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1a88082441
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9 Commits

Author SHA1 Message Date
Meador Inge
1a88082441 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
521311700f 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
90bff969e1 Cosmetic change -- move two simplifiers to the right commented statement group. 
llvm-svn: 166199
 2012-10-18 18:12:43 +00:00
Meador Inge
4cd6c97082 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
a24293f9d8 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
161580aadb Remove unused private field. 
llvm-svn: 165881
 2012-10-13 18:03:34 +00:00
Meador Inge
7fafebf1b4 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
29f1f4f7b1 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
0d4d368820 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