Add invariant.load metadata to loads from selector references. Allows these loads to later be moved/combined in the optimizer. Fixes <rdar://problem/6027699>
llvm-svn: 144318
This commit is contained in:
parent
9304ea4306
commit
9d6055133b
|
@ -5887,7 +5887,12 @@ llvm::Value *CGObjCNonFragileABIMac::EmitSelector(CGBuilderTy &Builder,
|
||||||
|
|
||||||
if (lval)
|
if (lval)
|
||||||
return Entry;
|
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.
|
/// EmitObjCIvarAssign - Code gen for assigning to a __strong object.
|
||||||
/// objc_assign_ivar (id src, id *dst, ptrdiff_t)
|
/// objc_assign_ivar (id src, id *dst, ptrdiff_t)
|
||||||
|
|
|
@ -0,0 +1,9 @@
|
||||||
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -emit-llvm -fblocks -o - %s | FileCheck %s
|
||||||
|
|
||||||
|
// rdar://6027699
|
||||||
|
|
||||||
|
void test(id x) {
|
||||||
|
// CHECK: load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", !invariant.load
|
||||||
|
// CHECK: @objc_msgSend
|
||||||
|
[x foo];
|
||||||
|
}
|
Loading…
Reference in New Issue