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| author | Micah Villmow <villmow@gmail.com> | 2012-10-11 17:21:41 +0000 |
|---|---|---|
| committer | Micah Villmow <villmow@gmail.com> | 2012-10-11 17:21:41 +0000 |
| commit | f3840d2c16a4ec4c879a8ded402835746de380f8 (patch) | |
| tree | 705fb3f3aea368f4880d2d672312e6b783528718 /lib/Transforms/Scalar/MemCpyOptimizer.cpp | |
| parent | ebba49395c189364c9ef77fb4c432856330ceca1 (diff) | |
| download | external_llvm-f3840d2c16a4ec4c879a8ded402835746de380f8.zip external_llvm-f3840d2c16a4ec4c879a8ded402835746de380f8.tar.gz external_llvm-f3840d2c16a4ec4c879a8ded402835746de380f8.tar.bz2 | |
Add in the first iteration of support for llvm/clang/lldb to allow variable per address space pointer sizes to be optimized correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165726 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/MemCpyOptimizer.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/MemCpyOptimizer.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp index 517657c..97fff9e 100644 --- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -174,10 +174,11 @@ bool MemsetRange::isProfitableToUseMemset(const DataLayout &TD) const { // this width can be stored. If so, check to see whether we will end up // actually reducing the number of stores used. unsigned Bytes = unsigned(End-Start); - unsigned NumPointerStores = Bytes/TD.getPointerSize(); + unsigned AS = cast<StoreInst>(TheStores[0])->getPointerAddressSpace(); + unsigned NumPointerStores = Bytes/TD.getPointerSize(AS); // Assume the remaining bytes if any are done a byte at a time. - unsigned NumByteStores = Bytes - NumPointerStores*TD.getPointerSize(); + unsigned NumByteStores = Bytes - NumPointerStores*TD.getPointerSize(AS); // If we will reduce the # stores (according to this heuristic), do the // transformation. This encourages merging 4 x i8 -> i32 and 2 x i16 -> i32 |