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Author SHA1 Message Date
Reid Spencer
c3f0724204 For PR1205: 
Provide an APIntified version of MaskedValueIsZero. This will (temporarily)
cause a "defined but not used" message from the compiler. It will be used
in the next patch in this series.

Patch by Sheng Zhou.

llvm-svn: 35019
 2007-03-08 01:52:58 +00:00
Reid Spencer
6a924d1a1d For PR1205: 
Add a new ComputeMaskedBits function that is APIntified. We'll slowly
convert things over to use this version. When its all done, we'll remove
the existing version.

llvm-svn: 35018
 2007-03-08 01:46:38 +00:00
Evan Cheng
c79408b032 For Darwin, put constant data into .const, .const_data, .literal{4|8|16} 
sections.

llvm-svn: 35017
 2007-03-08 01:25:25 +00:00
Evan Cheng
14b63d89c1 Put constant data to .const, .const_data, .literal{4|8|16} sections. 
llvm-svn: 35016
 2007-03-08 01:07:07 +00:00
Evan Cheng
6bf2f3665e Add ReadOnlySection directive. 
llvm-svn: 35015
 2007-03-08 01:00:38 +00:00
Evan Cheng
7513c95267 Added ContainsRelocations() to check if a constant might only be resolvable at load time. 
llvm-svn: 35014
 2007-03-08 00:59:12 +00:00
Evan Cheng
51c3e53eb7 Only safe to use a call-clobbered or spilled callee-saved register as scratch register. 
llvm-svn: 35010
 2007-03-07 20:30:36 +00:00
Bill Wendling
8f49ba1000 Remove useless pattern fragments. 
llvm-svn: 35009
 2007-03-07 18:23:09 +00:00
Anton Korobeynikov
85d6c1ebad Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.

llvm-svn: 35008
 2007-03-07 16:25:09 +00:00
Anton Korobeynikov
a24b167902 Cleanup: make SetCounter an instance variable 
llvm-svn: 35007
 2007-03-07 08:25:02 +00:00
Evan Cheng
2f55532e84 Avoid combining indexed load further. 
llvm-svn: 35005
 2007-03-07 08:07:03 +00:00
Devang Patel
6a56e3c1a0 Now IndVarSimplify is a LoopPass. 
llvm-svn: 35003
 2007-03-07 06:39:01 +00:00
Bill Wendling
3c201ddd02 Properly support v8i8 and v4i16 types. It now converts them to v2i32 for 
load and stores.

llvm-svn: 35002
 2007-03-07 05:43:18 +00:00
Devang Patel
16107bb71b Now LICM is a LoopPass. 
llvm-svn: 35001
 2007-03-07 04:41:30 +00:00
Anton Korobeynikov
090c2d50ea Fix DWARF debugging information on x86/Linux and (hopefully) 
Mingw32/Cygwin targets. This fixes PR978

llvm-svn: 35000
 2007-03-07 02:47:57 +00:00
Evan Cheng
493960579f ARM always use register scavenger. No longer reserves R12. 
llvm-svn: 34999
 2007-03-07 02:46:23 +00:00
Evan Cheng
4e01b11512 Fix some brittle code. Watch out for cases where register scavenger is pointing to deleted instructions. 
llvm-svn: 34998
 2007-03-07 02:38:05 +00:00
Devang Patel
3a24891f80 Now LoopUnroll is a LoopPass. 
llvm-svn: 34996
 2007-03-07 01:38:05 +00:00
Devang Patel
c35610b9f9 Now LoopUnswitch is a LoopPass. 
llvm-svn: 34992
 2007-03-07 00:26:10 +00:00
Evan Cheng
9839628fd1 Fix one more Thumb eliminateFrameIndex bug. 
llvm-svn: 34990
 2007-03-07 00:12:18 +00:00
Reid Spencer
012677ae92 Fix all of last night's JIT failures in Prolangs-C++ by finishing the 
implementation of getConstantValue().

llvm-svn: 34988
 2007-03-06 22:23:15 +00:00
Evan Cheng
63ffd3e17f Register scavenging is now on by default for ARM. 
llvm-svn: 34987
 2007-03-06 22:02:53 +00:00
Evan Cheng
6453ad00d2 Make load / store optimizer use register scavenger. 
llvm-svn: 34986
 2007-03-06 21:59:20 +00:00
Evan Cheng
49e8bd5e17 Minor bug fix. 
llvm-svn: 34985
 2007-03-06 21:58:15 +00:00
Devang Patel
0b82378a28 Now LoopStrengthReduce is a LoopPass. 
llvm-svn: 34984
 2007-03-06 21:14:09 +00:00
Chris Lattner
cf70993bba big endian 32-bit systems (e.g. ppc32) want to return the high reg first, not 
the lo-reg first.  This is fallout from my ppc calling conv change yesterday,
it fixes test/ExecutionEngine/2003-05-06-LivenessClobber.llx

llvm-svn: 34983
 2007-03-06 20:01:06 +00:00
Devang Patel
bee9c51214 Insert loop into LQ before visiting children. 
llvm-svn: 34982
 2007-03-06 19:50:49 +00:00
Anton Korobeynikov
42d0886ca0 Small eye-candy: use asciz directive everywhere, where possible. 
llvm-svn: 34981
 2007-03-06 19:25:02 +00:00
Devang Patel
57322d0462 Use schedulePass() instead of assignPassManager() to add new LPPassManager. 
This ensures that require analysis info is available.

llvm-svn: 34980
 2007-03-06 19:11:25 +00:00
Devang Patel
b44e86318e Add LPPassManager::insertLoop(). 
llvm-svn: 34979
 2007-03-06 19:00:02 +00:00
Bill Wendling
a02d43fbbd Add LOAD/STORE support for MMX. 
llvm-svn: 34978
 2007-03-06 18:53:42 +00:00
Devang Patel
8490ffbcdc LPPassManager::deleteLoopFromQueue() add meat. Cut-n-paste code from 
LoopUnswitch pass.

llvm-svn: 34977
 2007-03-06 18:38:33 +00:00
Evan Cheng
228403bfcb Code clean up. Prepare to use register scavenger. 
llvm-svn: 34976
 2007-03-06 18:02:41 +00:00
Devang Patel
d3cf506865 LPPassManager. Implement preparePassManager() hook. 
llvm-svn: 34975
 2007-03-06 17:59:37 +00:00
Devang Patel
b9e705f09e Keep track of higher level analysis. 
llvm-svn: 34974
 2007-03-06 17:52:53 +00:00
Devang Patel
e3abf559e5 LPPassManager : Add initialization and finalizatino hooks. 
llvm-svn: 34968
 2007-03-06 16:59:03 +00:00
Evan Cheng
b0c0d22f30 Minor interface change. 
llvm-svn: 34967
 2007-03-06 10:05:14 +00:00
Evan Cheng
7c90fb2d67 Scavenge a register using the register scavenger when needed. 
llvm-svn: 34966
 2007-03-06 10:03:56 +00:00
Evan Cheng
73678177cd If target decides to create an emergency spill slot, make sure it's closest to SP or frame pointer. 
llvm-svn: 34965
 2007-03-06 10:02:38 +00:00
Evan Cheng
077516f441 Register scavenger is now capable of scavenging. It spills a register whose use of furthest away to make it available. 
llvm-svn: 34964
 2007-03-06 10:01:25 +00:00
Anton Korobeynikov
6da6c8c48b Use new SDIselParamAttr enumeration. This removes "magick" constants 
from formal attributes' flags processing.

llvm-svn: 34963
 2007-03-06 08:12:33 +00:00
Anton Korobeynikov
4558f01db9 Enumerate SDISel formal parameter attributes. Make use of new 
enumeration.

llvm-svn: 34960
 2007-03-06 06:10:33 +00:00
Anton Korobeynikov
d0375d0852 Implement PR1240 
llvm-svn: 34959
 2007-03-06 05:32:48 +00:00
Reid Spencer
cab64ae896 1. Make StoreValueToMemory a little more efficient by not requiring caller 
to make a copy of the GenericValue.
2. Fix a copy & paste bug in StoreValueToMemory where 64-bit values were
   truncated to 32

llvm-svn: 34958
 2007-03-06 05:03:16 +00:00
Reid Spencer
5816281df1 Fix some thinko's in the last patch. PtrSize has to be in bits and we 
might need to zext not just trunc the value.

llvm-svn: 34955
 2007-03-06 03:46:41 +00:00
Reid Spencer
854b342a38 Fix a bug in IntToPtr. Truncating to 64-bits only works if the integer 
is larger. Adjust so that it truncates to pointer width, only if necessary.

llvm-svn: 34954
 2007-03-06 03:41:50 +00:00
Reid Spencer
3b08509917 Simplify code as a result of the change in GenericValue to have a single 
integer field of type APInt instead of different sized integer fields.

llvm-svn: 34952
 2007-03-06 03:11:31 +00:00
Reid Spencer
d333ccc051 Radically simplify execution. This patch gets rid of all the special 
handling for integer of various sizes. GenericValue now has just a single
integer field of type APInt. We use its facilities directly in the
execution of all instructions.

llvm-svn: 34951
 2007-03-06 03:09:31 +00:00
Reid Spencer
ccb2a63443 Adjust and simplify external function processing now that GenericValue has 
a single integer field of type APInt.

llvm-svn: 34950
 2007-03-06 03:08:12 +00:00
Reid Spencer
7985dd51a2 APInt's are no longer allocated on the heap because they are direct 
members of GenericValue. Consequently the code to clean them up isn't
needed.

llvm-svn: 34948
 2007-03-06 03:06:48 +00:00
Reid Spencer
0e27441b52 Remove the insufficient code in Interpreter::create that computed the 
Target DataLayout incorrectly. For now, we'll trust that the module has
got the correct DataLayout. In the future, this needs to be changed to
tell the TargetData to be "current host".

llvm-svn: 34947
 2007-03-06 03:05:57 +00:00
Reid Spencer
6243e2253d Simplify things significantly because GenericValue now has a single integer 
field, of type APInt, instead of multiple integer fields. Also, get rid of
the special endianness code in StoreValueToMemory and LoadValueToMemory.
ExecutionEngine is always used to execute on the host platform so this is
now unnecessary.

llvm-svn: 34946
 2007-03-06 03:04:04 +00:00
Devang Patel
e4da6fa801 Use std::deque to manage loop queue inside LPPassManager. 
llvm-svn: 34943
 2007-03-06 02:30:46 +00:00
Devang Patel
45343b04b3 Keep track of inherited analysis. For example, if a loop pass does not 
preserve dominator info then it should update parent FPPassManager's
available analysis info to reflect this.

llvm-svn: 34942
 2007-03-06 01:55:46 +00:00
Devang Patel
edbde240be Add preparePassManager() hook. This allows each pass to check whether 
current active pass manager is appropriate or not.

A loop pass may consider current LPPassManager in appropraite if loop
pass is not preserving analysis information that is used by other
passes managed by current LPPassManager. In such situation, loop pass
can pop current LPPassManager from the PMStack using this  hook
and use new LPPassManager for itself.

llvm-svn: 34941
 2007-03-06 01:06:16 +00:00
Chris Lattner
26a5492049 Switch PPC return lower to use an autogenerated CC description. 
llvm-svn: 34940
 2007-03-06 00:59:59 +00:00
Reid Spencer
db1c09aef1 Remove an unnecessary if statement and adjust indentation. 
llvm-svn: 34939
 2007-03-05 23:36:13 +00:00
Bill Wendling
c52174dee3 Add the emms intrinsic for MMX support. 
llvm-svn: 34938
 2007-03-05 23:09:45 +00:00
Devang Patel
79495d839e Current pass manager, not the parent pass manager, assumes the role of 
last user when one of the managed pass uses info provided by parent pass
manager.

This was exposed by LPPassManager work.

llvm-svn: 34936
 2007-03-05 22:57:49 +00:00
Devang Patel
6668a341ae Avoid constructing std::strings unless pass debugging is ON. 
llvm-svn: 34933
 2007-03-05 20:01:30 +00:00
Devang Patel
ca90313b39 Account for time consumed by releaseMemory() properly. 
llvm-svn: 34932
 2007-03-05 18:20:51 +00:00
Lauro Ramos Venancio
3f855f6a54 Use init_array/fini_array sections for static contructors/destructors when the ABI is AAPCS. 
Fix SingleSource/Regression/C/ConstructorDestructorAttributes test on arm-linux-gnueabi.

llvm-svn: 34931
 2007-03-05 17:59:58 +00:00
Chris Lattner
b0de2b2a9c This is the first major step of implementing PR1226. We now successfully 
scalarrepl things down to elements, but mem2reg can't promote elements that
are memset/memcpy'd.  Until then, the code is disabled "0 &&".

llvm-svn: 34924
 2007-03-05 07:52:57 +00:00
Jeff Cohen
01cb8d6857 Ensure 64-bit correctness. 
llvm-svn: 34923
 2007-03-05 05:45:08 +00:00
Jeff Cohen
5506bc49f9 Implement memoryLimit on Windows. 
llvm-svn: 34922
 2007-03-05 05:22:08 +00:00
Chris Lattner
4dfdbab24b fix a subtle bug that caused an MSVC warning. Thanks to Jeffc for pointing this out. 
llvm-svn: 34920
 2007-03-05 00:11:19 +00:00
Chris Lattner
4fadd9defa Add some simplifications for demanded bits, this allows instcombine to turn: 
define i64 @test(i64 %A, i32 %B) {
        %tmp12 = zext i32 %B to i64             ; <i64> [#uses=1]
        %tmp3 = shl i64 %tmp12, 32              ; <i64> [#uses=1]
        %tmp5 = add i64 %tmp3, %A               ; <i64> [#uses=1]
        %tmp6 = and i64 %tmp5, 123              ; <i64> [#uses=1]
        ret i64 %tmp6
}

into:

define i64 @test(i64 %A, i32 %B) {
        %tmp6 = and i64 %A, 123         ; <i64> [#uses=1]
        ret i64 %tmp6
}

This implements Transforms/InstCombine/add2.ll:test1

llvm-svn: 34919
 2007-03-05 00:02:29 +00:00
Jeff Cohen
98c99a3a02 Unbreak VC++ build. 
llvm-svn: 34917
 2007-03-05 00:00:42 +00:00
Chris Lattner
0036009167 simplify some code 
llvm-svn: 34914
 2007-03-04 23:16:36 +00:00
Chris Lattner
8c7d418eaf fold away addc nodes when we know there cannot be a carry-out. 
llvm-svn: 34913
 2007-03-04 20:40:38 +00:00
Chris Lattner
7021449d8b generalize 
llvm-svn: 34910
 2007-03-04 20:08:45 +00:00
Chris Lattner
06e4ea2b21 canonicalize constants to the RHS of addc/adde. If nothing uses the carry out of 
addc, turn it into add.

This allows us to compile:

long long test(long long A, unsigned B) {
  return (A + ((long long)B << 32)) & 123;
}

into:

_test:
        movl $123, %eax
        andl 4(%esp), %eax
        xorl %edx, %edx
        ret

instead of:
_test:
        xorl %edx, %edx
        movl %edx, %eax
        addl 4(%esp), %eax   ;; add of zero
        andl $123, %eax
        ret

llvm-svn: 34909
 2007-03-04 20:03:15 +00:00
Chris Lattner
bac1a46d92 eliminate some ops if they have an undef RHS 
llvm-svn: 34908
 2007-03-04 20:01:46 +00:00
Chris Lattner
241e2e2e3d fix typo 
llvm-svn: 34906
 2007-03-04 06:36:24 +00:00
Chris Lattner
6d7701714e add missing braces 
llvm-svn: 34905
 2007-03-04 06:13:52 +00:00
Chris Lattner
758a83d1b0 minor cleanups 
llvm-svn: 34904
 2007-03-04 04:50:21 +00:00
Reid Spencer
d3481fbeec Remove unneeded header file. 
llvm-svn: 34903
 2007-03-04 04:41:04 +00:00
Chris Lattner
de2b4322ff Speed up -instcombine by 20% by avoiding a particularly expensive passmgr call. 
llvm-svn: 34902
 2007-03-04 04:27:24 +00:00
Chris Lattner
f2304552f7 switch MarkAliveBlocks over to using SmallPtrSet instead of std::set, speeding 
up simplifycfg by 20%

llvm-svn: 34901
 2007-03-04 04:20:48 +00:00
Chris Lattner
dec6a90a00 Speed up Loop::isLCSSAForm by using a hash table instead of a sorted vector. 
llvm-svn: 34900
 2007-03-04 04:06:39 +00:00
Chris Lattner
4d48389d2d make better use of LCSSA information in RewriteLoopExitValues. Before, we 
would scan the entire loop body, then scan all users of instructions in the
loop, looking for users outside the loop.  Now, since we know that the
loop is in LCSSA form, we know that any users outside the loop will be LCSSA
phi nodes.  Just scan them.

This speeds up indvars significantly.

llvm-svn: 34898
 2007-03-04 03:43:23 +00:00
Reid Spencer
17000a40e2 Guard further against APInt operations with operands of unequal bit width. 
llvm-svn: 34897
 2007-03-04 01:25:35 +00:00
Chris Lattner
519ed087bb Implement PR1179/PR1232 and test/Transforms/IndVarsSimplify/loop_evaluate_[234].ll 
This makes -indvars require and use LCSSA, updating it as appropriate.

llvm-svn: 34896
 2007-03-04 01:00:28 +00:00
Chris Lattner
9c1328fdbb Fix CodeGen/Generic/fpowi-promote.ll and PR1239 
llvm-svn: 34893
 2007-03-03 23:43:21 +00:00
Chris Lattner
f45fa39069 Make RewriteLoopExitValues far less nested by using continue in the loop 
llvm-svn: 34891
 2007-03-03 22:48:48 +00:00
Chris Lattner
4275ffd6ff Add an expand action for ISD label which just deletes the label. 
This "fixes" PR1238.

llvm-svn: 34890
 2007-03-03 19:21:38 +00:00
Reid Spencer
4ab5a02fb1 Remove unnecessary #include. 
llvm-svn: 34889
 2007-03-03 18:29:16 +00:00
Reid Spencer
4610488330 Deal with error handling better. 
llvm-svn: 34887
 2007-03-03 18:19:18 +00:00
Reid Spencer
e0d00951c2 Make sure that when we store a value it is masked to its correct bit 
width. This helps CBE work with non-standard integer bit widths.

llvm-svn: 34885
 2007-03-03 16:33:33 +00:00
Reid Spencer
8aaa36a012 Complete the APIntification of the interpreter. All asserts for > 64 bits 
have been removed and dealt with. The interpreter should now be able to
execute any LLVM program using any bit width.

llvm-svn: 34884
 2007-03-03 08:38:04 +00:00
Reid Spencer
6cdbf93aae Avoid memory leakage by having caller construct the APInt for the 
destination value of LoadValueFromMemory.

llvm-svn: 34883
 2007-03-03 08:36:29 +00:00
Reid Spencer
6037b564a0 Fix constant folding of fp->int bitcast for vectors. 
llvm-svn: 34880
 2007-03-03 08:32:46 +00:00
Evan Cheng
306d12a520 Only propagate IsKill if the last use is a kill. 
llvm-svn: 34878
 2007-03-03 06:32:37 +00:00
Reid Spencer
747e872c5b Implement APInt support for the binary operators. 
Move the getConstantExpr function towards the end of the file so we don't
need a dozen forward declarations.

llvm-svn: 34877
 2007-03-03 06:22:22 +00:00
Reid Spencer
11a355139c 1. Have the ExecutionContext keep track of the APInt's allocated and 
ensure they are cleaned up when the stack frame exits.
2. Move a function to the Execution.cpp file where it belongs.

llvm-svn: 34876
 2007-03-03 06:19:55 +00:00
Nate Begeman
7ffce4cf16 http://llvm.org/bugs/show_bug.cgi?id=1237 
llvm-svn: 34875
 2007-03-03 06:18:18 +00:00
Reid Spencer
df9222b66d Implement loading and storing of APInt values from memory. 
llvm-svn: 34874
 2007-03-03 06:18:03 +00:00
Nick Lewycky
cfed5f36a1 Emit low/high immediate loads properly for Linux/PPC. 
llvm-svn: 34871
 2007-03-03 05:29:51 +00:00
Chris Lattner
f22da20af4 my recent change caused a failure in a bswap testcase, because it changed 
the order that instcombine processed instructions in the testcase.  The end
result is that instcombine finished with:

define i16 @test1(i16 %a) {
        %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
        %tmp21 = lshr i32 %tmp, 8               ; <i32> [#uses=1]
        %tmp5 = shl i32 %tmp, 8         ; <i32> [#uses=1]
        %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
        %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
        ret i16 %tmp.upgrd.3
}

which can't get matched as a bswap.

This patch makes instcombine more sophisticated about removing truncating
casts, allowing it to turn this into:

define i16 @test2(i16 %a) {
        %tmp211 = lshr i16 %a, 8
        %tmp52 = shl i16 %a, 8
        %tmp.upgrd.323 = or i16 %tmp211, %tmp52
        ret i16 %tmp.upgrd.323
}

which then matches as bswap.  This fixes bswap.ll and implements
InstCombine/cast2.ll:test[12].  This also implements cast elimination of
add/sub.

llvm-svn: 34870
 2007-03-03 05:27:34 +00:00
Nick Lewycky
a0a23a645d Translate bit operations to English. 
llvm-svn: 34868
 2007-03-03 03:14:40 +00:00
Evan Cheng
f4e93806fe Watch out for cases like this: 
entry (0x8b056f0, LLVM BB @0x8b01b30, ID#0):
Live Ins: %r0 %r1 %r2 %r3
        %reg1032 = tMOVrr %r3<kill>
        %reg1033 = tMOVri8 1
        %reg1034 = tMOVri8 0
        tCMPi8 %reg1029<kill>, 0
        tBcc mbb<entry,0x8b06a10>, 0
    Successors according to CFG: 0x8b06980 0x8b06a10

entry (0x8b06980, LLVM BB @0x8b01b30, ID#12):
    Predecessors according to CFG: 0x8b056f0
        %reg1036 = tMOVrr %reg1034<kill>
    Successors according to CFG: 0x8b06a10

entry (0x8b06a10, LLVM BB @0x8b01b30, ID#13):
    Predecessors according to CFG: 0x8b056f0 0x8b06980
        %reg1024<dead> = tMOVrr %reg1030<kill>
        ...

reg1030 and r1 have already been joined. When reg1024 and reg1030 are joined,
r1 live range from function entry to the tMOVrr instruction are dead. Eliminate
r1 from the livein set of the entry BB, not the BB where the copy is.

llvm-svn: 34866
 2007-03-03 02:18:00 +00:00
Chris Lattner
892090ea95 add a top-level iteration loop to instcombine. This means that it will never 
finish without combining something it is capable of.

llvm-svn: 34865
 2007-03-03 02:04:50 +00:00
Reid Spencer
8c49eb7da5 APIntify this pass. 
llvm-svn: 34863
 2007-03-03 00:48:31 +00:00
Reid Spencer
6f7b9afc1c Finally get this patch right :) 
Replace expensive getZExtValue() == 0 calls with isZero() calls.

llvm-svn: 34861
 2007-03-02 23:51:25 +00:00
Reid Spencer
438d17b5ad Dang, I've done that twice now! Undo previous commit. 
llvm-svn: 34860
 2007-03-02 23:37:53 +00:00
Reid Spencer
70fbfc75e8 Use more efficient test for one value in a ConstantInt. 
llvm-svn: 34859
 2007-03-02 23:35:28 +00:00
Reid Spencer
76f02c5848 Guard against huge loop trip counts in an APInt safe way. 
llvm-svn: 34858
 2007-03-02 23:31:34 +00:00
Evan Cheng
2fb461c1b5 X86-64 VACOPY needs custom expansion. va_list is a struct { i32, i32, i8*, i8* }. 
llvm-svn: 34857
 2007-03-02 23:16:35 +00:00
Reid Spencer
884f32fd12 Make sure debug code is not evaluated in non-debug case. 
llvm-svn: 34856
 2007-03-02 23:15:21 +00:00
Reid Spencer
69858df100 1. Sort switch cases using APInt safe comparison. 
2. Make sure debug output of APInt values is safe for all bit widths.

llvm-svn: 34855
 2007-03-02 23:05:28 +00:00
Reid Spencer
bf4956bcc4 Use APInt safe isOne() method on ConstantInt instead of getZExtValue()==1 
llvm-svn: 34854
 2007-03-02 23:03:17 +00:00
Reid Spencer
0f63188d6a Make sorting of ConstantInt be APInt clean through use of ult function. 
llvm-svn: 34853
 2007-03-02 23:01:14 +00:00
Reid Spencer
3e3980a403 Fix ashr for bitwidths > 64. This is now validated up to 1024 bits. 
llvm-svn: 34852
 2007-03-02 22:39:11 +00:00
Anton Korobeynikov
7cec92bcd2 Simplify things 
llvm-svn: 34849
 2007-03-02 21:50:27 +00:00
Chris Lattner
e11cd0460a Fix a significant algorithm problem with the instcombine worklist. removing 
a value from the worklist required scanning the entire worklist to remove all
entries.  We now use a combination map+vector to prevent duplicates from
happening and prevent the scan.  This speeds up instcombine on a large file
from the llvm-gcc bootstrap from 189.7s to 4.84s in a debug build and from
5.04s to 1.37s in a release build.

llvm-svn: 34848
 2007-03-02 21:28:56 +00:00
Chris Lattner
fb4d1a6437 minor cleanup 
llvm-svn: 34846
 2007-03-02 19:59:19 +00:00
Evan Cheng
9dddb88209 Mark dead def as unused. 
llvm-svn: 34844
 2007-03-02 10:43:16 +00:00
Evan Cheng
5bd925036c Dead live-in detection bug. 
llvm-svn: 34843
 2007-03-02 10:41:15 +00:00
Evan Cheng
e2802973eb - Keep track all def and uses of stack slot available in register. 
- Available value use may be deleted (e.g. noop move).

llvm-svn: 34841
 2007-03-02 08:52:00 +00:00
Evan Cheng
622db28794 Invalidate last use of a reused register if the use is a deleted noop copy. 
llvm-svn: 34839
 2007-03-02 05:41:42 +00:00
Chris Lattner
55dcf58453 argument lowering should copy from the vreg shadows of live-in arguments 
passed in registers, not directly from the pregs themselves.

llvm-svn: 34838
 2007-03-02 05:12:29 +00:00
Chris Lattner
e29ef5d9cb add a note 
llvm-svn: 34837
 2007-03-02 05:04:52 +00:00
Reid Spencer
6d483da6c0 Use a better algorithm for rounding sqrt results. Change the FIXME about 
this to a NOTE: because pari/gp results start to get rounded incorrectly
after 192 bits of precision. APInt and pari/gp never differ by more than
1, but APInt is more accurate because it does not lose precision after 192
bits as does pari/gp.

llvm-svn: 34834
 2007-03-02 04:21:55 +00:00
Nick Lewycky
29f7380f34 Implement unionWith. 
llvm-svn: 34833
 2007-03-02 03:33:05 +00:00
Chris Lattner
4fbb8286bf switch the inliner from being recursive to being iterative. 
llvm-svn: 34832
 2007-03-02 03:11:20 +00:00
Reid Spencer
89154fbfff Fix an unequal bitwidth issue. 
llvm-svn: 34831
 2007-03-02 02:59:25 +00:00
Reid Spencer
39b817765b Add a FIXME 
llvm-svn: 34828
 2007-03-02 02:01:34 +00:00
Reid Spencer
eabc981a60 Fix a problem where shifting by 64-bits leads to incorrect results on PPC 
but not on X86 becuase shift by word size is "undefined".

llvm-svn: 34825
 2007-03-02 01:19:42 +00:00
Dale Johannesen
a6003a9eb6 eliminate unnecessary reset of SP in epilog on darwin 
llvm-svn: 34824
 2007-03-02 01:17:17 +00:00
Reid Spencer
2814c17704 Reverse a premature commital. 
llvm-svn: 34822
 2007-03-02 00:31:39 +00:00
Reid Spencer
1f970769e8 Prefer non-virtual calls to ConstantInt::isZero over virtual calls to 
Constant::isNullValue() in situations where it is possible.

llvm-svn: 34821
 2007-03-02 00:28:52 +00:00
Reid Spencer
f8f8413839 Combine two lines that can be. 
llvm-svn: 34818
 2007-03-01 23:30:25 +00:00
Reid Spencer
ee77d22f26 Make it possible to create an SCEVUnknown from an APInt as well as an int. 
llvm-svn: 34816
 2007-03-01 22:28:51 +00:00
Reid Spencer
e5456dea52 Although probably not necessary, guard against a potential assertion by 
using isNullValue() instead of getZExtValue() == 0.

llvm-svn: 34815
 2007-03-01 21:54:37 +00:00
Reid Spencer
3a7689fe22 Use isUnitValue() instead of getZExtValue() == 1 which will prevent an 
assert if the ConstantInt's value is large.

llvm-svn: 34814
 2007-03-01 21:51:23 +00:00
Reid Spencer
327ae8b712 Use APInt conversion to string so the result is correct regardless of the 
bit width of the ConstantInt being converted.

llvm-svn: 34810
 2007-03-01 21:00:32 +00:00
Reid Spencer
5790924b21 Use the APInt versions of the bit-wise conversions of float/double to int 
and back. While this is not strictly necessary, it does pave the way for
future changes in casting. It should now be possible to improve vector
casting to deal with un-equal fp/int sizes.

llvm-svn: 34808
 2007-03-01 20:44:23 +00:00
Reid Spencer
5d9574f37e Use modern variable name. ConstantUnsignedInt is long since dead. No 
functional change with this patch.

llvm-svn: 34806
 2007-03-01 20:27:41 +00:00
Jim Laskey
0b6492d5df Emit eh filter info. 
llvm-svn: 34805
 2007-03-01 20:26:43 +00:00
Jim Laskey
73e3ad1b10 Collect eh filter info. 
llvm-svn: 34804
 2007-03-01 20:25:32 +00:00
Reid Spencer
d7c97384ac Use a simpler constructor for ConstantInt. 
llvm-svn: 34803
 2007-03-01 20:25:31 +00:00
Jim Laskey
5f932644e9 Lower eh filter intrinsic. 
llvm-svn: 34802
 2007-03-01 20:24:30 +00:00
Reid Spencer
381752cb34 Wrap a long line. 
llvm-svn: 34799
 2007-03-01 19:48:16 +00:00
Reid Spencer
30758bbe85 Avoid a potential assert out if the loop increment is > 64 bits. 
llvm-svn: 34798
 2007-03-01 19:45:00 +00:00
Reid Spencer
29c98b589c Regenerate. 
llvm-svn: 34797
 2007-03-01 19:41:47 +00:00
Reid Spencer
30eac3e0b1 The 64-bit constructor for ConstantInt changes from int64_t to uint64_t. 
This caused a warning for construction with -1. Avoid the warning by using
-1ULL instead.

llvm-svn: 34796
 2007-03-01 19:33:52 +00:00
Reid Spencer
288f1db60d Construct ConstantInt with simpler constructor. 
llvm-svn: 34795
 2007-03-01 19:32:33 +00:00
Reid Spencer
125af87a25 Use a simpler constructor when constructing ConstantInt. Also, replace 
verbose code to sext/trunc or zext/trunc and APInt with new methods on
that class.

llvm-svn: 34794
 2007-03-01 19:32:01 +00:00
Reid Spencer
b0a7bfa105 Use a simpler constructor when constructing ConstantInst. 
llvm-svn: 34793
 2007-03-01 19:31:12 +00:00
Reid Spencer
b4e877c488 Drop the ConstantInt(const Type&, const APInt&) constructor. It is 
redundant and more verbose than the ConstantInt(const APInt&) constructor.

llvm-svn: 34792
 2007-03-01 19:30:34 +00:00