a7fb58f5f5
Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub
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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
d214ed0e75
Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size.
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llvm-svn: 97828
2010-03-05 20:59:47 +00:00
d86233c118
Recommit this, looks like it wasn't the cause.
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llvm-svn: 95165
2010-02-03 00:21:58 +00:00
e67d01a9a8
Hopefully temporarily revert this.
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llvm-svn: 95154
2010-02-02 23:01:31 +00:00
4264e7e46f
Re-add strcmp and known size object size checking optimization.
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Passed bootstrap and nightly test run here.
llvm-svn: 95145
2010-02-02 22:10:43 +00:00
5a0e174863
Revert my last couple of patches. They appear to have broken bison.
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llvm-svn: 94841
2010-01-29 21:16:24 +00:00
9b3c02b7da
Make strcpy_chk lower to strcpy if we have a safe size.
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llvm-svn: 94783
2010-01-29 01:37:11 +00:00
1a32ede6fd
move an optimization for memcmp out of simplifylibcalls and into
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SDISel. This optimization was causing simplifylibcalls to
introduce type-unsafe nastiness. This is the first step, I'll be
expanding the memcmp optimizations shortly, covering things that
we really really wouldn't want simplifylibcalls to do.
llvm-svn: 92098
2009-12-24 00:37:38 +00:00
f278addbdc
reapply my strstr optimization. I have reproduced the x86-64 bootstrap
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miscompile (i386.o miscompares) but it happens both with and without
this patch.
llvm-svn: 91532
2009-12-16 09:32:05 +00:00
177be32334
revert my strstr optimization, I'm told it breaks x86-64 bootstrap.
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Will reapply with a fix when I get a chance.
llvm-svn: 91486
2009-12-16 00:46:02 +00:00
26ab363361
optimize strstr, PR5783
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llvm-svn: 91438
2009-12-15 19:14:40 +00:00
b971445ab7
Teach SimplifyLibCalls to fold memcmp calls with constant arguments.
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llvm-svn: 86141
2009-11-05 17:44:22 +00:00
62995c71a2
Fix SimplifyLibCalls to transfer attributes from callees rather than
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calls, since direct calls don't always reflect the attributes of their
callees.
llvm-svn: 82867
2009-09-26 18:10:13 +00:00
48f7da742a
I put the wrong rdar number in this test.
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llvm-svn: 82829
2009-09-26 01:11:57 +00:00
5ffd53892d
Transform pow(x, 0.5) to (x == -inf ? inf : fabs(sqrt(x))), which is
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typically faster then doing a general pow.
llvm-svn: 82819
2009-09-25 23:10:17 +00:00
1880092722
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
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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
72a13d2476
Use opt -S instead of piping bitcode output through llvm-dis.
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llvm-svn: 81257
2009-09-08 22:34:10 +00:00
9737a63ed8
Change these tests to feed the assembly files to opt directly, instead
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of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
b9ea94c990
Eliminate uses of %prcontext.
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- 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
27266f164f
In C++, code is not allowed to call main. In C it is, this
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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
6e32e5cf0c
Add targetdata strings to these tests, since SimplifyLibCalls uses
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TargetData to find the pointer size.
llvm-svn: 79490
2009-08-19 23:18:49 +00:00
dea2358c68
Fix SimplifyLibcalls and ValueTracking to check mayBeOverridden
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before performing optimizations based on constant string values.
llvm-svn: 79384
2009-08-19 00:11:12 +00:00
98ddd164d8
Fix PR4645 which was fallout from the fix for PR4641.
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- Call RAUW to delete all instructions (this is a patch from Nick Lewycky).
llvm-svn: 77512
2009-07-29 22:00:43 +00:00
013c8e5474
Just discard the output, no need to turn it back into text.
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llvm-svn: 77439
2009-07-29 06:14:52 +00:00
1d3defa392
don't dump .bc file to stdout, and simplify this to a trivial testcase.
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llvm-svn: 77436
2009-07-29 05:32:07 +00:00
f82326b984
Bulk erasing instructions without RAUWing them is unsafe. Instead, break them
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into a new BB that has no predecessors.
llvm-svn: 77433
2009-07-29 05:17:50 +00:00
ff9bf97ceb
Fix simplifylibcalls memset recognition to work on 64-bit platforms
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where int is 32 bits.
llvm-svn: 76293
2009-07-18 08:34:51 +00:00
87a222c5c8
part of PR4405: disable a contentious optimization for
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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
a5b9645c4b
Split the Add, Sub, and Mul instruction opcodes into separate
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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
221895303c
fix PR4284, a bug in simplifylibcalls handling memcmp. Patch by
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Benjamin Kramer!
llvm-svn: 72625
2009-05-30 18:43:04 +00:00
7e335a763a
Fix PR4206 - crash in simplify lib calls
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llvm-svn: 71644
2009-05-13 06:26:11 +00:00
91b6af24ac
add some optimizations for strncpy/strncat and factor some
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code. Patch by Benjamin Kramer!
llvm-svn: 68885
2009-04-12 05:06:39 +00:00
01aa6ec97a
Let the strcat optimizer return the pointer to the start of the buffer,
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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
d234a845f9
Mark strto* as readonly when the endptr is null.
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llvm-svn: 64460
2009-02-13 17:08:33 +00:00
a0e83a0952
On strtod and friends, mark 'endptr' nocapture in the function prototype, and
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mark the first argument nocapture if endptr=NULL for each particular call.
llvm-svn: 64453
2009-02-13 15:31:46 +00:00
cdccffe731
Reapply r64300:
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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
5f14a01340
Revert r64300 and r64301. These were causing the following errors respectively:
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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
003754f656
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
e5be1cd635
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
959af7ba30
Run a post-pass that marks known function declarations by name.
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llvm-svn: 61632
2009-01-04 20:27:34 +00:00
10eb8e533f
Turn strcmp into memcmp, such as strcmp(P, "x") --> memcmp(P, "x", 2).
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llvm-svn: 61297
2008-12-21 00:19:21 +00:00
09bc610945
Optimize memmove and memset into the LLVM builtins. Note that these
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only show up in code from front-ends besides llvm-gcc, like clang.
llvm-svn: 60287
2008-11-30 08:32:11 +00:00
8cdea717a3
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
9c9f531a47
lower calls to abs to inline code, PR2337
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llvm-svn: 52138
2008-06-09 08:26:51 +00:00
1e427c3264
sabre brings to my attention that the 'tr' suffix is also obsolete
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llvm-svn: 51349
2008-05-20 21:00:03 +00:00
f45ff35bfe
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.
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llvm-svn: 51328
2008-05-20 19:52:04 +00:00
eec7a3c071
Fix PR2341 - when the length is 4 use an i32 not
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an i16! Cleaned up trailing whitespace while there.
llvm-svn: 51240
2008-05-19 09:27:24 +00:00
5f0563ceb6
strength reduce exp2 into ldexp, rdar://5852514
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llvm-svn: 50586
2008-05-02 18:43:35 +00:00
2cdcf2bd5f
Update old-style syntax in some "not grep" tests.
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llvm-svn: 50560
2008-05-01 23:50:07 +00:00
0ceb8807e2
fix typo
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llvm-svn: 50519
2008-05-01 06:16:48 +00:00
Eric Christopher