a2347baaec
Because references must be initialized using some evaluated expression, they must point to something, and a callee can assume the reference parameter is dereferenceable. Taking advantage of a new attribute just added to LLVM, mark them as such. Because dereferenceability in addrspace(0) implies nonnull in the backend, we don't need both attributes. However, we need to know the size of the object to use the dereferenceable attribute, so for incomplete types we still emit only nonnull. llvm-svn: 213386
89 lines
1.9 KiB
Plaintext
89 lines
1.9 KiB
Plaintext
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
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class S {
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public:
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S& operator = (const S&);
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S (const S&);
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S ();
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};
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struct CGRect {
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CGRect & operator = (const CGRect &);
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};
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@interface I {
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S position;
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CGRect bounds;
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}
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@property(assign, nonatomic) S position;
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@property CGRect bounds;
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@property CGRect frame;
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- (void)setFrame:(CGRect)frameRect;
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- (CGRect)frame;
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- (void) initWithOwner;
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- (CGRect)extent;
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- (void)dealloc;
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@end
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@implementation I
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@synthesize position;
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@synthesize bounds;
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@synthesize frame;
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// CHECK: define internal void @"\01-[I setPosition:]"
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// CHECK: call dereferenceable({{[0-9]+}}) %class.S* @_ZN1SaSERKS_
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// CHECK-NEXT: ret void
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- (void)setFrame:(CGRect)frameRect {}
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- (CGRect)frame {return bounds;}
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- (void)initWithOwner {
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I* _labelLayer;
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CGRect labelLayerFrame = self.bounds;
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labelLayerFrame = self.bounds;
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_labelLayer.frame = labelLayerFrame;
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}
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// rdar://8366604
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- (void)dealloc
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{
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CGRect cgrect = self.extent;
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}
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- (struct CGRect)extent {return bounds;}
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@end
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// CHECK-LABEL: define i32 @main
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// CHECK: call void @_ZN1SC1ERKS_(%class.S* [[AGGTMP:%[a-zA-Z0-9\.]+]], %class.S* dereferenceable({{[0-9]+}}) {{%[a-zA-Z0-9\.]+}})
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// CHECK: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, %class.S*)*)(i8* {{%[a-zA-Z0-9\.]+}}, i8* {{%[a-zA-Z0-9\.]+}}, %class.S* [[AGGTMP]])
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// CHECK-NEXT: ret i32 0
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int main() {
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I *i;
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S s1;
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i.position = s1;
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return 0;
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}
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// rdar://8379892
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// CHECK-LABEL: define void @_Z1fP1A
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// CHECK: call void @_ZN1XC1Ev(%struct.X* [[LVTEMP:%[a-zA-Z0-9\.]+]])
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// CHECK: call void @_ZN1XC1ERKS_(%struct.X* [[AGGTMP:%[a-zA-Z0-9\.]+]], %struct.X* dereferenceable({{[0-9]+}}) [[LVTEMP]])
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// CHECK: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, %struct.X*)*)({{.*}} %struct.X* [[AGGTMP]])
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struct X {
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X();
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X(const X&);
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~X();
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};
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@interface A {
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X xval;
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}
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- (X)x;
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- (void)setX:(X)x;
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@end
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void f(A* a) {
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a.x = X();
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}
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