable my changes to unbreak the build. 
llvm-svn: 102590
 2010-04-29 03:34:19 +00:00
Evan Cheng
5fb45a2b85 Do not generate duplicate dbg_value instructions for function arguments. 
llvm-svn: 102585
 2010-04-29 01:40:30 +00:00
Evan Cheng
70a0145d7c Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block. 
llvm-svn: 102581
 2010-04-29 01:23:55 +00:00
Evan Cheng
f4336ebb2a Check Reg against zero. 
llvm-svn: 102573
 2010-04-29 00:59:34 +00:00
Devang Patel
bb728e17d3 tidy up. 
llvm-svn: 102558
 2010-04-28 23:24:13 +00:00
Evan Cheng
6e822459ed Replace r102368 with code that's less fragile. This creates DBG_VALUE instructions for function arguments early and insert them after instruction selection is done. 
llvm-svn: 102554
 2010-04-28 23:08:54 +00:00
Devang Patel
1a0bbe25e3 Ignore DBG_VALUE instructions that points to undef values. 
llvm-svn: 102463
 2010-04-27 20:54:45 +00:00
Dale Johannesen
eb61a7d616 Revert a small part of 102372; this fixes at least one 
of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.

llvm-svn: 102410
 2010-04-27 02:10:05 +00:00