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57 Commits

Author SHA1 Message Date
Benjamin Kramer
a38019a3de Teach SimplifyLibCalls to fold memcmp calls with constant arguments. 
llvm-svn: 86141
 2009-11-05 17:44:22 +00:00
Dan Gohman
0a396aa546 Fix SimplifyLibCalls to transfer attributes from callees rather than 
calls, since direct calls don't always reflect the attributes of their
callees.

llvm-svn: 82867
 2009-09-26 18:10:13 +00:00
Dan Gohman
8e056e8b9b I put the wrong rdar number in this test. 
llvm-svn: 82829
 2009-09-26 01:11:57 +00:00
Dan Gohman
d564cd42d9 Transform pow(x, 0.5) to (x == -inf ? inf : fabs(sqrt(x))), which is 
typically faster then doing a general pow.

llvm-svn: 82819
 2009-09-25 23:10:17 +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
Daniel Dunbar
a953c39b9e Eliminate uses of %prcontext. 
- I'd appreciate it if someone else eyeballs my changes to make sure I captured
   the intent of the test.

llvm-svn: 81083
 2009-09-05 11:35:16 +00:00
Chris Lattner
3ac0c58031 In C++, code is not allowed to call main. In C it is, this 
simplifylibcalls optimization is thus valid for C++ but not C.
It's not important enough to worry about for C++ apps, so just
remove it.

rdar://7191924

llvm-svn: 80887
 2009-09-03 05:19:59 +00:00
Dan Gohman
e3245061a9 Add targetdata strings to these tests, since SimplifyLibCalls uses 
TargetData to find the pointer size.

llvm-svn: 79490
 2009-08-19 23:18:49 +00:00
Dan Gohman
807652ac3a Fix SimplifyLibcalls and ValueTracking to check mayBeOverridden 
before performing optimizations based on constant string values.

llvm-svn: 79384
 2009-08-19 00:11:12 +00:00
Daniel Dunbar
89cb72a6bc Fix PR4645 which was fallout from the fix for PR4641. 
- Call RAUW to delete all instructions (this is a patch from Nick Lewycky).

llvm-svn: 77512
 2009-07-29 22:00:43 +00:00
Nick Lewycky
1961298b63 Just discard the output, no need to turn it back into text. 
llvm-svn: 77439
 2009-07-29 06:14:52 +00:00
Chris Lattner
e5f1099d05 don't dump .bc file to stdout, and simplify this to a trivial testcase. 
llvm-svn: 77436
 2009-07-29 05:32:07 +00:00
Nick Lewycky
e0524c1795 Bulk erasing instructions without RAUWing them is unsafe. Instead, break them 
into a new BB that has no predecessors.

llvm-svn: 77433
 2009-07-29 05:17:50 +00:00
Eli Friedman
7b1597133d Fix simplifylibcalls memset recognition to work on 64-bit platforms 
where int is 32 bits.

llvm-svn: 76293
 2009-07-18 08:34:51 +00:00
Chris Lattner
3a683c551f part of PR4405: disable a contentious optimization for 
strcmp -> memcmp when the lengths of the strings are unknown.

Patch by Nick Lewycky!

llvm-svn: 73751
 2009-06-19 04:17:36 +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
Chris Lattner
8ac63163fe fix PR4284, a bug in simplifylibcalls handling memcmp. Patch by 
Benjamin Kramer!

llvm-svn: 72625
 2009-05-30 18:43:04 +00:00
Chris Lattner
927ebd34e2 Fix PR4206 - crash in simplify lib calls 
llvm-svn: 71644
 2009-05-13 06:26:11 +00:00
Chris Lattner
f03202e76d add some optimizations for strncpy/strncat and factor some 
code.  Patch by Benjamin Kramer!

llvm-svn: 68885
 2009-04-12 05:06:39 +00:00
Ed Schouten
ff25f858fd Let the strcat optimizer return the pointer to the start of the buffer, 
instead of the place where it started to perform the string copy.

- PR3661
- Patch by Benjamin Kramer!

llvm-svn: 68443
 2009-04-06 13:06:48 +00:00
Nick Lewycky
0a8e13fd8b Mark strto* as readonly when the endptr is null. 
llvm-svn: 64460
 2009-02-13 17:08:33 +00:00
Nick Lewycky
7ec551cfad On strtod and friends, mark 'endptr' nocapture in the function prototype, and 
mark the first argument nocapture if endptr=NULL for each particular call.

llvm-svn: 64453
 2009-02-13 15:31:46 +00:00
Nick Lewycky
260e80bd90 Reapply r64300: 
Make sure the SCC pass manager initializes any contained
function pass managers.  Without this, simplify-libcalls
would add nocapture attributes when run on its own, but
not when run as part of -std-compile-opts or similar.

llvm-svn: 64443
 2009-02-13 07:15:53 +00:00
Bill Wendling
dfb5880317 Revert r64300 and r64301. These were causing the following errors respectively: 
During llvm-gcc bootstrap:

Undefined symbols:
  "llvm::FPPassManager::doFinalization(llvm::Module&)", referenced from:
      (anonymous namespace)::CGPassManager::doFinalization(llvm::CallGraph&, llvm::Module&)
        in libLLVMipa.a(CallGraphSCCPass.o)
  "llvm::FPPassManager::doInitialization(llvm::Module&)", referenced from:
      (anonymous namespace)::CGPassManager::doInitialization(llvm::CallGraph&, llvm::Module&)
        in libLLVMipa.a(CallGraphSCCPass.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[3]: *** [/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore.roots/llvmCore~obj/obj-llvm/Release/bin/opt] Error 1

During an LLVM release build:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-register-desc -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenRegisterInfo.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td instruction names with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-instr-enums -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenInstrNames.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td instruction information with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-instr-desc -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenInstrInfo.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Building X86.td assembly writer with tblgen
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/Release/bin/tblgen -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86 -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target -gen-asm-writer -o  /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Target/X86/Release/X86GenAsmWriter.inc.tmp /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Target/X86/X86.td
llvm[3]: Compiling InstructionCombining.cpp for Release build 
if /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~dst/Developer/usr/bin/llvm-g++-4.2 -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Transforms/Scalar  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -O3  -fno-exceptions  -Woverloaded-virtual -pedantic -Wall -W -Wwrite-strings -Wno-long-long -Wunused -Wno-unused-parameter  -fstrict-aliasing -Wstrict-aliasing -c -MMD -MP -MF "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d.tmp" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.lo" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.o" -MT "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d" /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore/lib/Transforms/Scalar/InstructionCombining.cpp -o /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.o ; \
           then /bin/mv -f "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Transforms/Scalar/Release/InstructionCombining.d.tmp" "/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.sh.build/lib/Trans

llvm-svn: 64311
 2009-02-11 18:19:24 +00:00
Duncan Sands
e71d1394f6 Make sure the SCC pass manager initializes any contained 
function pass managers.  Without this, simplify-libcalls
would add nocapture attributes when run on its own, but
not when run as part of -std-compile-opts or similar.

llvm-svn: 64300
 2009-02-11 09:58:43 +00:00
Nick Lewycky
f4b028bf4c Forgot this in the previous checkin: fopen now has nocapture, realloc is 
supposed to take two arguments.

llvm-svn: 62457
 2009-01-18 04:46:10 +00:00
Nick Lewycky
6685977938 Run a post-pass that marks known function declarations by name. 
llvm-svn: 61632
 2009-01-04 20:27:34 +00:00
Nick Lewycky
8fd2389593 Turn strcmp into memcmp, such as strcmp(P, "x") --> memcmp(P, "x", 2). 
llvm-svn: 61297
 2008-12-21 00:19:21 +00:00
Eli Friedman
2bc3921ce2 Optimize memmove and memset into the LLVM builtins. Note that these 
only show up in code from front-ends besides llvm-gcc, like clang.

llvm-svn: 60287
 2008-11-30 08:32:11 +00:00
Dan Gohman
c162a200ad Add a new pass to simplify specific half_powr function calls. This is 
a specialized pass that it not likely to be generally useful.

llvm-svn: 58732
 2008-11-04 23:41:45 +00:00
Chris Lattner
806f0a8411 lower calls to abs to inline code, PR2337 
llvm-svn: 52138
 2008-06-09 08:26:51 +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
Duncan Sands
7b84c36791 Fix PR2341 - when the length is 4 use an i32 not 
an i16!  Cleaned up trailing whitespace while there.

llvm-svn: 51240
 2008-05-19 09:27:24 +00:00
Chris Lattner
96467cc665 strength reduce exp2 into ldexp, rdar://5852514 
llvm-svn: 50586
 2008-05-02 18:43:35 +00:00
Dan Gohman
04e2b94842 Update old-style syntax in some "not grep" tests. 
llvm-svn: 50560
 2008-05-01 23:50:07 +00:00
Chris Lattner
9d73228708 fix typo 
llvm-svn: 50519
 2008-05-01 06:16:48 +00:00
Chris Lattner
9a678d6f55 instcombine does memset optzns. 
llvm-svn: 50518
 2008-05-01 06:16:38 +00:00
Chris Lattner
926efd9174 simplifylibcalls doesn't optimize llvm.memmove, instcombine does. 
llvm-svn: 50517
 2008-05-01 06:14:24 +00:00
Chris Lattner
ce01263bff no reason for simplifylibcalls to simplify intrinsics, instcombine does 
a fine job.

llvm-svn: 50470
 2008-04-30 06:12:15 +00:00
Chris Lattner
a62a4d407a remove redundant check. 
llvm-svn: 50469
 2008-04-30 06:06:37 +00:00
Chris Lattner
be01a5f699 Generalize getUnaryFloatFunction to handle any FP unary function, automatically 
figuring out the suffix to use.  implement pow(2,x) -> exp2(x).

llvm-svn: 49437
 2008-04-09 17:48:11 +00:00
Chris Lattner
5d0cbe7d22 remove capital letter from test name. 
llvm-svn: 49436
 2008-04-09 17:46:36 +00:00
Chris Lattner
976ea8990e many cleanups to the pow optimizer. Allow it to handle powf, 
add support for  pow(x, 2.0) -> x*x.

llvm-svn: 49411
 2008-04-09 00:07:45 +00:00
Tanya Lattner
8ac346c316 Remove llvm-upgrade and update tests. 
llvm-svn: 48137
 2008-03-10 07:21:50 +00:00
Dan Gohman
34263074cb Convert tests using "grep -c ... | grep ..." to use the count script. 
llvm-svn: 41100
 2007-08-15 13:49:33 +00:00
John Criswell
57e5ed4b5a Convert .cvsignore files 
llvm-svn: 37801
 2007-06-29 16:35:07 +00:00
Reid Spencer
df17fa8ef9 For PR1319: 
Remove && from the end of the lines to prevent tests from throwing run
lines into the background. Also, clean up places where the same command
is run multiple times by using a temporary file.

llvm-svn: 36142
 2007-04-16 17:36:08 +00:00