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170 Commits

Author SHA1 Message Date
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
Dale Johannesen 59a438560c Remove crufty comments. 
llvm-svn: 102380
 2010-04-26 20:48:54 +00:00
Dale Johannesen e098352ed1 Add DBG_VALUE handling for byval parameters; this 
produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.

llvm-svn: 102372
 2010-04-26 20:06:49 +00:00
Dan Gohman 5b43aa0ddd Sink SelectionDAGBuilder's HandlePHINodesInSuccessorBlocks down 
into SelectionDAGBuilder itself.

llvm-svn: 102128
 2010-04-22 20:55:53 +00:00
Dan Gohman c594eab10f Move HandlePHINodesInSuccessorBlocks functions out of SelectionDAGISel 
and into SelectionDAGBuilder and FastISel.

llvm-svn: 102123
 2010-04-22 20:46:50 +00:00
Dan Gohman fd81254190 Move PHINodesToUpdate out of SelectionDAGBuilder and into 
FunctionLoweringInfo, as it isn't SelectionDAG-specific. This isn't
completely natural, as PHI node state is not per-function but rather
per-basic-block, however there's currently no other convenient
per-basic-block state to group it with.

llvm-svn: 102109
 2010-04-22 19:55:20 +00:00
Dan Gohman 450aa64fc1 Move several SelectionDAG-independent utility functions out of the 
SelectionDAG directory and into a new Analysis.cpp file.

llvm-svn: 101975
 2010-04-21 01:22:34 +00:00
Dan Gohman 950fe784be Sink the CopyToExportRegsIfNeeded calls out of SelectionDAGISel 
into SelectionDAGBuilder. This avoids a separate pass over the
instructions, and has the side effect of providing debug location
information to the copy.

llvm-svn: 101906
 2010-04-20 15:03:56 +00:00
Dan Gohman f41ad478ca Don't send PHI nodes down to SelectionDAGBuilder of FastISel, since 
they end up doing nothing.

llvm-svn: 101904
 2010-04-20 15:00:41 +00:00
Dan Gohman e450d7444d Sink DebugLoc handling out of SelectionDAGISel into FastISel and 
SelectionDAGBuilder, where it doesn't have to be as complicated.

llvm-svn: 101848
 2010-04-20 00:48:35 +00:00
Dan Gohman 7c0303a059 Eliminate the CurMBB member from SelectionDAGBuilder. For places that 
need it, just pass around the parent block of the current instruction
explicitly.

llvm-svn: 101822
 2010-04-19 22:41:47 +00:00
Dan Gohman c334960f16 Code that needs a TargetMachine should have access to one directly, rather 
than just getting one through a TargetLowering.

llvm-svn: 101802
 2010-04-19 19:05:59 +00:00