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author | Duncan Sands <baldrick@free.fr> | 2009-11-10 09:08:09 +0000 |
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committer | Duncan Sands <baldrick@free.fr> | 2009-11-10 09:08:09 +0000 |
commit | f07c9497b2ad030457c9314db5bfb8b0b204a0da (patch) | |
tree | 2b01ff48ba1c4deada50224f127670e7162551ae /lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | |
parent | 8e345a1c418608c49abb7c51a090bbb36f1273bc (diff) | |
download | llvm-f07c9497b2ad030457c9314db5bfb8b0b204a0da.tar.gz llvm-f07c9497b2ad030457c9314db5bfb8b0b204a0da.tar.bz2 llvm-f07c9497b2ad030457c9314db5bfb8b0b204a0da.tar.xz |
Codegen support for the llvm.invariant/lifetime.start/end intrinsics:
just throw them away.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86678 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp index ee8bf79171..9818e62a40 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp @@ -4409,6 +4409,16 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) { return implVisitBinaryAtomic(I, ISD::ATOMIC_LOAD_UMAX); case Intrinsic::atomic_swap: return implVisitBinaryAtomic(I, ISD::ATOMIC_SWAP); + + case Intrinsic::invariant_start: + case Intrinsic::lifetime_start: + // Discard region information. + setValue(&I, DAG.getUNDEF(TLI.getPointerTy())); + return 0; + case Intrinsic::invariant_end: + case Intrinsic::lifetime_end: + // Discard region information. + return 0; } } |