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22 Commits

Author SHA1 Message Date
Dan Gohman
6aff5b94ff Make BasicAliasAnalysis a normal AliasAnalysis implementation which 
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.

Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.

Update tests to explicitly request -basicaa.

llvm-svn: 116720
 2010-10-18 18:04:47 +00:00
Owen Anderson
4373b4516b Generalize MemCpyOpt's handling of call slot forwarding to function properly when the call slot 
forwarding is implemented with a load/store pair rather than a memcpy.

llvm-svn: 116637
 2010-10-15 22:52:12 +00:00
Mon P Wang
484bbe6aa9 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100304
 2010-04-04 03:10:48 +00:00
Mon P Wang
0ccf050ca3 Revert r100191 since it breaks objc in clang 
llvm-svn: 100199
 2010-04-02 18:43:02 +00:00
Mon P Wang
a01350755e Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100191
 2010-04-02 18:04:15 +00:00
Bob Wilson
aae933cc81 Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots. 
llvm-svn: 99948
 2010-03-30 22:27:04 +00:00
Mon P Wang
9351ea594a Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, 
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.

llvm-svn: 99928
 2010-03-30 20:55:56 +00:00
Kenneth Uildriks
e711736014 Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 
llvm-svn: 85900
 2009-11-03 15:29:06 +00:00
Dan Gohman
ec42afc1dc When extending a memset range past the front, set the alignment of the 
memset region to the alignment of the new start address.

llvm-svn: 81810
 2009-09-14 23:39:10 +00:00
Dan Gohman
205b641954 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.

llvm-svn: 81537
 2009-09-11 18:01:28 +00:00
Dan Gohman
c95df8b6d8 Use opt -S instead of piping bitcode output through llvm-dis. 
llvm-svn: 81257
 2009-09-08 22:34:10 +00:00
Dan Gohman
8d84372836 Change these tests to feed the assembly files to opt directly, instead 
of using llvm-as, now that opt supports this.

llvm-svn: 81226
 2009-09-08 16:50:01 +00:00
Chris Lattner
ee1d1d3173 Fix PR4882, by making MemCpyOpt not dereference removed stores to get the 
context for the newly created operations.
 
Patch by Jakub Staszak!

llvm-svn: 81175
 2009-09-08 00:27:14 +00:00
Chris Lattner
2c2c37b2b1 enhance memcpy opt to turn memmoves into memcpy when the src/dest 
don't alias.  Remove an old and poorly reduced testcase that fails
with this transform for reasons unrelated to the original test.

llvm-svn: 80693
 2009-09-01 17:56:32 +00:00
Dan Gohman
5f6f8101d5 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

llvm-svn: 72897
 2009-06-04 22:49:04 +00:00
Owen Anderson
7700de3137 Fix two issues that Eli Friedman pointed out, where would misoptimized code like: 
char a[200];
init(a, a+200);

OR

int a[200];
char* b = (char*)a;
char* c = (char*)a;
foo(b, c);

llvm-svn: 51850
 2008-06-01 22:26:26 +00:00
Owen Anderson
d194f76cb4 Test for PR2401 
llvm-svn: 51849
 2008-06-01 21:55:55 +00:00
Gabor Greif
807c2df887 sabre brings to my attention that the 'tr' suffix is also obsolete 
llvm-svn: 51349
 2008-05-20 21:00:03 +00:00
Gabor Greif
d8a4dbb5da Rename the last test with .llx extension to .ll, resolve duplicate test by renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too. 
llvm-svn: 51328
 2008-05-20 19:52:04 +00:00
Owen Anderson
2caa79ae70 Fix a bug in memcpyopt where the memcpy-memcpy transform was never being applied because 
we were checking for it in the wrong order.  This caused a miscompilation because the
return slot optimization assumes that the call it is dealing with is NOT a memcpy.

llvm-svn: 50444
 2008-04-29 21:26:06 +00:00
Owen Anderson
bc6046416f Refactor memcpyopt based on Chris' suggestions. Consolidate several functions 
and simplify code that was fallout from the separation of memcpyopt and gvn.

llvm-svn: 50034
 2008-04-21 07:45:10 +00:00
Owen Anderson
ca7e0e21f3 Factor a bunch of functionality related to memcpy and memset transforms out of 
GVN and into its own pass.

llvm-svn: 49419
 2008-04-09 08:23:16 +00:00