Commit Graph

187 Commits

Author SHA1 Message Date
Dale Johannesen caca5488dc In inline asm treat indirect 'X' constraint as 'm'.
This may not be right in all cases, but it's better
than asserting which it was doing before.  PR 7528.

llvm-svn: 108268
2010-07-13 20:17:05 +00:00
Rafael Espindola a18c5a0e5e Fix a typo and fit in 80 columns. Found by Bob Wilson.
llvm-svn: 108164
2010-07-12 18:11:17 +00:00
Rafael Espindola a76eccf815 Fix va_arg for doubles. With this patch VAARG nodes always contain the
correct alignment information, which simplifies ExpandRes_VAARG a bit.

The patch introduces a new alignment information to TargetLoweringInfo. This is
needed since the two natural candidates cannot be used:

* The 's' in target data: If this is set to the minimal alignment of any
  argument, getCallFrameTypeAlignment would return 4 for doubles on ARM for
  example.
* The getTransientStackAlignment method. It is possible for an architecture to
  have argument less aligned than what we maintain the stack pointer.

llvm-svn: 108072
2010-07-11 04:01:49 +00:00
Dan Gohman d7b5ce3312 Reapply bottom-up fast-isel, with several fixes for x86-32:
- Check getBytesToPopOnReturn().
 - Eschew ST0 and ST1 for return values.
 - Fix the PIC base register initialization so that it doesn't ever
   fail to end up the top of the entry block.

llvm-svn: 108039
2010-07-10 09:00:22 +00:00
Bob Wilson 6586e9b203 --- Reverse-merging r107947 into '.':
U    utils/TableGen/FastISelEmitter.cpp
--- Reverse-merging r107943 into '.':
U    test/CodeGen/X86/fast-isel.ll
U    test/CodeGen/X86/fast-isel-loads.ll
U    include/llvm/Target/TargetLowering.h
U    include/llvm/Support/PassNameParser.h
U    include/llvm/CodeGen/FunctionLoweringInfo.h
U    include/llvm/CodeGen/CallingConvLower.h
U    include/llvm/CodeGen/FastISel.h
U    include/llvm/CodeGen/SelectionDAGISel.h
U    lib/CodeGen/LLVMTargetMachine.cpp
U    lib/CodeGen/CallingConvLower.cpp
U    lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
U    lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
U    lib/CodeGen/SelectionDAG/FastISel.cpp
U    lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
U    lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
U    lib/CodeGen/SelectionDAG/InstrEmitter.cpp
U    lib/CodeGen/SelectionDAG/TargetLowering.cpp
U    lib/Target/XCore/XCoreISelLowering.cpp
U    lib/Target/XCore/XCoreISelLowering.h
U    lib/Target/X86/X86ISelLowering.cpp
U    lib/Target/X86/X86FastISel.cpp
U    lib/Target/X86/X86ISelLowering.h

llvm-svn: 107987
2010-07-09 16:37:18 +00:00
Dan Gohman 0b5aa1cdd3 Re-apply bottom-up fast-isel, with fixes. Be very careful to avoid emitting
a DBG_VALUE after a terminator, or emitting any instructions before an EH_LABEL.

llvm-svn: 107943
2010-07-09 00:39:23 +00:00
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