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Author SHA1 Message Date
Chris Lattner
80d9c3a900 - InstCombine: (X | C1) & C2 --> X & C2 iff C1 & C1 == 0 
- InstCombine: (X | C) & C --> C
  - InstCombine: (X | C1) & C2 --> (X | (C1&C2)) & C2

llvm-svn: 7269
 2003-07-23 19:25:52 +00:00
Chris Lattner
df40438bd7 New testcase 
llvm-svn: 7267
 2003-07-23 19:24:34 +00:00
Chris Lattner
5a4bcac8b1 New testcase 
llvm-svn: 7266
 2003-07-23 19:05:29 +00:00
Brian Gaeke
9de468d398 Add, rewrite, and/or reformat many comments. 
Stop passing ostreams around: we already have one perfectly good ostream
and we can all share it.

Stop stashing a pointer to TargetData in the Pass object, because that will
lead to a crash if there are no functions in the module (ouch!)  Instead,
use addRequired() and getAnalysis(), like we always should have done.

Move the check for ConstantExpr up before the check for isPrimitiveType,
because we need to be able to catch e.g. ubyte (cast bool false to ubyte),
whose type is primitive but which is nevertheless a ConstantExpr, by calling
our specialized handler instead of the AsmWriter. This would result in
assembler errors when we would try to output something like ".byte (cast
bool false to ubyte)".

GC some unused variable declarations.

llvm-svn: 7265
 2003-07-23 18:37:06 +00:00
Chris Lattner
76c1da471c IC: (X & C1) | C2 --> (X | C2) & (C1|C2) 
IC: (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)

We are now guaranteed that all 'or's will be inside of 'and's, and all 'and's
will be inside of 'xor's, if the second operands are constants.

llvm-svn: 7264
 2003-07-23 18:29:44 +00:00
Chris Lattner
1bfbaa842e New testcases 
llvm-svn: 7263
 2003-07-23 18:28:42 +00:00
Chris Lattner
4b43cd9700 IC: (X ^ C1) & C2 --> (X & C2) ^ (C1&C2) 
Minor code cleanup

llvm-svn: 7262
 2003-07-23 17:57:01 +00:00
Chris Lattner
3847a79aa0 New testcase 
llvm-svn: 7261
 2003-07-23 17:56:34 +00:00
Chris Lattner
ae691a3068 InstCombine: (X ^ 4) == 8 --> X == 12 
llvm-svn: 7260
 2003-07-23 17:26:36 +00:00
Chris Lattner
be67ac6543 New testcase 
llvm-svn: 7259
 2003-07-23 17:25:55 +00:00
Chris Lattner
04652336b2 Add support for ~ operator on constants 
llvm-svn: 7258
 2003-07-23 17:21:17 +00:00
Chris Lattner
b07de65646 IC: (X & 5) == 13 --> false 
IC: (X | 8) == 4  --> false

llvm-svn: 7257
 2003-07-23 17:02:11 +00:00
Chris Lattner
eaf43bbfae New tests 
llvm-svn: 7256
 2003-07-23 17:01:18 +00:00
John Criswell
8a92405de7 Renamed libtool to mklib for your tab completion pleasure. 
llvm-svn: 7255
 2003-07-23 16:52:50 +00:00
Chris Lattner
dd48c4b1e4 Remove redundant const qualifier 
llvm-svn: 7254
 2003-07-23 15:30:32 +00:00
Chris Lattner
1351c304dc Remove redundant const qualifiers from cast<> expressions 
llvm-svn: 7253
 2003-07-23 15:30:06 +00:00
Chris Lattner
6ad460b336 Simplify code by using ConstantInt::getRawValue instead of checking to see 
whether the constant is signed or unsigned, then casting

llvm-svn: 7252
 2003-07-23 15:22:26 +00:00
Chris Lattner
9c569f48a0 Remove unnecessary casts 
llvm-svn: 7250
 2003-07-23 15:17:51 +00:00
Chris Lattner
bfe70df7fc Fit code into 80 columns 
llvm-svn: 7249
 2003-07-23 15:17:01 +00:00
Chris Lattner
0fce06e40e Eliminate old-style cast 
llvm-svn: 7248
 2003-07-23 15:16:40 +00:00
Chris Lattner
c1049acba1 Random cleanups 
llvm-svn: 7247
 2003-07-23 14:59:40 +00:00
Chris Lattner
67138b2c59 Remove using decl 
llvm-svn: 7246
 2003-07-23 14:55:59 +00:00
Chris Lattner
63ea851f94 Remove explicit const qualifiers 
llvm-svn: 7245
 2003-07-23 14:54:33 +00:00
Chris Lattner
913c260d94 Add more doxygen comments, add new ConstantInt::getRawValue method 
llvm-svn: 7244
 2003-07-23 14:49:06 +00:00
Chris Lattner
74a266d229 Fix bug: TailDup/2003-07-22-InfiniteLoop.ll 
llvm-svn: 7243
 2003-07-23 03:32:41 +00:00
Chris Lattner
5ff1500e85 New testcase that caused infinite loop in taildup 
llvm-svn: 7242
 2003-07-23 03:32:11 +00:00
Chris Lattner
7594fa7280 - InstCombine (cast (xor A, B) to bool) ==> (setne A, B) 
- InstCombine (cast (and X, (1 << size(X)-1)) to bool) ==> x < 0

llvm-svn: 7241
 2003-07-22 21:46:59 +00:00
Chris Lattner
e1ab6bb4de New testcases 
llvm-svn: 7240
 2003-07-22 21:44:06 +00:00
John Criswell
9d03ea2e11 Repaired the --enable and --disable options. 
llvm-svn: 7239
 2003-07-22 21:00:24 +00:00
John Criswell
ba5a656e6c Fixed the enable/disable options. The AC_ARG_ENABLE macro does not perform 
the *action-if-not-given* code when the --disable option is used.
Rather, the AC_ARG_ENABLE macro sets the $enableval variable, which then needs
to be checked to determine if --enable, --disable, or neither was specified.

llvm-svn: 7238
 2003-07-22 20:59:52 +00:00
Brian Gaeke
5779654cfc Add documentation for runOnMachineFunction() 
llvm-svn: 7237
 2003-07-22 20:53:20 +00:00
John Criswell
dc0ddfbbb0 Made some corrections to the enable-llc_diffs option. 
This should keep it from breaking for now.

llvm-svn: 7236
 2003-07-22 20:07:49 +00:00
John Criswell
84b1b5a35a Generated a new configure script. 
This script uses files within the new autoconf subdirectory and includes
changes from Brian Gaeke's recent changes to configure.ac.

llvm-svn: 7235
 2003-07-22 19:18:09 +00:00
John Criswell
86c560ed20 Updated to use files within the autoconf subdirectory. 
llvm-svn: 7234
 2003-07-22 19:17:35 +00:00
John Criswell
24031b974c These are the autoconf files in their new home. 
llvm-svn: 7233
 2003-07-22 19:13:20 +00:00
John Criswell
9b5b343796 Moving these files to the llvm/autoconf directory. 
llvm-svn: 7232
 2003-07-22 19:12:02 +00:00
John Criswell
8683d69423 Moved configure.ac to the autoconf directory. 
llvm-svn: 7231
 2003-07-22 19:10:58 +00:00
Brian Gaeke
c8a0278ab8 turn off DISABLE_LLC_DIFFS for x86. 
llvm-svn: 7230
 2003-07-22 18:28:17 +00:00
Chris Lattner
f71891f2e0 Add new testcase 
llvm-svn: 7229
 2003-07-22 16:18:09 +00:00
Vikram S. Adve
f5e0c07db6 (1) Pass 'VAR=string' arguments to gmake 
(2) Detect LLVMDIR using the LEVEL variable in Makefile.
(3) To perform #2 propertly, use the same Makefile search rules as gmake.

llvm-svn: 7228
 2003-07-22 12:35:28 +00:00
Vikram S. Adve
420ec0bb0f Fix comment. 
llvm-svn: 7227
 2003-07-22 12:08:58 +00:00
John Criswell
681385594f Updated from the discussion on July 21, 2003. 
Expanded upon testing priorities.

llvm-svn: 7225
 2003-07-21 22:22:48 +00:00
Misha Brukman
f5b33e92c2 Fixed misspelling. 
llvm-svn: 7223
 2003-07-21 21:58:16 +00:00
Chris Lattner
9f501f98c8 Simplify code a bit 
llvm-svn: 7217
 2003-07-21 19:56:49 +00:00
John Criswell
98946bac5b Added code that checks to see if a global variable is external before replacing 
a load of the global variable with the variable's constant value.

llvm-svn: 7216
 2003-07-21 19:42:57 +00:00
John Criswell
b62eacd2bb Regression test for the Instruction Combining optimizization. 
This test helps to see if the optimization correctly handles variables that
are declared constant and external.

llvm-svn: 7215
 2003-07-21 19:41:51 +00:00
Chris Lattner
ac8e9ebce9 Remove unneccesary #ifdefs 
llvm-svn: 7214
 2003-07-21 19:23:31 +00:00
Chris Lattner
425abc04ab Fix warnings 
llvm-svn: 7213
 2003-07-21 19:20:44 +00:00
Chris Lattner
7f36f7e9f0 Remove instloops library 
llvm-svn: 7210
 2003-07-21 19:07:27 +00:00
Misha Brukman
f7ca33f163 Eliminated dead code. 
llvm-svn: 7209
 2003-07-21 16:34:35 +00:00