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revert CodeGen support for the alloc_size attribute until we finish the design of a more generic metadata node 

llvm-svn: 159016
This commit is contained in:
Nuno Lopes 2012-06-22 18:01:38 +00:00
parent bbad269a3e
commit c65221decf
3 changed files with 0 additions and 48 deletions
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19
clang/lib/CodeGen/CGCall.cpp
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@ -2085,25 +2085,6 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo,
CS.setAttributes(Attrs);
CS.setCallingConv(static_cast<llvm::CallingConv::ID>(CallingConv));
// add metadata for __attribute__((alloc_size(foo)))
if (TargetDecl) {
if (const AllocSizeAttr* Attr = TargetDecl->getAttr<AllocSizeAttr>()) {
SmallVector<llvm::Value*, 4> Args;
llvm::IntegerType *Ty = llvm::IntegerType::getInt32Ty(getLLVMContext());
bool isMethod = false;
if (const CXXMethodDecl *MDecl = dyn_cast<CXXMethodDecl>(TargetDecl))
isMethod = MDecl->isInstance();
for (AllocSizeAttr::args_iterator I = Attr->args_begin(),
E = Attr->args_end(); I != E; ++I) {
Args.push_back(llvm::ConstantInt::get(Ty, *I + isMethod));
}
llvm::MDNode *MD = llvm::MDNode::get(getLLVMContext(), Args);
CS.getInstruction()->setMetadata("alloc_size", MD);
}
}
// In ObjC ARC mode with no ObjC ARC exception safety, tell the ARC
// optimizer it can aggressively ignore unwind edges.
if (CGM.getLangOpts().ObjCAutoRefCount)

11
clang/test/CodeGen/alloc_size.c
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@ -1,11 +0,0 @@
// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
void *my_recalloc(void *, unsigned, unsigned) __attribute__((alloc_size(2,3)));
// CHECK: @f
void* f() {
// CHECK: call i8* @my_recalloc{{.*}}, !alloc_size !0
return my_recalloc(0, 11, 27);
}
// CHECK: !0 = metadata !{i32 1, i32 2}

18
clang/test/CodeGenCXX/alloc_size.cpp
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@ -1,18 +0,0 @@
// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
struct foo {
void *my_alloc(unsigned) __attribute__((alloc_size(2)));
static void* static_alloc(unsigned) __attribute__((alloc_size(1)));
};
void* f(bool a) {
// CHECK: call i8* {{.*}}alloc{{.*}}, !alloc_size !0
// CHECK: call i8* {{.*}}static_alloc{{.*}}, !alloc_size !1
foo obj;
return a ? obj.my_alloc(2) :
foo::static_alloc(42);
}
// CHECK: !0 = metadata !{i32 1}
// CHECK: !1 = metadata !{i32 0}