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211 Commits

Author SHA1 Message Date
Meador Inge 067294b3ac instcombine: Migrate strncpy optimizations 
This patch migrates the strncpy optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.

llvm-svn: 167102
 2012-10-31 03:33:00 +00:00
Meador Inge 9a6a190562 instcombine: Migrate stpcpy optimizations 
This patch migrates the stpcpy optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.  Note that the
__stpcpy_chk simplifications were migrated in a previous commit.

llvm-svn: 167083
 2012-10-31 00:20:56 +00:00
Meador Inge cdb2ca54ae instcombine: Split out the __stpcpy_chk simplifications from StrCpyChkOpt 
r166198 migrated the strcpy optimization to instcombine.  The strcpy
simplifier that was migrated from Transforms/Scalar/SimplifyLibCalls.cpp
was also doing some __strcpy_chk simplifications.  Those fortified
simplifications were migrated as well, but introduced a bug in the
__stpcpy_chk simplifier in the process.  This happened because the
__strcpy_chk and __stpcpy_chk simplifiers were both mapped to StrCpyChkOpt
which was updated with simplifications that worked for __strcpy_chk, but
not __stpcpy_chk.

This patch fixes the problem by adding proper test coverage and creating a
new simplifier for __stpcpy_chk (instead of sharing one with __strcpy_chk).

llvm-svn: 167082
 2012-10-31 00:20:51 +00:00
Micah Villmow 12d9127833 Add in support for getIntPtrType to get the pointer type based on the address space. 
This checkin also adds in some tests that utilize these paths and updates some of the
clients.

llvm-svn: 166578
 2012-10-24 15:52:52 +00:00
Meador Inge 2332615f53 Cosmetic change -- move two simplifiers to the right commented statement group. 
llvm-svn: 166199
 2012-10-18 18:12:43 +00:00
Meador Inge 000dbccfc6 instcombine: Migrate strcpy optimizations 
This patch migrates the strcpy optimizations from the simplify-libcalls pass
into the instcombine library call simplifier.  Note also that StrCpyChkOpt
has been updated with a few simplifications that were being done in the
simplify-libcalls version of StrCpyOpt, but not in the migrated implementation
of StrCpyOpt.  There is no reason to overload StrCpyOpt with fortified and
regular simplifications in the new model since there is already a dedicated
simplifier for __strcpy_chk.

llvm-svn: 166198
 2012-10-18 18:12:40 +00:00
Meador Inge 40b6fac36c instcombine: Migrate strcmp and strncmp optimizations 
This patch migrates the strcmp and strncmp optimizations from the
simplify-libcalls pass into the instcombine library call simplifier.

llvm-svn: 165915
 2012-10-15 03:47:37 +00:00
Benjamin Kramer 44e58f9eb1 Remove unused private field. 
llvm-svn: 165881
 2012-10-13 18:03:34 +00:00
Meador Inge 174185084c instcombine: Migrate strchr and strrchr optimizations 
This patch migrates the strchr and strrchr optimizations from the
simplify-libcalls pass into the instcombine library call simplifier.

llvm-svn: 165875
 2012-10-13 16:45:37 +00:00
Meador Inge 7fb2f7378b instcombine: Migrate strcat and strncat optimizations 
This patch migrates the strcat and strncat optimizations from the
simplify-libcalls pass into the instcombine library call simplifier.

llvm-svn: 165874
 2012-10-13 16:45:32 +00:00
Meador Inge df796f893f Implement new LibCallSimplifier class 
This patch implements the new LibCallSimplifier class as outlined in [1].
In addition to providing the new base library simplification infrastructure,
all the fortified library call simplifications were moved over to the new
infrastructure.  The rest of the library simplification optimizations will
be moved over with follow up patches.

NOTE: The original fortified library call simplifier located in the
SimplifyFortifiedLibCalls class was not removed because it is still
used by CodeGenPrepare.  This class will eventually go away too.

[1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-August/052283.html

llvm-svn: 165873
 2012-10-13 16:45:24 +00:00