Jeff Cohen
66c5fd6c53
When a function takes a variable number of pointer arguments, with a zero
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pointer marking the end of the list, the zero *must* be cast to the pointer
type. An un-cast zero is a 32-bit int, and at least on x86_64, gcc will
not extend the zero to 64 bits, thus allowing the upper 32 bits to be
random junk.
The new END_WITH_NULL macro may be used to annotate a such a function
so that GCC (version 4 or newer) will detect the use of un-casted zero
at compile time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23888 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-23 04:37:20 +00:00
Chris Lattner
a27ea769eb
Add an option to this pass. If it is set, we are allowed to internalize
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all but main. If it's not set, we can still internalize, but only if an
explicit symbol list is provided.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23783 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-18 06:29:22 +00:00
Chris Lattner
a48bc53cad
Fold isascii into a simple comparison. This speeds up 197.parser by 7.4%,
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bringing the LLC time down to the CBE time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23521 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-29 06:17:27 +00:00
Chris Lattner
e9b6242780
remove a bunch of unneeded stuff, or self evident comments
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23519 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-29 06:16:11 +00:00
Chris Lattner
c330069e20
Implement a couple of memcmp folds from the todo list
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23517 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-29 04:54:20 +00:00
Chris Lattner
9a5582f251
Fix a regression in my previous patch, fixing GlobalOpt/2005-09-27-Crash.ll
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and PR632.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23484 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 22:28:11 +00:00
Chris Lattner
a9ec8ab32b
Add support for external calls that we know how to constant fold. This implements
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ctor-list-opt.ll:CTOR8
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23465 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 05:02:43 +00:00
Chris Lattner
231308c545
Fix a bug where we would evaluate stores into linkonce objects which could be
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potentially replaced at link-time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23463 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 04:50:03 +00:00
Chris Lattner
cd27142cc8
Implement support for static constructors with calls in them. This is useful
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because gccas runs globalopt before inlining.
This implements ctor-list-opt.ll:CTOR7
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23462 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 04:45:34 +00:00
Chris Lattner
8a7cc6e71c
Refactor this code a bit, no functionality changes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23460 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 04:27:01 +00:00
Chris Lattner
ff0c1ef9eb
Remove some dead code. ctor evaluation subsumes empty ctor elim
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23453 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 20:38:20 +00:00
Chris Lattner
a22fdb0a37
Add support for alloca, implementing ctor-list-opt.ll:CTOR6
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23452 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 17:07:09 +00:00
Chris Lattner
aae4a1cd3f
Add a debug printout, fix a crash on kc++
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23450 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 07:34:35 +00:00
Chris Lattner
798b4d5bb3
Implement loads/stores through GEP's of globals. This implements
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ctor-list-opt.ll:CTOR5.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23449 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 06:52:44 +00:00
Chris Lattner
0b142e3920
Replace TraverseGEPInitializer with ConstantFoldLoadThroughGEPConstantExpr
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23447 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 05:34:07 +00:00
Chris Lattner
562a055ca7
add a comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23442 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 05:16:34 +00:00
Chris Lattner
04de1cfb2b
Add support for getelementptr, load, and correctly reject volatile stores.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23441 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 05:15:37 +00:00
Chris Lattner
cdf98bed96
Add support for br/brcond/switch and phi
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23439 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 04:57:38 +00:00
Chris Lattner
79c1101947
Add a simple interpreter to this code, allowing us to statically evaluate
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global ctors that are simple enough. This implements ctor-list-opt.ll:CTOR2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23437 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 04:44:35 +00:00
Chris Lattner
db973e60ce
factor some code into a InstallGlobalCtors method, add comments. No functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23435 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 02:31:18 +00:00
Chris Lattner
7d8e58f384
Make the global opt optimizer work on modules with a null terminator, by
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accepting the null even with a non-65535 init prio
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23434 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 02:19:27 +00:00
Chris Lattner
b1ab458047
Factor this code out into a few methods.
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Implement the start of global ctor optimization. It is currently smart
enough to remove the global ctor for cases like this:
struct foo {
foo() {}
} x;
... saving a bit of startup time for the program.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23433 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 01:43:45 +00:00
Chris Lattner
aebac50e77
Fix some logic I broke that caused a regression on
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SimplifyLibCalls/2005-05-20-sprintf-crash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23430 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-25 07:06:48 +00:00
Chris Lattner
5d735bf29b
Simplify this code a bit by relying on recursive simplification. Support
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sprintf("%s", P)'s that have uses.
s/hasNUses(0)/use_empty()/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-24 22:17:06 +00:00
Chris Lattner
53249865ec
Transform floor((double)FLT) -> (double)floorf(FLT), implementing
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Regression/Transforms/SimplifyLibCalls/floor.ll. This triggers 19 times in
177.mesa.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23017 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-24 17:22:17 +00:00
Chris Lattner
bbf728edeb
All stats are "Number of ..."
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22694 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 20:02:04 +00:00
Chris Lattner
9cc5f42feb
ConstantInt::get only works for arguments < 128.
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SimplifyLibCalls probably has to be audited to make sure it does not make
this mistake elsewhere. Also, if this code knows that the type will be
unsigned, obviously one arm of this is dead.
Reid, can you take a look into this further?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22566 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-01 16:52:50 +00:00
Jeff Cohen
00b16889ab
Eliminate all remaining tabs and trailing spaces.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27 06:12:32 +00:00
John Criswell
46b8db2ec6
Doh! Forgot to LLVMify the style.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22312 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29 15:57:50 +00:00
John Criswell
1d231ec0b0
Basic fix for PR#591; don't convert an fprintf() to an fwrite() if there
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is a mismatch in their character type pointers (i.e. fprintf() prints an
array of ubytes while fwrite() takes an array of sbytes).
We can probably do better than this (such as casting the ubyte to an
sbyte).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22310 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29 15:03:18 +00:00
Chris Lattner
543a02704e
add a debug type
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22277 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-24 16:00:46 +00:00
Reid Spencer
134d2e4af8
Fix a problem with the strcmp optimization checking the wrong string and
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not casting to the correct type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22250 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18 17:46:28 +00:00
Chris Lattner
d286b245be
Fix PR575, patch provided by John Mellor-Crummey. Thanks!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22223 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-15 22:49:30 +00:00
Chris Lattner
553ca52623
Do not promote globals only used by main to locals if there are constantexprs
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or other uses hanging off of them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22219 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-15 21:11:48 +00:00
Chris Lattner
5633cd13e2
Fix a problem on 64-bit targets where we passed (int)0 through ... instead of
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(void*)0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22205 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-09 02:59:00 +00:00
Reid Spencer
89026028d1
Make the registration hash_map static. No other module needs it. Also,
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document what its for a little better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22164 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21 01:27:04 +00:00
Reid Spencer
0660f754df
Adjust the file comment to read a little easier.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22163 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21 00:57:44 +00:00
Reid Spencer
b82baf04ec
Make sure ... arguments are casted to sbyte* where needed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22162 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21 00:39:30 +00:00
Reid Spencer
5845623148
Add a "brief" comment for CastToCStr
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22161 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-21 00:23:23 +00:00
Chris Lattner
9375135999
Fix mismatched type problem that crashed on cases like this:
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sprintf(P, "%s", X);
Where X is not an sbyte*. This fixes the bug JohnMC reported on llvm-bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22159 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-20 22:22:25 +00:00
Chris Lattner
49fbff4568
teach the inliner about coldcc and noreturn functions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22113 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-18 04:30:33 +00:00
Reid Spencer
c3f6abdd85
Don't look for __builtin_ffs, we'll never see it from llvm-gcc and there's
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not reason to include it for other front ends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22070 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-15 21:27:34 +00:00
Reid Spencer
f74eb3fa2a
Provide this optimization as well:
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ffs(x) -> (x == 0 ? 0 : 1+llvm.cttz(x))
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22068 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-15 21:19:45 +00:00
Reid Spencer
c64e3e77f9
Duh .. you actually have to #include Config/config.h before you can test
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for one of the values that it defines!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22058 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-15 17:20:47 +00:00
Reid Spencer
c29b13d648
Changes for ffs lib call simplification:
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* Check for availability of ffsll call in configure script
* Support ffs, ffsl, and ffsll conversion to constant value if the argument
is constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22027 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 16:42:52 +00:00
Chris Lattner
f201dbc1a4
Preserve calling conventions when doing IPO
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21798 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 01:05:50 +00:00
Chris Lattner
fb217adf92
Convert non-address taken functions with C calling conventions to fastcc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21791 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-08 22:18:06 +00:00
Reid Spencer
789082af03
* Add two strlen optimizations:
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strlen(x) != 0 -> *x != 0
strlen(x) == 0 -> *x == 0
* Change nested statistics to use style of other LLVM statistics so that
only the name of the optimization (simplify-libcalls) is used as the
statistic name, and the description indicates which specific all is
optimized. Cuts down on some redundancy and saves a few bytes of space.
* Make note of stpcpy optimization that could be done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21766 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-07 20:15:59 +00:00
Reid Spencer
673c1a9170
Don't increment the counter unless the debug flag is set.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21762 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-07 04:59:45 +00:00
Chris Lattner
1430ef134d
preserve the tail marker
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21734 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-06 06:46:58 +00:00