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102 Commits

Author SHA1 Message Date
Chris Lattner
7a2bdde0a0 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 05:18:47 +00:00
Frits van Bommel
6208610fd6 Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-27 14:26:13 +00:00
Anders Carlsson
6475d9434f When loading from a constant, fold inttoptr if the integer type and the resulting pointer type both have the same size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124987 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-06 20:11:56 +00:00
Nick Lewycky
175e7aec13 Add the select optimization recently added to instcombine to constant folding. 
This is the one where one of the branches of the select is another select on
the same condition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124547 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 20:35:06 +00:00
Nick Lewycky
4c93a0f092 Add a constant folding of casts from zero to zero. Fixes PR9011! 
While here, I'd like to complain about how vector is not an aggregate type
according to llvm::Type::isAggregateType(), but they're listed under aggregate
types in the LangRef and zero vectors are stored as ConstantAggregateZero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123956 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-21 01:12:09 +00:00
Chandler Carruth
15ed90c859 Teach constant folding to perform conversions from constant floating 
point values to their integer representation through the SSE intrinsic
calls. This is the last part of a README.txt entry for which I have real
world examples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123206 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 01:07:24 +00:00
Chandler Carruth
f7b0047f5f FileCheck-ize a test, and move a no-longer calling test case to another 
file and make it actually test something...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123205 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 01:07:20 +00:00
NAKAMURA Takumi
5c083b174e test/Transforms/ConstProp/logicaltest.ll: FileCheck-ize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 03:58:56 +00:00
Frits van Bommel
3ee0af3584 Teach ConstantFoldInstruction() how to fold insertvalue and extractvalue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120316 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-29 20:36:52 +00:00
Chris Lattner
6857373f44 rename test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119033 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-14 07:03:49 +00:00
Chris Lattner
2fe9b6a125 filecheckize, remove an old and useless test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119032 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-14 07:03:38 +00:00
Chris Lattner
961e588e9d this test is pretty pointless and "propogation" isn't a word (or so Misha claims). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119031 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-14 07:02:03 +00:00
Chris Lattner
a5bbde8efd fix a bug I introduced, no idea how this didn't repro right. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116462 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:30:00 +00:00
Chris Lattner
15ea094474 hack to unbreak buildbots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116461 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:26:10 +00:00
Chris Lattner
eafc5cb80d add uadd_ov/usub_ov to apint, consolidate constant folding 
logic to use the new APInt methods.  Among other things this
implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold

which comes from "clang -ftrapv", originally brought to my attention from PR8221.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116457 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 00:05:07 +00:00
Chris Lattner
042ff0358d remove some noise from tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 22:35:33 +00:00
Chris Lattner
b63127d435 fix PR6197 - infinite recursion in ipsccp due to block addresses 
evaluateICmpRelation wasn't handling blockaddress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-01 19:35:08 +00:00
Nick Lewycky
401f3258f6 Fix a crasher trying to fold each element in a comparison between two vectors 
if one of the vectors didn't have elements (such as undef). Fixes PR 6096.

Fix an issue in the constant folder where fcmp (<2 x %ty>, <2 x %ty>) would
have <2 x i1> type if constant folding was successful and i1 type if it wasn't.
This exposed a related issue in the bitcode reader.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94069 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-21 07:03:21 +00:00
Chris Lattner
b31189f262 fix PR5978 by peeling the loop so that we avoid shifting the 
result int by 8 for the first byte.  While normally harmless,
if the result is smaller than a byte, this shift is invalid.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93018 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-08 19:02:23 +00:00
Chris Lattner
44a7a380aa Fix PR5551 by not ignoring the top level constantexpr when 
folding a load from constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90545 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 06:29:29 +00:00
Edward O'Callaghan
d2d438e58d Convert a few tests to FileCheck for PR5307. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85171 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 22:52:03 +00:00
Chris Lattner
c5af649758 fix PR5287, a serious regression from my previous patches. Thanks to 
Duncan for the nice tiny testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84992 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 05:22:15 +00:00
Chris Lattner
17f0cd3cc1 teach libanalysis to simplify vector loads with bitcast sources. This 
implements something out of Target/README.txt producing:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	LCPI1_0, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

instead of:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	_b, %xmm0
	mulpd	LCPI1_0, %xmm0
	addpd	_a, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84942 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 06:57:37 +00:00
Chris Lattner
739208a790 enhance FoldReinterpretLoadFromConstPtr to handle loads of up to 32 
bytes (i256).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84941 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 06:50:36 +00:00
Chris Lattner
fe8c7c807c teach libanalysis to fold int and fp loads from almost arbitrary 
non-type-safe constant initializers.  This sort of thing happens
quite a bit for 4-byte loads out of string constants, unions, 
bitfields, and an interesting endianness check from sqlite, which
is something like this:

const int sqlite3one = 1;
# define SQLITE_BIGENDIAN    (*(char *)(&sqlite3one)==0)
# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)

all of these macros now constant fold away.

This implements PR3152 and is based on a patch started by Eli, but heavily
modified and extended.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84936 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 06:23:49 +00:00
Chris Lattner
59c4eba416 Teach vm core to more aggressively fold 'trunc' constantexprs, 
allowing it to simplify the crazy constantexprs in the testcases
down to something sensible.  This allows -std-compile-opts to
completely "devirtualize" the pointers to member functions in
the testcase from PR5176.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84368 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 21:53:27 +00:00
Chris Lattner
5e5c4d3d5a remove # uses from FileCheck lines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84367 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 21:51:19 +00:00
Chris Lattner
c812f79fb8 rename test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84364 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 21:31:19 +00:00
Evan Phoenix
1614e50d9f Extend ConstantFolding to understand signed overflow variants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83338 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-05 22:53:52 +00:00
Chris Lattner
e65cd40ab9 teach the optimizer how to constant fold uadd/usub intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83295 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-05 05:26:04 +00:00
Nick Lewycky
149cbc2a24 Peer through zext and sext to eliminate them when it is safe to do so. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82389 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 07:31:25 +00:00
Nick Lewycky
85958b059d Fold 'icmp eq (icmp), true' into an xor(icmp). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82386 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 07:21:39 +00:00
Nick Lewycky
04d7eed1d5 Rewrite this check so that it checks what it's supposed to and doesn't use 
CHECK-NOT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82383 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 07:00:24 +00:00
Nick Lewycky
3105ebfaf7 Teach the constant folder how to not a cmpinst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82378 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 06:24:51 +00:00
Nick Lewycky
55a722bf6a Try turning icmp(bitcast(x), bitcast(y)) into icmp(bitcast(bitcast(x)), y) in 
the hopes that the two bitcasts will merge.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82371 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 05:48:50 +00:00
Nick Lewycky
f4d1882743 Teach the constant folder how to handle a few simple i1 cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82340 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-20 00:04:02 +00:00
Chris Lattner
813fc422aa convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81848 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-15 06:34:29 +00:00
Dan Gohman
f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-11 18:01:28 +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
Daniel Dunbar
31dc49d5ab Eliminate some Tclisms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81081 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-05 11:34:46 +00:00
Chris Lattner
25f1992cf5 Fix month. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80769 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-02 06:34:22 +00:00
Chris Lattner
f19f9347b8 fix PR4848 an infinite loop when indexing down through a recursive gep 
and we get the original pointer type.  This doesn't mean that we're
at the first pointer being indexed.  Correct the predicate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-02 05:35:45 +00:00
Nick Lewycky
7f6aa2b162 Remove the vicmp and vfcmp instructions. Because we never had a release with 
these instructions, no autoupgrade or backwards compatibility support is
provided.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74991 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-08 03:04:38 +00:00
Nick Lewycky
e47f59db44 Expand this test to handle more cases (remainder and shifts) of zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73839 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-21 01:56:41 +00:00
Chris Lattner
1db6866147 implement PR4424: 0/x is always 0 for integer division. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73835 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-21 01:15:55 +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
Chris Lattner
868510328f apply Eli's patch for PR2165 and provide a testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57625 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-16 05:26:51 +00:00
Chris Lattner
fea85c46c0 Fix a case where vector comparison constant folding would cause an 
infinite recursion.  part of PR2529


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53383 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 00:29:28 +00:00
Chris Lattner
330e7e4d25 elementwise comparison of vector constants was completely wrong. Fix 
it for PR2529


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53380 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-10 00:08:17 +00:00