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76 Commits

Author SHA1 Message Date
Chris Lattner
24aba42d04 add some other xforms that should be done as part of PR5783 
llvm-svn: 91428
 2009-12-15 09:05:13 +00:00
Chris Lattner
eea42c7b51 tidy up, remove dependence on order of evaluation of function args from EmitMemCpy. 
llvm-svn: 90297
 2009-12-02 06:05:42 +00:00
Eric Christopher
0c7bd96de2 Add more optimizations for object size checking, enable handling of 
object size intrinsic and verify return type is correct. Collect various
code in one place.

llvm-svn: 89523
 2009-11-21 01:01:30 +00:00
Daniel Dunbar
f87c75706f Revert "Add some rough optimizations for checking routines.", it buildeth not. 
llvm-svn: 89482
 2009-11-20 20:17:30 +00:00
Eric Christopher
cf97d01dff Add some rough optimizations for checking routines. 
llvm-svn: 89479
 2009-11-20 19:57:37 +00:00
Duncan Sands
e5de4a9ad6 CreateIntCast takes an "isSigned" parameter. Pass "true" for it, rather than 
a name.

llvm-svn: 88908
 2009-11-16 12:32:28 +00:00
Chris Lattner
feeabde753 fix PR5104: when printing a single character, return the result of 
putchar in case there is an error.

llvm-svn: 86515
 2009-11-09 04:57:04 +00:00
Benjamin Kramer
b971445ab7 Teach SimplifyLibCalls to fold memcmp calls with constant arguments. 
llvm-svn: 86141
 2009-11-05 17:44:22 +00:00
Eric Christopher
7a50b280c1 Add objectsize intrinsic and hook it up through codegen. Doesn't 
do anything than return "I don't know" at the moment.

llvm-svn: 85189
 2009-10-27 00:52:25 +00:00
Eric Christopher
5b741f3d14 80-column and whitespace fixes. 
llvm-svn: 83489
 2009-10-07 21:14:25 +00:00
Duncan Sands
9ed7b16bf3 Introduce and use convenience methods for getting pointer types 
where the element is of a basic builtin type.  For example, to get
an i8* use getInt8PtrTy.

llvm-svn: 83379
 2009-10-06 15:40:36 +00:00
Chris Lattner
fdd8790718 strength reduce a ton of type equality tests to check the typeid (Through 
the new predicates I added) instead of going through a context and doing a
pointer comparison.  Besides being cheaper, this allows a smart compiler
to turn the if sequence into a switch.

llvm-svn: 83297
 2009-10-05 05:54:46 +00:00
Dan Gohman
62995c71a2 Fix SimplifyLibCalls to transfer attributes from callees rather than 
calls, since direct calls don't always reflect the attributes of their
callees.

llvm-svn: 82867
 2009-09-26 18:10:13 +00:00
Dan Gohman
394468dc8e Rename ConstantFP's getInf to getInfinity. 
llvm-svn: 82823
 2009-09-25 23:40:21 +00:00
Dan Gohman
5ffd53892d Transform pow(x, 0.5) to (x == -inf ? inf : fabs(sqrt(x))), which is 
typically faster then doing a general pow.

llvm-svn: 82819
 2009-09-25 23:10:17 +00:00
Victor Hernandez
5d034499ad Enhance transform passes so that they apply the same tranforms to malloc calls as to MallocInst. 
Reviewed by Dan Gohman.

llvm-svn: 82300
 2009-09-18 22:35:49 +00:00
Chris Lattner
27266f164f In C++, code is not allowed to call main. In C it is, this 
simplifylibcalls optimization is thus valid for C++ but not C.
It's not important enough to worry about for C++ apps, so just
remove it.

rdar://7191924

llvm-svn: 80887
 2009-09-03 05:19:59 +00:00
Chris Lattner
2dd09dbdf7 eliminate VISIBILITY_HIDDEN from Transforms/Scalar. PR4861 
llvm-svn: 80766
 2009-09-02 06:11:42 +00:00
Dan Gohman
dea2358c68 Fix SimplifyLibcalls and ValueTracking to check mayBeOverridden 
before performing optimizations based on constant string values.

llvm-svn: 79384
 2009-08-19 00:11:12 +00:00
Dan Gohman
9f2b3db428 Make TargetData optional in SimplifyLibCalls. 
llvm-svn: 79298
 2009-08-18 00:48:13 +00:00
Owen Anderson
55f1c09e31 Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Owen Anderson
5a1acd9912 Move a few more APIs back to 2.5 forms. The only remaining ones left to change back are 
metadata related, which I'm waiting on to avoid conflicting with Devang.

llvm-svn: 77721
 2009-07-31 20:28:14 +00:00
Owen Anderson
4056ca9568 Move types back to the 2.5 API. 
llvm-svn: 77516
 2009-07-29 22:17:13 +00:00
Daniel Dunbar
98ddd164d8 Fix PR4645 which was fallout from the fix for PR4641. 
- Call RAUW to delete all instructions (this is a patch from Nick Lewycky).

llvm-svn: 77512
 2009-07-29 22:00:43 +00:00
Owen Anderson
487375e9a2 Move ConstantExpr to 2.5 API. 
llvm-svn: 77494
 2009-07-29 18:55:55 +00:00
Nick Lewycky
f82326b984 Bulk erasing instructions without RAUWing them is unsafe. Instead, break them 
into a new BB that has no predecessors.

llvm-svn: 77433
 2009-07-29 05:17:50 +00:00
Owen Anderson
c2c7932c64 Change ConstantArray to 2.5 API. 
llvm-svn: 77347
 2009-07-28 18:32:17 +00:00
Owen Anderson
69c464dec4 Move ConstantFP construction back to the 2.5-ish API. 
llvm-svn: 77247
 2009-07-27 20:59:43 +00:00
Daniel Dunbar
ca414c7cae Remove Value::getNameLen 
llvm-svn: 77148
 2009-07-26 08:34:35 +00:00
Daniel Dunbar
9813b0b025 Eliminate some uses of DOUT, cerr, and getNameStart(). 
llvm-svn: 77145
 2009-07-26 07:49:05 +00:00
Daniel Dunbar
e03eecb75f Remove Value::{isName, getNameRef}. 
Also, change MDString to use a StringRef.

llvm-svn: 77098
 2009-07-25 23:55:21 +00:00
Owen Anderson
edb4a70325 Revert the ConstantInt constructors back to their 2.5 forms where possible, thanks to contexts-on-types. More to come. 
llvm-svn: 77011
 2009-07-24 23:12:02 +00:00
Daniel Dunbar
5bf72e20eb Convert StringMap to using StringRef for its APIs. 
- Yay for '-'s and simplifications!

 - I kept StringMap::GetOrCreateValue for compatibility purposes, this can
   eventually go away. Likewise the StringMapEntry Create functions still follow
   the old style.

 - NIFC.

llvm-svn: 76888
 2009-07-23 18:17:34 +00:00
Owen Anderson
47db941fd3 Get rid of the Pass+Context magic. 
llvm-svn: 76702
 2009-07-22 00:24:57 +00:00
Eli Friedman
ff9bf97ceb Fix simplifylibcalls memset recognition to work on 64-bit platforms 
where int is 32 bits.

llvm-svn: 76293
 2009-07-18 08:34:51 +00:00
Owen Anderson
20b34ac794 Move the ConstantInt uniquing table into LLVMContextImpl. This exposed a number of issues in 
our current context-passing stuff, which is also fixed here

llvm-svn: 76089
 2009-07-16 18:04:31 +00:00
Owen Anderson
542619e6d5 Move more functionality over to LLVMContext. 
llvm-svn: 75497
 2009-07-13 20:58:05 +00:00
Owen Anderson
a771459bb1 Push LLVMContext _back_ through IRBuilder. 
llvm-svn: 75040
 2009-07-08 20:50:47 +00:00
Owen Anderson
b17f32945f Switch GlobalVariable ctors to a sane API, where *either* a context or a module is required. 
llvm-svn: 75025
 2009-07-08 19:03:57 +00:00
Owen Anderson
5948fdf68b Push LLVMContext through GlobalVariables and IRBuilder. 
llvm-svn: 74985
 2009-07-08 01:26:06 +00:00
Owen Anderson
340288c621 Even more passes being LLVMContext'd. 
llvm-svn: 74781
 2009-07-03 19:42:02 +00:00
Chris Lattner
87a222c5c8 part of PR4405: disable a contentious optimization for 
strcmp -> memcmp when the lengths of the strings are unknown.

Patch by Nick Lewycky!

llvm-svn: 73751
 2009-06-19 04:17:36 +00:00
Anton Korobeynikov
6ee547bb1b Revert IRBuilder CC propagation. Fix SimplifyLibCalls instead. 
llvm-svn: 73715
 2009-06-18 20:05:31 +00:00
Dan Gohman
a5b9645c4b Split the Add, Sub, and Mul instruction opcodes into separate 
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897
 2009-06-04 22:49:04 +00:00
Chris Lattner
221895303c fix PR4284, a bug in simplifylibcalls handling memcmp. Patch by 
Benjamin Kramer!

llvm-svn: 72625
 2009-05-30 18:43:04 +00:00
Chris Lattner
7e335a763a Fix PR4206 - crash in simplify lib calls 
llvm-svn: 71644
 2009-05-13 06:26:11 +00:00
Chris Lattner
6cd82fb430 "There was a typo in my previous patch which leads to miscompilation of 
strncat :(

strncat(foo, "bar", 99)
would be optimized to
memcpy(foo+strlen(foo), "bar", 100, 1)
instead of
memcpy(foo+strlen(foo), "bar", 4, 1)"

Patch by Benjamin Kramer!

llvm-svn: 68905
 2009-04-12 18:22:33 +00:00
Chris Lattner
91b6af24ac add some optimizations for strncpy/strncat and factor some 
code.  Patch by Benjamin Kramer!

llvm-svn: 68885
 2009-04-12 05:06:39 +00:00
Ed Schouten
01aa6ec97a Let the strcat optimizer return the pointer to the start of the buffer, 
instead of the place where it started to perform the string copy.

- PR3661
- Patch by Benjamin Kramer!

llvm-svn: 68443
 2009-04-06 13:06:48 +00:00
Bill Wendling
fa54bc2052 Oops...I committed too much. 
llvm-svn: 66867
 2009-03-13 04:39:26 +00:00