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
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
93cdd149f7
Rename
...
llvm-svn: 31364
2006-11-01 23:18:32 +00:00
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
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
1b2e60e970
Added getTiedToSrcOperand() to check for two-address'ness.
...
llvm-svn: 31360
2006-11-01 23:00:31 +00:00
1359196c4e
Clean up.
...
llvm-svn: 31359
2006-11-01 22:39:30 +00:00
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
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
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
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
5a0bd61c64
Fix GlobalOpt/2006-11-01-ShrinkGlobalPhiCrash.ll and McGill/chomp
...
llvm-svn: 31352
2006-11-01 18:03:33 +00:00
3576405a26
print null values in bss
...
llvm-svn: 31349
2006-11-01 14:26:44 +00:00
0cd8d14c7c
implement zextload bool and truncstore bool
...
llvm-svn: 31348
2006-11-01 14:13:27 +00:00
91f120f4fa
Add a printSetLabel that takes two id's.
...
llvm-svn: 31347
2006-11-01 09:23:08 +00:00
eebea43b48
Factor gep instructions through phi nodes.
...
llvm-svn: 31346
2006-11-01 07:43:41 +00:00
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
94e5bc9e83
Fix ldmxcsr JIT encoding.
...
llvm-svn: 31343
2006-11-01 06:53:52 +00:00
dc826fc068
Fix a bug in the previous patch
...
llvm-svn: 31342
2006-11-01 04:55:47 +00:00
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
415f365e5c
Print jumptable index.
...
llvm-svn: 31340
2006-11-01 04:48:30 +00:00
5e2e0cb9aa
Remove unnecessary sign conversions made possible by last patch.
...
llvm-svn: 31339
2006-11-01 03:45:43 +00:00
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
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
3ac71b31f0
enable branch folding with an option
...
llvm-svn: 31335
2006-11-01 00:38:31 +00:00
7a6a5b9af5
Add constraints to Instruction class.
...
llvm-svn: 31332
2006-11-01 00:26:27 +00:00
dfbf91e59d
more shotenning
...
llvm-svn: 31331
2006-10-31 23:46:56 +00:00
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
427301fdae
look through isunordered to inline it into branch blocks.
...
llvm-svn: 31328
2006-10-31 22:37:42 +00:00
a41c2d6432
Nuke dead code.
...
llvm-svn: 31327
2006-10-31 21:53:31 +00:00
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
60ce558aaa
implement the 'c' inline asm modifier character
...
llvm-svn: 31325
2006-10-31 20:12:30 +00:00
1fd360e13a
handle global address constant sdnodes
...
llvm-svn: 31323
2006-10-31 20:01:56 +00:00
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
f6a6966cd2
handle "st" as "st(0)"
...
llvm-svn: 31320
2006-10-31 19:42:44 +00:00
6f043b90ea
TargetLowering::isOperandValidForConstraint
...
llvm-svn: 31319
2006-10-31 19:41:18 +00:00
8c6949e5b2
Change the prototype for TargetLowering::isOperandValidForConstraint
...
llvm-svn: 31318
2006-10-31 19:40:43 +00:00
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
eb68f080ef
Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll
...
llvm-svn: 31315
2006-10-31 17:52:18 +00:00
692e4155aa
Add all that branch mangling niftiness
...
llvm-svn: 31313
2006-10-31 16:49:55 +00:00
4e825336a0
add support for calling functions when the caller has variable sized objects
...
llvm-svn: 31312
2006-10-31 13:03:26 +00:00
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
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
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
e6d584765f
Fix a typo which can break jumptables.
...
llvm-svn: 31305
2006-10-31 02:31:00 +00:00
2545fe6d93
Make this compile again.
...
llvm-svn: 31304
2006-10-31 01:45:56 +00:00
de5ecd6bc1
Apply Aton's LLVM patch for PR973: Linux ctors / dtors support.
...
llvm-svn: 31303
2006-10-31 01:26:55 +00:00
7eda51d4cf
Fix a problem introduced by a last-minute change (logic negation).
...
llvm-svn: 31302
2006-10-30 23:34:32 +00:00
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
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