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Author SHA1 Message Date
Chris Lattner
80e8b506b8 rewrite the memset_pattern pattern generation stuff to accept any 2/4/8/16-byte 
constant, including globals.  This makes us generate much more "pretty" pattern
globals as well because it doesn't break it down to an array of bytes all the
time.

This enables us to handle stores of relocatable globals.  This kicks in about
48 times in 254.gap, giving us stuff like this:

@.memset_pattern40 = internal constant [2 x %struct.TypHeader* (%struct.TypHeader*, %struct.TypHeader*)*] [%struct.TypHeader* (%struct.TypHeader*, %struct
.TypHeader*)* @IsFalse, %struct.TypHeader* (%struct.TypHeader*, %struct.TypHeader*)* @IsFalse], align 16

...
  call void @memset_pattern16(i8* %scevgep5859, i8* bitcast ([2 x %struct.TypHeader* (%struct.TypHeader*, %struct.TypHeader*)*]* @.memset_pattern40 to i8*
), i64 %tmp75) nounwind



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126044 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 19:56:44 +00:00
Chris Lattner
41bfbb0a87 Stores of null pointers should turn into memset, we weren't recognizing 
them as splat values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126041 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 19:35:49 +00:00
Chris Lattner
3a393728a6 Implement rdar://9009151, transforming strided loop stores of 
unsplatable values into memset_pattern16 when it is available
(recent darwins).  This transforms lots of strided loop stores
of ints for example, like 5 in vpr:

  Formed memset:   call void @memset_pattern16(i8* %4, i8* getelementptr inbounds ([16 x i8]* @.memset_pattern9, i32 0, i32 0), i64 %tmp25)
    from store to: {%3,+,4}<%11> at:   store i32 3, i32* %scevgep, align 4, !tbaa !4




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126040 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 19:31:39 +00:00
Jeffrey Yasskin
9bb83e4f48 Add the PARSE_ARGUMENTS CMake macro to LLVM so I can use it to clean 
up add_clang_unittest's calling convention.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126031 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 18:01:15 +00:00
Argyrios Kyrtzidis
38297f5f76 Allow getting the address of the value in a PointerUnion or PointerIntPair if one is 
confident enough that he knows what he is doing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126019 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 03:55:58 +00:00
Eric Christopher
dd6e40a4f4 Fix typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126018 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 03:19:09 +00:00
Ted Kremenek
3f912adeae Add ImmutableMap methods 'manualRetain()', 'manualRelease()', and 'getRootWithoutRetain()' to help more aggressively reclaim memory in the static analyzer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126011 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 01:59:21 +00:00
Devang Patel
5bc9fec7ec Do not emit empty DW_TAG_lexical_block DIEs. In one test case, size of debug info reduced by almost 7%. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126009 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 01:31:27 +00:00
Devang Patel
fe19e3f74c DIE numbers do not add any value in this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126008 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 01:28:37 +00:00
Jakob Stoklund Olesen
1b847deb26 Give SplitAnalysis a VRM member to access VirtRegMap::getOriginal(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126005 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 00:53:42 +00:00
Joerg Sonnenberger
4b19c9865e Avoid dangling else warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126004 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 00:43:45 +00:00
Jakob Stoklund Olesen
0eeca44046 Missed member rename for naming convention. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126003 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 00:42:33 +00:00
Jakob Stoklund Olesen
fd38917d4d This method belonged in VirtRegMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126002 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 00:38:43 +00:00
Jakob Stoklund Olesen
a2ebf60ef2 Separate timers for local and global splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126001 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 00:38:40 +00:00
Mikhail Glushenkov
75dab009eb Make "-opt [-emit-llvm]" work for .ll files. 
Patch by Kaelyn Uhrain!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126000 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-19 00:33:27 +00:00
Devang Patel
dc8c3fdcf1 Provide enums to build complex address calucation expressions. 
(This is infact direct copy from DIFactory, which is disappearing soon.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125989 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 23:28:53 +00:00
Devang Patel
f3a3214049 Remove unused tag. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125988 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 23:23:09 +00:00
Devang Patel
29020a3b45 These tags are now covered by dwarf::TagString(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125987 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 23:13:40 +00:00
Devang Patel
98d9f5d90d Provide tag strings for llvm specific tags. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125986 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 23:06:29 +00:00
Devang Patel
a778f5c798 Do not lose debug info of an inlined function argument even if the argument is only used through GEPs. 
This time with a fix that avoids using invalidated DenseMap iterator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125984 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:43:42 +00:00
Chris Lattner
0160c8a8bc Now that -loop-idiom uses TargetLibraryInfo properly, it doesn't 
need to be pulled out of the pass manager when the user specifies 
-fno-builtin.  It can intelligently determine which libcalls to
optimize based on what is enabled in TargetLibraryInfo.  This 
allows -fno-builtin-foo to work someday.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125981 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:36:36 +00:00
Jakob Stoklund Olesen
e324f6e05f Use VirtRegMap's Virt2SplitMap to keep track of the original live range before splitting. 
All new virtual registers created for spilling or splitting point back to their original.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125980 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:35:20 +00:00
Chris Lattner
188a7e00e7 add a way to disable all builtins, wire it up to opt's -disable-simplifylibcalls flag. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125978 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:34:03 +00:00
Chris Lattner
c19175c9d8 Make loop-idiom use TargetLibraryInfo to determine whether it is allowed 
to hack on memset, memcpy etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125974 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:22:15 +00:00
Chris Lattner
398c0d8b74 add memset and memcpy, though they are always available for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125973 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:21:24 +00:00
Chris Lattner
a84b2ffac5 rearrange some comments, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125972 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:21:07 +00:00
Chris Lattner
2a66acafaf Have opt set up a specific TargetLibraryInfo for modules 
with a triple.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125970 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:13:01 +00:00
Oscar Fuentes
9a89894537 CMake: updated list of tblgen source files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125969 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:06:23 +00:00
Oscar Fuentes
6d857ca4d7 Move library stuff out of the toplevel CMakeLists.txt file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125968 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:06:14 +00:00
Jakob Stoklund Olesen
ba05c01dab Add VirtRegMap::rewrite() and use it in the new register allocators. 
The rewriter works almost identically to -rewriter=trivial, except it also
eliminates any identity copies.

This makes the new register allocators independent of VirtRegRewriter.cpp which
will be going away at the same time as RegAllocLinearScan.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125967 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 22:03:18 +00:00
Owen Anderson
d8c87888a7 Add FixedLenDecoderEmitter, the skeleton of a new disassembler emitter for fixed-length instruction encodings. 
A major part of its (eventual) goal is to support a much cleaner separation between disassembly callbacks
provided by the target and the disassembler emitter itself, i.e. not requiring hardcoding of knowledge in tblgen
like the existing disassembly emitters do.

The hope is that some day this will allow us to replace the existing non-Thumb ARM disassembler and remove
some of the hacks the old one introduced to tblgen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125966 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 21:51:29 +00:00
Chris Lattner
ce99120084 introduce a new TargetLibraryInfo pass, which transformations can use to 
query about available library functions.  For now this just has 
memset_pattern16, which exists on darwin, but it can be extended for a 
bunch of other things in the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125965 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 21:50:34 +00:00
Owen Anderson
d78b789110 Revert r125956, which broke the build if you _don't_ have lldb checked out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125964 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 21:33:23 +00:00
Bill Wendling
5028249fab Reapply r114997 now that the buildbots have been updated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125960 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 21:12:58 +00:00
Stephen Wilson
ebdf0f9e0c This patch lets LLDB build as an LLVM subproject. LLDB is not built in 
parallel with the rest of the tools directory as it depends on Clang.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125956 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 20:50:33 +00:00
Bruno Cardoso Lopes
8bba1a5ef0 Fix style and a typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125949 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 19:49:06 +00:00
Bruno Cardoso Lopes
584bf7bb03 Add assembly parsing support for "msr" and also fix its encoding. Also add 
testcases for the disassembler to make sure it still works for "msr".



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125948 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 19:45:59 +00:00
Chris Lattner
6309b3e9be improve support for OpenBSD, patch by Amit Kulkarni! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125943 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 17:04:56 +00:00
Rafael Espindola
1e09e5b979 Expose getTypeName to the C API. Patch by Patrick Walton. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125845 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 16:35:37 +00:00
Duncan Sands
39a7de72c8 Add some transforms of the kind X-Y>X -> 0>Y which are valid when there is no 
overflow.  These subsume some existing equality transforms, so zap those.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125843 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 16:25:37 +00:00
Benjamin Kramer
5c862575d5 The objectsize intrinsic doesn't access any memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125842 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 16:11:40 +00:00
Chris Lattner
c1e4ce6044 add a poor division by constant case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125832 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 05:35:49 +00:00
Chris Lattner
67982da351 add a testcase for r125827 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125831 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 05:05:01 +00:00
Cameron Zwarich
1646953538 Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125830 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 04:58:10 +00:00
Chris Lattner
78f7a25f98 prevent jump threading from merging blocks when their address is 
taken (and used!).  This prevents merging the blocks (invalidating
the block addresses) in a case like this:

#define _THIS_IP_  ({ __label__ __here; __here: (unsigned long)&&__here; })

void foo() {
  printf("%p\n", _THIS_IP_);
  printf("%p\n", _THIS_IP_);
  printf("%p\n", _THIS_IP_);
}

which fixes PR4151.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125829 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 04:43:06 +00:00
Chris Lattner
13fb0db0c2 hoist GlobalValue::removeDeadConstantUsers up to being a method on Constant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125828 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 04:41:42 +00:00
Chris Lattner
f5ebfb0d28 Don't unroll loops whose header block's address is taken. 
This is part of a futile attempt to not "break" bizzaro
code like this:

 l1:
  printf("l1: %p\n", &&l1);
  ++x;

  if( x < 3 ) goto l1;


Previously we'd fold &&l1 to 1, which is fine per our semantics
but not helpful to the user.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125827 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 04:25:21 +00:00
Peter Collingbourne
90d238ce8a Make -disable-simplify-libcalls work with -std-compile-opts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125824 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 02:59:21 +00:00
Joerg Sonnenberger
5ad596f9d2 Recognize monitor/mwait with explicit register arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125805 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 00:48:11 +00:00
Argyrios Kyrtzidis
c788f44642 Check the errorcode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125804 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-18 00:47:07 +00:00