Commit Graph

183 Commits

Author SHA1 Message Date
Benjamin Kramer e07728b936 SimplifyLibCalls: Give all safely-shrinkable libcalls the same treatment.
llvm-svn: 162383
2012-08-22 19:39:15 +00:00
Chad Rosier 0122909d95 Add a few float shrinking optimizations to SimplifyLibCalls. Unsafe
optimizations are guarded by the -enable-double-float-shrink LLVM option.
Last bit of PR13574.  Patch by Weiming Zhao <weimingz@codeaurora.org>.

llvm-svn: 162368
2012-08-22 17:22:33 +00:00
Chad Rosier b2f5c1cdbb Add a new helper function, AddOpt(F1, F1, Opt), as part of PR13574. No
functional change intended.  Patch by Weiming Zhao <weimingz@codeaurora.org>.

llvm-svn: 162363
2012-08-22 16:52:57 +00:00
Benjamin Kramer 000132454c SimplifyLibcalls: Add fabs and trunc to the list of libcalls that are safe to shrink from double to float.
llvm-svn: 162173
2012-08-18 19:27:32 +00:00
Nuno Lopes 5940c4a15f do null checks for a few more Emit*() functions.
Thanks Eli for noticing.

llvm-svn: 160787
2012-07-26 17:10:46 +00:00
Nuno Lopes 89702e94b5 make all Emit*() functions consult the TargetLibraryInfo information before creating a call to a library function.
Update all clients to pass the TLI information around.
Previous draft reviewed by Eli.

llvm-svn: 160733
2012-07-25 16:46:31 +00:00
Nadav Rotem 465834c85f Clean whitespaces.
llvm-svn: 160668
2012-07-24 10:51:42 +00:00
Chandler Carruth aafe0918bc Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h
This was always part of the VMCore library out of necessity -- it deals
entirely in the IR. The .cpp file in fact was already part of the VMCore
library. This is just a mechanical move.

I've tried to go through and re-apply the coding standard's preferred
header sort, but at 40-ish files, I may have gotten some wrong. Please
let me know if so.

I'll be committing the corresponding updates to Clang and Polly, and
Duncan has DragonEgg.

Thanks to Bill and Eric for giving the green light for this bit of cleanup.

llvm-svn: 159421
2012-06-29 12:38:19 +00:00
Nuno Lopes 31b54a5379 revert my previous commit (r159173), since as Eli pointed out, it's perfectly ok to mark realloc as noalias
llvm-svn: 159175
2012-06-25 23:26:10 +00:00
Nuno Lopes 75eaa72de9 do not set realloc() as NotAlias, since it can return the same pointer. This whole thing should be upgraded to use the MemoryBuiltin interface anyway..
llvm-svn: 159173
2012-06-25 22:55:50 +00:00
David Majnemer a9330fe553 Teach SimplifyLibCalls about stpcpy.
llvm-svn: 156815
2012-05-15 11:46:21 +00:00
Joe Groff a81bcbb9bb fix pr12559: mark unavailable win32 math libcalls
also fix SimplifyLibCalls to use TLI rather than compile-time conditionals to enable optimizations on floor, ceil, round, rint, and nearbyint

llvm-svn: 154960
2012-04-17 23:05:54 +00:00
Chris Lattner cf9e8f6968 reapply the patches reverted in r149470 that reenable ConstantDataArray,
but with a critical fix to the SelectionDAG code that optimizes copies
from strings into immediate stores: the previous code was stopping reading
string data at the first nul.  Address this by adding a new argument to
llvm::getConstantStringInfo, preserving the behavior before the patch.

llvm-svn: 149800
2012-02-05 02:29:43 +00:00
Argyrios Kyrtzidis 17c981a45b Revert Chris' commits up to r149348 that started causing VMCoreTests unit test to fail.
These are:

r149348
r149351
r149352
r149354
r149356
r149357
r149361
r149362
r149364
r149365

llvm-svn: 149470
2012-02-01 04:51:17 +00:00
Chris Lattner 9e4b8726f8 eliminate the last uses of GetConstantStringInfo from this file, I didn't realize I was that close...
llvm-svn: 149354
2012-01-31 04:54:27 +00:00
Chris Lattner 8193b06e44 start moving SimplifyLibcalls over to getConstantStringInfo, which is
dramatically more efficient than GetConstantStringInfo.

llvm-svn: 149352
2012-01-31 04:43:11 +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
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
Chandler Carruth 58a71ed339 Switch llvm.cttz and llvm.ctlz to accept a second i1 parameter which
indicates whether the intrinsic has a defined result for a first
argument equal to zero. This will eventually allow these intrinsics to
accurately model the semantics of GCC's __builtin_ctz and __builtin_clz
and the X86 instructions (prior to AVX) which implement them.

This patch merely sets the stage by extending the signature of these
intrinsics and establishing auto-upgrade logic so that the old spelling
still works both in IR and in bitcode. The upgrade logic preserves the
existing (inefficient) semantics. This patch should not change any
behavior. CodeGen isn't updated because it can use the existing
semantics regardless of the flag's value.

Note that this will be followed by API updates to Clang and DragonEgg.

Reviewed by Nick Lewycky!

llvm-svn: 146357
2011-12-12 04:26:04 +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 b106bcc536 StringRefize and simplify.
llvm-svn: 144675
2011-11-15 19:12:09 +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
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
Chris Lattner 229907cd11 land David Blaikie's patch to de-constify Type, with a few tweaks.
llvm-svn: 135375
2011-07-18 04:54:35 +00:00
Benjamin Kramer e6e1933f31 Change Intrinsic::getDeclaration and friends to take an ArrayRef.
llvm-svn: 135154
2011-07-14 17:45:39 +00:00
Jay Foad b804a2b751 Second attempt at de-constifying LLVM Types in FunctionType::get(),
StructType::get() and TargetData::getIntPtrType().

llvm-svn: 134982
2011-07-12 14:06:48 +00:00
Bill Wendling a78cd228c2 Revert r134893 and r134888 (and related patches in other trees). It was causing
an assert on Darwin llvm-gcc builds.

Assertion failed: (castIsValid(op, S, Ty) && "Invalid cast!"), function Create, file /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.llvm-gcc-i386-darwin9-RA/llvm.src/lib/VMCore/Instructions.cpp, li\
ne 2067.
etc.

http://smooshlab.apple.com:8013/builders/llvm-gcc-i386-darwin9-RA/builds/2354

--- Reverse-merging r134893 into '.':
U    include/llvm/Target/TargetData.h
U    include/llvm/DerivedTypes.h
U    tools/bugpoint/ExtractFunction.cpp
U    unittests/Support/TypeBuilderTest.cpp
U    lib/Target/ARM/ARMGlobalMerge.cpp
U    lib/Target/TargetData.cpp
U    lib/VMCore/Constants.cpp
U    lib/VMCore/Type.cpp
U    lib/VMCore/Core.cpp
U    lib/Transforms/Utils/CodeExtractor.cpp
U    lib/Transforms/Instrumentation/ProfilingUtils.cpp
U    lib/Transforms/IPO/DeadArgumentElimination.cpp
U    lib/CodeGen/SjLjEHPrepare.cpp
--- Reverse-merging r134888 into '.':
G    include/llvm/DerivedTypes.h
U    include/llvm/Support/TypeBuilder.h
U    include/llvm/Intrinsics.h
U    unittests/Analysis/ScalarEvolutionTest.cpp
U    unittests/ExecutionEngine/JIT/JITTest.cpp
U    unittests/ExecutionEngine/JIT/JITMemoryManagerTest.cpp
U    unittests/VMCore/PassManagerTest.cpp
G    unittests/Support/TypeBuilderTest.cpp
U    lib/Target/MBlaze/MBlazeIntrinsicInfo.cpp
U    lib/Target/Blackfin/BlackfinIntrinsicInfo.cpp
U    lib/VMCore/IRBuilder.cpp
G    lib/VMCore/Type.cpp
U    lib/VMCore/Function.cpp
G    lib/VMCore/Core.cpp
U    lib/VMCore/Module.cpp
U    lib/AsmParser/LLParser.cpp
U    lib/Transforms/Utils/CloneFunction.cpp
G    lib/Transforms/Utils/CodeExtractor.cpp
U    lib/Transforms/Utils/InlineFunction.cpp
U    lib/Transforms/Instrumentation/GCOVProfiling.cpp
U    lib/Transforms/Scalar/ObjCARC.cpp
U    lib/Transforms/Scalar/SimplifyLibCalls.cpp
U    lib/Transforms/Scalar/MemCpyOptimizer.cpp
G    lib/Transforms/IPO/DeadArgumentElimination.cpp
U    lib/Transforms/IPO/ArgumentPromotion.cpp
U    lib/Transforms/InstCombine/InstCombineCompares.cpp
U    lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
U    lib/Transforms/InstCombine/InstCombineCalls.cpp
U    lib/CodeGen/DwarfEHPrepare.cpp
U    lib/CodeGen/IntrinsicLowering.cpp
U    lib/Bitcode/Reader/BitcodeReader.cpp

llvm-svn: 134949
2011-07-12 01:15:52 +00:00
Jay Foad 56cc1530ee De-constify Types in FunctionType::get().
llvm-svn: 134888
2011-07-11 07:56:41 +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 5003782293 Fix typo in comment.
llvm-svn: 126941
2011-03-03 14:21:22 +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
Chris Lattner eddb33ebd0 wire TargetLibraryInfo into simplify libcalls and use it in a couple of
trivial places.  This pass needs a lot of work.

llvm-svn: 126367
2011-02-24 07:16:14 +00:00
Chris Lattner 2e56e20662 move a massive amount of code out into its own helper function
to reduce nesting.  This needs to be turned into a table.

llvm-svn: 126366
2011-02-24 07:12:12 +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
Benjamin Kramer 7cba269dfb SimplifyLibCalls: Use IRBuilder to simplify code.
llvm-svn: 122575
2010-12-27 00:16:46 +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
Owen Anderson 6c18d1aac0 Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820
2010-10-19 17:21:58 +00:00
Owen Anderson df7a4f2515 Now with fewer extraneous semicolons!
llvm-svn: 115996
2010-10-07 22:25:06 +00:00
Benjamin Kramer 5d66e5feb8 Tighten up prototype verification of strchr and strrchr to avoid a crash in the very unlikely case that someone passes an integer > i64 to strchr.
llvm-svn: 115144
2010-09-30 11:21:59 +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
Owen Anderson a7aed18624 Reapply r110396, with fixes to appease the Linux buildbot gods.
llvm-svn: 110460
2010-08-06 18:33:48 +00:00
Owen Anderson bda59bd247 Revert r110396 to fix buildbots.
llvm-svn: 110410
2010-08-06 00:23:35 +00:00
Owen Anderson 755aceb5d0 Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
2010-08-05 23:42:04 +00:00