Commit Graph

698 Commits

Author SHA1 Message Date
Evan Cheng
1e060f0242 Use SmallVector instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29619 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-11 18:33:41 +00:00
Evan Cheng
06d6470c65 - Prevent some functions from being inlined to eliminate the code size bloat
introduced by previous commit.
- SelectCode now returns a SDNode*. If it is not null, the selected node
  produces the same number of results as the input node. The seletion loop
  is responsible for calling ReplaceAllUsesWith() to replace the input node
  with the output target node. For other cases, e.g. when load is folded,
  the selection code is responsible for calling ReplaceAllUsesOfValueWith()
  and SelectCode returns NULL.
- Other clean ups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29602 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-11 08:59:35 +00:00
Chris Lattner
706d2d3608 Revert previous patch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29585 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-09 16:44:44 +00:00
Tanya Lattner
8d4ccf0ad4 Reverting back to original 1.8 version so I can manually merge in patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29584 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-09 16:41:21 +00:00
Chris Lattner
bd564bfc63 Start eliminating temporary vectors used to create DAG nodes. Instead, pass
in the start of an array and a count of operands where applicable.  In many
cases, the number of operands is known, so this static array can be allocated
on the stack, avoiding the heap.  In many other cases, a SmallVector can be
used, which has the same benefit in the common cases.

I updated a lot of code calling getNode that takes a vector, but ran out of
time.  The rest of the code should be updated, and these methods should be
removed.

We should also do the same thing to eliminate the methods that take a
vector of MVT::ValueTypes.

It would be extra nice to convert the dagiselemitter to avoid creating vectors
for operands when calling getTargetNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29566 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-08 02:23:42 +00:00
Evan Cheng
9bdca0302a Making TableGen'd instruction selection code non-recursive. This fixes PR805.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29548 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-07 22:17:58 +00:00
Chris Lattner
58d63567ea Remove some extraneous newlines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29492 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-03 00:42:26 +00:00
Chris Lattner
32501a0e33 Really add support for compilers without noinline
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29491 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-03 00:26:13 +00:00
Evan Cheng
d3f8429f01 Pass N by reference to select functions to prevent gcc from allocating more stack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29423 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-01 01:07:48 +00:00
Evan Cheng
6966c48767 Remove an unneeded match condition: the type check for root node has been
moved to outside the actual select routine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29415 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-31 19:01:58 +00:00
Evan Cheng
b6ee7f73e5 Split each select function for a particular opcode into multiple ones. One
per possible ValueType of the node. e.g. Select_add is split into Select_add_i8,
Select_add_i16, etc.

For opcodes which do not produce a non-chain result, it is split on the
ValueType of its first non-chain operand. e.g. Select_store.

On X86 / Mac OS X, Select_store used to be the largest function. It had a stack
frame size of 8.5k. Now the largest one is Store_i32 with a frame size of 3.1k.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29404 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-28 22:51:01 +00:00
Evan Cheng
dc7a66a081 Clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29378 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-28 01:19:22 +00:00
Evan Cheng
f2dfafcbc1 Rename IsFoldableBy to CanBeFoldedleBy
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29376 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-28 01:03:48 +00:00
Evan Cheng
2641cad180 Remove InFlightSet hack. No longer needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29373 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-28 00:47:19 +00:00
Evan Cheng
3aac4d58e4 Remove dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29359 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-27 19:59:34 +00:00
Evan Cheng
b2c121ac14 Let each target specific isel provide routine to check if a chain producing node is foldable by another.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29335 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-27 06:36:49 +00:00
Evan Cheng
233baf1c4b Fix for bug 840. Only use noinline attribute if gcc version >= 3.4
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29311 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-26 23:06:27 +00:00
Evan Cheng
e6389935a9 Removed a hack intended to allow (store (op (load))) folding. Will handle this with preprocessing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29258 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-21 22:19:51 +00:00
Jim Laskey
cd4317efcf Eliminate data relocations by using NULL instead of global empty list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29250 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-21 21:15:20 +00:00
Jim Laskey
60f09928a0 Use an enumeration to eliminate data relocations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29249 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-21 20:57:35 +00:00
Evan Cheng
eb1f40d3af Also checks for noResults field.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29235 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-20 23:36:20 +00:00
Evan Cheng
3b0c0148ed Make sub- and super- register classes const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29200 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-19 05:58:18 +00:00
Chris Lattner
a6dc9fb745 Fix a bug handling instructions, like blr, which just consist of a text
string.  The return value of printInstruction should be true for these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29196 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-19 01:39:06 +00:00
Evan Cheng
e6f32034db Add code size to target instruction use it as the 3rd isel sorting tie-breaker.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29193 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-19 00:24:41 +00:00
Evan Cheng
6f6602ce42 Make sub- super- reg-class tables static.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29190 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 22:18:31 +00:00
Chris Lattner
195bb4a7b0 Fix case where identical cases were not detected across case #0, because
instructions not handled would have a case value of #0, throwing things off.
This marginally shrinks the X86 asmprinter, but shrinks the sparc asmwriter
by 25 lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29187 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 19:27:30 +00:00
Chris Lattner
0a01212857 Fix an accidentally duplicated line that caused tblgen to crash on itanium.
Add an assert that catches the real problem earlier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29185 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 19:06:01 +00:00
Chris Lattner
96c1ade5c3 Maximally group commands. When all instructions within a command set have a
series of identical commands, handle them all with one switch.  In the case
of the x86 at&t asm printer, only 3 switches are needed for all instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29184 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 18:28:27 +00:00
Chris Lattner
b84628679a Change generator to remove operands as it processes them. No change in
generated file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29183 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 17:56:07 +00:00
Chris Lattner
191dd1f186 Handle the last operand more intelligently. When emitting the \n, also
return from the asmprinter to make the generated asmprinter both more
efficient and smaller.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29182 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 17:50:22 +00:00
Chris Lattner
e7a589df09 Emit switches with 1/2 cases as unconditional code or an if/then/else for
tidyness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29181 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 17:43:54 +00:00
Chris Lattner
b51ecd4dd9 Steal bits from the asm string index to use for operand information. On both
x86 and ppc, this gets us 4 more bits to play with, since the string indices
both only use 12 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29180 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 17:38:46 +00:00
Chris Lattner
5561640043 Merge operand info and asmstr idx into a single 32-bit field. No other change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29179 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 17:32:27 +00:00
Chris Lattner
bdff5f95b9 Completely change the structure of the generated asmprinter to be more table
based and less switch-statements-with-hundreds-of-cases based.  This shrinks
the x86 asmprinters to about 1/3 their previous size.

Other improvements coming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29177 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18 17:18:03 +00:00
Evan Cheng
fb878a37ba Use __attribute__((noinline)) only if compiled by gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29161 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-16 06:14:37 +00:00
Evan Cheng
f872940dfc Parameterize target node ValueType to allow more sharing of emit functions.
Also reduce the number of arguments passed to emit functions and removed a
hack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29160 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-16 06:12:52 +00:00
Evan Cheng
fceb57a917 Reduce instruction selection code size and stack frame size by factoring
code that emit target specific nodes into emit functions that are uniquified
and shared among selection routines.
e.g. This reduces X86ISelDAGToDAG.o (release) from ~2M to ~1.5M. Stack frame
size of Select_store from ~13k down to ~8k.
This is the first step. Further work to enable more sharing will follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29158 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-15 08:45:20 +00:00
Chris Lattner
fb5115e84c The generated index array should be const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29155 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-14 23:14:02 +00:00
Chris Lattner
6af022f255 Emit the string information for the asm writer as a single large string
and index into it, instead of emitting it like this:

  static const char * const OpStrs[] = {
    "PHINODE\n",        // PHI
    0,  // INLINEASM
    "adc ",     // ADC32mi
    "adc ",     // ADC32mi8
   ...

The old way required thousands of relocations that slows down link time and
dynamic load times.

This also cuts about 10K off each of the X86 asmprinters, and should shrink
the others as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29152 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-14 22:59:11 +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
16d42c6ac6 It was pointed out that DEBUG() is only available with -debug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29106 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-11 18:25:13 +00:00
Jim Laskey
e37fe9b3a1 Ensure that dump calls that are associated with asserts are removed from
non-debug build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29105 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-11 17:58:07 +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
a539c03271 tblgen uses EH
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29034 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-07 00:21:17 +00:00
Evan Cheng
322812e603 Ugly hack! Add helper functions InsertInFlightSetEntry and
RemoveInFlightSetEntry. They are used in place of direct set operators to
reduce instruction selection function stack size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28987 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-29 23:57:05 +00:00
Chris Lattner
02cdb377ec Fix an error message regression. Print:
LI8:    (LI8:i64 (imm:i64):$imm)
instead of:
  LI8:    (LI8:MVT::i64 (imm:MVT::i64):$imm)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28868 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-20 00:56:37 +00:00
Chris Lattner
186fb7d131 Don't require src/dst patterns to be able to fully resolve their types,
because information about one can help refine the other.  This allows us to
write:

def : Pat<(i32 (extload xaddr:$src, i8)),
          (LBZX xaddr:$src)>;

as:

def : Pat<(extload xaddr:$src, i8),
          (LBZX xaddr:$src)>;

because tblgen knows LBZX returns i32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28865 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-20 00:31:27 +00:00
Chris Lattner
a354849c27 Make sure to use the result of the pattern to infer the result type of the
instruction, and the result type of the instruction to refine the pattern.
This allows us to write things like this:

def : Pat<(v2i64 (bitconvert (v16i8 VR128:$src))), (v2i64 VR128:$src)>;

as:
def : Pat<(v2i64 (bitconvert (v16i8 VR128:$src))), (VR128:$src)>

and fixes a ppc64 issue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28863 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-20 00:18:02 +00:00