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| author | Erik Pilkington <erik.pilkington@gmail.com> | 2017-02-23 21:08:08 +0000 |
|---|---|---|
| committer | Erik Pilkington <erik.pilkington@gmail.com> | 2017-02-23 21:08:08 +0000 |
| commit | 11e7407389c4b2a6f51cb8983972b591573a4645 (patch) | |
| tree | 22df56c981f03ee240e02d9c72b9e644a17e09df /lib/CodeGen/CGObjC.cpp | |
| parent | c08b4f6784e0b35540d436ff63b4bb545df40500 (diff) | |
[ObjC][CodeGen] CodeGen support for @available.
CodeGens uses of @available into calls to the compiler-rt function
__isOSVersionAtLeast.
This commit is part of a feature that I proposed here:
http://lists.llvm.org/pipermail/cfe-dev/2016-July/049851.html
Differential revision: https://reviews.llvm.org/D27827
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@296015 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGObjC.cpp')
| -rw-r--r-- | lib/CodeGen/CGObjC.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/CodeGen/CGObjC.cpp b/lib/CodeGen/CGObjC.cpp index 913a2ea72e..adeb6d1839 100644 --- a/lib/CodeGen/CGObjC.cpp +++ b/lib/CodeGen/CGObjC.cpp @@ -3399,5 +3399,21 @@ CodeGenFunction::EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty) { return Val; } +llvm::Value * +CodeGenFunction::EmitBuiltinAvailable(ArrayRef<llvm::Value *> Args) { + assert(Args.size() == 3 && "Expected 3 argument here!"); + + if (!CGM.IsOSVersionAtLeastFn) { + llvm::FunctionType *FTy = + llvm::FunctionType::get(Int32Ty, {Int32Ty, Int32Ty, Int32Ty}, false); + CGM.IsOSVersionAtLeastFn = + CGM.CreateRuntimeFunction(FTy, "__isOSVersionAtLeast"); + } + + llvm::Value *CallRes = + EmitNounwindRuntimeCall(CGM.IsOSVersionAtLeastFn, Args); + + return Builder.CreateICmpNE(CallRes, llvm::Constant::getNullValue(Int32Ty)); +} CGObjCRuntime::~CGObjCRuntime() {} |