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Commit Graph

17456 Commits

Author SHA1 Message Date
Chris Lattner
50be7cd320 Rework GlobalValue::removeDeadConstantUsers to always remove dead constant
exprs hanging off a global, even if the global is not otherwise dead.  This
requires some tricky iterator gymnastics.

This implements Transforms/GlobalOpt/constantexpr-dangle.ll by deleting a
constantexpr that made it appear that the address of the function was taken.

llvm-svn: 34608
2007-02-25 21:06:13 +00:00
Chris Lattner
2fbfbcd9cd disable some noisy debug output
llvm-svn: 34606
2007-02-25 20:42:59 +00:00
Chris Lattner
796625a49d no really, this is the right patch
llvm-svn: 34605
2007-02-25 20:01:40 +00:00
Chris Lattner
49fc72110a always promote float varargs to double.
llvm-svn: 34604
2007-02-25 19:59:18 +00:00
Reid Spencer
e6f7201099 1. Provide more detail in file comment.
2. Move comments for methods to .h file, delete them in .cpp file.
3. All places that were doing manual clear of high order bits now call the
   clearUnusedBits() method in order to not depend on undefined behavior
   of the >> operator when the number of bits shifted equals the word size.
4. Reduced # of loc by using the new result of clearUnusedBits() method.
5. Simplified logic (decreased indentation) in a few places.
6. Added code comments to larger functions that needed them.
7. Added FIXME notes about weak implementations of things (e.g. bit-by-bit
   shift right is sub-optimal).

llvm-svn: 34603
2007-02-25 19:32:03 +00:00
Chris Lattner
b5ce97a83a one important bugfix: PPC32 didn't have both elf and macho support for
external symbols and global addresses.  Add the missing ones.

one important workaround: PPCISD::CALL is matched by both PPCcall_ELF
and PPCcall_Macho, disable the _ELF patterns for now.

llvm-svn: 34601
2007-02-25 19:20:53 +00:00
Chris Lattner
a9c561b9e6 optimize duplicate ValueMap lookups
llvm-svn: 34599
2007-02-25 18:40:32 +00:00
Dale Johannesen
f6f34ec2e0 cosmetic changes from review of last patch. obvious
llvm-svn: 34598
2007-02-25 18:31:31 +00:00
Evan Cheng
550798e5d5 A couple of more places where a register liveness has been extended and its last kill should be updated accordingly.
llvm-svn: 34597
2007-02-25 09:51:27 +00:00
Evan Cheng
13e48f975c Add an assertion.
llvm-svn: 34596
2007-02-25 09:47:31 +00:00
Evan Cheng
189678c421 Fix a couple of bugs related IsDead back propagation during coalescing.
llvm-svn: 34595
2007-02-25 09:46:31 +00:00
Evan Cheng
8f3e6bfeb3 If the liveinterval of the source instruction has been extended, remove the IsKill marker.
llvm-svn: 34594
2007-02-25 09:41:59 +00:00
Evan Cheng
9968353d64 Only add liveinterval to livein set if it isn't assigned a stack slot.
llvm-svn: 34593
2007-02-25 09:39:02 +00:00
Chris Lattner
65ba08d627 fastcc functions that return double values now return them in xmm0 on x86-32.
This implements CodeGen/X86/fp-stack-ret.ll:test[23]

llvm-svn: 34592
2007-02-25 09:31:16 +00:00
Chris Lattner
e4ba88824d allow vectors to be passed to stdcall/fastcall functions
llvm-svn: 34590
2007-02-25 09:14:25 +00:00
Chris Lattner
fac0b30da0 move LowerRET into the 'Return Value Calling Convention Implementation'
section of the file.

llvm-svn: 34589
2007-02-25 09:12:39 +00:00
Chris Lattner
65d915a3b6 make all Lower*CallTo implementations use LowerCallResult to handle their
result value stuff.  This eliminates a bunch of duplicated code and now
GetRetValueLocs is the sole place that decides where a value is returned.

llvm-svn: 34588
2007-02-25 09:10:05 +00:00
Chris Lattner
423224a7b4 pass the calling convention into Lower*CallTo, instead of using ad-hoc flags.
llvm-svn: 34587
2007-02-25 09:06:15 +00:00
Chris Lattner
8fa75c3ae8 factor a bunch of code out of LowerCCCCallTo into a new LowerCallResult
function.  This function now uses GetRetValueLocs to determine *where*
the result values are located and concerns itself with *how* to pull the
values out.

llvm-svn: 34586
2007-02-25 08:59:22 +00:00
Chris Lattner
3bfbc23ccd move some code around, pass in calling conv, even though it is unused
llvm-svn: 34585
2007-02-25 08:29:00 +00:00
Chris Lattner
e9c4c19b27 fold trivial token factor nodes. This allows us to compile
test/CodeGen/X86/fp-stack-ret.ll into:

        movl 4(%esp), %eax
        fldl (%eax)
        ret

instead of:

        subl $12, %esp
        movl 16(%esp), %eax
        movsd (%eax), %xmm0
        movsd %xmm0, (%esp)
        fldl (%esp)
        addl $12, %esp
        ret

by eliminating a token factor that blocked a check.

llvm-svn: 34584
2007-02-25 08:24:27 +00:00
Chris Lattner
f119813ff4 simplify result value lowering by splitting the selection of *where* to return
registers out from the logic of *how* to return them.

This changes X86-64 to mark EAX live out when returning a 32-bit value,
where before it marked RAX liveout.

llvm-svn: 34582
2007-02-25 08:15:11 +00:00
Reid Spencer
ec6159bbea Allow this to compile now that the header file is checked in.
llvm-svn: 34581
2007-02-25 07:30:14 +00:00
Chris Lattner
bcce79717b make void-return not a special case
llvm-svn: 34579
2007-02-25 07:18:38 +00:00
Chris Lattner
d00fcb3277 eliminate a bunch more temporary vectors from X86 lowering.
llvm-svn: 34578
2007-02-25 07:10:00 +00:00
Chris Lattner
f7eeef816d eliminate temporary vectors created during X86 lowering.
llvm-svn: 34577
2007-02-25 06:40:16 +00:00
Chris Lattner
6f25082e67 remove std::vector's in RET lowering.
llvm-svn: 34576
2007-02-25 06:21:57 +00:00
Chris Lattner
041fb5bc67 implement support for the linux/ppc function call ABI. Patch by
Nicolas Geoffray!

llvm-svn: 34574
2007-02-25 05:34:32 +00:00
Chris Lattner
ed4920842f Add XLForm_1_ext template, patch by Nicolas Geoffray.
llvm-svn: 34573
2007-02-25 05:07:49 +00:00
Chris Lattner
42cfb7c452 Improve JIT support for linux/ppc: Patch by Nicolas Geoffray!
llvm-svn: 34572
2007-02-25 05:04:13 +00:00
Chris Lattner
5adebeb207 this doesn't compile, disable it
llvm-svn: 34571
2007-02-25 02:32:44 +00:00
Reid Spencer
0fd90c3447 Clean up lshr and ashr to coding standards.
Handle the single word cases for shiftAmt == BitWidth.

llvm-svn: 34569
2007-02-25 01:56:07 +00:00
Dale Johannesen
6e366a1006 remove crediting of Evan Cheng and me.
llvm-svn: 34568
2007-02-25 01:42:36 +00:00
Chris Lattner
b9f2992e38 initialize a instance variable
llvm-svn: 34567
2007-02-25 01:28:05 +00:00
Reid Spencer
66e162cfcd Whoops, last word with bits in large shift left wasn't correct.
llvm-svn: 34565
2007-02-25 01:08:58 +00:00
Reid Spencer
4dcbccdc99 Fix the > 64 bits case for left shift.
llvm-svn: 34564
2007-02-25 00:56:44 +00:00
Dale Johannesen
ccecc12da5 Removed WaterListOffset, inserted BBOffsets. Remove TODO item about this
from README.
When no water available, use end of block if in range.  (More to do here.)

llvm-svn: 34563
2007-02-25 00:47:03 +00:00
Reid Spencer
ecc067a698 Fix the remainder shifting in KnuthDiv.
llvm-svn: 34562
2007-02-24 20:38:01 +00:00
Reid Spencer
d6956a0e8c 1. Fix a bug in fromString for the <= 64bits case
2. Fix shl when shiftAmount == BitWidth.

llvm-svn: 34560
2007-02-24 20:19:37 +00:00
Reid Spencer
e2bb0cf83e 1. Fix last bug in KnuthDiv. All divide tests pass up to 1024 bits now.
2. Clean up comments, style, coding standards, etc.
3. Simplify a constructor.

Extended testing revealed some additional bugs in shifting. I'll fix these
tomorrow.

llvm-svn: 34559
2007-02-24 10:01:42 +00:00
Jim Laskey
53e71a9657 Deal with cases when MMI is not requested.
llvm-svn: 34556
2007-02-24 09:45:44 +00:00
Jim Laskey
10c6c6b46d Drop unused operand.
llvm-svn: 34555
2007-02-24 09:44:17 +00:00
Reid Spencer
b45646b14e 1. Make internal functions take const arguments where they should, just
to be safe.
2. Make internal functions that return a carry/borrow return bool instead
   of uint64_t because the carry/borrow can only be in range [0,1].
3. Assert that the pointers to KnuthDiv are all different so that the
   result and operands can't overlap.
4. Add debug output to KnuthDiv function.
5. Fix a problem with KnuthDiv by separating the b's complement operation
   from the subtraction borrow operation. This fixes a wide range of
   division problems, but alas, not all of them.

llvm-svn: 34554
2007-02-24 03:58:46 +00:00
Chris Lattner
28f1c620c6 Fix PR1216 by cleaning up the ownership of JITResolver.
llvm-svn: 34552
2007-02-24 02:57:03 +00:00
Chris Lattner
6faf9e8e97 Fix CodeGen/Generic/2007-02-23-DAGCombine-Miscompile.ll and PR1219
llvm-svn: 34551
2007-02-24 02:09:29 +00:00
Chris Lattner
e37ee33c4e remove folding set debug output
llvm-svn: 34549
2007-02-24 01:41:48 +00:00
Chris Lattner
5480ffb904 Fix Transforms/ConstProp/2007-02-23-sdiv.ll and PR1215
llvm-svn: 34548
2007-02-24 01:19:50 +00:00
Chris Lattner
14217fb105 Fix InstCombine/2007-02-23-PhiFoldInfLoop.ll and PR1217
llvm-svn: 34546
2007-02-24 01:03:45 +00:00
Chris Lattner
0eb72353e4 Refactor the setName stuff, moving it down the inheritance hierarchy, to
solve a crash in -instcombine -debug that was hit while investigating PR1217

llvm-svn: 34544
2007-02-24 00:55:48 +00:00
Bill Wendling
2c5f64532b PR1164:
Generate local names with a "llvm_cbe_" prefix using the actual name of the
variable instead of a temporary name.

llvm-svn: 34540
2007-02-23 22:45:08 +00:00