1b1c8d83d3
Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
69 lines
1.3 KiB
Objective-C
69 lines
1.3 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin -fblocks -emit-llvm -o - %s | FileCheck %s
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@interface NSObject
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+ (id) new;
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- (id) init;
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@end
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@interface Base : NSObject @end
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// @implementation Base
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// {
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// int dummy;
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// }
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// @end
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@interface Derived : Base
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{
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@public int member;
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}
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@end
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@implementation Derived
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- (id) init
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{
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self = [super init];
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member = 42;
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return self;
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}
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@end
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// CHECK: define internal i8* @"\01-[Derived init]"
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// CHECK: [[IVAR:%.*]] = load i64, i64* @"OBJC_IVAR_$_Derived.member", align 8, !invariant.load
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void * variant_load_1(int i) {
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void *ptr;
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while (i--) {
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Derived *d = [Derived new];
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ptr = &d->member;
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}
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return ptr;
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}
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// CHECK-LABEL: define{{.*}} i8* @variant_load_1(i32 noundef %i)
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// CHECK: [[IVAR:%.*]] = load i64, i64* @"OBJC_IVAR_$_Derived.member", align 8{{$}}
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@interface Container : Derived @end
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@implementation Container
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- (void *) invariant_load_1
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{
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return &self->member;
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}
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@end
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// CHECK-LABEL: define internal i8* @"\01-[Container invariant_load_1]"
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// CHECK: [[IVAR:%.*]] = load i64, i64* @"OBJC_IVAR_$_Derived.member", align 8, !invariant.load
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@interface ForBlock
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{
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@public
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id foo;
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}
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@end
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// CHECK-LABEL: define internal i8* @block_block_invoke
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// CHECK: load i64, i64* @"OBJC_IVAR_$_ForBlock.foo"
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id (^block)(ForBlock*) = ^(ForBlock* a) {
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return a->foo;
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};
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