Commit Graph

38 Commits

Author SHA1 Message Date
Eli Friedman
694488f477 Add a small transform: transform -(X<<Y) to (-X<<Y) when the shift has a single
use and X is free to negate.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94941 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-31 02:30:23 +00:00
Chris Lattner
464dc81803 just remove this xform which is subsumed by others.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92775 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 21:16:30 +00:00
Chris Lattner
85c1c964dc generalize the pointer difference optimization to handle
a constantexpr gep on the 'base' side of the expression.
This completes comment #4 in PR3351, which comes from
483.xalancbmk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92402 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 22:42:29 +00:00
Chris Lattner
f2ebc682d1 teach instcombine to optimize pointer difference idioms involving constant
expressions.  This is a step towards comment #4 in PR3351.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92401 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 22:29:12 +00:00
Chris Lattner
092543ca71 move two functions up higher in the file. Delete a useless argument
to EmitGEPOffset.  

Implement some new transforms for optimizing 
subtracts of two pointer to ints into the same vector.  This happens
for C++ iterator idioms for example, stringmap takes a const char*
that points to the start and end of a string.  Once inlined, we want
the pointer difference to turn back into a length.

This is rdar://7362831.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86021 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-04 08:05:20 +00:00
Chris Lattner
6a4ab1e426 filecheckize this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-04 07:57:05 +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
Bill Wendling
e1196d6d3e Instcombine was illegally transforming -X/C into X/-C when either X or C
overflowed on negation. This commit checks to make sure that neithe C nor X
overflows. This requires that the RHS of X (a subtract instruction) be a
constant integer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60275 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30 03:42:12 +00:00
Chris Lattner
7d2cbd2d43 Implement PR2298. This transforms:
~x < ~y --> y < x
   -x == -y --> x == y



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50882 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 05:19:28 +00:00
Tanya Lattner
ec9a35a6f9 Remove llvm-upgrade and update test cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47793 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-01 09:15:35 +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
e3ff5ada8a For PR761:
Remove "target endian/pointersize" or add "target datalayout" to make
the test parse properly or set the datalayout because defaults changes.

For PR645:
Make global names use the @ prefix.

For llvm-upgrade changes:
Fix test cases or completely remove use of llvm-upgrade for test cases
that cannot survive the new renaming or upgrade capabilities.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33533 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-26 08:25:06 +00:00
Reid Spencer
7e6b4f7a6d For PR1070:
Tweak the RUN: lines of these tests to accommodate the renaming of
variables done by llvm-upgrade. The renaming occurs as a result of avoiding
name collisons for collapsed type planes. Conflicting names have a .u
(unsigned) or .s (signed) suffix added. This patch updates the grep
expression to accommodate the new names.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32815 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-02 05:55:05 +00:00
Reid Spencer
eacb7020ec For PR950:
Update the test suite to accommodate the change from signed integer types
to signless integer types. The changes were of only a few kinds:

1. Make sure llvm-upgrade is run on the source which does the bulk of the
   changes automatically.

2. Change things like "grep 'int'" to "grep 'i32'"

3. In several tests bitcasting caused the same name to be reused in the
   same type plane. These had to be manually fixed. The fix was (generally)
   to leave the bitcast and provide the instruction with a new name. This
   should not affect the semantics of the test. In a few cases, the
   bitcasts were known to be superfluous and irrelevant to the test case
   so they were removed.

4. One test case uses a bytecode file which needed to be updated to the
   latest bytecode format.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32789 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-31 06:02:00 +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
e047eedc04 New testcases
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26393 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-27 01:43:02 +00:00
Chris Lattner
7c52702201 new test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21137 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-07 16:41:45 +00:00
Chris Lattner
706759e8c9 New testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17703 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13 19:49:39 +00:00
Chris Lattner
23e2563226 New testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16862 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-09 02:50:01 +00:00
Chris Lattner
24c0532f50 New testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16768 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-06 15:07:56 +00:00
Chris Lattner
f77afbb275 New testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14636 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-06 07:00:11 +00:00
Chris Lattner
eb416e85bc Oh right, casts can interfere. Test this too
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12354 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-13 00:11:38 +00:00
Chris Lattner
99780ce874 new testcases
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12352 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-12 23:52:51 +00:00
Chris Lattner
efd74a0159 The instruction combining pass removes dead instructions, there is no need
to run the die pass after it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11942 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-28 05:26:06 +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
545513918a Reorganize tests because we no longer cannonicalize X != 0 -> cast X to bool
In fact, we plan to eliminate cast to bool entirely.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7805 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-13 05:27:57 +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
c6cab24151 Convert scripts from using explicit control flow to use the new grep-not script
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6955 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-28 22:44:42 +00:00
Chris Lattner
533741a764 Add testcases for negated multiplies
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5739 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-10 23:22:50 +00:00
Chris Lattner
fa59079c3c Add new testcases
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5591 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-18 19:55:31 +00:00
Chris Lattner
e14e50d76b Modernize testcases
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5589 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-18 19:43:21 +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
8c7333e17c Fix broken testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2565 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-09 01:28:30 +00:00
Chris Lattner
d086fb20eb Add two new patterns that instcombine should or does handle
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2563 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-08 23:15:01 +00:00
Chris Lattner
c1bfd13c0a Add testcase for -(-A)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2488 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-06 16:19:16 +00:00
Chris Lattner
829b79dd8c More testcases I don't want to forget about
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2480 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-06 05:51:26 +00:00