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114 Commits

Author SHA1 Message Date
Nuno Lopes
ad40c0a425 revert my previous patches that introduced an additional parameter to the objectsize intrinsic. 
After a lot of discussion, we realized it's not the best option for run-time bounds checking

llvm-svn: 157255
 2012-05-22 15:25:31 +00:00
Joel Jones
f1c120e9ef FileCheck-ify, apropos of nothing 
llvm-svn: 157051
 2012-05-18 16:24:01 +00:00
David Majnemer
a9330fe553 Teach SimplifyLibCalls about stpcpy. 
llvm-svn: 156815
 2012-05-15 11:46:21 +00:00
Nuno Lopes
01547b3ad2 change the objectsize intrinsic signature: add a 3rd parameter to denote the maximum runtime performance penalty that the user is willing to accept. 
This commit only adds the parameter. Code taking advantage of it will follow.

llvm-svn: 156473
 2012-05-09 15:52:43 +00:00
Joe Groff
246034465c FileCheckify, un-XFAIL SimplifyLibCalls/floor test 
Fixes build on MSVC

llvm-svn: 154970
 2012-04-18 00:36:07 +00:00
Joe Groff
3a940250bf Move win32 SimplifyLibcall test under Transforms 
llvm-svn: 154967
 2012-04-18 00:07:45 +00:00
Eli Bendersky
924f9a671d Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 
Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.

llvm-svn: 150664
 2012-02-16 06:28:33 +00:00
Nick Lewycky
a8e84fb56b Turn cos(-x) into cos(x). Patch by Alexander Malyshev! 
llvm-svn: 147291
 2011-12-27 18:25:50 +00:00
Benjamin Kramer
f1fd6e394d Give string constants generated by IRBuilder private linkage. 
Fixes PR11640.

llvm-svn: 147144
 2011-12-22 14:22:14 +00:00
Joerg Sonnenberger
45c4164166 Only replace fwrite with fputc, if the return value is unused. 
llvm-svn: 146411
 2011-12-12 20:18:31 +00:00
Eli Friedman
489c0ff4a4 Add support for custom names for library functions in TargetLibraryInfo. Add a custom name for fwrite and fputs on x86-32 OSX. Make SimplifyLibCalls honor the custom 
names for fwrite and fputs.

Fixes <rdar://problem/9815881>.

llvm-svn: 144876
 2011-11-17 01:27:36 +00:00
Benjamin Kramer
594ee77964 SimplifyLibCalls: Use IRBuilder.CreateGlobalString when creating a string for printf->puts, which correctly sets the unnamed_addr bit on the resulting GlobalVariable. 
Fixes PR11264.

llvm-svn: 143289
 2011-10-29 19:43:31 +00:00
Nick Lewycky
462098824f "@string = constant i8 0" is a value i8* string of length zero. Analyze that 
correctly in GetStringLength, fixing PR11181!

llvm-svn: 142558
 2011-10-20 00:34:35 +00:00
Lang Hames
e7594abd87 Fixed quoting on default data layout option. 
llvm-svn: 142286
 2011-10-17 21:54:43 +00:00
Eli Friedman
3e3aecbc2c PR11061: Make simplifylibcalls fold strcmp("", x) correctly. 
While I'm here, fix the related issue with strncmp, add some actual tests for strcmp and strncmp, and start using StringRef::compare for constant folding instead of using strcmp/strncmp so that the optimized IR isn't dependent on the host's implementation of strcmp.

llvm-svn: 141227
 2011-10-05 22:27:16 +00:00
Benjamin Kramer
547b6c5ecd Stop emitting instructions with the name "tmp" they eat up memory and have to be uniqued, without any benefit. 
If someone prefers %tmp42 to %42, run instnamer.

llvm-svn: 140634
 2011-09-27 20:39:19 +00:00
Eli Friedman
02e737b08e Move "atomic" and "volatile" designations on instructions after the opcode 
of the instruction.

Note that this change affects the existing non-atomic load and store
instructions; the parser now accepts both forms, and the change is noted
in the release notes.

llvm-svn: 137527
 2011-08-12 22:50:01 +00:00
Chris Lattner
80ed9dc9e5 rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 
for pre-2.9 bitcode files.  We keep x86 unaligned loads, movnt, crc32, and the
target indep prefetch change.

As usual, updating the testsuite is a PITA.

llvm-svn: 133337
 2011-06-18 06:05:24 +00:00
Devang Patel
13f8c7d48e Preserve line number information while simplifying libcalls. 
llvm-svn: 127362
 2011-03-09 21:27:52 +00:00
Richard Osborne
af52c52569 Optimize fprintf -> iprintf if there are no floating point arguments 
and siprintf is available on the target.

llvm-svn: 126940
 2011-03-03 14:20:22 +00:00
Richard Osborne
2dfb888392 Optimize sprintf -> siprintf if there are no floating point arguments 
and siprintf is available on the target.

llvm-svn: 126937
 2011-03-03 14:09:28 +00:00
Richard Osborne
815de536e5 Optimize printf -> iprintf if there are no floating point arguments 
and iprintf is available on the target. Currently iprintf is only
marked as being available on the XCore.

llvm-svn: 126935
 2011-03-03 13:17:51 +00:00
Dan Gohman
6564ca0c23 Delete obsolete test. 
llvm-svn: 126680
 2011-02-28 19:58:14 +00:00
Daniel Dunbar
210ce0feb5 SimplifyLibCalls: Add missing legalize check on various printf to puts and 
putchar transforms, their return values are not compatible.

llvm-svn: 125442
 2011-02-12 18:19:57 +00:00
Daniel Dunbar
76c95562bc tests: FileCheckize 
llvm-svn: 125441
 2011-02-12 18:19:53 +00:00
Dan Gohman
93dc2b808f Revert r64460. strtol and friends cannot be marked readonly, even with 
a null endptr argument, because they may write to errno.

This fixes a seflhost miscompile observed on Linux targets when TBAA
was enabled.

llvm-svn: 122014
 2010-12-17 01:09:43 +00:00
Anders Carlsson
e3ea1cba79 Add a puts optimization that converts puts() to putchar('\n'). 
llvm-svn: 120398
 2010-11-30 06:19:18 +00:00
Anders Carlsson
77e9892afd Fix a typo. 
llvm-svn: 120394
 2010-11-30 06:03:55 +00:00
Anders Carlsson
631d06bbce Rename this test to FPuts.ll since it actually tests fputs. 
llvm-svn: 120393
 2010-11-30 05:59:26 +00:00
Benjamin Kramer
e6840ef4b3 Fix some broken CHECK lines. 
llvm-svn: 120332
 2010-11-29 22:34:55 +00:00
NAKAMURA Takumi
959807fa37 test/Transforms/SimplifyLibCalls/floor.ll: Mark as XFAIL:win32 due to lack of nearbyintf on MSVC. [PR8466] 
llvm-svn: 117529
 2010-10-28 06:46:04 +00:00
Benjamin Kramer
2b76c66fd6 Add constant folding for strspn and strcspn to SimplifyLibCalls. 
llvm-svn: 115116
 2010-09-30 00:58:35 +00:00
Benjamin Kramer
38d22f69fc Add strpbrk folding to SimplifyLibCalls. 
llvm-svn: 115111
 2010-09-29 23:52:12 +00:00
Benjamin Kramer
8e861d7eee Simplify the loop in StrChrOptimizer. FileCheckize test. 
llvm-svn: 115095
 2010-09-29 22:29:12 +00:00
Benjamin Kramer
824645abc9 Teach SimplifyLibCalls how to optimize strrchr. 
llvm-svn: 115091
 2010-09-29 21:50:51 +00:00
Rafael Espindola
a20e2dfe86 Make sure that simplify libcalls does not replace a call with one calling 
convention with a new call with a different calling convention.

llvm-svn: 106134
 2010-06-16 19:34:01 +00:00
Benjamin Kramer
a13bd20396 simplify-libcalls: fold strncmp(x, y, 1) -> memcmp(x, y, 1) 
The memcmp will be optimized further and even the pathological case
'strstr(x, "x") == x' generates optimal code now.

llvm-svn: 106097
 2010-06-16 10:30:29 +00:00
Benjamin Kramer
1118860e3a simplify-libcalls: fold strstr(a, b) == a -> strncmp(a, b, strlen(b)) == 0 
llvm-svn: 106047
 2010-06-15 21:34:25 +00:00
Nick Lewycky
aee2632be3 The memcpy intrinsic only takes i8* for %src and %dst, so cast them to that 
first. Fixes PR7265.

llvm-svn: 105206
 2010-05-31 06:16:35 +00:00
Benjamin Kramer
9439084cea Properly promote operands when optimizing a single-character memcmp. 
llvm-svn: 104648
 2010-05-25 22:53:43 +00:00
Mon P Wang
c576ee9040 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
999c1b927b Revert r100191 since it breaks objc in clang 
llvm-svn: 100199
 2010-04-02 18:43:02 +00:00
Mon P Wang
a972ab8564 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
6f7fd28824 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
7460571381 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
Evan Cheng
d9e822345c Teach simplify libcall to transform __strcpy_chk to __memcpy_chk to enable optimizations down stream. 
llvm-svn: 99282
 2010-03-23 15:48:04 +00:00
Eric Christopher
a7fb58f5f5 Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub 
out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.

llvm-svn: 97875
 2010-03-06 10:50:38 +00:00
Evan Cheng
d214ed0e75 Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size. 
llvm-svn: 97828
 2010-03-05 20:59:47 +00:00
Eric Christopher
d86233c118 Recommit this, looks like it wasn't the cause. 
llvm-svn: 95165
 2010-02-03 00:21:58 +00:00
Eric Christopher
e67d01a9a8 Hopefully temporarily revert this. 
llvm-svn: 95154
 2010-02-02 23:01:31 +00:00