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3196 Commits

Author SHA1 Message Date
Chris Lattner
4deaf3b5c0 Fix obvious type-o 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5932 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 05:23:10 +00:00
Chris Lattner
d5bc41a249 Fix problem where we would read 64 bits worth of pointer information, even on 32 bit targets! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5930 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 04:21:19 +00:00
Chris Lattner
bceb2b0061 Fix major problem with PHI node traversal: rechecking PHIs should go into 
the visit function.  The worklist is for when their lattice value changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5927 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 03:35:10 +00:00
Chris Lattner
6cf4cb90a0 ** CORRECTLY, conservatively handle constant expressions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5924 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 02:52:06 +00:00
Chris Lattner
eca8e8f111 *** Huge: Make constantexprs be handled correctly, conservatively 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5923 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 02:51:46 +00:00
Chris Lattner
46326d9cdf Allow for easy detection of when a "default" TargetData is created by the 
passmanager, which is never the right thing to do.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5922 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 02:50:45 +00:00
Chris Lattner
9de28289f8 Minor non-functional changes: 
* Spell propagate right
  * Improve performance of phi node handling
  * Delete using directive
  * Other minor changes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5920 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 02:50:03 +00:00
Chris Lattner
c8789cb40b Fix bug: mem2reg/2003-04-24-MultipleIdenticalSuccessors.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5919 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-25 00:54:58 +00:00
Chris Lattner
a172846d3a Fix a nasty bug where the ConstantMerge pass was invalidating the TargetData pass 
even though it was immutable.  Immutable passes should never end up in CurrentAnalyses!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5906 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 20:07:38 +00:00
Chris Lattner
53a0c38b5f add a new targetdata ctor to create a target data appropriate to the module 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5903 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 19:09:05 +00:00
Chris Lattner
ec8aae3e11 Trivial cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5899 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 18:35:51 +00:00
Chris Lattner
16125fb749 Make the levelraise pass be well behaved w.r.t the TargetData that the current 
PassMAnager provides.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5896 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 18:25:27 +00:00
Chris Lattner
ad80a46caa Fix iterator invalidation problem 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5895 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 17:52:20 +00:00
Chris Lattner
892310eaff Make sure that the cloned module retains the type symbol table entries! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5894 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 17:15:33 +00:00
Chris Lattner
7899b74fdb Make sure to preserve endiannes and pointer size when cloning modules! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5892 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-24 15:54:40 +00:00
Chris Lattner
2be50797a1 Fix bug where pointers were assumed to always be 64 bits in size! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5890 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 20:41:01 +00:00
Chris Lattner
5f311a7bce Add memcpy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5887 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 20:23:16 +00:00
Chris Lattner
fd506f551d Fix a problem with setcc instructions and pointers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5886 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:55:35 +00:00
Chris Lattner
957d62aa79 Implement a bunch of new external functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5885 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:55:24 +00:00
Chris Lattner
669b76ae87 Implement &|^ on bool values 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5884 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:21:00 +00:00
Chris Lattner
f87a198dcb Add support for _IO_getc function used on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5883 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:20:50 +00:00
Chris Lattner
f1acd9623c Fix problem where labels were being incorrectly elided, and fix problem 
where PHI copies where not emitted for the default label of switch insts


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5882 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:15:13 +00:00
Chris Lattner
f5612b76bc Fix the super obnoxious "cast to pointer from integer of different size" warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5881 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:09:22 +00:00
Chris Lattner
d8c03bfa0a * Implement access to external variables in LLI 
* Implement GetElementPtr constant expressions when initializing global variables


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5880 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 19:01:49 +00:00
Chris Lattner
c2b97d43a0 Fix Bug: Linker/2003-04-23-LinkOnceLost.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5879 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 18:38:39 +00:00
Chris Lattner
3907d11200 Fix iterator invalidation problem with cast instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5876 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 17:57:48 +00:00
Chris Lattner
548f61d66a Implement the constantexpr CAST instruction correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5875 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 17:22:12 +00:00
Chris Lattner
cf31784c69 We now need to link libscalar to get the switch lowering pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5874 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:43:02 +00:00
Chris Lattner
e408e25132 Remove unnecesary &*'s 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5872 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:37:45 +00:00
Chris Lattner
2ee82e05e3 Remove unneccesary &* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5871 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:36:11 +00:00
Chris Lattner
155e68feea Add support for the Switch instruction by running the lowerSwitch pass first 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5867 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:24:55 +00:00
Chris Lattner
14383485ac New pass to lower switch instructions to branch instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5865 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:23:59 +00:00
Chris Lattner
350c0a8216 Minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5863 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 16:18:14 +00:00
Misha Brukman
09ff1509ba Fixed 'prevalent'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5860 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-23 02:59:05 +00:00
Misha Brukman
63e04f3ccb Just some code beautification changes I had sitting around in my tree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5859 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 23:00:08 +00:00
Chris Lattner
b581148bd9 Fix bug: BasicAA/2003-04-22-GEPProblem.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5858 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 22:00:27 +00:00
Chris Lattner
0286835685 Kill using declarations 
Kill code for invalid operations on pointers


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5856 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 21:22:33 +00:00
Chris Lattner
5bff50d1b0 Implement cast to bool 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5855 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 21:15:56 +00:00
Chris Lattner
b945e4ddae Get rid of extraneous arguments to implementation functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5852 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 20:37:39 +00:00
Chris Lattner
09e9392d63 Add support to LLI for switch instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5851 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 20:34:47 +00:00
Chris Lattner
7a5a1f790f Use a union to cast int to fp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5849 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 20:20:28 +00:00
Misha Brukman
8829dcd15b It's "necessary"... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5848 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 20:20:11 +00:00
Chris Lattner
a9f5e0517e Add support for the switch instruction to the CWriter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5847 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 20:19:52 +00:00
Chris Lattner
43a9994c01 Add warning when linking modules with disagreeing target properties 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5845 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 19:13:20 +00:00
Chris Lattner
61a909a6fd Emit information about target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5844 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 19:07:19 +00:00
Chris Lattner
b9bcbb533f Allow information about the target to be specified in the .ll file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5843 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 19:07:06 +00:00
Chris Lattner
9232b99461 Namespacify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5840 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 18:42:41 +00:00
Chris Lattner
76e3896881 Add support for reading and writing pointersize/endianness to and from bytecode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5839 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 18:15:10 +00:00
Chris Lattner
75f20532ec Preserve module source information in the ModuleID 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5836 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 18:02:52 +00:00
Chris Lattner
37f59419b8 Preserve the new moduleID field 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5835 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 18:02:26 +00:00
Chris Lattner
678c6a089d Add support for tracking whether a module is 64/32 bit and big/little endian 
Also add a moduleID field which can be used for diagnostics


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5834 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 18:02:04 +00:00
Misha Brukman
baf0607cbc It's "necessary" to spell "necessarily" correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5833 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-22 17:54:23 +00:00
Chris Lattner
59ee0eeffd Make stderr, stdout, stdin work with LLI 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5832 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 22:44:36 +00:00
Chris Lattner
04e2ad76f8 Fix wierd idiom 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5831 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 22:43:32 +00:00
Chris Lattner
9dbf6dddce fprintf CAN take exactly 2 args 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5830 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 22:43:20 +00:00
Chris Lattner
4b12cdec01 Add support for a simple constantexpr: cast of one ptr type to another 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5829 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 21:33:44 +00:00
Chris Lattner
2719bac905 Fix bug: 2003-01-30-LinkerRename.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5828 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 21:15:04 +00:00
Chris Lattner
0fec08eb58 Fix linking a function with qualifiers to a external function declaration: 
Fixed bug: Linker/2003-04-21-Linkage.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5827 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 21:07:05 +00:00
Chris Lattner
085c801dee Fix bug where use still existed in dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5824 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-21 19:15:26 +00:00
Chris Lattner
968cfd0b6e Initial support for reading standard .a files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5820 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-19 21:45:34 +00:00
Chris Lattner
f6099df194 Add support for reading unaligned bytecode buffers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5819 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-19 21:45:17 +00:00
Chris Lattner
14e8e29105 Remove arbitrary limitation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5818 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-19 00:50:37 +00:00
Chris Lattner
ea2294a498 Implement: FunctionResolve/2003-04-18-ForwardDeclGlobal.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5816 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-19 00:15:27 +00:00
Chris Lattner
393689afa9 Fix bug: Mem2reg/2003-04-18-DeadBlockProblem.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5810 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-18 19:25:22 +00:00
Chris Lattner
156bcf3f65 Global constants CAN be external 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5808 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-18 04:34:29 +00:00
Chris Lattner
869de25380 Fix a big bad bug I checked in yesterday :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5807 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-18 04:11:56 +00:00
Chris Lattner
17d145d26f Refactor CloneFunction to expose the new CloneBasicBlock function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5806 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-18 03:50:09 +00:00
Chris Lattner
15faa8498c New const_cast instead of c style cast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5805 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-18 03:49:49 +00:00
Chris Lattner
3e8ba10750 Allow hexadecimal integer constants to be used 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5802 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-17 22:17:32 +00:00
Chris Lattner
d628f6a9a4 Don't build constantexprs that could be folded 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5801 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-17 19:24:48 +00:00
Chris Lattner
27287de06b Allow constant folding of GEP instructions, even if we don't do a whole lot yet. 
Fold ConstExpr casts better
castToPointer shouldn't be forced to return a constantpointer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5800 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-17 19:24:18 +00:00
Chris Lattner
fd73cf895c Don't force a ConstantPointer to be returned 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5799 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-17 19:22:47 +00:00
Chris Lattner
ac7ad68cc0 Fix bug: IndVarSimplify/2003-04-16-ExprAnalysis.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5795 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 22:50:19 +00:00
Chris Lattner
fb242b6edc Change the interface to constant expressions to allow automatic folding 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5793 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 22:40:51 +00:00
Chris Lattner
e3869c83e7 Add support to the bytecode reader/writer for the new linkage types 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5790 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 21:16:05 +00:00
Chris Lattner
5399741622 Add code to verify correctly linkages 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5788 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 20:42:40 +00:00
Chris Lattner
4ad02e726d Add new linkage types to support a real frontend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5786 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 20:28:45 +00:00
Chris Lattner
ffd9bf404c Improve the efficiency and cleanup writing a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5782 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 20:20:02 +00:00
Chris Lattner
1f862af473 Don't allow declaring an external internal variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5781 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-16 18:13:57 +00:00
Chris Lattner
af76d0ea0b Fix bug: Assember2003-04-15-ConstantInitAssertion.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5777 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-15 16:09:31 +00:00
Chris Lattner
af7ccd9bba Make help message more clear 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5775 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-13 03:50:14 +00:00
Chris Lattner
d4bd3eba5d * Fix bug: Mem2Reg/2003-04-10-DFNotFound.ll 
* Make Mem2Reg assign version numbers now for renamed variables instead of
  .mem2reg suffixes.  This produces what people think of as SSA.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5771 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-10 19:41:13 +00:00
Misha Brukman
2c821cc06e Fixed compilation errors, command-line argument declarations, cleaned up code to 
look nicer and removed useless stuff.

Also renamed a few variables, moved them into namespaces, converted outputting
to a file into a print to std::cerr with a DEBUG() guard, as all passes should
do anyway.

No functional changes have been made. However, this code now compiles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5769 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-10 19:19:23 +00:00
Misha Brukman
8baa01c1d7 Made the code readable: 
* Lines must be wrapped at 80 chars. This is a hard limit.
* Consistent style on functions, braces, if, for, etc. Code must be readable.

No functional changes have been made, even though I added a new typedef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5768 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-09 21:51:34 +00:00
Guochun Shi
6fbe5fbce1 change the include file names and some class names to make it compile 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5764 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-04-06 23:56:19 +00:00
Chris Lattner
f9a88b684d Implement scanf and fix sscanf to actually endian swap the results correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5763 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-31 22:12:37 +00:00
Chris Lattner
e941291a7a Initial checkin of PRE on LLVM. This implementation is still lacking in 
several ways:

 * Load expressions are not PRE'd well.  Alias Analysis should be used to
   get accurate information when computing anticipatibility.
 * The expression collection implementation does not handle PHI nodes properly,
   thus the implementation misses many opportunities to PRE.
 * This code could be sped up quite a bit

Despite these flaws, the code seems to work well, and handles PR's as one
would expect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5759 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-31 19:55:43 +00:00
Chris Lattner
6c0e0496dc * We now preserve the no-critical-edge pass (because we cannot insert critical edges) 
* Small modification to be more efficient


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5757 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-31 17:30:25 +00:00
Guochun Shi
f1c154f5e6 *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5755 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-27 17:57:44 +00:00
Chris Lattner
c277eaa41e Move BreakCriticalEdges pass to lib/Transforms/Utils 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5754 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-21 21:43:19 +00:00
Chris Lattner
f1ab454b71 Add helper method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5753 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-21 21:41:02 +00:00
Chris Lattner
3413d150dc * Change the order that globals and constants are processed in 
* Add support for implicit zero initializers


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5750 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-19 20:57:22 +00:00
Chris Lattner
186a1f71e6 Changes to the V2 bytecode format: 
- Null values are implicitly encoded instead of explicitly, this makes
    things more compact!
  - More compactly represent ConstantPointerRefs
  - Bytecode files are represented as:
      Header|GlobalTypes|GlobalVars/Function Protos|Constants|Functions|SymTab
    instead of
      Header|GlobalTypes|Constants|GlobalVars/Function Protos|Functions|SymTab
    which makes a lot of things simpler.

Writer changes:
  - We now explictly encode versioning information in the bytecode files.
  - This allows new code to read bytecode files produced by old code, but
    new bytecode files can have enhancements such as the above.  Although this
    makes the reader a bit more complex (having to deal with old formats), the
    writer only needs to be able to produce the most recent version.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5749 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-19 20:56:46 +00:00
Chris Lattner
52e20b0977 * Bug fixes: 
- Fix problems where the constant table would not get updated when
    resolving constants causes other constants to change.

Changes to the V2 bytecode format
  - Null values are implicitly encoded instead of explicitly, this makes
    things more compact!
  - More compactly represent ConstantPointerRefs
  - Bytecode files are represented as:
      Header|GlobalTypes|GlobalVars/Function Protos|Constants|Functions|SymTab
    instead of
      Header|GlobalTypes|Constants|GlobalVars/Function Protos|Functions|SymTab
    which makes a lot of things simpler.

Changes to the reader:
  - Function loading code is much simpler.  We now no longer make function
    PlaceHolderHelper objects to be replaced with real functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5748 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-19 20:54:26 +00:00
Chris Lattner
c8802d2c16 Add the following instcombine xforms: 
- Implement simple reassociation: (A|c1)|(B|c2) == (A|B)|(c1|c2)
  - (A & C1)+(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
  - (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5743 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-11 00:12:48 +00:00
Chris Lattner
a4f445b28c Implement: -A*-B == A*B 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5740 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 23:23:04 +00:00
Chris Lattner
a27231acc0 Add new transformation: // (~A | ~B) == (~(A & B)) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5738 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 23:13:59 +00:00
Chris Lattner
8d96964e29 Generalize not and neg comparison testers to allow constant to be considered not'able and neg'able. This 
allows optimization of this:
int %test4(int %A, int %B) {
        %a = xor int %A, -1
        %c = and int %a, 5    ; 5 = ~c2
        %d = xor int %c, -1
        ret int %d
}

into this:
int %test4(int %A, int %B) {            ; No predecessors!
        %c.demorgan = or int %A, -6             ; <int> [#uses=1]
        ret int %c.demorgan
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5736 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 23:06:50 +00:00
Chris Lattner
1680312867 Fix ConstantUInt::isAllOnesValue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5734 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 22:39:02 +00:00
Chris Lattner
4f98c56936 Generalize (A+c1)+c2 optimization to work with all associative operators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5733 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 21:43:22 +00:00