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Author SHA1 Message Date
Evan Cheng
968135bd3f findRegisterUseOperand() changed. 
llvm-svn: 35366
 2007-03-26 22:41:48 +00:00
Evan Cheng
0ff19780f9 Fix for PR1266. Don't mark a two address operand IsKill. 
llvm-svn: 35365
 2007-03-26 22:40:42 +00:00
Reid Spencer
39f16aef65 For PR1277: 
Implement error handling for bytecode parsing.

Patch by Scott Michel.

llvm-svn: 35364
 2007-03-26 22:38:01 +00:00
Evan Cheng
201771637e Change findRegisterUseOperand() to return operand index instead. 
llvm-svn: 35363
 2007-03-26 22:37:45 +00:00
Dale Johannesen
3ad8ab7b61 Fix reversed logic in getRegsUsed. Rename RegStates to RegsAvailable to 
hopefully forestall similar errors.

llvm-svn: 35362
 2007-03-26 22:23:54 +00:00
Chris Lattner
16700ef424 eliminate use of std::set 
llvm-svn: 35361
 2007-03-26 20:40:50 +00:00
Reid Spencer
4af99334ea Add a comment to explain a folding transform. 
llvm-svn: 35360
 2007-03-26 20:09:02 +00:00
Reid Spencer
5bc306e0ea Fix this test case to match output after a bug was fixed. 
llvm-svn: 35359
 2007-03-26 18:04:38 +00:00
Reid Spencer
73d778edb7 Get better debug output by having modified instructions print both the 
original and new instruction. A slight performance hit with ostringstream
but it is only for debug.
Also, clean up an uninitialized variable warning noticed in a release build.

llvm-svn: 35358
 2007-03-26 17:44:01 +00:00
Reid Spencer
3fea170ecd Get the number of bits to set in a mask correct for a shl/lshr transform. 
llvm-svn: 35357
 2007-03-26 17:18:58 +00:00
Duncan Sands
c0e64ed143 Fix testsuite hang. 
llvm-svn: 35355
 2007-03-26 10:59:13 +00:00
Reid Spencer
94d080b51a For PR601: 
Initial skeleton for pass documentation.

llvm-svn: 35354
 2007-03-26 09:32:31 +00:00
Bill Wendling
8065cc3173 Promote to v1i64 type... 
llvm-svn: 35353
 2007-03-26 08:03:33 +00:00
Bill Wendling
3c4e130b77 Updated. 
llvm-svn: 35352
 2007-03-26 07:55:58 +00:00
Bill Wendling
a42484728c Add support for the v1i64 type. This makes better code for this: 
#include <mmintrin.h>

extern __m64 C;

void baz(__v2si *A, __v2si *B)
{
  *A = C;
  _mm_empty();
}

We get this:

_baz:
        call "L1$pb"
"L1$pb":
        popl %eax
        movl L_C$non_lazy_ptr-"L1$pb"(%eax), %eax
        movq (%eax), %mm0
        movl 4(%esp), %eax
        movq %mm0, (%eax)
        emms
        ret

GCC gives us this:

_baz:
        pushl   %ebx
        call    L3
"L00000000001$pb":
L3:
        popl    %ebx
        subl    $8, %esp
        movl    L_C$non_lazy_ptr-"L00000000001$pb"(%ebx), %eax
        movl    (%eax), %edx
        movl    4(%eax), %ecx
        movl    16(%esp), %eax
        movl    %edx, (%eax)
        movl    %ecx, 4(%eax)
        emms
        addl    $8, %esp
        popl    %ebx
        ret

llvm-svn: 35351
 2007-03-26 07:53:08 +00:00
Evan Cheng
5b1c21d27b SIGN_EXTEND_INREG requires one extra operand, a ValueType node. 
llvm-svn: 35350
 2007-03-26 07:12:51 +00:00
Reid Spencer
e2ada5822c Test case for PR1271 involving construction of a bad mask to replace a 
shift instruction.

llvm-svn: 35349
 2007-03-26 05:32:16 +00:00
Reid Spencer
a6a4dbd24e For PR1271: 
Fix SingleSource/Regression/C/2003-05-21-UnionBitFields.c by changing a
getHighBitsSet call to getLowBitsSet call that was incorrectly converted
from the original lshr constant expression.

llvm-svn: 35348
 2007-03-26 05:25:00 +00:00
Dale Johannesen
43fc14d6e4 Look through bitcast when finding IVs. (Chris' patch really.) 
llvm-svn: 35347
 2007-03-26 03:01:27 +00:00
Chris Lattner
cc91b2a91d Start value symbol tables out small (space for 16 elts), not huge (space for 512). 
This is particularly useful for the JIT, which lazily deserializes functions.

llvm-svn: 35346
 2007-03-26 01:45:35 +00:00
Anton Korobeynikov
e1787d5f46 Add "feature" testcase for new switch lowering code 
llvm-svn: 35345
 2007-03-25 22:01:14 +00:00
Reid Spencer
4984ab6c01 Compute getLowBitsSet correctly. Using the complement of a 64-bit value 
and shifting down without regard for the bitwidth of the APInt can lead
to incorrect initialization values. Instead, check for the word size case
(to avoid undef results from shift) and then do (1 << loBitsSet) - 1

llvm-svn: 35344
 2007-03-25 21:58:42 +00:00
Reid Spencer
c48255bfcf Add a test case for PR1271 (necessary, but not sufficient). 
llvm-svn: 35343
 2007-03-25 21:30:41 +00:00
Reid Spencer
4d3d7d0f2a For PR1271: 
Remove a use of getLowBitsSet that caused the mask used for replacement of
shl/lshr pairs with an AND instruction to be computed incorrectly. Its not
clear exactly why this is the case. This solves the disappearing shifts
problem, but it doesn't fix Regression/C/2003-05-21-UnionBitFields. It
seems there is more going on.

llvm-svn: 35342
 2007-03-25 21:11:44 +00:00
Chris Lattner
26cfd91db8 implement Transforms/InstCombine/cast2.ll:test3 and PR1263 
llvm-svn: 35341
 2007-03-25 20:43:09 +00:00
Chris Lattner
c5657ac790 new testcase 
llvm-svn: 35340
 2007-03-25 20:42:40 +00:00
Reid Spencer
1677543a3a Some cleanup from review: 
* Don't assume shift amounts are <= 64 bits
* Avoid creating an extra APInt in SubOne and AddOne by using -- and ++
* Add another use of getLowBitsSet
* Convert a series of if statements to a switch

llvm-svn: 35339
 2007-03-25 19:55:33 +00:00
Anton Korobeynikov
6f78c59650 First step of switch lowering refactoring: perform worklist-driven 
strategy, emit JT's where possible.

llvm-svn: 35338
 2007-03-25 15:07:15 +00:00
Anton Korobeynikov
a5e854461f Fix authorship 
llvm-svn: 35337
 2007-03-25 13:44:26 +00:00
Chris Lattner
f4ff1dc689 fold constantexprs more aggressively, fixing PR1265 
llvm-svn: 35336
 2007-03-25 05:47:04 +00:00
Reid Spencer
8449e5fa0e Refactor several ConstantExpr::getXXX calls with ConstantInt arguments 
using the facilities of APInt. While this duplicates a tiny fraction of
the constant folding code, it also makes the code easier to read and
avoids large ConstantExpr overhead for simple, known computations.

llvm-svn: 35335
 2007-03-25 05:33:51 +00:00
Chris Lattner
ee90a087a6 add a note 
llvm-svn: 35334
 2007-03-25 05:10:46 +00:00
Zhou Sheng
3312a86598 1. Avoid unnecessary APInt construction if possible. 
2. Use isStrictlyPositive() instead of isPositive() in two places where
   they need APInt value > 0 not only >=0.

llvm-svn: 35333
 2007-03-25 05:01:29 +00:00
Chris Lattner
6f17a615cb Implement support for vector operands to inline asm, implementing 
CodeGen/X86/2007-03-24-InlineAsmVectorOp.ll

llvm-svn: 35332
 2007-03-25 05:00:54 +00:00
Chris Lattner
99ba969ae3 new testcase 
llvm-svn: 35331
 2007-03-25 05:00:23 +00:00
Chris Lattner
6d8bbccee0 add a note 
llvm-svn: 35330
 2007-03-25 04:46:28 +00:00
Chris Lattner
31c6763051 Fix CodeGen/PowerPC/2007-03-24-cntlzd.ll 
llvm-svn: 35329
 2007-03-25 04:44:03 +00:00
Chris Lattner
a01030bcf4 test that the ppc backend can do 64-bit cntlz 
llvm-svn: 35328
 2007-03-25 04:43:51 +00:00
Chris Lattner
4a7feb72f5 implement initial support for the silly X constraint. Testcase here: CodeGen/X86/2007-03-24-InlineAsmXConstraint.ll 
llvm-svn: 35327
 2007-03-25 04:35:41 +00:00
Chris Lattner
60fa65770f new testcase 
llvm-svn: 35326
 2007-03-25 04:35:23 +00:00
Reid Spencer
e601991a5e Make more uses of getHighBitsSet and get rid of some pointless & of an 
APInt with its type mask.

llvm-svn: 35325
 2007-03-25 04:26:16 +00:00
Chris Lattner
91adfbe0ff Implement CodeGen/X86/2007-03-24-InlineAsmMultiRegConstraint.ll 
llvm-svn: 35324
 2007-03-25 02:18:14 +00:00
Chris Lattner
6aa707f1b2 new testcase 
llvm-svn: 35323
 2007-03-25 02:17:58 +00:00
Chris Lattner
b19069959d switch TargetLowering::getConstraintType to take the entire constraint, 
not just the first letter.  No functionality change.

llvm-svn: 35322
 2007-03-25 02:14:49 +00:00
Reid Spencer
676eeb9c94 More APIntification: 
* Convert the last use of a uint64_t that should have been an APInt.
* Change ComputeMaskedBits to have a const reference argument for the Mask
  so that recursions don't cause unneeded temporaries. This causes temps
  to be needed in other places (where the mask has to change) but this
  change optimizes for the recursion which is more frequent.
* Remove two instances of &ing a Mask with getAllOnesValue. Its not
  needed any more because APInt is accurate in its bit computations.
* Start using the getLowBitsSet and getHighBits set methods on APInt
  instead of shifting. This makes it more clear in the code what is
  going on.

llvm-svn: 35321
 2007-03-25 02:03:12 +00:00
Chris Lattner
18c3c6a01d Allow the b/h/w/k constraints to be applied to values that have multiple alternatives, and end up not being registers. 
llvm-svn: 35320
 2007-03-25 02:01:03 +00:00
Chris Lattner
104e73382c enforce the proper range for the i386 N constraint. 
llvm-svn: 35319
 2007-03-25 01:57:35 +00:00
Chris Lattner
92e2ee7b2d Fix test/CodeGen/X86/2007-03-24-InlineAsmPModifier.ll 
llvm-svn: 35318
 2007-03-25 01:44:57 +00:00
Chris Lattner
62598bf96c new testcase 
llvm-svn: 35317
 2007-03-25 01:44:40 +00:00
Reid Spencer
b5b291924a Fix a typo in a comment. 
llvm-svn: 35316
 2007-03-25 01:13:46 +00:00