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27 Commits

Author SHA1 Message Date
Chris Lattner
d2c58366d8 generalize a transformation even more: we don't care whether the 
input the the mul is a zext from bool, just that it is all zeros
other than the low bit.  This fixes some phase ordering issues
that would cause us to miss some xforms in mul.ll when the worklist
is visited differently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83794 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 21:29:45 +00:00
Chris Lattner
0036e3a469 simplify a transformation by making it more general. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83792 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 21:22:21 +00:00
Chris Lattner
8af304ab3b implement rdar://7293527, a trivial instcombine that llvm-gcc 
gets but clang doesn't, because it is implemented in GCC's
fold routine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83761 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 07:53:15 +00:00
Dan Gohman
3e054fe9ef Use opt -S instead of piping bitcode output through llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81257 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 22:34:10 +00:00
Dan Gohman
b1e1e82c54 Change these tests to feed the assembly files to opt directly, instead 
of using llvm-as, now that opt supports this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 16:50:01 +00:00
Eli Friedman
b468709c91 Fix trivial todo in instcombine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75586 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-14 02:01:53 +00:00
Dan Gohman
ae3a0be92e 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-04 22:49:04 +00:00
Dan Gohman
0e19a3f89e Check in test changes that I accidentally left out of r72872. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72875 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-04 18:22:31 +00:00
Chris Lattner
b8cd4d3d49 Implement support for simplifying vector comparisons by 0.0 and 1.0 like we 
do for scalars.  Patch contributed by Nicolas Capens

This also generalizes the previous xforms to work on long double, now that 
isExactlyValue works for long double.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54653 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-11 22:06:05 +00:00
Tanya Lattner
f04d8d1593 Upgrade tests to not use llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 03:45:45 +00:00
Chris Lattner
e2ece3f479 rename function to avoid llvm-upgrade warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39895 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-16 04:09:00 +00:00
Reid Spencer
7c65d4345e For PR1319: 
Make use of the END. facility on all files > 1K so that we aren't wasting CPU
cycles searching for RUN: lines that we'll never find.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36059 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-15 07:38:21 +00:00
Reid Spencer
2b544beda3 For PR1319: 
Upgrade tests to work with new llvm.exp version of llvm_runtest.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36013 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-14 20:13:02 +00:00
Reid Spencer
69ccadd753 Use the llvm-upgrade program to upgrade llvm assembly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32115 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-02 04:23:10 +00:00
Chris Lattner
19e40ade3d Handle the unsigned form as well 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11739 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-23 06:37:33 +00:00
Chris Lattner
f4821745df Add a slight variant of test10 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11736 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-23 05:59:52 +00:00
Chris Lattner
1dda055e55 This multiply can be eliminated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11733 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-23 05:38:47 +00:00
Misha Brukman
e78760e179 Renamed as' => llvm-as', dis' => llvm-dis', link' => llvm-link'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8558 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-16 15:29:54 +00:00
Chris Lattner
53dce0c43f New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8487 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 22:23:48 +00:00
Chris Lattner
060c1f816c Remove usage of grep-not script 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6966 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-28 23:32:04 +00:00
Chris Lattner
ab1a525163 Fix testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6952 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-28 22:31:37 +00:00
Chris Lattner
d4c914f062 Add test for instcombine -1*X -> -X 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6905 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-25 17:10:34 +00:00
Chris Lattner
1b77300154 * Add testcases for associative operators 
* Add testcase for or ubyte, 255 which was broken before


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5735 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 22:43:56 +00:00
Chris Lattner
2bd37807d0 Modernize testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5732 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-03-10 19:44:01 +00:00
Chris Lattner
5640f33331 test for a variety of new transformations: 
* A & ~A == 0
  * A / (2^c) == A >> c  if unsigned
  * 0 / A == 0
  * 1.0 * A == A
  * A * (2^c) == A << c
  * A ^ ~A == -1
  * A | ~A == -1
  * 0 % X = 0
  * A % (2^c) == A & (c-1) if unsigned
  * A - (A & B) == A & ~B
  * -1 - A == ~A


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5588 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-18 19:28:47 +00:00
Chris Lattner
4a6e4b30b4 These tests should not run -dce pass to cleanup instcombine. 
If instcombine is making dead instructions, ALL that should be used is -die


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3221 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-02 19:27:58 +00:00
Chris Lattner
efc01f62c6 New test cases for mul folding 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2416 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 22:24:24 +00:00