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5087 Commits

Author SHA1 Message Date
Dale Johannesen
7579673822 Don't consider debug intrinsics when checking 
whether a callee to be inlined is a leaf.

llvm-svn: 66588
 2009-03-10 22:20:02 +00:00
Dale Johannesen
f650b9b7da Removing a dead debug intrinsic shouldn't trigger 
another instcombine pass if we weren't going to make
one without debug info.

llvm-svn: 66576
 2009-03-10 21:19:49 +00:00
Devang Patel
eedb8ab91a Ignore dbg info, while estimating size of jump through block. 
llvm-svn: 66554
 2009-03-10 18:00:05 +00:00
John Criswell
d1fd7b1f72 Do not attempt to do parial redundancy elimination on void values. 
Also fixed a punctuation error in the header comment.
This fixes PR3775.

llvm-svn: 66542
 2009-03-10 15:04:53 +00:00
Evan Cheng
c147115cdf If a function is marked alwaysinline, it must be inlined (possibly for correctness). Do so even if the callee has dynamic alloca and the caller doesn't. 
llvm-svn: 66539
 2009-03-10 07:57:50 +00:00
Devang Patel
54b17d998a Ignore debug info while evaluating function. 
llvm-svn: 66490
 2009-03-09 23:04:12 +00:00
Dan Gohman
d22d16e519 Don't record the increment instruction; just recompute it from the Phi 
if needed. This simplifies the code a little, and is needed for an
upcoming refactoring.

llvm-svn: 66479
 2009-03-09 22:04:01 +00:00
Devang Patel
b01d0497e4 Remove llvm.dbg.global_variables also. 
llvm-svn: 66471
 2009-03-09 21:32:28 +00:00
Dan Gohman
cdabf073b9 Fix a few more places where induction variable types were used 
where memory access types are needed.

llvm-svn: 66470
 2009-03-09 21:22:12 +00:00
Dan Gohman
b65c69ed4b Use ReplacedTy instead of recomputing the same value. 
llvm-svn: 66469
 2009-03-09 21:19:58 +00:00
Dan Gohman
108b5dd79c Use LoopInfo's getLoopLatch() instead of doing what it does manualy. 
llvm-svn: 66467
 2009-03-09 21:14:16 +00:00
Dan Gohman
5a3a1117e7 Don't use an induction variable type as a memory access type. 
Use VoidTy instead, to be properly conservative.

llvm-svn: 66463
 2009-03-09 21:04:19 +00:00
Dan Gohman
2827ecebbe Factor out the code that determines the memory access type 
of an instruction into a helper function.

llvm-svn: 66460
 2009-03-09 21:01:17 +00:00
Devang Patel
f0b46d438a Add helper pass to remove llvm.dbg.declare intrinsics. 
llvm-svn: 66454
 2009-03-09 20:49:37 +00:00
Dan Gohman
c0b702199e Move the sorting of the StrideOrder array earlier so that it doesn't 
have to be done twice.

llvm-svn: 66449
 2009-03-09 20:46:50 +00:00
Dan Gohman
37c7177303 Delete the isOnlyStride argument, which is unused. 
llvm-svn: 66446
 2009-03-09 20:41:15 +00:00
Dan Gohman
ddec04d564 Tidy some LSR debug output: announce the loop it's about to process 
before it does any processing.

llvm-svn: 66443
 2009-03-09 20:34:59 +00:00
Duncan Sands
b185e63225 This debug info special case should no longer 
be needed now that these intrinsics are marked
as not accessing memory.

llvm-svn: 66420
 2009-03-09 11:57:08 +00:00
Chris Lattner
d5dd4590b5 reimplement AliasSetTracker in terms of DenseMap instead of hash_map, 
hopefully no functionality change.

llvm-svn: 66398
 2009-03-09 05:11:09 +00:00
Nick Lewycky
55ff36a552 Keep calling-convention and tail-call bit when creating new invoke or call. 
llvm-svn: 66384
 2009-03-08 19:02:17 +00:00
Nick Lewycky
5355d525f8 Fix comments, pointed out by Duncan Sands. 
llvm-svn: 66381
 2009-03-08 17:08:09 +00:00
Nick Lewycky
365f21b20f Mark function returns as noalias. 
llvm-svn: 66369
 2009-03-08 06:20:47 +00:00
Chris Lattner
f05ebf0849 teach SROA to handle promoting vector allocas with a memset into them into 
a vector type instead of into an integer type.

llvm-svn: 66368
 2009-03-08 04:17:04 +00:00
Chris Lattner
54d2292fe5 Enhance SROA to "promote to scalar" allocas which are 
memcpy/memmove'd into or out of.  This fixes a serious
perf issue that Nate ran into.

llvm-svn: 66366
 2009-03-08 04:04:21 +00:00
Chris Lattner
e367477979 change the MemIntrinsic get/setAlignment method to take an unsigned 
instead of a Constant*, which is what the clients of it really want.

llvm-svn: 66364
 2009-03-08 03:59:00 +00:00
Chris Lattner
7ddad92288 use MemTransferInst. 
llvm-svn: 66362
 2009-03-08 03:37:35 +00:00
Chris Lattner
f827ae4fa5 Introduce a new MemTransferInst pseudo class, which is a common 
parent between MemCpyInst and MemMoveInst, simplify some code to
use it.

llvm-svn: 66361
 2009-03-08 03:37:16 +00:00
Chris Lattner
fc43115972 fix a serious pessimization that Tron on IRC pointed out where we would 
"boolify" pointers, generating really awful code because getting the pointer
value requires a load itself.  Before:

_foo:
	movb	$1, _X.b
	ret
_get:
	xorl	%ecx, %ecx
	movb	_X.b, %al
	testb	%al, %al
	movl	$_Y, %eax
	cmove	%ecx, %eax
	ret

With the xform disabled:

_foo:
	movl	$_Y, _X
	ret
_get:
	movl	_X, %eax
	ret

llvm-svn: 66351
 2009-03-07 23:32:02 +00:00
Duncan Sands
5ab54d488f Introduce new linkage types linkonce_odr, weak_odr, common_odr 
and extern_weak_odr.  These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global.  In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time.   This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function.  If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body.  The
code generators on the other hand map weak and weak_odr linkage
to the same thing.

llvm-svn: 66339
 2009-03-07 15:45:40 +00:00
Dale Johannesen
0643e4e36c Fix another case where debug info interferes with 
an optimization.

llvm-svn: 66288
 2009-03-06 21:08:33 +00:00
Chris Lattner
c5dba8954e add a bunch more passes to the C bindings (PR3734), patch by 
Lennart Augustsson!

llvm-svn: 66272
 2009-03-06 16:52:18 +00:00
Duncan Sands
26567dea82 While thinking about the one-definition-rule and trying 
to find a tiny mouse hole to squeeze through, it struck
me that globals without a name can be considered internal
since they can't be referenced from outside the current
module.  This patch makes GlobalOpt give them internal
linkage.  Also done for aliases even though they always
have names, since in my opinion anonymous aliases should
be allowed for consistency with global variables and
functions.  So if that happens one day, this code is ready!

llvm-svn: 66267
 2009-03-06 10:21:56 +00:00
Devang Patel
12e9aa7629 While converting an aggregate to scalare, ignore and remove aggregate's debug info. 
llvm-svn: 66262
 2009-03-06 07:03:54 +00:00
Devang Patel
3ae9d5d375 While hoisting instruction to speculatively execute simple bb, ignore dbg intrinsics. 
llvm-svn: 66255
 2009-03-06 06:00:17 +00:00
Chris Lattner
a66675581a this wasn't intended to go in. 
llvm-svn: 66252
 2009-03-06 05:42:30 +00:00
Chris Lattner
1b05680d5f Change various llvm utilities to use PrettyStackTraceProgram in 
their main routines.  This makes the tools print their argc/argv
commands if they crash.

llvm-svn: 66248
 2009-03-06 05:34:10 +00:00
Devang Patel
ff51ec061c Do not count DbgInfoIntrinsic while estimating loop header size. 
llvm-svn: 66245
 2009-03-06 03:51:30 +00:00
Devang Patel
9abfbc2e14 Skip DbgInfoIntrinsic. 
llvm-svn: 66244
 2009-03-06 02:59:27 +00:00
Dale Johannesen
e07f7b0e3d Don't assign rank numbers to debug intrinsic "calls". 
This is needed so debug info doesn't change codegen.

llvm-svn: 66235
 2009-03-06 01:41:59 +00:00
Devang Patel
c751e83e2b Revert 66224. 
llvm-svn: 66233
 2009-03-06 01:39:36 +00:00
Devang Patel
205f80b2f3 Revert rev. 66167. 
We are still not out of woods yet.

llvm-svn: 66232
 2009-03-06 01:37:41 +00:00
Evan Cheng
918955bbc4 SRThreshold is meant to be inclusive. 
llvm-svn: 66227
 2009-03-06 00:56:43 +00:00
Dale Johannesen
83c13c2ace Tweak the check for promotable alloca's to handle 
debug intrinsics correctly.

llvm-svn: 66225
 2009-03-06 00:42:50 +00:00
Devang Patel
f815005dfb Do not let debug info prevert globalopt from shriking a global vars to boolean. 
llvm-svn: 66224
 2009-03-06 00:21:00 +00:00
Devang Patel
28a28a2588 Add "check/remove dbg var" helper routines. 
llvm-svn: 66223
 2009-03-06 00:19:37 +00:00
Devang Patel
34889f5bed GlobalOpt only process non constant local GVs while optimizing global vars. 
If non constant local GV named A is used by a constant local GV named B (e.g. llvm.dbg.variable) and B is not used by anyone else then eliminate A as well as B.

In other words, debug info should not interfere in removal of unused GV.
--This life, and those below, will be ignored--

M    test/Transforms/GlobalOpt/2009-03-03-dbg.ll
M    lib/Transforms/IPO/GlobalOpt.cpp

llvm-svn: 66167
 2009-03-05 18:12:02 +00:00
Evan Cheng
24c138a1cd Do not split edges to EH landing pads. It will cause code size explosion. 
llvm-svn: 66140
 2009-03-05 06:31:26 +00:00
Dale Johannesen
a73a4ee680 Fix another case where debug info was affecting 
codegen.  I convinced myself it was OK to skip all
pointer bitcasts here too.

llvm-svn: 66122
 2009-03-05 02:06:48 +00:00
Bill Wendling
edc936acb4 Add comment to emphasize that the while body is empty. 
llvm-svn: 66115
 2009-03-05 01:08:35 +00:00
Dale Johannesen
428972ecad Fix another case where a dbg.declare meant something 
had 2 uses instead of 1.

llvm-svn: 66112
 2009-03-05 00:39:02 +00:00