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| author | Pete Cooper <peter_cooper@apple.com> | 2011-11-10 21:45:06 +0000 |
|---|---|---|
| committer | Pete Cooper <peter_cooper@apple.com> | 2011-11-10 21:45:06 +0000 |
| commit | b6d7114bcfa29b262f9f043a76da7dba39d65136 (patch) | |
| tree | ff6f52903cb7c14e9bc75cfc1b69ee8f87303cfd /lib/CodeGen/CGObjCMac.cpp | |
| parent | a60279d9ae6c213ccddee44c78bd8ae82658d3d9 (diff) | |
Add invariant.load metadata to loads from selector references. Allows these loads to later be moved/combined in the optimizer. Fixes <rdar://problem/6027699>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144318 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGObjCMac.cpp')
| -rw-r--r-- | lib/CodeGen/CGObjCMac.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp index 84277f6827..1cbcc58ae5 100644 --- a/lib/CodeGen/CGObjCMac.cpp +++ b/lib/CodeGen/CGObjCMac.cpp @@ -5887,7 +5887,12 @@ llvm::Value *CGObjCNonFragileABIMac::EmitSelector(CGBuilderTy &Builder, if (lval) return Entry; - return Builder.CreateLoad(Entry); + llvm::LoadInst* LI = Builder.CreateLoad(Entry); + + LI->setMetadata(CGM.getModule().getMDKindID("invariant.load"), + llvm::MDNode::get(VMContext, + ArrayRef<llvm::Value*>())); + return LI; } /// EmitObjCIvarAssign - Code gen for assigning to a __strong object. /// objc_assign_ivar (id src, id *dst, ptrdiff_t) |