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| author | Bill Wendling <isanbard@gmail.com> | 2007-10-23 21:30:25 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2007-10-23 21:30:25 +0000 |
| commit | d9216574ddab03de298afadafda68d770b49545d (patch) | |
| tree | 866d746377caa7e47051dc2eb47b838948531802 /lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | |
| parent | be1a026a8d1c9aee03f2d5674ff1f20bc914d547 (diff) | |
| download | external_llvm-d9216574ddab03de298afadafda68d770b49545d.zip external_llvm-d9216574ddab03de298afadafda68d770b49545d.tar.gz external_llvm-d9216574ddab03de298afadafda68d770b49545d.tar.bz2 | |
Lowering a memcpy to the stack is killing PPC. The ARM and X86 backends already
have their own custom memcpy lowering code. This code needs to be factored out
into a target-independent lowering method with hooks to the backend. In the
meantime, just call memcpy if we're trying to copy onto a stack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43262 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 610c898..4468d16 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -4302,6 +4302,10 @@ void SelectionDAGLowering::visitMemIntrinsic(CallInst &I, unsigned Op) { break; } case ISD::MEMCPY: { + // FIXME: Disabling memcpy lowering for copying onto the stack. + if (Op1.getOpcode() == ISD::FrameIndex) + break; + if (MeetsMaxMemopRequirement(MemOps, TLI.getMaxStoresPerMemcpy(), Size->getValue(), Align, TLI)) { unsigned NumMemOps = MemOps.size(); |