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393ebae0ef
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3093 Commits

Author SHA1 Message Date
Chris Lattner
393ebae0ef Enable improved spilling costs by default. This speeds up viterbi on x86 
by 40%, FreeBench/fourinarow by 20%, and many other programs 10-25%.

On PPC, this speeds up fourinarow by 18%, and probably other things as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31504 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 18:04:58 +00:00
Jim Laskey
7902c75331 Use correct value for float HUGH_VAL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31500 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 12:25:45 +00:00
Evan Cheng
bbd6f6ec1a Add post-indexed load / store transformations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31498 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 09:03:05 +00:00
Chris Lattner
b75a663707 Add a new llcbeta option. This speeds up viterbi from 12.34 to 8.76s on 
X86.  If happy, I'll enable this by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31493 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 07:18:40 +00:00
Reid Spencer
5a4951e936 Unbreak X86/ELF Debugging. Somehow this line got lost in Jim's cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31492 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 06:36:36 +00:00
Chris Lattner
fa9aa2b424 Fix PR988 and CodeGen/Generic/2006-11-06-MemIntrinsicExpand.ll. 
The low part goes in the first operand of expandop, not the second one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31487 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 04:11:44 +00:00
Evan Cheng
d5ad440f43 Remove dead code; added a missing null ptr check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31478 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 21:33:46 +00:00
Jim Laskey
f910a3ff0f Tab interferes with uniqueness. 
NOTE: There doesn't seem to be consistency for whether a leading tab
is present in a section heading.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31475 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 16:23:59 +00:00
Jim Laskey
84ca10f47b D'oh - reversed logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31474 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 13:20:29 +00:00
Evan Cheng
3ef554d2b1 Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31473 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 08:14:30 +00:00
Jeff Cohen
d41b30def3 Unbreak VC++ build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31464 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 19:31:28 +00:00
Evan Cheng
33dbedcdcb Added pre-indexed store support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31459 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 09:31:14 +00:00
Evan Cheng
9109fb1eb7 Added getIndexedStore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31458 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 09:30:09 +00:00
Jim Laskey
5cd496e727 Live local variables are being dropped because the begin or end labels marking 
their scope are being deleted.  Workaround is to widen scope to full function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31454 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 10:48:07 +00:00
Evan Cheng
95f6edeff5 Changes to use operand constraints to process two-address instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31453 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 09:44:31 +00:00
Evan Cheng
e077ef6e85 Fixed some spiller bugs exposed by the recent two-address code changes. Now 
there may be other def(s) apart from the use&def two-address operand. We need
to check if the register reuse for a use&def operand may conflicts with another
def. Provide a mean to recover from the conflict if it is detected when the
defs are processed later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31439 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 00:21:55 +00:00
Chris Lattner
033b107e10 this will work better 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31419 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 19:15:55 +00:00
Chris Lattner
0709718665 Fix the build on xcode < 2.4 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31417 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 19:13:59 +00:00
Evan Cheng
e6e97e66a3 Fix comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31414 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 07:31:32 +00:00
Evan Cheng
1a854be352 Rename 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31413 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 07:21:16 +00:00
Reid Spencer
b8f4e0aa17 Remove dead variable. Fix 80 column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31412 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:30:34 +00:00
Evan Cheng
7fc033a24d Added DAG combiner transformation to generate pre-indexed loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31410 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:06:21 +00:00
Evan Cheng
c5fc57dcae Added isPredecessor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31409 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:05:24 +00:00
Evan Cheng
bf105c8424 Proper check for two-addressness. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31408 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:04:46 +00:00
Chris Lattner
02cb49ee67 silence warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31397 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 01:28:29 +00:00
Reid Spencer
97821311a3 Make CodeGen libs -pedantic clean. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31387 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 23:56:21 +00:00
Jim Laskey
f673388351 1. Hash not quite right for DIEValues. 
2. Not going to use Usage (no significant benefit.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31384 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 21:48:18 +00:00
Reid Spencer
9bd6d65e29 Remove unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31382 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:55:40 +00:00
Reid Spencer
3ed469ccd7 For PR786: 
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:25:50 +00:00
Jim Laskey
ef42a01113 General clean up of teh dwarf writer. 
1. Most significant is the folding of debug information entries.  This
reduced self hosted -g SelectionDAGISel.s from 120M to 13M and pretty
close to matching .o file sizes with gcc.

2. Debug information entry printing for debugging the dwarf code.

3. Bring all the code closer to llvm standards.

4. Misc. fixes and doc clean ups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31379 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:12:39 +00:00
Reid Spencer
0a783f783c For PR950: 
Replace the REM instruction with UREM, SREM and FREM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31369 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 01:53:59 +00:00
Chris Lattner
2a821601f1 Allow the getRegForInlineAsmConstraint method to return a register class with 
no fixes physreg.  Treat this as permission to use any register in the register
class.  When this happens and it is safe, allow the llvm register allcoator to
allocate the register instead of doing it at isel time.  This eliminates a ton
of copies around common inline asms.  For example:

int test2(int Y, int X) {
  asm("foo %0, %1" : "=r"(X): "r"(X));
  return X;
}

now compiles to:

_test2:
        foo r3, r4
        blr

instead of:

_test2:
        mr r2, r4
        foo r2, r2
        mr r3, r2
        blr

GCC produces:

_test2:
        foo r4, r4
        mr r3,r4
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31366 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 01:41:49 +00:00
Evan Cheng
e6ae14e1f4 Rename 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31364 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 23:18:32 +00:00
Evan Cheng
360c2dd25a Two-address instructions no longer have to be A := A op C. Now any pair of dest / src operands can be tied together. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31363 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 23:06:55 +00:00
Evan Cheng
1dabb68ab4 Clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31359 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 22:39:30 +00:00
Evan Cheng
93467e7fe3 CopyFromReg starts a live range so its use should not be considered a floater. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31356 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 22:17:06 +00:00
Chris Lattner
d4bf3c2fd6 give branch folding a simple heuristic to decide which block to split so that 
it inserts an uncond branch where it is less likely to cause a problem.  This
fixes some perf issues on ppc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31354 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 19:36:29 +00:00
Evan Cheng
41349c10cb Add a printSetLabel that takes two id's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31347 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 09:23:08 +00:00
Evan Cheng
6cc31ae4da Print jumptable index. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31340 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 04:48:30 +00:00
Chris Lattner
1d08d83230 make tail merging more aggressive. If two blocks share a common tail, but the 
tail is not an entire block for either of them, pick one, split it, then
merge the common part.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31336 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 01:16:12 +00:00
Chris Lattner
d8ccff0c3e enable branch folding with an option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31335 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 00:38:31 +00:00
Chris Lattner
0ccb500fa7 Compile CodeGen/PowerPC/fp-branch.ll to: 
_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        blt cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr

instead of:

_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bge cr0, LBB1_1 ;bb72.exitStub
LBB1_4: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bnu cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31330 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 23:06:00 +00:00
Chris Lattner
df19f27d03 look through isunordered to inline it into branch blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31328 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 22:37:42 +00:00
Chris Lattner
efa46ce87b handle global address constant sdnodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31323 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 20:01:56 +00:00
Chris Lattner
53069fbbae TargetLowering::isOperandValidForConstraint 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31319 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 19:41:18 +00:00
Chris Lattner
dba1aeedd8 Change the prototype for TargetLowering::isOperandValidForConstraint 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31318 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 19:40:43 +00:00
Anton Korobeynikov
ab4022f196 1. Clean up code due to changes in SwitchTo*Section(2) 
2. Added partial debug support for mingw\cygwin targets (the same as
   Linux\ELF). Please note, that currently mingw\cygwin uses 'stabs' format
   for storing debug info by default, thus many (runtime) libraries has
   this information included. These formats shouldn't be mixed in one binary
   ('stabs' & 'DWARF'), otherwise binutils tools will be confused.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31311 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 08:31:24 +00:00
Chris Lattner
d03f1581c8 Turn an assert into an error message. This is commonly triggered when 
we don't support a specific constraint yet.  When this happens, print the
unsupported constraint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31310 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 07:33:13 +00:00
Evan Cheng
d063189c09 Fix a typo which can break jumptables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31305 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 02:31:00 +00:00
Reid Spencer
0de0c5da42 Fix a problem introduced by a last-minute change (logic negation). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31302 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 23:34:32 +00:00