6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-12 00:29:20 +00:00
Code Issues Projects Releases Wiki Activity
72,520 Commits 39 Branches 0 Tags 277 MiB
1add46ddfa
Commit Graph

22 Commits

Author SHA1 Message Date
Chris Lattner
1add46ddfa Carve out a place in instcombine to put transformations which work knowing that their 
result is non-zero.  Implement an example optimization (PR9814), which allows us to
transform:
  A / ((1 << B) >>u 2)
into:
  A >>u (B-2)

which we compile into:

_divu3:                                 ## @divu3
	leal	-2(%rsi), %ecx
	shrl	%cl, %edi
	movl	%edi, %eax
	ret

instead of:

_divu3:                                 ## @divu3
	movb	%sil, %cl
	movl	$1, %esi
	shll	%cl, %esi
	shrl	$2, %esi
	movl	%edi, %eax
	xorl	%edx, %edx
	divl	%esi, %eax
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131860 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-22 18:18:41 +00:00
Benjamin Kramer
23b02cd031 Use SimplifyDemandedBits on div instructions. 
This folds away silly stuff like (a&255)/1000 -> 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130614 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-30 18:16:00 +00:00
Benjamin Kramer
2f8e038b35 FileCheckize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130613 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-30 18:15:53 +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
Chris Lattner
b2ae9e34db implement PR2328. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51176 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 02:59:42 +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
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
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
Reid Spencer
1628cec4d7 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31195 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-26 06:15:43 +00:00
Chris Lattner
fee906b482 new testcases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26002 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-05 07:52:47 +00:00
Chris Lattner
cb8e9c94ff Add testcases for simple things we can handle that occur now in vortex. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18837 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-12 21:40:22 +00:00
Chris Lattner
a2393502be New testcasses for divides that can be eliminated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16587 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-29 17:37:07 +00:00
Chris Lattner
46c4dcde44 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16548 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-28 18:21:01 +00:00
Chris Lattner
db05858ba1 Add a new testcase for X/-1, fix bug that prevented tests from running right 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13171 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-26 14:01:47 +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
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
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
07928ef7f5 modernize testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5586 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-02-18 19:16:45 +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
97555b59b3 New testcase so I don't forget about this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2478 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 05:35:20 +00:00