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3100 Commits

Author SHA1 Message Date
Chris Lattner
92a6865321 Generalize MaskedValueIsZero into a ComputeMaskedNonZeroBits function, which 
is just as efficient as MVIZ and is also more general.

Fix a few minor bugs introduced in recent patches

llvm-svn: 26036
 2006-02-07 08:05:22 +00:00
Chris Lattner
c3ebf40031 Make MaskedValueIsZero take a uint64_t instead of a ConstantIntegral as a 
mask.  This allows the code to be simpler and more efficient.

Also, generalize some of the cases in MVIZ a bit, making it slightly more aggressive.

llvm-svn: 26035
 2006-02-07 07:27:52 +00:00
Chris Lattner
77defbae0a Use Type::getIntegralTypeMask() to simplify some code 
llvm-svn: 26034
 2006-02-07 07:00:41 +00:00
Chris Lattner
2590e511d8 Implement the beginnings of a facility for simplifying expressions based on 
'demanded bits', inspired by Nate's work in the dag combiner.  This isn't
complete, but needs to unrelated instcombiner changes to continue.

llvm-svn: 26033
 2006-02-07 06:56:34 +00:00
Chris Lattner
2e90b732fa Turn A % (C << N), where C is 2^k, into A & ((C << N)-1) [urem only]. 
Turn A / (C1 << N), where C1 is "1<<C2" into A >> (N+C2) [udiv only].

Tested with: rem.ll:test5, div.ll:test10

llvm-svn: 26003
 2006-02-05 07:54:04 +00:00
Chris Lattner
d30c4991a1 Use SCEVExpander::InsertCastOfTo instead of our own code. This reduces 
#LLVM LOC, and auto-cse's cast instructions.

llvm-svn: 25974
 2006-02-04 09:52:43 +00:00
Chris Lattner
2959f0003e Fix two significant bugs in LSR: 
1. When rewriting code in outer loops, sometimes we would insert code into
   inner loops that is invariant in that loop.
2. Notice that 4*(2+x) is 8+4*x and use that to simplify expressions.

This is a performance neutral change.

llvm-svn: 25964
 2006-02-04 07:36:50 +00:00
Jeff Cohen
15a8c15a1f Improve compatibility with VC2005, patch by Morten Ofstad! 
llvm-svn: 25661
 2006-01-26 20:41:32 +00:00
Chris Lattner
120f31b1fd teach the cloner to handle inline asms 
llvm-svn: 25633
 2006-01-26 01:55:22 +00:00
Chris Lattner
c0f633a598 Fix Regression/Transforms/ScalarRepl/2006-01-24-IllegalUnionPromoteCrash.ll 
llvm-svn: 25587
 2006-01-24 19:36:27 +00:00
Chris Lattner
00fcdfef0d rename method 
llvm-svn: 25572
 2006-01-24 04:16:34 +00:00
Chris Lattner
37992b34c2 When cloning a module, clone the inline asm. 
llvm-svn: 25559
 2006-01-23 23:06:28 +00:00
Chris Lattner
5774040c09 add a bunch more optimizations for unary double math functions 
llvm-svn: 25530
 2006-01-23 06:24:46 +00:00
Chris Lattner
57a2863cbb Refactor/genericize this, no functionality change 
llvm-svn: 25525
 2006-01-23 05:57:36 +00:00
Chris Lattner
c597b8a55e Make iostream #inclusion explicit 
llvm-svn: 25514
 2006-01-22 23:32:06 +00:00
Chris Lattner
33081b4648 Make this more efficient in the following ways: 
1. Do not statically construct a map when the program starts up, this
   is expensive and cannot be optimized.  Instead, create a list.
2. Do not insert entries for all function in the module into a hashmap
   that lives the full life of the compiler.

llvm-svn: 25512
 2006-01-22 23:10:26 +00:00
Chris Lattner
469640e506 Add explicit #includes of <iostream> 
llvm-svn: 25509
 2006-01-22 22:53:01 +00:00
Chris Lattner
0d4ebfc15b Several non-functionality changing changes: 
1. Use the varargs version of getOrInsertFunction to simplify code.
2. remove #include
3. Reduce the number of #ifdef's.
4. remove extraneous vertical whitespace.

llvm-svn: 25508
 2006-01-22 22:35:08 +00:00
Robert Bocchino
027c18da98 ConstantFoldLoadThroughGEPConstantExpr wasn't handling pointers to 
packed types correctly.

llvm-svn: 25470
 2006-01-19 23:53:23 +00:00
Reid Spencer
ade182125f For PR696: 
Don't do floor->floorf conversion if floorf is not available. This checks
the compiler's host, not its target, which is incorrect for cross-compilers
Not sure that's important as we don't build many cross-compilers.

llvm-svn: 25456
 2006-01-19 08:36:56 +00:00
Chris Lattner
e154abf9b3 Implement casts.ll:test26: a cast from float -> double -> integer, doesn't 
need the float->double part.

llvm-svn: 25452
 2006-01-19 07:40:22 +00:00
Chris Lattner
7be2203c9f If not internalizing, don't mark llvm.global[cd]tors const, as a fix for a 
hypothetical future boog.

llvm-svn: 25430
 2006-01-19 00:46:54 +00:00
Chris Lattner
d693b7943a Don't internalize llvm.global[cd]tor unless there are uses of it. This 
unbreaks front-ends that don't use __main (like the new CFE).

llvm-svn: 25429
 2006-01-19 00:40:39 +00:00
Chris Lattner
b98282d2d6 Make sure that cloning a module clones its target triple and dependent 
library list as well.  This should help bugpoint.

llvm-svn: 25424
 2006-01-18 21:32:45 +00:00
Robert Bocchino
e6336a9b69 Constant folding support for the insertelement operation. 
llvm-svn: 25407
 2006-01-17 20:07:07 +00:00
Robert Bocchino
6dce25019d Lowerpacked and SCCP support for the insertelement operation. 
llvm-svn: 25406
 2006-01-17 20:06:55 +00:00
Chris Lattner
801f47512d Clean up the FFS optimization code, and make it correctly create the appropriate 
unsigned llvm.cttz.* intrinsic, fixing the 2005-05-11-Popcount-ffs-fls regression
last night.

llvm-svn: 25398
 2006-01-17 18:27:17 +00:00
Reid Spencer
b4f9a6f110 For PR411: 
This patch is an incremental step towards supporting a flat symbol table.
It de-overloads the intrinsic functions by providing type-specific intrinsics
and arranging for automatically upgrading from the old overloaded name to
the new non-overloaded name. Specifically:
  llvm.isunordered -> llvm.isunordered.f32, llvm.isunordered.f64
  llvm.sqrt -> llvm.sqrt.f32, llvm.sqrt.f64
  llvm.ctpop -> llvm.ctpop.i8, llvm.ctpop.i16, llvm.ctpop.i32, llvm.ctpop.i64
  llvm.ctlz -> llvm.ctlz.i8, llvm.ctlz.i16, llvm.ctlz.i32, llvm.ctlz.i64
  llvm.cttz -> llvm.cttz.i8, llvm.cttz.i16, llvm.cttz.i32, llvm.cttz.i64
New code should not use the overloaded intrinsic names. Warnings will be
emitted if they are used.

llvm-svn: 25366
 2006-01-16 21:12:35 +00:00
Chris Lattner
307b7ea15f fix a crash due to missing parens 
llvm-svn: 25363
 2006-01-16 19:47:21 +00:00
Chris Lattner
0de2c7d3d8 This pass has never worked correctly. Remove. 
llvm-svn: 25349
 2006-01-16 01:06:00 +00:00
Chris Lattner
f6d6823f09 Let the inliner update the callgraph to reflect the changes it makes, instead 
of doing it ourselves.  This fixes Transforms/Inline/2006-01-14-CallGraphUpdate.ll

llvm-svn: 25321
 2006-01-14 20:09:18 +00:00
Chris Lattner
0841fb1d4c Teach the inliner to update the CallGraph itself, and have it add edges to 
llvm.stacksave/restore when it inserts calls to them.

llvm-svn: 25320
 2006-01-14 20:07:50 +00:00
Chris Lattner
ef530c24c1 FunctionPass's cannot do IPO things. 
llvm-svn: 25315
 2006-01-14 19:30:35 +00:00
Nate Begeman
82049eba2c Add bswap intrinsics as documented in the Language Reference 
llvm-svn: 25309
 2006-01-14 01:25:24 +00:00
Robert Bocchino
a83529678e Added instcombine support for extractelement. 
llvm-svn: 25299
 2006-01-13 22:48:06 +00:00
Chris Lattner
5fba6e6696 it is ok to dce stacksave. 
llvm-svn: 25295
 2006-01-13 21:31:54 +00:00
Chris Lattner
503221f5c5 Do a simple instcombine xforms to delete llvm.stackrestore cases. 
llvm-svn: 25294
 2006-01-13 21:28:09 +00:00
Chris Lattner
c66b223b28 Simplify this a tiny bit by using the new IntrinsicInst functionality. 
llvm-svn: 25292
 2006-01-13 20:11:04 +00:00
Chris Lattner
45406c0c53 Permit inlining functions that contain dynamic allocations now that 
InlineFunction handles this case safely.  This implements
Transforms/Inline/dynamic_alloca_test.ll.

llvm-svn: 25288
 2006-01-13 19:35:43 +00:00
Chris Lattner
2be0607a8d If inlining a call to a function that contains dynamic allocas, wrap the 
resultant code with llvm.stacksave/llvm.stackrestore intrinsics.

llvm-svn: 25286
 2006-01-13 19:34:14 +00:00
Chris Lattner
e24f79a032 Use ClonedCodeInfo to avoid another walk over the inlined code, this this 
time in common C cases.

llvm-svn: 25285
 2006-01-13 19:18:11 +00:00
Chris Lattner
19e6a08d78 Use the ClonedCodeInfo object to avoid scans of the inlined code when 
it doesn't contain any calls.  This is a fairly common case for C++ code,
so it will probably speed up the inliner marginally in these cases.

llvm-svn: 25284
 2006-01-13 19:15:15 +00:00
Chris Lattner
908d79556d Refactor a bunch of invoke handling stuff out into a new function 
"HandleInlinedInvoke".  No functionality change.

llvm-svn: 25283
 2006-01-13 19:05:59 +00:00
Chris Lattner
edad1288fd Allow the code cloning interfaces to capture some important info about the 
code being cloned if the client wants.

llvm-svn: 25281
 2006-01-13 18:39:17 +00:00
Chris Lattner
257492c0ab Fix a bug I noticed by inspection: if the first instruction in the inlined 
function was not an alloca, we wouldn't check the entry block for any allocas,
leading to increased stack space in some cases.  In practice, allocas are almost
always at the top of the block, so this was never noticed.

llvm-svn: 25280
 2006-01-13 18:16:48 +00:00
Chris Lattner
49c4d536bd Fix 80 column violations 
llvm-svn: 25279
 2006-01-13 18:06:56 +00:00
Chris Lattner
0770d8e326 Preserve and update ETForest. Patch by Daniel Berlin 
llvm-svn: 25203
 2006-01-11 05:11:13 +00:00
Chris Lattner
cb36710ff9 Switch these to using ETForest instead of DominatorSet to compute itself. 
Patch written by Daniel Berlin!

llvm-svn: 25202
 2006-01-11 05:10:20 +00:00
Chris Lattner
48e4a2ebd8 Switch this to using ETForest instead of DominatorSet to compute itself. 
Patch written by Daniel Berlin!

llvm-svn: 25201
 2006-01-11 05:09:40 +00:00
Robert Bocchino
230044839d Added support for the extractelement operation. 
llvm-svn: 25181
 2006-01-10 19:05:34 +00:00