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79 Commits

Author SHA1 Message Date
Chris Lattner bb40a9fa58 Use autogenerated mod/ref info for intrinsics. 
llvm-svn: 26670
 2006-03-09 22:31:29 +00:00
Chris Lattner 3e19c23765 Fix a crash compiling Obsequi 
llvm-svn: 26529
 2006-03-04 21:48:01 +00:00
Chris Lattner 071faf25e0 Be more conservative with our symbolic alias analysis. In particular, 
don't assume that A[1][0] and A[0][i] can't alias.  "i" might be out of
range, or even negative.  This fixes a miscompilation of 188.ammp (which
does bad pointer tricks) with the new CFE.

Testcase here: Analysis/BasicAA/2006-03-03-BadArraySubscript.ll

llvm-svn: 26515
 2006-03-04 02:06:34 +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
Andrew Lenharth 5278ca3fa2 prevent cse of readcyclecounter 
llvm-svn: 24303
 2005-11-11 19:02:54 +00:00
Andrew Lenharth 01aa56397d continued readcyclecounter support 
llvm-svn: 24300
 2005-11-11 16:47:30 +00:00
Chris Lattner 898e50ecb3 floor/ceil don't read/write memory. This allows gcse to eliminate 6 calls 
in mesa.

llvm-svn: 23015
 2005-08-24 16:58:56 +00:00
Andrew Lenharth 23167c3be9 Remove glibc specific functions, and mark a couple as C99 
llvm-svn: 22384
 2005-07-11 20:35:20 +00:00
Andrew Lenharth c51a74cc02 because on alpha: 
#   define errno (*__errno_location ())

*shakes head

llvm-svn: 22383
 2005-07-11 17:41:12 +00:00
Chris Lattner bb0bfc4702 By definition, 'tail' calls cannot access the stack frame of their caller. 
Expose this as a simple form of mod/ref information.  This implements
BasicAA/tailcall-modref.ll

llvm-svn: 21796
 2005-05-08 23:58:12 +00:00
Chris Lattner b2d3ac8349 These intrinsics do not access memory 
llvm-svn: 21718
 2005-05-06 05:21:04 +00:00
Chris Lattner 1c636f1118 Add llvm.sqrt intrinsic, patch contributed by Morten Ofstad 
llvm-svn: 21627
 2005-04-30 03:44:07 +00:00
Chris Lattner 59ecb57e4a These functions can set errno! 
llvm-svn: 21609
 2005-04-28 21:52:31 +00:00
Misha Brukman 01808caded Remove trailing whitespace 
llvm-svn: 21416
 2005-04-21 21:13:18 +00:00
Chris Lattner 562c180879 Fix Regression/Analysis/BasicAA/2005-03-09-BrokenBasicAA.ll, a miscompilation 
that Alkis found with Java, thanks Alkis!

llvm-svn: 20531
 2005-03-09 16:29:52 +00:00
Jeff Cohen cede1ce95a Add even more missing createXxxPass functions. 
llvm-svn: 19402
 2005-01-08 22:01:16 +00:00
Chris Lattner 869d6a40a9 Fix a bug in -no-aa that caused two DSGraph tests to XPASS. 
llvm-svn: 18962
 2004-12-15 17:13:24 +00:00
Chris Lattner 71d04bce55 Adjust to new alias analysis interfaces 
llvm-svn: 18957
 2004-12-15 07:22:13 +00:00
Alkis Evlogimenos 346ee4c9fb Add testcase and fix for yet another case where we query the size an 
abstract type.

llvm-svn: 18678
 2004-12-08 23:56:15 +00:00
Alkis Evlogimenos b1ff6d7921 Add testcase and fix for another case where we query the size an 
abstract type.

llvm-svn: 18676
 2004-12-08 23:42:11 +00:00
Reid Spencer 5c132bc3af For PR387:\ 
Add getModRefInfo method to avoid overloaded virtuals

llvm-svn: 18601
 2004-12-07 08:11:24 +00:00
Chris Lattner 1b784b117d Fix DeadStoreElimination/2004-11-28-LiveStoreDeleted.ll 
llvm-svn: 18308
 2004-11-28 20:30:15 +00:00
Chris Lattner 63b45b4768 The trick with globals actually works with allocas and malloc too 
llvm-svn: 18262
 2004-11-26 20:01:48 +00:00
Chris Lattner 75819a81b2 A store or load cannot alias a global if the accessed amount is larger then 
the global.

This implements Regression/Analysis/BasicAA/global-size.ll

llvm-svn: 18261
 2004-11-26 19:20:01 +00:00
Chris Lattner c368b63515 Simplify conditional and fix LICM/2004-11-17-UndefIndexCrash.ll 
by saying what we mean

llvm-svn: 17913
 2004-11-17 17:39:39 +00:00
Chris Lattner 3c3e058406 Be more careful about looking for constants when we really want constantint's. 
llvm-svn: 17029
 2004-10-16 16:07:10 +00:00
Alkis Evlogimenos a5c04ee50f Fixes to make LLVM compile with vc7.1. 
Patch contributed by Paolo Invernizzi!

llvm-svn: 16152
 2004-09-03 18:19:51 +00:00
Alkis Evlogimenos fd7a2d4477 Merge i*.h headers into Instructions.h as part of bug403. 
llvm-svn: 15325
 2004-07-29 12:17:34 +00:00
Chris Lattner c21acbfea4 Fix test/Regression/Analysis/BasicAA/2004-07-28-MustAliasbug.llx 
This also fixes the miscompilation of MallocBench/gs with dead store
elimination enabled.

llvm-svn: 15324
 2004-07-29 07:56:39 +00:00
Chris Lattner aa05a6e5a1 Make basicaa a bit more aggressive 
llvm-svn: 15252
 2004-07-27 02:18:52 +00:00
Chris Lattner 6b570266b8 basic-aa can actually provide simple mod/ref info 
llvm-svn: 15251
 2004-07-27 02:13:55 +00:00
Chris Lattner 782ab98c56 This was implemented back in march 
llvm-svn: 15250
 2004-07-27 01:59:42 +00:00
Chris Lattner fdcf624939 Do not ignore casts unless they are pointer-pointer casts. This caused us 
to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.

llvm-svn: 15062
 2004-07-21 03:56:54 +00:00
Reid Spencer 30d69a5af9 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14942
 2004-07-18 00:18:30 +00:00
Chris Lattner cbdf371d30 Simplify logic. 
llvm-svn: 14825
 2004-07-14 20:27:12 +00:00
Chris Lattner feda9d0583 Fix a tiny bug in the -no-aa pass, in which it did not ever get a target data. 
This is a regression from 1.2, though noone uses -no-aa anyway

llvm-svn: 14245
 2004-06-19 08:05:58 +00:00
Chris Lattner fbf4dc3bd0 isnan is dead 
llvm-svn: 14191
 2004-06-15 21:52:58 +00:00
Chris Lattner 66f313725c llvm.isnan doesn't access memory 
llvm-svn: 14151
 2004-06-11 06:17:13 +00:00
Chris Lattner 59c8ed8843 Move the -no-aa AA implementation into this file since both of these 
alias analysis implementations are special: they do not autoforward to a
chained implementation of alias analysis

llvm-svn: 13683
 2004-05-23 21:15:12 +00:00
Chris Lattner c9e37d7cc9 Hrm, operator new and new[] do not belong here. We should not CSE them! :) 
llvm-svn: 12859
 2004-04-12 05:16:42 +00:00
Chris Lattner 403abb824f operator new & operator new[] do not kill any legal memory locations. 
llvm-svn: 12833
 2004-04-11 18:16:34 +00:00
Chris Lattner c5fad355f8 Allow clients to be more efficient. 
llvm-svn: 12831
 2004-04-11 16:43:07 +00:00
Chris Lattner 4a1b03c773 Add a couple of more functions that cannot access memory (the intrinsics) and 
don't write to memory

llvm-svn: 12808
 2004-04-10 06:55:27 +00:00
Chris Lattner 69193f93b6 Support getelementptr instructions which use uint's to index into structure 
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.

llvm-svn: 12653
 2004-04-05 01:30:19 +00:00
Chris Lattner 8ad948ddbd Add some missing functions. Make sure to handle calls together in case the 
client has another VN implementation that can VN calls.

llvm-svn: 12427
 2004-03-16 03:41:35 +00:00
Chris Lattner ea42c857d6 Fix a minor bug, implementing GCSE/call_pure_function.ll 
Also, add some stuff I missed before.

llvm-svn: 12417
 2004-03-15 04:18:28 +00:00
Chris Lattner d82256a7a1 Teach basicaa about some stdc functions. 
llvm-svn: 12408
 2004-03-15 03:36:49 +00:00
Chris Lattner f9e69b4553 Fix a couple of minor problems. Because PHI nodes can use themselves, this 
could cause infinite loops.  Also, getUnderlyingObject can return null

llvm-svn: 12351
 2004-03-12 23:12:55 +00:00
Chris Lattner a036253872 Implement mod/ref analysis for a trivial case where locals don't escape. 
This comes up when you have a local array on the stack and you never pass
the address of elements around.

llvm-svn: 12349
 2004-03-12 22:39:00 +00:00
Chris Lattner 6f6e0f29ad Expand on my note-to-self 
llvm-svn: 12029
 2004-03-01 02:44:44 +00:00