Commit Graph

79 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
65766ce7df Clean up TargetOpcodes.h a bit, and limit the number of places where the full
list of predefined instructions appear. Add some consistency checks.

Ideally, TargetOpcodes.h should be produced by TableGen from Target.td, but it
is hardly worth the effort.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107520 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-02 21:44:22 +00:00
Evan Cheng
b55c8bed9d Add a pseudo instruction REG_SEQUENCE that takes a list of registers and
sub-register indices and outputs a single super register which is formed from
a consecutive sequence of registers.

This is used as register allocation / coalescing aid and it is useful to
represent instructions that output register pairs / quads. For example,
v1024, v1025 = vload <address>
where v1024 and v1025 forms a register pair.

This really should be modelled as
v1024<3>, v1025<4> = vload <address>
but it would violate SSA property before register allocation is done.

Currently we use insert_subreg to form the super register:
v1026 = implicit_def
v1027 - insert_subreg v1026, v1024, 3
v1028 = insert_subreg v1027, v1025, 4
...
      = use v1024
      = use v1028

But this adds pseudo live interval overlap between v1024 and v1025.

We can now modeled it as
v1024, v1025 = vload <address>
v1026 = REG_SEQUENCE v1024, 3, v1025, 4
...
      = use v1024
      = use v1026

After coalescing, it will be
v1026<3>, v1025<4> = vload <address>
...
      = use v1026<3>
      = use v1026


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102815 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 00:28:44 +00:00
Chris Lattner
75361b69f3 rename llvm::llvm_report_error -> llvm::report_fatal_error
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100709 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 22:58:41 +00:00
Chris Lattner
f65027842e change Target.getInstructionsByEnumValue to return a reference
to a vector that CGT stores instead of synthesizing it on every 
call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98910 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19 00:34:35 +00:00
Chris Lattner
f30187a363 look up instructions by record, not by name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98904 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19 00:07:20 +00:00
Chris Lattner
518bb53485 move target-independent opcodes out of TargetInstrInfo
into TargetOpcodes.h.  #include the new TargetOpcodes.h
into MachineInstr.  Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the 
codebase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 19:54:29 +00:00
Dale Johannesen
243a32f96b Remove DEBUG_DECLARE, looks like we don't need it.
Also, DEBUG_VALUE has side effects.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93498 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15 01:50:44 +00:00
Dale Johannesen
d2035203a0 Add DEBUG_DECLARE. Not used yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93040 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-09 01:24:25 +00:00
Dale Johannesen
87563b3937 Add DEBUG_VALUE. Not used yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93030 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-08 23:51:25 +00:00
Dan Gohman
9b03da6824 Revert 90628, which was incorrect.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91448 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15 20:21:44 +00:00
Dan Gohman
7004b9cf33 Minor code simplification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90628 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05 00:05:43 +00:00
Jakob Stoklund Olesen
26207e5bf1 Introduce the TargetInstrInfo::KILL machine instruction and get rid of the
unused DECLARE instruction.

KILL is not yet used anywhere, it will replace TargetInstrInfo::IMPLICIT_DEF
in the places where IMPLICIT_DEF is just used to alter liveness of physical
registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83006 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 20:32:26 +00:00
Torok Edwin
804e0fea40 Convert more abort() calls to llvm_report_error().
Also remove trailing semicolon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-08 19:04:27 +00:00
Daniel Dunbar
1a55180238 Replace std::iostreams with raw_ostream in TableGen.
- Sorry, I can't help myself.

 - No intended functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-03 00:10:29 +00:00
Dan Gohman
88c7af096b Rename COPY_TO_SUBCLASS to COPY_TO_REGCLASS, and generalize
it accordingly. Thanks to Jakob Stoklund Olesen for pointing
out how this might be useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68986 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-13 21:06:25 +00:00
Dan Gohman
f8c7394781 Add a new TargetInstrInfo MachineInstr opcode, COPY_TO_SUBCLASS.
This will be used to replace things like X86's MOV32to32_.

Enhance ScheduleDAGSDNodesEmit to be more flexible and robust
in the presense of subregister superclasses and subclasses. It
can now cope with the definition of a virtual register being in
a subclass of a use.

Re-introduce the code for recording register superreg classes and
subreg classes. This is needed because when subreg extracts and
inserts get coalesced away, the virtual registers are left in
the correct subclass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68961 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-13 15:38:05 +00:00
Chris Lattner
1cfa0776c3 Fix shift overflow bug that would occur when a field was a full 32-bits
in tblgen.  This is PR2827, thanks to Waldemar Knorr for tracking this
down.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57124 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-05 18:31:58 +00:00
Evan Cheng
bc95b23156 Add instruction names as comments to InstBits entries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56275 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17 06:29:52 +00:00
Evan Cheng
e3e3626338 Eliminate a compile time warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55878 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-07 09:00:57 +00:00
Evan Cheng
acff339e39 Change getBinaryCodeForInstr prototype. First operand MachineInstr& should be const. Make corresponding changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55623 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-02 06:51:36 +00:00
Dan Gohman
4406604047 Split ISD::LABEL into ISD::DBG_LABEL and ISD::EH_LABEL, eliminating
the need for a flavor operand, and add a new SDNode subclass,
LabelSDNode, for use with them to eliminate the need for a label id
operand.

Change instruction selection to let these label nodes through
unmodified instead of creating copies of them. Teach the MachineInstr
emitter how to emit a MachineInstr directly from an ISD label node.

This avoids the need for allocating SDNodes for the label id and
flavor value, as well as SDNodes for each of the post-isel label,
label id, and label flavor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52943 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-01 00:05:16 +00:00
Christopher Lamb
c929823525 Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48412 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-16 03:12:01 +00:00
Evan Cheng
da47e6e0d0 Replace all target specific implicit def instructions with a target independent one: TargetInstrInfo::IMPLICIT_DEF.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48380 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-15 00:03:38 +00:00
Evan Cheng
a844bdeab3 SDIsel processes llvm.dbg.declare by recording the variable debug information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc.
Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes.
For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46659 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-02 04:07:54 +00:00
Chris Lattner
3060910e29 remove attributions from utils.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45419 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:37:13 +00:00
Christopher Lamb
08d52071ba Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40518 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 07:48:21 +00:00
Jim Laskey
a683f9ba13 Files missing from LABEL check in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33539 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-26 17:29:20 +00:00
Bill Wendling
f5da13367f What should be the last unnecessary <iostream>s in the library.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32333 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-07 22:21:48 +00:00
Chris Lattner
f64f9a4b75 Remove the isTwoAddress property from the CodeGenInstruction class. It should
not be used for anything other than backwards compat constraint handling.

Add support for a new DisableEncoding property which contains a list of
registers that should not be encoded by the generated code emitter.  Convert
the codeemitter generator to use this, fixing some PPC JIT regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31769 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-15 23:23:02 +00:00
Reid Spencer
fa3e3b9427 Remove an unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31403 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-03 01:48:30 +00:00
Chris Lattner
8aa01f4b43 Fix JIT encoding of two-addr instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30111 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05 03:01:52 +00:00
Jim Laskey
cb12903147 Clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29137 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-13 22:17:08 +00:00
Jim Laskey
f1b05bf755 1. Simplfy bit operations.
2. Coalesce instruction cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29135 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-13 21:02:53 +00:00
Jim Laskey
ed393433d2 Move base value of instruction to lookup table to prepare for case reduction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29122 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12 19:15:43 +00:00
Jim Laskey
1406bdab85 Reduce bloat in target libraries by removing per machine instruction assertion
from code emitter generation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29097 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-11 01:25:59 +00:00
Chris Lattner
485c00f7e8 Fix miscodegen of V_SET0 in PPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26836 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-18 00:40:36 +00:00
Chris Lattner
188454ae2b Don't emit JIT code for these instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25669 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-27 01:39:38 +00:00
Chris Lattner
dc93efe30e Fix an incompatibility with GCC 4.1, thanks to Vladimir Merzliakov
for pointing this out!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23963 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24 15:04:15 +00:00
Chris Lattner
fcd60a010b The code emitter generator only supports targets with 32-bit instruction
words.  There is no way for one of these targets to have a > 32-bit immediate!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22897 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-19 01:04:33 +00:00
Misha Brukman
3da94aec4d Remove trailing whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21428 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-22 00:00:37 +00:00
Misha Brukman
28eefa5464 * Factor out (into new fn) a loop emitting operand shifts into the instruction
* Reverse instruction bit components for a LittleEndian-style encoding
* Fix some comments and spacing


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16975 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-14 05:53:01 +00:00
Reid Spencer
551ccae044 Changes For Bug 352
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-01 22:55:40 +00:00
Chris Lattner
2c38413b3f Do not #include files into the llvm namespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15849 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-17 03:08:28 +00:00
Misha Brukman
ad346ad170 Deleted commented-out code as we now get namespace directly, add comments
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15627 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-10 20:54:58 +00:00
Misha Brukman
e2ba7787ba Use the target name instead of hard-coding SparcV9.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15616 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-10 18:31:01 +00:00
Chris Lattner
2b27b88716 This was a good idea, but until this does not break the build of
lib/Target/Sparc, we should not use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15603 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-10 15:05:18 +00:00
Misha Brukman
d7a5b2826c Use the current target name instead of a ClassPrefix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15585 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-09 19:10:43 +00:00
Misha Brukman
eb178c146a * Use Classname and ClassPrefix instead of hard-coded V9 values
* Simplify code and shorten lines by not recomputing values


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15582 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-09 17:47:45 +00:00
Misha Brukman
4e4f8631f6 * Added documentation in the file header
* Shorten assert() text to make it fit within 80 cols


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15508 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-04 22:07:54 +00:00
Chris Lattner
2082ebe8b3 Finegrainify namespacification
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15381 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-01 03:55:39 +00:00