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Author SHA1 Message Date
Chris Lattner
cc0f703f42 allow demotion to volatile values 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23472 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 19:38:43 +00:00
Chris Lattner
90b108774f Add a simple testcase for lowerinvoke 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23471 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 18:34:31 +00:00
Chris Lattner
333bd835bd Make sure to clear the CodeGenMap after each basic block is selected to avoid 
cross MBB pollution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23470 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 17:45:33 +00:00
Jim Laskey
5324fec644 Remove some redundancies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23469 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 17:32:45 +00:00
Chris Lattner
09f00b1295 Make this slightly more efficient by pushing actual type information down 
into the evaluator.  This shrinks a release build of instcombine's text
section from 216363 to 215975 bytes (on PPC).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23468 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 06:38:05 +00:00
Chris Lattner
df0ef1d0fe Split SimpleConstantVal up into its components, so each Constant subclass getsa different enum value. This allows 'classof' for these to be really simple,not needing to call getType() anymore. 
This speeds up isa/dyncast/etc for constants, and also makes them smaller.
For example, the text section of a release build of InstCombine.cpp shrinks
from 230037 bytes to 216363 bytes, a 6% reduction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23467 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 06:09:08 +00:00
Chris Lattner
225e8dd2f5 Split SimpleConstantVal up into its components, so each Constant subclass gets 
a different enum value.  This allows 'classof' for these to be really simple,
not needing to call getType() anymore.

This speeds up isa/dyncast/etc for constants, and also makes them smaller.
For example, the text section of a release build of InstCombine.cpp shrinks
from 230037 bytes to 216363 bytes, a 6% reduction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23466 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 06:08:32 +00:00
Chris Lattner
a9ec8ab32b Add support for external calls that we know how to constant fold. This implements 
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
dbe298571f add a new testcase for constant foldable calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23464 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 05:02:03 +00:00
Chris Lattner
231308c545 Fix a bug where we would evaluate stores into linkonce objects which could be 
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 
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
93a900111f Add a more difficult testcase which uses a call to a helper function to do 
the initialization


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23461 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 04:44:04 +00:00
Chris Lattner
8a7cc6e71c Refactor this code a bit, no functionality changes. 
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
5e8d2dc197 Move the post-lsr simplify cfg pass after lowereh, so it can clean up after 
eh lowering as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23459 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 00:14:41 +00:00
Chris Lattner
30e21a46f0 minor pattern shuffling 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23458 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 22:20:16 +00:00
Chris Lattner
fab3728801 memoize the assert results 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23457 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 22:10:24 +00:00
Chris Lattner
3748147aaf Emit the switch stmt cases in alphabetical order instead of pointer order, 
which is not stable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23456 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 21:59:35 +00:00
Jim Laskey
e6b90fba4a Addition of a simple two pass scheduler. This version is currently hacked up 
for testing and will require target machine info to do a proper scheduling.
The simple scheduler can be turned on using -sched=simple (defaults
to -sched=none)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23455 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 21:57:04 +00:00
Chris Lattner
6bc7e513d5 implement a fixme: only select values once, even if used multiple times. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23454 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 21:53:26 +00:00
Chris Lattner
ff0c1ef9eb Remove some dead code. ctor evaluation subsumes empty ctor elim 
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 
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
33c36f399f Testcase that uses an alloca 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23451 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 17:06:32 +00:00
Chris Lattner
aae4a1cd3f Add a debug printout, fix a crash on kc++ 
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 
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
43898ef0ae add another case, this one that uses getelementptr instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23448 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 06:51:50 +00:00
Chris Lattner
0b142e3920 Replace TraverseGEPInitializer with ConstantFoldLoadThroughGEPConstantExpr 
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
ebe61201d1 Eliminate GetGEPGlobalInitializer in favor of the more powerful 
ConstantFoldLoadThroughGEPConstantExpr function in the utils lib.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23446 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:28:52 +00:00
Chris Lattner
363f2a26d5 Factor the GetGEPGlobalInitializer out of this pass and into Transforms/Utils 
as ConstantFoldLoadThroughGEPConstantExpr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23445 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:28:06 +00:00
Chris Lattner
c5f52e6da1 Move the ConstantFoldLoadThroughGEPConstantExpr function out of the InstCombine 
pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23444 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:27:10 +00:00
Chris Lattner
c5406b55d5 add a new function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23443 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:26:32 +00:00
Chris Lattner
562a055ca7 add a comment 
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. 
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
d44b0ff038 add a test for load 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23440 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:14:48 +00:00
Chris Lattner
cdf98bed96 Add support for br/brcond/switch and phi 
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
44b19f2bcb add another testcase with simple control flow 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23438 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 04:57:10 +00:00
Chris Lattner
79c1101947 Add a simple interpreter to this code, allowing us to statically evaluate 
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
1fcfe32e51 make this harder: put some code into it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23436 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 04:43:01 +00:00
Chris Lattner
db973e60ce factor some code into a InstallGlobalCtors method, add comments. No functionality change. 
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 
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. 
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
09eec56af0 new testcase for static ctor list optimizations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23432 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 01:42:03 +00:00
Jeff Cohen
a48283baa3 Fix VC++ build errors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23431 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-25 19:04:43 +00:00
Chris Lattner
aebac50e77 Fix some logic I broke that caused a regression on 
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
5931c54e85 Move MaskedValueIsZero up. 
Match a bunch of idioms for sign extensions, implementing InstCombine/signext.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23428 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 23:43:33 +00:00
Chris Lattner
8a11da021b All of these should turn into sign extends (e.g. extsh/extsb on PPC) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23427 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 23:42:18 +00:00
Chris Lattner
a58ef7b652 Add long-overdue helpers for getting constants with known upper bits 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23426 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 22:57:28 +00:00
Chris Lattner
5d735bf29b Simplify this code a bit by relying on recursive simplification. Support 
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
397fa21f27 Enhance this to check for a crash, add a case that crashes simplifylibcalls, 
and add a case that has uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23424 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 22:16:04 +00:00
Chris Lattner
d4f43519c2 new testcase that crashes the CFE 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23423 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 20:54:33 +00:00
Chris Lattner
5fada3b218 new testcase for PR630 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23422 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 08:38:28 +00:00