optimize-ivar-offset-load.m
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -O0 -emit-llvm %s -o - | FileCheck %s
// rdar://16095748
@interface MyNSObject
@end
@interface SampleClass : MyNSObject {
@public
int _value;
}
+ (SampleClass*) new;
@end
@interface AppDelegate : MyNSObject
@end
extern void foo(int);
@implementation AppDelegate
- (void)application
{
// Create set of objects in loop
for(int i = 0; i < 2; i++) {
SampleClass *sample = [SampleClass new];
foo (sample->_value);
}
}
@end
// CHECK: [[IVAR:%.*]] = load i64, i64* @"OBJC_IVAR_$_SampleClass._value", align 8
// CHECK: [[THREE:%.*]] = bitcast [[ONE:%.*]]* [[CALL:%.*]] to i8*
// CHECK: [[ADDPTR:%.*]] = getelementptr inbounds i8, i8* [[THREE]], i64 [[IVAR]]
// CHECK: [[FOUR:%.*]] = bitcast i8* [[ADDPTR]] to i32*
// CHECK: [[FIVE:%.*]] = load i32, i32* [[FOUR]], align 4
// CHECK: call void @foo(i32 [[FIVE]])
@implementation SampleClass
+ (SampleClass*) new { return 0; }
- (void) SampleClassApplication
{
// Create set of objects in loop
for(int i = 0; i < 2; i++) {
SampleClass *sample = [SampleClass new];
foo (sample->_value);
}
}
@end
// CHECK: [[ZERO:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_, align 8, !invariant.load
// CHECK: [[IVAR:%.*]] = load i64, i64* @"OBJC_IVAR_$_SampleClass._value", align 8, !invariant.load
@interface Sample : SampleClass @end
@implementation Sample
- (void) SampleApplication
{
// Create set of objects in loop
for(int i = 0; i < 2; i++) {
SampleClass *sample = [SampleClass new];
foo (sample->_value);
}
}
@end
// CHECK: [[ZERO:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_, align 8, !invariant.load
// CHECK: [[IVAR:%.*]] = load i64, i64* @"OBJC_IVAR_$_SampleClass._value", align 8, !invariant.load