Chris Lattner
7e885005ba
add a note
...
llvm-svn: 31477
2006-11-06 21:26:49 +00:00
Jim Laskey
235aeef9e1
Tab interferes with uniqueness.
...
NOTE: There doesn't seem to be consistency for whether a leading tab
is present in a section heading.
llvm-svn: 31475
2006-11-06 16:23:59 +00:00
Jim Laskey
f39064c2de
D'oh - reversed logic.
...
llvm-svn: 31474
2006-11-06 13:20:29 +00:00
Evan Cheng
eb99bd736a
Add comment.
...
llvm-svn: 31473
2006-11-06 08:14:30 +00:00
Jeff Cohen
7d6f3db3e2
Unbreak VC++ build.
...
llvm-svn: 31464
2006-11-05 19:31:28 +00:00
Reid Spencer
35b927e0d3
Fix a bug in the last patch and convert to && instead of & for logical expr.
...
llvm-svn: 31463
2006-11-05 19:26:37 +00:00
Reid Spencer
6088f8af16
Implement the -enabled-cbe-printf-a feature.
...
llvm-svn: 31462
2006-11-05 17:09:41 +00:00
Nick Lewycky
67bad5adbc
Remove commented line from earlier debugging.
...
llvm-svn: 31460
2006-11-05 14:19:40 +00:00
Evan Cheng
33157700d9
Added pre-indexed store support.
...
llvm-svn: 31459
2006-11-05 09:31:14 +00:00
Evan Cheng
1a1e23eff7
Added getIndexedStore.
...
llvm-svn: 31458
2006-11-05 09:30:09 +00:00
Jim Laskey
01c55a50b1
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.
llvm-svn: 31454
2006-11-04 10:48:07 +00:00
Evan Cheng
fd2c5dd806
Changes to use operand constraints to process two-address instructions.
...
llvm-svn: 31453
2006-11-04 09:44:31 +00:00
Chris Lattner
2959789c92
encode BLR predicate info for the JIT
...
llvm-svn: 31450
2006-11-04 05:42:48 +00:00
Chris Lattner
6be726048e
Go through all kinds of trouble to mark 'blr' as having a predicate operand
...
that takes a register and condition code. Print these pieces of BLR the
right way, even though it is currently set to 'always'.
Next up: get the JIT encoding right, then enhance branch folding to produce
predicated blr for simple examples.
llvm-svn: 31449
2006-11-04 05:27:39 +00:00
Evan Cheng
51733ed4a3
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.
llvm-svn: 31439
2006-11-04 00:21:55 +00:00
Chris Lattner
c8a68d08c3
Describe PPC predicates, which are a pair of CR# and condition.
...
llvm-svn: 31438
2006-11-03 23:53:25 +00:00
Chris Lattner
4905d2c5b4
initial steps to getting the predicate on PPC::BLR right.
...
llvm-svn: 31437
2006-11-03 23:52:18 +00:00
Chris Lattner
4fcc04a32a
remove dead var
...
llvm-svn: 31436
2006-11-03 23:50:15 +00:00
Chris Lattner
9ac6442db6
remove dead/redundant vars
...
llvm-svn: 31435
2006-11-03 23:48:56 +00:00
Chris Lattner
eb7128465d
remove redundant/dead vars
...
llvm-svn: 31434
2006-11-03 23:47:20 +00:00
Chris Lattner
895d199348
remove dead vars
...
llvm-svn: 31433
2006-11-03 23:46:45 +00:00
Andrew Lenharth
0ebb0b03e6
The wrong parameter was being tested to deturmine i32 vs i64
...
llvm-svn: 31431
2006-11-03 22:45:50 +00:00
Chris Lattner
2048373e71
add a note
...
llvm-svn: 31429
2006-11-03 22:27:39 +00:00
Chris Lattner
ea2abe2384
Fix BasicAA/2006-11-03-BasicAAVectorCrash.ll by handling out-of-range
...
vector accesses like we handle out-of-range array accesses.
llvm-svn: 31427
2006-11-03 21:58:48 +00:00
Chris Lattner
bb3ea2a437
this will work better
...
llvm-svn: 31419
2006-11-03 19:15:55 +00:00
Chris Lattner
a35f8c16c4
Fix the build on xcode < 2.4
...
llvm-svn: 31417
2006-11-03 19:13:59 +00:00
Andrew Lenharth
01a4a5d07e
Split the External and Intrinsic handling into seperate functions. This
...
improves readability of the call handling code significantly, as well as
makes it clear which parts are hacky (externals) and which parts are good
(call handling).
No functionality change.
llvm-svn: 31415
2006-11-03 17:43:19 +00:00
Evan Cheng
9456dd8b81
Fix comments.
...
llvm-svn: 31414
2006-11-03 07:31:32 +00:00
Evan Cheng
1dfd26a151
Rename
...
llvm-svn: 31413
2006-11-03 07:21:16 +00:00
Reid Spencer
52f958741a
Remove dead variable. Fix 80 column violations.
...
llvm-svn: 31412
2006-11-03 03:30:34 +00:00
Rafael Espindola
4ece5c04f4
revert previous patch
...
llvm-svn: 31411
2006-11-03 03:08:28 +00:00
Evan Cheng
357017f4a9
Added DAG combiner transformation to generate pre-indexed loads.
...
llvm-svn: 31410
2006-11-03 03:06:21 +00:00
Evan Cheng
c176f038b9
Added isPredecessor.
...
llvm-svn: 31409
2006-11-03 03:05:24 +00:00
Evan Cheng
299022d514
Proper check for two-addressness.
...
llvm-svn: 31408
2006-11-03 03:04:46 +00:00
Evan Cheng
94b29e9e91
Dead code.
...
llvm-svn: 31405
2006-11-03 02:08:41 +00:00
Reid Spencer
6b1fe928b1
Remove some dead code.
...
llvm-svn: 31401
2006-11-03 01:44:51 +00:00
Rafael Espindola
38b162c1d2
add createCFGSimplificationPass to ARMTargetMachine::addInstSelector
...
llvm-svn: 31400
2006-11-03 01:39:25 +00:00
Rafael Espindola
f16dbf697a
assert.h -> cassert
...
llvm-svn: 31399
2006-11-03 01:38:14 +00:00
Chris Lattner
62e2cad6b8
remove dead code
...
llvm-svn: 31398
2006-11-03 01:34:58 +00:00
Chris Lattner
cd7b92251d
silence warning
...
llvm-svn: 31397
2006-11-03 01:28:29 +00:00
Chris Lattner
799b96be08
silence warning
...
llvm-svn: 31395
2006-11-03 01:19:31 +00:00
Chris Lattner
b974b0a3e1
silence warnings.
...
llvm-svn: 31394
2006-11-03 01:18:29 +00:00
Chris Lattner
de2f0906e4
silence warning
...
llvm-svn: 31393
2006-11-03 01:13:15 +00:00
Chris Lattner
71f55131d4
silence warnings
...
llvm-svn: 31392
2006-11-03 01:11:05 +00:00
Reid Spencer
c0b1dec892
Make CBackend -pedantic clean.
...
llvm-svn: 31388
2006-11-03 00:00:57 +00:00
Reid Spencer
cb67d99001
Make CodeGen libs -pedantic clean.
...
llvm-svn: 31387
2006-11-02 23:56:21 +00:00
Rafael Espindola
a1fde82b6b
#include <assert.h>
...
llvm-svn: 31386
2006-11-02 23:48:53 +00:00
Chris Lattner
2de0910a1b
fix a bug reid noticed
...
llvm-svn: 31385
2006-11-02 23:39:53 +00:00
Jim Laskey
15d166ba8f
1. Hash not quite right for DIEValues.
...
2. Not going to use Usage (no significant benefit.)
llvm-svn: 31384
2006-11-02 21:48:18 +00:00
Reid Spencer
9ec8a7555b
Remove unused variable.
...
llvm-svn: 31382
2006-11-02 20:55:40 +00:00
Reid Spencer
de46e48420
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.
llvm-svn: 31380
2006-11-02 20:25:50 +00:00
Jim Laskey
936d546eca
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.
llvm-svn: 31379
2006-11-02 20:12:39 +00:00
Rafael Espindola
ac8668d62f
move ARMCondCodeToString to ARMAsmPrinter.cpp
...
remove unused variables from lowerCall
llvm-svn: 31378
2006-11-02 15:00:02 +00:00
Jim Laskey
eb0fd251c1
Allow FoldingSet clients to pump up the initial hash size.
...
llvm-svn: 31377
2006-11-02 14:21:26 +00:00
Reid Spencer
5162c6a67d
Remove unused variable.
...
llvm-svn: 31376
2006-11-02 08:23:44 +00:00
Reid Spencer
3054b14059
Remove unused variables.
...
llvm-svn: 31375
2006-11-02 08:18:15 +00:00
Reid Spencer
b20b6857f3
Remove a function prototype that is no longer needed (REM patch missed it)
...
llvm-svn: 31374
2006-11-02 08:12:02 +00:00
Reid Spencer
7f311c2f4b
Get rid of unused variable.
...
llvm-svn: 31373
2006-11-02 07:59:59 +00:00
Andrew Lenharth
d8b59f67f6
fix 2006-11-01-vastart.ll
...
llvm-svn: 31371
2006-11-02 03:05:26 +00:00
Reid Spencer
7eb55b395f
For PR950:
...
Replace the REM instruction with UREM, SREM and FREM.
llvm-svn: 31369
2006-11-02 01:53:59 +00:00
Chris Lattner
584a11ae22
Implement the getRegForInlineAsmConstraint method for PPC. With recent
...
sdisel changes, 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
llvm-svn: 31367
2006-11-02 01:44:04 +00:00
Chris Lattner
55402d4403
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
llvm-svn: 31366
2006-11-02 01:41:49 +00:00
Evan Cheng
93cdd149f7
Rename
...
llvm-svn: 31364
2006-11-01 23:18:32 +00:00
Evan Cheng
d8697deca3
Two-address instructions no longer have to be A := A op C. Now any pair of dest / src operands can be tied together.
...
llvm-svn: 31363
2006-11-01 23:06:55 +00:00
Devang Patel
2cb4f83b38
There can be more than one PHINode at the start of the block.
...
llvm-svn: 31362
2006-11-01 23:04:45 +00:00
Evan Cheng
1b2e60e970
Added getTiedToSrcOperand() to check for two-address'ness.
...
llvm-svn: 31360
2006-11-01 23:00:31 +00:00
Evan Cheng
1359196c4e
Clean up.
...
llvm-svn: 31359
2006-11-01 22:39:30 +00:00
Devang Patel
44519a8feb
Handle PHINode with only one incoming value.
...
This fixes http://llvm.org/bugs/show_bug.cgi?id=979
llvm-svn: 31358
2006-11-01 22:26:43 +00:00
Evan Cheng
47218fab42
CopyFromReg starts a live range so its use should not be considered a floater.
...
llvm-svn: 31356
2006-11-01 22:17:06 +00:00
Reid Spencer
20ffdbe7c1
Make ScalarEvolution actually use a ZeroExtend expression instead of
...
having SCZeroExtendExpr be equivalent to SCTruncate
llvm-svn: 31355
2006-11-01 21:53:12 +00:00
Chris Lattner
7cee6ddcd8
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.
llvm-svn: 31354
2006-11-01 19:36:29 +00:00
Chris Lattner
5a0bd61c64
Fix GlobalOpt/2006-11-01-ShrinkGlobalPhiCrash.ll and McGill/chomp
...
llvm-svn: 31352
2006-11-01 18:03:33 +00:00
Rafael Espindola
3576405a26
print null values in bss
...
llvm-svn: 31349
2006-11-01 14:26:44 +00:00
Rafael Espindola
0cd8d14c7c
implement zextload bool and truncstore bool
...
llvm-svn: 31348
2006-11-01 14:13:27 +00:00
Evan Cheng
91f120f4fa
Add a printSetLabel that takes two id's.
...
llvm-svn: 31347
2006-11-01 09:23:08 +00:00
Chris Lattner
eebea43b48
Factor gep instructions through phi nodes.
...
llvm-svn: 31346
2006-11-01 07:43:41 +00:00
Chris Lattner
14f82c7dcd
Turn a phi of many loads into a phi of the address and a single load of the
...
result. This can significantly shrink code and exposes identities more
aggressively.
llvm-svn: 31344
2006-11-01 07:13:54 +00:00
Evan Cheng
94e5bc9e83
Fix ldmxcsr JIT encoding.
...
llvm-svn: 31343
2006-11-01 06:53:52 +00:00
Chris Lattner
dc826fc068
Fix a bug in the previous patch
...
llvm-svn: 31342
2006-11-01 04:55:47 +00:00
Chris Lattner
cadac0c5c3
Fold things like "phi [add (a,b), add(c,d)]" into two phi's and one add.
...
This triggers thousands of times on multisource.
llvm-svn: 31341
2006-11-01 04:51:18 +00:00
Evan Cheng
415f365e5c
Print jumptable index.
...
llvm-svn: 31340
2006-11-01 04:48:30 +00:00
Reid Spencer
5e2e0cb9aa
Remove unnecessary sign conversions made possible by last patch.
...
llvm-svn: 31339
2006-11-01 03:45:43 +00:00
Reid Spencer
f84930746e
Fix a bug in the interpreter where divides of unmatched signed operands
...
would fail. E.g. udiv sint X, Y or sdiv uint X, Y would fail to find a
type match in the switch statement and fail the operation.
llvm-svn: 31338
2006-11-01 03:41:05 +00:00
Chris Lattner
f505a5a063
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.
llvm-svn: 31336
2006-11-01 01:16:12 +00:00
Chris Lattner
3ac71b31f0
enable branch folding with an option
...
llvm-svn: 31335
2006-11-01 00:38:31 +00:00
Evan Cheng
7a6a5b9af5
Add constraints to Instruction class.
...
llvm-svn: 31332
2006-11-01 00:26:27 +00:00
Andrew Lenharth
dfbf91e59d
more shotenning
...
llvm-svn: 31331
2006-10-31 23:46:56 +00:00
Chris Lattner
fe43befeda
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
llvm-svn: 31330
2006-10-31 23:06:00 +00:00
Chris Lattner
427301fdae
look through isunordered to inline it into branch blocks.
...
llvm-svn: 31328
2006-10-31 22:37:42 +00:00
Evan Cheng
a41c2d6432
Nuke dead code.
...
llvm-svn: 31327
2006-10-31 21:53:31 +00:00
Chris Lattner
44daa50bed
allow the address of a global to be used with the "i" constraint when in
...
-static mode. This implements PR882.
llvm-svn: 31326
2006-10-31 20:13:11 +00:00
Chris Lattner
60ce558aaa
implement the 'c' inline asm modifier character
...
llvm-svn: 31325
2006-10-31 20:12:30 +00:00
Chris Lattner
1fd360e13a
handle global address constant sdnodes
...
llvm-svn: 31323
2006-10-31 20:01:56 +00:00
Andrew Lenharth
8b20fa42da
Let us play simplify the td file (and fix a few missed sub and mul patterns).
...
llvm-svn: 31322
2006-10-31 19:52:12 +00:00
Chris Lattner
f6a6966cd2
handle "st" as "st(0)"
...
llvm-svn: 31320
2006-10-31 19:42:44 +00:00
Chris Lattner
6f043b90ea
TargetLowering::isOperandValidForConstraint
...
llvm-svn: 31319
2006-10-31 19:41:18 +00:00
Chris Lattner
8c6949e5b2
Change the prototype for TargetLowering::isOperandValidForConstraint
...
llvm-svn: 31318
2006-10-31 19:40:43 +00:00
Chris Lattner
984d6e1669
generalize the fix for PR977 to also fix
...
Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll
llvm-svn: 31317
2006-10-31 18:56:48 +00:00
Chris Lattner
eb68f080ef
Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll
...
llvm-svn: 31315
2006-10-31 17:52:18 +00:00
Andrew Lenharth
692e4155aa
Add all that branch mangling niftiness
...
llvm-svn: 31313
2006-10-31 16:49:55 +00:00
Rafael Espindola
4e825336a0
add support for calling functions when the caller has variable sized objects
...
llvm-svn: 31312
2006-10-31 13:03:26 +00:00
Anton Korobeynikov
aa4c0f9374
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.
llvm-svn: 31311
2006-10-31 08:31:24 +00:00
Chris Lattner
968f803928
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.
llvm-svn: 31310
2006-10-31 07:33:13 +00:00
Anton Korobeynikov
49993529eb
Unbreaking static ctors patch.
...
Defaulting second arguments of SwitchTo*Section, this should make things
somehow clearer.
llvm-svn: 31306
2006-10-31 06:11:06 +00:00
Evan Cheng
e6d584765f
Fix a typo which can break jumptables.
...
llvm-svn: 31305
2006-10-31 02:31:00 +00:00
Reid Spencer
2545fe6d93
Make this compile again.
...
llvm-svn: 31304
2006-10-31 01:45:56 +00:00
Evan Cheng
de5ecd6bc1
Apply Aton's LLVM patch for PR973: Linux ctors / dtors support.
...
llvm-svn: 31303
2006-10-31 01:26:55 +00:00
Reid Spencer
7eda51d4cf
Fix a problem introduced by a last-minute change (logic negation).
...
llvm-svn: 31302
2006-10-30 23:34:32 +00:00
Chris Lattner
3e36e07db2
fix miscompilation of llvm.isunordered, where we branched on the opposite
...
condition. This fixes miscompilation of Olden/bh and many others.
llvm-svn: 31301
2006-10-30 23:02:25 +00:00
Reid Spencer
b51b5c0b1f
Add debug support for X86/ELF targets (Linux). This allows llvm-gcc4
...
generated object modules to be debugged with gdb. Hopefully this helps
pre-release debugging.
llvm-svn: 31299
2006-10-30 22:32:30 +00:00
Chris Lattner
7443600ef8
fix wonky indentation
...
llvm-svn: 31298
2006-10-30 22:27:23 +00:00
Devang Patel
bf0a5c2d56
Update comment. Valid option is -debug-pass=Structures.
...
llvm-svn: 31297
2006-10-30 19:25:54 +00:00
Jim Laskey
ad2f5b7d18
Switch abbreviations to use the folding set.a.
...
llvm-svn: 31296
2006-10-30 15:59:54 +00:00
Jim Laskey
43c19124bb
Simplify DwarfWriter header.
...
llvm-svn: 31295
2006-10-30 13:35:07 +00:00
Evan Cheng
0d41d19427
All targets expand BR_JT for now.
...
llvm-svn: 31294
2006-10-30 08:02:39 +00:00
Evan Cheng
84a28d4e76
Lower jumptable to BR_JT. The legalizer can lower it to a BRIND or let the target custom lower it.
...
llvm-svn: 31293
2006-10-30 08:00:44 +00:00
Evan Cheng
c3e695137d
Added a new SDNode type: BR_JT for jumptable branch.
...
llvm-svn: 31292
2006-10-30 07:59:36 +00:00
Chris Lattner
149e666baf
add a highly efficient hash table that is specialized for mapping C strings
...
to some other type.
llvm-svn: 31286
2006-10-29 23:42:03 +00:00
Chris Lattner
b9de90377f
Add a new llvm::Allocator abstraction, which will be used by a container
...
I'm about to add. This is similar to, but necessarily different than, the
STL allocator class.
llvm-svn: 31285
2006-10-29 22:08:03 +00:00
Chris Lattner
fc519cd2d1
Fix SimplifyCFG/2006-10-29-InvokeCrash.ll, a crash compiling QT.
...
llvm-svn: 31284
2006-10-29 21:21:20 +00:00
Chris Lattner
504eeda365
Make CanFallThrough more intelligent (so it can handle blocks with (e.g.) no
...
successors), and make island block movement more general.
This compiles CodeGen/X86/2006-04-27-ISelFoldingBug.ll to:
_loadAndRLEsource_no_exit_2E_1_label_2E_0:
subl $8, %esp
movl %esi, 4(%esp)
movl %ebx, (%esp)
movl 16(%esp), %eax
movl 12(%esp), %ecx
LBB1_3: #label.0
movl _last, %edx
movl %edx, %esi
incl %esi
movl %esi, _last
movl %ecx, %ebx
# TRUNCATE movb %bl, %bl
movl _block, %esi
movb %bl, 1(%esi,%edx)
cmpl %eax, _last
jge LBB1_2 #codeRepl5.exitStub
LBB1_4: #label.0
cmpl $257, %ecx
je LBB1_2 #codeRepl5.exitStub
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
movl $1, %eax
movl (%esp), %ebx
movl 4(%esp), %esi
addl $8, %esp
ret
LBB1_2: #codeRepl5.exitStub
xorl %eax, %eax
movl (%esp), %ebx
movl 4(%esp), %esi
addl $8, %esp
ret
instead of:
_loadAndRLEsource_no_exit_2E_1_label_2E_0:
subl $8, %esp
movl %esi, 4(%esp)
movl %ebx, (%esp)
movl 16(%esp), %eax
movl 12(%esp), %ecx
jmp LBB1_3 #label.0
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
movl $1, %eax
movl (%esp), %ebx
movl 4(%esp), %esi
addl $8, %esp
ret
LBB1_2: #codeRepl5.exitStub
xorl %eax, %eax
movl (%esp), %ebx
movl 4(%esp), %esi
addl $8, %esp
ret
LBB1_3: #label.0
movl _last, %edx
movl %edx, %esi
incl %esi
movl %esi, _last
movl %ecx, %ebx
# TRUNCATE movb %bl, %bl
movl _block, %esi
movb %bl, 1(%esi,%edx)
cmpl %eax, _last
jge LBB1_2 #codeRepl5.exitStub
LBB1_4: #label.0
cmpl $257, %ecx
jne LBB1_1 #label.0.no_exit.1_crit_edge.exitStub
jmp LBB1_2 #codeRepl5.exitStub
... which is much better layout :)
llvm-svn: 31282
2006-10-29 21:05:41 +00:00
Chris Lattner
e60ae823e8
fix Generic/2006-10-29-Crash.ll
...
llvm-svn: 31281
2006-10-29 21:01:20 +00:00
Chris Lattner
f31b9ef458
Fix a load folding issue that Evan noticed: there is no need to export values
...
used by comparisons in the main block.
llvm-svn: 31279
2006-10-29 18:23:37 +00:00
Jim Laskey
179ebd3fc3
Try again.
...
llvm-svn: 31278
2006-10-29 09:19:59 +00:00
Jim Laskey
8f05a611e9
Not handling zero length strings.
...
llvm-svn: 31277
2006-10-29 08:27:07 +00:00
Evan Cheng
7ab6123c42
VLOAD is not the LoadSDNode opcode.
...
llvm-svn: 31276
2006-10-29 06:14:47 +00:00
Nick Lewycky
dc146a9fb9
Remove spurious case. EXTLOAD is not one of the node opcodes.
...
llvm-svn: 31275
2006-10-29 02:26:30 +00:00
Chris Lattner
bba52191fa
split critical edges more carefully and intelligently. In particular, critical
...
edges whose destinations are not phi nodes don't bother us. Also, share
split edges, since the split edge can't have a phi. This significantly
reduces the complexity of generated code in some cases.
llvm-svn: 31274
2006-10-28 19:22:10 +00:00
Chris Lattner
c07657f59b
Teach branch folding to fold identical jump tables together and to delete
...
jump tables that are dead.
llvm-svn: 31273
2006-10-28 18:34:47 +00:00
Chris Lattner
cde339cf1e
const'ify jump table stuff
...
llvm-svn: 31269
2006-10-28 18:17:09 +00:00
Chris Lattner
28328f9a0a
add an assert
...
llvm-svn: 31267
2006-10-28 18:11:20 +00:00
Chris Lattner
28bfe389d1
don't print dead jump tables
...
llvm-svn: 31266
2006-10-28 18:10:06 +00:00
Chris Lattner
113f7470e6
implement the BlockHasNoFallThrough hook
...
llvm-svn: 31264
2006-10-28 17:35:02 +00:00
Chris Lattner
af8383806b
improve deletion of blocks that just contain branches by knowing that
...
the pred block doesn't fall through into them if it's a jumptable.
llvm-svn: 31263
2006-10-28 17:32:47 +00:00
Chris Lattner
53ebf20c26
add another target hook for branch folding.
...
llvm-svn: 31262
2006-10-28 17:29:57 +00:00
Jim Laskey
eef273a16f
Load and stores have not been uniqued properly.
...
llvm-svn: 31261
2006-10-28 17:25:28 +00:00
Chris Lattner
3e6b1c6157
Split *all* critical edges before isel. This resolves issues with spill code
...
being inserted on unsplit critical edges, which introduces (sometimes large
amounts of) partially dead spill code.
This also fixes PR925 + CodeGen/Generic/switch-crit-edge-constant.ll
llvm-svn: 31260
2006-10-28 17:04:37 +00:00
Chris Lattner
3e763f5708
add option to isCriticalEdge
...
llvm-svn: 31258
2006-10-28 06:58:17 +00:00
Chris Lattner
a6eb7e0803
break edges more intelligently
...
llvm-svn: 31257
2006-10-28 06:45:33 +00:00
Chris Lattner
80ea207bfa
Expose a smarter way to break critical edges.
...
llvm-svn: 31256
2006-10-28 06:44:56 +00:00
Chris Lattner
400ac04e64
SplitCriticalEdge checks to see if an edge is critical, don't check twice
...
llvm-svn: 31255
2006-10-28 06:38:14 +00:00
Chris Lattner
b78eb6c8d1
Fix a serious bug that caused any x86 vector stuff to infinite loop
...
llvm-svn: 31254
2006-10-28 06:15:26 +00:00
Evan Cheng
ae8c29a7d3
Doh. Must check if GV is constant first before putting it in .cstring.
...
llvm-svn: 31253
2006-10-28 05:56:51 +00:00
Evan Cheng
0d782b4c60
Doh. Must check if GV is constant first.
...
llvm-svn: 31252
2006-10-28 05:56:06 +00:00
Chris Lattner
23540b142c
add a method
...
llvm-svn: 31249
2006-10-28 01:24:05 +00:00
Chris Lattner
5191c65485
prepare for a change I'm about to make
...
llvm-svn: 31248
2006-10-28 00:59:20 +00:00
Chris Lattner
a6873c0f88
don't dist internal readme
...
llvm-svn: 31247
2006-10-28 00:51:15 +00:00
Chris Lattner
acc6b37d0d
don't dist internal readme's
...
llvm-svn: 31246
2006-10-28 00:49:54 +00:00
Chris Lattner
3be52bb570
don't distribute internal readme's
...
llvm-svn: 31245
2006-10-28 00:48:27 +00:00
Reid Spencer
247e09a07c
Make sure all the readme files get distributed.
...
llvm-svn: 31244
2006-10-28 00:11:39 +00:00
Jim Laskey
bd0f088743
Clean up.
...
llvm-svn: 31243
2006-10-27 23:52:51 +00:00
Chris Lattner
84a035056e
Fix a bug in merged condition handling (CodeGen/Generic/2006-10-27-CondFolding.ll).
...
Add many fewer CFG edges and PHI node entries. If there is a switch which has
the same block as multiple destinations, only add that block once as a successor/phi
node (in the jumptable case)
llvm-svn: 31242
2006-10-27 23:50:33 +00:00
Jim Laskey
f576b42bb2
Switch over from SelectionNodeCSEMap to FoldingSet.
...
llvm-svn: 31240
2006-10-27 23:46:08 +00:00
Chris Lattner
28174f5a3a
this doesn't occur any more in mason
...
llvm-svn: 31236
2006-10-27 22:02:19 +00:00
Chris Lattner
4c0cc53da1
the code in question is now:
...
cmpw cr0, r7, r3
ble cr0, LBB1_5 ;bb25
LBB1_8: ;bb17
cmpw cr0, r8, r5
bgt cr0, LBB1_2 ;bb
which is just as good as crnand.
llvm-svn: 31235
2006-10-27 22:00:55 +00:00
Chris Lattner
b9392fb635
remove debug code
...
llvm-svn: 31233
2006-10-27 21:58:03 +00:00
Chris Lattner
f1b54fd7a5
Codegen cond&cond with two branches. This compiles (f.e.) PowerPC/and-branch.ll to:
...
cmpwi cr0, r4, 4
bgt cr0, LBB1_2 ;UnifiedReturnBlock
LBB1_3: ;entry
cmplwi cr0, r3, 0
bne cr0, LBB1_2 ;UnifiedReturnBlock
instead of:
cmpwi cr7, r4, 4
mfcr r2
addic r4, r3, -1
subfe r3, r4, r3
rlwinm r2, r2, 30, 31, 31
or r2, r2, r3
cmplwi cr0, r2, 0
bne cr0, LBB1_2 ;UnifiedReturnBlock
LBB1_1: ;cond_true
llvm-svn: 31232
2006-10-27 21:54:23 +00:00
Chris Lattner
ed0110b949
Turn conditions like x<Y|z==q into multiple blocks.
...
This compiles Regression/CodeGen/X86/or-branch.ll into:
_foo:
subl $12, %esp
call L_bar$stub
movl 20(%esp), %eax
movl 16(%esp), %ecx
cmpl $5, %eax
jl LBB1_1 #cond_true
LBB1_3: #entry
testl %ecx, %ecx
jne LBB1_2 #UnifiedReturnBlock
LBB1_1: #cond_true
call L_bar$stub
addl $12, %esp
ret
LBB1_2: #UnifiedReturnBlock
addl $12, %esp
ret
instead of:
_foo:
subl $12, %esp
call L_bar$stub
movl 20(%esp), %eax
movl 16(%esp), %ecx
cmpl $4, %eax
setg %al
testl %ecx, %ecx
setne %cl
testb %cl, %al
jne LBB1_2 #UnifiedReturnBlock
LBB1_1: #cond_true
call L_bar$stub
addl $12, %esp
ret
LBB1_2: #UnifiedReturnBlock
addl $12, %esp
ret
And on ppc to:
cmpwi cr0, r29, 5
blt cr0, LBB1_1 ;cond_true
LBB1_3: ;entry
cmplwi cr0, r30, 0
bne cr0, LBB1_2 ;UnifiedReturnBlock
instead of:
cmpwi cr7, r4, 4
mfcr r2
addic r4, r3, -1
subfe r30, r4, r3
rlwinm r29, r2, 30, 31, 31
and r2, r29, r30
cmplwi cr0, r2, 0
bne cr0, LBB1_2 ;UnifiedReturnBlock
llvm-svn: 31230
2006-10-27 21:36:01 +00:00
Evan Cheng
e056dd5928
Fixed a significant bug where unpcklpd is incorrectly used to extract element 1 from a v2f64 value.
...
llvm-svn: 31228
2006-10-27 21:08:32 +00:00
Jim Laskey
cef515fcc0
SmallVector append not insert.
...
llvm-svn: 31224
2006-10-27 19:38:32 +00:00
Jim Laskey
a9e9cae33e
Grrr.
...
llvm-svn: 31223
2006-10-27 19:20:12 +00:00
Jim Laskey
a88e609c0f
Temp patch for missing functionality.
...
llvm-svn: 31222
2006-10-27 19:14:16 +00:00
Reid Spencer
115511f2e2
Make the Value and Type methods print a newline so it prints nicely in gdb
...
llvm-svn: 31221
2006-10-27 18:58:54 +00:00
Evan Cheng
bf3df77758
Fix for PR968: expand vector sdiv, udiv, srem, urem.
...
llvm-svn: 31220
2006-10-27 18:49:08 +00:00
Bill Wendling
e0412f500e
MathExtras isn't in the llvm/ADT directory but in the llvm/Support directory.
...
llvm-svn: 31219
2006-10-27 18:47:29 +00:00
Jim Laskey
6ca4a345dd
Apply editorials.
...
llvm-svn: 31218
2006-10-27 18:05:12 +00:00
Jim Laskey
43bc1847a2
Breakout folding hash set from SelectionDAGCSEMap.
...
llvm-svn: 31215
2006-10-27 16:16:16 +00:00
Reid Spencer
e54243f030
Initialize CStringSection member var.
...
llvm-svn: 31214
2006-10-27 16:14:06 +00:00
Evan Cheng
f53ae69365
Change load PatFrag to ignore indexed load.
...
llvm-svn: 31210
2006-10-26 21:55:50 +00:00
Evan Cheng
96d6bf50ae
getPreIndexedLoad -> getIndexedLoad.
...
llvm-svn: 31209
2006-10-26 21:53:40 +00:00
Evan Cheng
e1e06c2de8
Place cstrings in .cstring section.
...
llvm-svn: 31207
2006-10-26 21:48:57 +00:00
Evan Cheng
e974da6bb7
Speed up isCString()
...
llvm-svn: 31206
2006-10-26 21:48:03 +00:00
Reid Spencer
00c482b7a2
Simplify code a bit by changing instances of:
...
InsertNewInstBefore(new CastInst(Val, ValTy, Val->GetName()), I)
into:
InsertCastBefore(Val, ValTy, I)
llvm-svn: 31204
2006-10-26 19:19:06 +00:00
Evan Cheng
392f645783
Put cstrings in .cstring section when compiling for Mac OS X.
...
llvm-svn: 31203
2006-10-26 19:18:18 +00:00
Evan Cheng
3763c5b1c4
Add isCString() - returns true if a ConstantArray is a CString.
...
llvm-svn: 31201
2006-10-26 19:15:05 +00:00
Chris Lattner
91386800ea
Fix Transforms/InstCombine/2006-10-26-VectorReassoc.ll
...
llvm-svn: 31200
2006-10-26 18:27:26 +00:00
Chris Lattner
fac5f9110c
Add isFPOrFPVector() method, which indicates if a type is either FP or a
...
vector of FP types.
llvm-svn: 31198
2006-10-26 18:22:45 +00:00
Rafael Espindola
a23166d6a4
initial support for frame pointers
...
llvm-svn: 31197
2006-10-26 13:31:26 +00:00
Reid Spencer
c6b52da458
Enclose a case in { and } so that the pickier compilers don't complain.
...
llvm-svn: 31196
2006-10-26 06:17:40 +00:00
Reid Spencer
7e80b0b31e
For PR950:
...
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.
llvm-svn: 31195
2006-10-26 06:15:43 +00:00
Nick Lewycky
5b979ae531
Fix 2006-10-25-AddSetCC. A relational operator (like setlt) can never
...
produce an EQ property.
llvm-svn: 31193
2006-10-26 02:35:18 +00:00
Reid Spencer
810dd064aa
Make the makefile tell us when Intrinsics.gen is being updated.
...
llvm-svn: 31191
2006-10-26 01:42:23 +00:00
Nick Lewycky
9d17c82a26
Resurrect r1.25.
...
Fix and comment the "or", "and" and "xor" transformations.
llvm-svn: 31189
2006-10-25 23:48:24 +00:00
Chris Lattner
0d4479b77d
simplify code
...
llvm-svn: 31188
2006-10-25 22:21:37 +00:00
Evan Cheng
c415c5be49
During vector shuffle lowering, we sometimes commute a vector shuffle to try
...
to match MOVL (movss, movsd, etc.). Don't forget to commute it back and try
unpck* and shufp* if that doesn't pan out.
llvm-svn: 31186
2006-10-25 21:49:50 +00:00
Evan Cheng
7e065ff7e4
X86ISD::PEXTRW 3rd operand type is always target pointer type.
...
llvm-svn: 31185
2006-10-25 21:35:05 +00:00
Chris Lattner
53f53db919
hide symbols properly
...
llvm-svn: 31184
2006-10-25 21:14:31 +00:00
Evan Cheng
798b306311
Remove -disable-x86-shuffle-opti
...
llvm-svn: 31183
2006-10-25 20:48:19 +00:00
Chris Lattner
9feb308d51
turn off tail merging for now
...
llvm-svn: 31180
2006-10-25 18:08:50 +00:00
Chris Lattner
7a7835deb4
be more aggressive about matching identical instructions.
...
llvm-svn: 31179
2006-10-25 18:08:14 +00:00
Devang Patel
71b99297aa
Move getPreferredAlignmentLog from AsmPrinter to TargetData
...
llvm-svn: 31171
2006-10-24 20:32:14 +00:00
Rafael Espindola
bd29281e97
expand ISD::VACOPY
...
llvm-svn: 31170
2006-10-24 20:15:21 +00:00
John Criswell
6af0b120b8
Removed extraneous semi-colon; this was prevening the grammar file from
...
bison'ing correctly.
llvm-svn: 31169
2006-10-24 19:09:48 +00:00
Chris Lattner
61bcf9154d
visitSwitchCase knows how to insert conditional branches well. Change
...
visitBr to just call visitSwitchCase, eliminating duplicate logic.
llvm-svn: 31167
2006-10-24 18:07:37 +00:00
Chris Lattner
963ddad31a
Generalize CaseBlock a bit more:
...
Rename LHSBB/RHSBB to TrueBB/FalseBB. Allow the RHS value to be null,
in which case the LHS is treated as a bool.
llvm-svn: 31166
2006-10-24 17:57:59 +00:00
Chris Lattner
9030fc690a
Fix CodeGen/IA64/ret-0.ll, which has apparently been broken since some of the
...
isel changes happened months ago.
llvm-svn: 31164
2006-10-24 17:09:43 +00:00
Rafael Espindola
ed32883b27
fix warning about missing newline at end of file
...
llvm-svn: 31162
2006-10-24 17:07:11 +00:00
Chris Lattner
3f179d24c6
generalize 'CaseBlock'. It really allows any comparison to be inserted.
...
llvm-svn: 31161
2006-10-24 17:03:35 +00:00
Chris Lattner
aaeede0aa2
implement uncond branch insertion, mark branches with isBranch.
...
llvm-svn: 31160
2006-10-24 16:47:57 +00:00
Chris Lattner
ccd7704354
implement uncond branch insertion for the branch folding pass
...
llvm-svn: 31159
2006-10-24 16:44:55 +00:00
Chris Lattner
042d56230e
implement uncond branch insertion so alpha works work branchfolding.
...
llvm-svn: 31158
2006-10-24 16:41:36 +00:00
Chris Lattner
b7267bd034
implement uncond branch insertion for sparc to fix regressions from last night
...
due to branchfolding
llvm-svn: 31157
2006-10-24 16:39:19 +00:00
Chris Lattner
f054003ba7
new bad case
...
llvm-svn: 31156
2006-10-24 16:12:47 +00:00
Jim Laskey
1941bfa361
Don't do dead block elimination in fast mode.
...
llvm-svn: 31155
2006-10-24 16:11:49 +00:00
Jim Laskey
a916192267
LinearScanner hotspot.
...
llvm-svn: 31153
2006-10-24 14:35:25 +00:00
Jim Laskey
516cd40b5c
Tighter data structure for deleted debug labels.
...
llvm-svn: 31152
2006-10-24 11:50:43 +00:00
Chris Lattner
ebb1ad4382
Fix Transforms/ScalarRepl/2006-10-23-PointerUnionCrash.ll
...
llvm-svn: 31151
2006-10-24 06:26:32 +00:00
Chris Lattner
ceb51d8427
move single basic blocks that are neither fallen into nor fall out of into
...
a place more useful. In particular, if we can put them in a place where code
will be able to fall into it, do so. Otherwise, put it in a place it can fall
through into a successor. Otherwise, if preventing a fallthrough, move to the
end of the function, out of the way.
This deletes several hundred unconditional branches from spass.
llvm-svn: 31149
2006-10-24 01:12:32 +00:00
Chris Lattner
d43e8a7429
Add intrinsics for the rest of the DCB* instructions.
...
llvm-svn: 31148
2006-10-24 01:08:42 +00:00
Chris Lattner
dc7b9beb20
Revert back to r1.21, which was the last revision of predsimplify that
...
passes llvm-gcc bootstrap.
llvm-svn: 31146
2006-10-24 00:36:21 +00:00
Chris Lattner
94866bef35
add moveBefore/moveAfter helper methods
...
llvm-svn: 31145
2006-10-24 00:02:26 +00:00
Chris Lattner
ebdb1d6724
Enable tail merging by default.
...
llvm-svn: 31140
2006-10-23 22:10:12 +00:00
Rafael Espindola
b43efe86f5
implement STRB and STRH
...
llvm-svn: 31138
2006-10-23 20:34:27 +00:00
Rafael Espindola
cd5f662c7b
expand ISD::MEMSET
...
llvm-svn: 31137
2006-10-23 20:08:22 +00:00
Andrew Lenharth
9cdaa53007
Make these hack flags hidden, like other dsa hack flags
...
llvm-svn: 31136
2006-10-23 19:55:24 +00:00
Andrew Lenharth
0c3211eff0
Revert the aggressive inlining for now, it doesn't handle external correctly
...
llvm-svn: 31135
2006-10-23 19:53:37 +00:00
Chris Lattner
fe7b6ef346
Handle fallout from the recent branch-on-undef changes. This fixes
...
Prolangs-C/agrep and SCCP/2006-10-23-IPSCCP-Crash.ll
llvm-svn: 31132
2006-10-23 18:57:02 +00:00
Chris Lattner
4c931502cc
Minor tweak. Instead of generating:
...
movl 32(%esp), %eax
cmpl $1, %eax
je LBB1_1 #bb
LBB1_4: #entry
cmpl $2, %eax
je LBB1_2 #bb2
jmp LBB1_3 #UnifiedReturnBlock
LBB1_1: #bb
notice that we would miss the fall through and emit this instead:
movl 32(%esp), %eax
cmpl $2, %eax
je LBB1_2 #bb2
LBB1_4: #entry
cmpl $1, %eax
jne LBB1_3 #UnifiedReturnBlock
LBB1_1: #bb
llvm-svn: 31130
2006-10-23 18:38:22 +00:00
Jim Laskey
5e1a34032b
More complete solution to deleting blocks and debug info.
...
llvm-svn: 31129
2006-10-23 14:56:37 +00:00
Jim Laskey
bd7a1d2b4d
[SU]int update - inactive code may get activated someday
...
llvm-svn: 31128
2006-10-23 14:39:22 +00:00
Nick Lewycky
53b4158448
Remove the Backwards operation. Resolving now works at the time when a
...
property is added by running through the list of uses of the value and
adding resolved properties to the property set.
llvm-svn: 31126
2006-10-23 01:56:02 +00:00
Chris Lattner
76a7bc8c55
Fix phi node updating for switches lowered to linear sequences of branches.
...
llvm-svn: 31125
2006-10-22 23:00:53 +00:00
Chris Lattner
4c3ef4782d
disable this code for now, it's not yet safely updating phi nodes
...
llvm-svn: 31124
2006-10-22 22:47:10 +00:00
Nick Lewycky
6f5c30fcec
Fix similar missing optimization opportunity in XOR.
...
llvm-svn: 31123
2006-10-22 22:22:58 +00:00
Chris Lattner
bb3084546a
this part implemented.
...
llvm-svn: 31122
2006-10-22 21:40:12 +00:00
Nick Lewycky
af2b0571d0
Whoops! Add missing NULL check.
...
llvm-svn: 31121
2006-10-22 21:38:24 +00:00
Anton Korobeynikov
41a83d7871
Do section switching right way for Mingw\Cygwin and Linux.
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This will allow (after llvm-gcc linkage fix) more dummy tests using
libstdc++ to pass on mingw :)
llvm-svn: 31120
2006-10-22 21:37:13 +00:00
Chris Lattner
6d6fc26257
Implement PR964 and Regression/CodeGen/Generic/SwitchLowering.ll
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llvm-svn: 31119
2006-10-22 21:36:53 +00:00
Nick Lewycky
2c734f3fc1
Handle "if ((x|y) != 0)" for ints like we do for bools. Fixes missed
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optimization opportunity pointed out by Chris Lattner.
llvm-svn: 31118
2006-10-22 21:36:41 +00:00
Nick Lewycky
f345008339
AllocaInst can't return a null pointer. Fixes missed optimization
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opportunity pointed out by Andrew Lewycky.
llvm-svn: 31115
2006-10-22 19:53:27 +00:00
Chris Lattner
250eff20da
Add a workaround for PR962, disabling the more aggressive form of this
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transformation. This speeds up a C++ app 2.25x.
llvm-svn: 31113
2006-10-22 18:42:26 +00:00
Reid Spencer
aa1c614784
Don't generate a prototype for _setjmp. At least on Linux, this function
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has a different prototype than the one #included from <setjmp.h>. This
patch fixes siod and a number of other test cases on Linux that were
failing the CBE because of this _setjmp issue.
llvm-svn: 31112
2006-10-22 09:58:21 +00:00
Reid Spencer
c7212791a4
Regenerate.
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llvm-svn: 31111
2006-10-22 07:03:43 +00:00
Reid Spencer
6309fa1438
Remove unneeded CHECK_FOR_ERROR invocations.
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llvm-svn: 31110
2006-10-22 07:03:09 +00:00
Chris Lattner
7d1d03445e
regenerate
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llvm-svn: 31109
2006-10-22 06:08:13 +00:00
Chris Lattner
fd3d29a978
change keyword to datalayout
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llvm-svn: 31108
2006-10-22 06:07:41 +00:00
Chris Lattner
0489716a67
Change keyword to datalayout
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llvm-svn: 31107
2006-10-22 06:06:56 +00:00
Chris Lattner
af17096dcf
3 Changes:
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1. Better document what is going on here.
2. Only hack on one branch per iteration, making the results less conservative.
3. Handle the problematic case by marking edges executable instead of by
playing with value lattice states. This is far less pessimistic, and fixes
SCCP/ipsccp-gvar.ll.
llvm-svn: 31106
2006-10-22 05:59:17 +00:00
Chris Lattner
9f5a129543
don't break infinite loops
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llvm-svn: 31102
2006-10-21 06:11:43 +00:00
Chris Lattner
23f22de26f
Implement support for branch reversal, fix a bug in branch analysis.
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This provides stuff like:
cmpw cr0, r15, r29
mr r14, r15
- bge cr0, LBB3_111 ;bb656
- b LBB3_90 ;bb501
+ blt cr0, LBB3_90 ;bb501
LBB3_111: ;bb656
lwz r18, 68(r1)
which is particularly good for dispatch group formation.
llvm-svn: 31101
2006-10-21 06:03:11 +00:00
Chris Lattner
28f17f45be
Use branch reversal to do stuff like this:
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call L_strcmp$stub
testl %eax, %eax
- jne LBB26_208 #cond_true6020
- jmp LBB26_227 #bb7119
+ je LBB26_227 #bb7119
LBB26_208: #cond_true6020
movl $l31_str14, 4(%esp)
testl %eax, %eax
- jne LBB26_704 #cond_true13042
- jmp LBB26_713 #bb13151
+ je LBB26_713 #bb13151
LBB26_704: #cond_true13042
movl $_str52, 4(%esp)
cmpl 76(%ecx), %eax
- jge LBB26_1628 #cond_false63.i.i
- jmp LBB26_1769 #_Z8makeGridP13mrSurfaceListidiidd.exit.i
+ jl LBB26_1769 #_Z8makeGridP13mrSurfaceListidiidd.exit.i
LBB26_1628: #cond_false63.i.i
movl $0, 48964(%esp)
llvm-svn: 31100
2006-10-21 05:54:00 +00:00
Chris Lattner
3a897f31fa
Implement support for branch condition reversal.
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llvm-svn: 31099
2006-10-21 05:52:40 +00:00
Chris Lattner
3ca52185af
Transform code like:
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jle FOO
jmp BAR
BAR:
into:
jle FOO
BAR:
... whoa!
llvm-svn: 31098
2006-10-21 05:43:30 +00:00
Chris Lattner
d881660366
Simplify code, no functionality change
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llvm-svn: 31097
2006-10-21 05:42:09 +00:00
Chris Lattner
94e04442eb
implement support for inserting a cond branch
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llvm-svn: 31096
2006-10-21 05:36:13 +00:00
Chris Lattner
6fca75ec05
allow insertion of a conditional branch with fall-through
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llvm-svn: 31095
2006-10-21 05:34:23 +00:00
Chris Lattner
4fe01c42ca
Three changes:
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1. Remove a bunch of ifdef'd code.
2. When a block just contains an uncond branch, change all blocks branching
to it to jump to the destination instead.
3. If branch analysis tells us some edges in the machinecfg are not actually
possible, remove them.
#2 triggers a suprisingly large number of times.
llvm-svn: 31094
2006-10-21 05:08:28 +00:00
Chris Lattner
20e75d4635
update assert message
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llvm-svn: 31093
2006-10-21 04:42:29 +00:00
Chris Lattner
60c9d4dc76
Add an experimental cross-jumping implementation.
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This is currently disabled by default and limited in several ways, but does
have a positive effect.
llvm-svn: 31090
2006-10-21 00:47:49 +00:00
Chris Lattner
33f5af09e4
implement MachineOperand::isIdenticalTo
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llvm-svn: 31088
2006-10-20 22:39:59 +00:00