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44 Commits

Author SHA1 Message Date
Chris Lattner
57e5760947 add m_BitCast for matching a bitcast. 
llvm-svn: 112222
 2010-08-26 21:35:52 +00:00
Chris Lattner
91fafbd4e8 change the canonical form of "cond ? -1 : 0" to be 
"sext cond" instead of a select.  This simplifies some instcombine
code, matches the policy for zext (cond ? 1 : 0 -> zext), and allows
us to generate better code for a testcase on ppc.

llvm-svn: 94339
 2010-01-24 00:09:49 +00:00
Chris Lattner
89b1b63bdf teach instcombine to optimize pointer difference idioms involving constant 
expressions.  This is a step towards comment #4 in PR3351.

llvm-svn: 92401
 2010-01-01 22:29:12 +00:00
Chris Lattner
2a0366af9e add a helper for matching "1". 
llvm-svn: 83760
 2009-10-11 07:51:25 +00:00
Duncan Sands
0d5fa5f018 Mark more constants unsigned, as warned about by icc (#68). 
Patch by Erick Tryzelaar.

llvm-svn: 81116
 2009-09-06 12:56:52 +00:00
Dan Gohman
9a6b2f19e5 Remove a bunch more now-unnecessary Context arguments. 
llvm-svn: 78809
 2009-08-12 16:23:25 +00:00
Owen Anderson
0ce2151b36 Move ConstantExpr to 2.5 API. 
llvm-svn: 77494
 2009-07-29 18:55:55 +00:00
Owen Anderson
256c2c250e Move ConstantFP construction back to the 2.5-ish API. 
llvm-svn: 77247
 2009-07-27 20:59:43 +00:00
Eli Friedman
88f1b31a57 Fix obvious typo. 
llvm-svn: 75563
 2009-07-14 00:09:42 +00:00
Owen Anderson
7076f1ffb7 Push LLVMContext through the PatternMatch API. 
llvm-svn: 75255
 2009-07-10 17:35:01 +00:00
Dan Gohman
5f6f8101d5 Split the Add, Sub, and Mul instruction opcodes into separate 
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897
 2009-06-04 22:49:04 +00:00
Misha Brukman
7ee4196e74 Removed trailing whitespace. 
llvm-svn: 65196
 2009-02-20 22:51:36 +00:00
Chris Lattner
ff7c07ce73 no need to negate the APInt for 0. 
llvm-svn: 61777
 2009-01-06 00:06:25 +00:00
Chris Lattner
33b4e3aad4 Change m_ConstantInt and m_SelectCst to take their constant integers 
as template arguments instead of as instance variables, exposing more
optimization opportunities to the compiler earlier.

llvm-svn: 61776
 2009-01-05 23:53:12 +00:00
Chris Lattner
e10764369d make m_ConstantInt(int64_t) safely match ConstantInt's that are larger than i64. 
This fixes an instcombine crash on PR3235.

llvm-svn: 61775
 2009-01-05 23:45:50 +00:00
Misha Brukman
2d4b2dd2d3 * Alphabetized system headers per the style guide 
* Minor spacing and comment cleanups

llvm-svn: 61590
 2009-01-02 20:26:30 +00:00
Chris Lattner
047dc0a77a add a new m_Specific pattern that matches only if we have a specific Value*. 
llvm-svn: 59393
 2008-11-16 04:38:30 +00:00
Chris Lattner
f612178d64 add a new template for matching a select between two constants. 
llvm-svn: 59391
 2008-11-16 04:33:10 +00:00
Dan Gohman
50061675c5 Canonicalize sext(i1) to i1?-1:0, and update various instcombine 
optimizations accordingly.

llvm-svn: 58457
 2008-10-30 20:40:10 +00:00
Chris Lattner
69724eed32 add support for pattern matching 'neg' 
llvm-svn: 50883
 2008-05-09 05:20:27 +00:00
Chris Lattner
a39e69f292 add match support for casts. 
llvm-svn: 45744
 2008-01-08 07:02:44 +00:00
Chris Lattner
e0b1ee937a Don't attribute in file headers anymore. See llvmdev for the 
discussion of this change.  Boy are my fingers tired. ;-)

llvm-svn: 45411
 2007-12-29 19:59:42 +00:00
Chris Lattner
545c1c43be Add m_Zero(). 
llvm-svn: 45255
 2007-12-20 04:47:44 +00:00
Chris Lattner
1de26b7677 m_not should match vector not 
llvm-svn: 37587
 2007-06-15 06:13:47 +00:00
Dan Gohman
2d4b1767ab Rename Value::getValueType to getValueID, to avoid confusion with 
other things named getValueType.

llvm-svn: 35964
 2007-04-13 18:12:09 +00:00
Andrew Lenharth
3c51b17d7b I love non-deturminism. Returning objects with references to stack objects is a bad idea (TM). 
llvm-svn: 34210
 2007-02-13 00:37:50 +00:00
Reid Spencer
591bfa1e0b Changes to support making the shift instructions be true BinaryOperators. 
This feature is needed in order to support shifts of more than 255 bits
on large integer types.  This changes the syntax for llvm assembly to
make shl, ashr and lshr instructions look like a binary operator:
   shl i32 %X, 1
instead of
   shl i32 %X, i8 1
Additionally, this should help a few passes perform additional optimizations.

llvm-svn: 33776
 2007-02-02 02:16:23 +00:00
Reid Spencer
e33c18f4d2 For PR970: 
Clean up handling of isFloatingPoint() and dealing with PackedType.
Patch by Gordon Henriksen!

llvm-svn: 33415
 2007-01-21 00:29:26 +00:00
Zhou Sheng
23d24526b2 For PR1043: 
Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.

llvm-svn: 33073
 2007-01-11 12:24:14 +00:00
Reid Spencer
4428c3483b For PR950: 
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.

llvm-svn: 32751
 2006-12-23 06:05:41 +00:00
Reid Spencer
992d9788b3 For PR950: 
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.

llvm-svn: 31931
 2006-11-27 01:05:10 +00:00
Reid Spencer
da1f5b882a For PR950: 
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.

llvm-svn: 31542
 2006-11-08 06:47:33 +00:00
Reid Spencer
3d33eff52e Fix a small bug noticed on code review. 
llvm-svn: 31476
 2006-11-06 18:47:14 +00:00
Reid Spencer
1abf69e923 For PR950: 
Replace the REM instruction with UREM, SREM and FREM.

llvm-svn: 31369
 2006-11-02 01:53:59 +00:00
Reid Spencer
6833ffe8b8 For PR950: 
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.

llvm-svn: 31195
 2006-10-26 06:15:43 +00:00
Chris Lattner
3c4ca91dbd Add support for pattern matching cast operations 
llvm-svn: 30454
 2006-09-18 05:17:11 +00:00
Chris Lattner
497d2b6701 Add some more matcher classes for shifts. 
llvm-svn: 28804
 2006-06-15 19:25:28 +00:00
Chris Lattner
307a2b55bb Fix typo that caused build failures for things trying to use m_Or. 
llvm-svn: 26153
 2006-02-13 23:06:39 +00:00
Chris Lattner
96f29dbdbe 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).

llvm-svn: 23468
 2005-09-27 06:38:05 +00:00
Misha Brukman
8018cc9e05 Remove trailing whitespace 
llvm-svn: 21411
 2005-04-21 20:48:15 +00:00
Chris Lattner
1d52a24587 Add support for shifts 
llvm-svn: 17702
 2004-11-13 19:32:45 +00:00
Chris Lattner
83c911936d Minor efficiency improvements 
llvm-svn: 15461
 2004-08-04 04:45:29 +00:00
Misha Brukman
33a80cd54d Enable compilation. 
llvm-svn: 15344
 2004-07-30 14:33:07 +00:00
Chris Lattner
ace669f381 Check in some useful helper routines for doing ML-style pattern matching on 
the LLVM IR.

llvm-svn: 15341
 2004-07-30 07:45:00 +00:00