Reid Spencer
6890147648
Add support for the noreturn and nounwind function attributes.
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llvm-svn: 35258
2007-03-22 02:13:23 +00:00
Nick Lewycky
428523f51a
Fix broken optimization disabled by a logic bug.
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Analyze GEPs. If the indices are all zero, transfer whether the pointer is
known to be not null through the GEP.
Add a few more cases for xor and shift instructions.
llvm-svn: 35257
2007-03-22 02:02:51 +00:00
Evan Cheng
d7be4893f4
More opportunities to reduce load size.
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llvm-svn: 35254
2007-03-22 01:54:19 +00:00
Evan Cheng
da92165bab
Fix for PR1257. Bug in live range shortening as a result of copy coalescing
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where the destination is dead.
llvm-svn: 35252
2007-03-22 01:26:05 +00:00
Reid Spencer
bdfbda05fb
For PR1248:
...
* Fix some indentation and comments in InsertRangeTest
* Add an "IsSigned" parameter to AddWithOverflow and make it handle signed
additions. Also, APIntify this function so it works with any bitwidth.
* For the icmp pred ([us]div %X, C1), C2 transforms, exit early if the
div instruction's RHS is zero.
* Finally, for icmp pred (sdiv %X, C1), -C2, fix an off-by-one error. The
HiBound needs to be incremented in order to get the range test correct.
llvm-svn: 35247
2007-03-21 23:19:50 +00:00
Dale Johannesen
44c0a5d545
repair x86 performance, dejagnu problems from previous change
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llvm-svn: 35245
2007-03-21 21:51:52 +00:00
Anton Korobeynikov
c0842af02d
Add TODO list for MSIL backend
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llvm-svn: 35244
2007-03-21 21:48:59 +00:00
Anton Korobeynikov
bc43d296b2
Let the new backend begin!
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llvm-svn: 35242
2007-03-21 21:38:25 +00:00
Dale Johannesen
fb7b59f5dd
add generation of unnecessary push/pop around calls
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llvm-svn: 35241
2007-03-21 21:16:39 +00:00
Evan Cheng
9867632e64
fold (truncate (srl (load x), c)) -> (smaller load (x+c/vt bits))
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llvm-svn: 35239
2007-03-21 20:14:05 +00:00
Nicolas Geoffray
205541ef78
Protect R31's frame offset from being used by callee-saved registers, when R31
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is the frame pointer.
llvm-svn: 35233
2007-03-21 16:44:14 +00:00
Zhou Sheng
427b6bec97
Fix a bug in getAllOnesValue() which broke
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some test cases for bitwidth > 64.
llvm-svn: 35232
2007-03-21 04:34:37 +00:00
Evan Cheng
00a5cbf9e7
Mark re-materializable instructions.
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llvm-svn: 35230
2007-03-21 00:16:56 +00:00
Evan Cheng
fb9c4c2edc
Updated.
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llvm-svn: 35229
2007-03-20 22:32:39 +00:00
Evan Cheng
516a83595d
Potential spiller improvement.
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llvm-svn: 35228
2007-03-20 22:22:38 +00:00
Dale Johannesen
3e422e3b49
do not share old induction variables when this would result in invalid
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instructions (that would have to be split later)
llvm-svn: 35227
2007-03-20 21:54:54 +00:00
Dale Johannesen
50a22f6fe6
maintain LiveIn when splitting blocks (register scavenging needs it)
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llvm-svn: 35226
2007-03-20 21:35:06 +00:00
Devang Patel
3a426e1c86
DominanceFrontier::calculate().
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Avoid recursion, Use iterative algorithm.
llvm-svn: 35225
2007-03-20 21:25:31 +00:00
Jeff Cohen
8dea6ada6f
Fix some VC++ warnings.
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llvm-svn: 35224
2007-03-20 20:43:18 +00:00
Jeff Cohen
21c7fc9c1f
Fix (and simplify) 48-bit byte swap.
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Get pos/neg infinity the correct way.
llvm-svn: 35223
2007-03-20 20:42:36 +00:00
Devang Patel
18146cf2a2
LoopSimplify::FindPHIToPartitionLoops()
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Use ETForest instead of DominatorSet.
llvm-svn: 35221
2007-03-20 20:18:12 +00:00
Lauro Ramos Venancio
632ac0e289
Code clean up.
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llvm-svn: 35220
2007-03-20 20:09:03 +00:00
Evan Cheng
fe301e0f29
Minor bug.
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llvm-svn: 35219
2007-03-20 19:32:11 +00:00
Lauro Ramos Venancio
11d7d3fcaf
bugfix: When the source register of CALL_NOLINK was LR, the following code was emitted:
...
mov lr, pc
bx lr
So, the function was not called.
llvm-svn: 35218
2007-03-20 17:57:23 +00:00
Reid Spencer
d37f0f007d
Regenerate.
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llvm-svn: 35215
2007-03-20 17:19:31 +00:00
Reid Spencer
3cc307f4d7
Don't delete things before their last use (avoids bad reads).
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llvm-svn: 35214
2007-03-20 17:18:33 +00:00
Lauro Ramos Venancio
9659c8befc
CopyToReg source operand can be a physical register.
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llvm-svn: 35213
2007-03-20 16:46:44 +00:00
Zhou Sheng
0ae1c9e1ad
Simplify isHighOnes().
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llvm-svn: 35211
2007-03-20 12:49:06 +00:00
Evan Cheng
0176b9859d
First cut trivial re-materialization support.
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llvm-svn: 35208
2007-03-20 08:13:50 +00:00
Evan Cheng
4fec9d7228
Make two piece constant generation as a single instruction. It's re-materialized as a load from constantpool.
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llvm-svn: 35207
2007-03-20 08:11:30 +00:00
Evan Cheng
11976abd1e
New entry.
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llvm-svn: 35206
2007-03-20 08:10:17 +00:00
Evan Cheng
41f4f032ee
Added MRegisterInfo hook to re-materialize an instruction.
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llvm-svn: 35205
2007-03-20 08:09:38 +00:00
Chris Lattner
b9cc0ade43
Two changes:
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1) codegen a shift of a register as a shift, not an LEA.
2) teach the RA to convert a shift to an LEA instruction if it wants something
in three-address form.
This gives us asm diffs like:
- leal (,%eax,4), %eax
+ shll $2, %eax
which is faster on some processors and smaller on all of them.
and, more interestingly:
- movl 24(%esi), %eax
- leal (,%eax,4), %edi
+ movl 24(%esi), %edi
+ shll $2, %edi
Without #2 , #1 was a significant pessimization in some cases.
This implements CodeGen/X86/shift-codegen.ll
llvm-svn: 35204
2007-03-20 06:08:29 +00:00
Chris Lattner
1ed603c0d9
fix indentation
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llvm-svn: 35202
2007-03-20 02:25:53 +00:00
Reid Spencer
81602be7e3
Regenerate.
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llvm-svn: 35199
2007-03-20 01:13:36 +00:00
Reid Spencer
4a8b426ab2
Plug some PATypeHolder memory leaks.
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llvm-svn: 35198
2007-03-20 01:13:00 +00:00
Dale Johannesen
516d98c710
use types of loads and stores, not address, in CheckForIVReuse
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llvm-svn: 35197
2007-03-20 00:47:50 +00:00
Dale Johannesen
c526b970ce
fix obvious comment bug
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llvm-svn: 35196
2007-03-20 00:30:56 +00:00
Chris Lattner
6dbed4d4ca
Fix a nasty memory leak, caused by my revamp of the value symbol table.
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llvm-svn: 35195
2007-03-20 00:18:10 +00:00
Reid Spencer
2f1ee85f90
Make isOneBitSet faster by using APInt::isPowerOf2. Thanks Chris.
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llvm-svn: 35194
2007-03-20 00:16:52 +00:00
Reid Spencer
a792b71ab3
APIntify the isHighOnes utility function.
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llvm-svn: 35190
2007-03-19 21:29:50 +00:00
Reid Spencer
41d254c7f4
Fix coding standards violation.
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llvm-svn: 35189
2007-03-19 21:19:02 +00:00
Reid Spencer
4009f1eacb
Implement isMaxValueMinusOne in terms of APInt instead of uint64_t.
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Patch by Sheng Zhou.
llvm-svn: 35188
2007-03-19 21:10:28 +00:00
Reid Spencer
57a15f4445
Implement isMinValuePlusOne using facilities of APInt instead of uint64_t
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Patch by Zhou Sheng.
llvm-svn: 35187
2007-03-19 21:08:07 +00:00
Reid Spencer
1985e3645b
Implement isOneBitSet in terms of APInt::countPopulation.
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llvm-svn: 35186
2007-03-19 21:04:43 +00:00
Reid Spencer
367a2917c0
1. Use APInt::getSignBit to reduce clutter (patch by Sheng Zhou)
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2. Replace uses of the "isPositive" utility function with APInt::isPositive
llvm-svn: 35185
2007-03-19 20:58:18 +00:00
Reid Spencer
49ea42b719
Remove a redundant clause in an if statement.
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Patch by Sheng Zhou.
llvm-svn: 35184
2007-03-19 20:47:50 +00:00
Reid Spencer
ea5bcde3c8
Regenerate.
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llvm-svn: 35183
2007-03-19 20:40:51 +00:00
Reid Spencer
7f92fc05cd
Fix test/Assembler/2007-03-19-NegValue.ll by using the new "isSigned"
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parameter on ConstantInt::get to indicate the signedness of the intended
value.
llvm-svn: 35182
2007-03-19 20:40:22 +00:00
Reid Spencer
7d20e42a97
Allow ConstantInt::get(Ty, uint64_t) to interpret the 64-bit values as a
...
negative number. This is needed to fix test/Assembler/2007-03-19-NegValue.ll
llvm-svn: 35181
2007-03-19 20:39:08 +00:00