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627586b850
This makes it easier to debug crashes and hangs in block functions since users can easily find out where the block is called from. The option doesn't disable tail-calls from non-escaping blocks since non-escaping blocks are not as hard to debug as escaping blocks. rdar://problem/35758207 Differential Revision: https://reviews.llvm.org/D43841 llvm-svn: 326530
55 lines
2.3 KiB
Objective-C
55 lines
2.3 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin -fblocks -fno-escaping-block-tail-calls -emit-llvm -o - %s | FileCheck %s
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// CHECK-LABEL: define void @test(
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE0:.*]] to i8*)
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE1:.*]] to i8*)
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE2:.*]] to i8*)
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE3:.*]] to i8*)
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE4:.*]] to i8*)
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE5:.*]] to i8*)
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// CHECK: store i8* bitcast (void (i8*)* @[[TEST_BLOCK_INVOKE6:.*]] to i8*)
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE0]]({{.*}}) #[[DISABLEATTR:.*]] {
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE1]]({{.*}}) #[[ENABLEATTR:.*]] {
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE2]]({{.*}}) #[[DISABLEATTR]] {
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE3]]({{.*}}) #[[DISABLEATTR]] {
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE4]]({{.*}}) #[[ENABLEATTR]] {
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE5]]({{.*}}) #[[DISABLEATTR]] {
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// CHECK: define internal void @[[TEST_BLOCK_INVOKE6]]({{.*}}) #[[ENABLEATTR]] {
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// CHECK: attributes #[[ENABLEATTR]] = {{{.*}}"disable-tail-calls"="false"{{.*}}}
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// CHECK: attributes #[[DISABLEATTR]] = {{{.*}}"disable-tail-calls"="true"{{.*}}}
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typedef void (^BlockTy)(void);
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typedef void (*NoEscapeFnTy)(__attribute__((noescape)) BlockTy);
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void callee0(__attribute__((noescape)) BlockTy);
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void callee1(BlockTy);
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__attribute__((objc_root_class))
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@interface C0
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-(void)m0:(__attribute__((noescape)) BlockTy)p;
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-(void)m1:(BlockTy)p;
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@end
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@implementation C0
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-(void)m0:(__attribute__((noescape)) BlockTy)p {}
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-(void)m1:(BlockTy)p {}
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@end
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NoEscapeFnTy noescapefunc;
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void test(id a, C0 *c0) {
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BlockTy b0 = ^{ (void)a; }; // disable tail-call optimization.
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callee0(b0);
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callee0(^{ (void)a; }); // enable tail-call optimization.
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callee1(^{ (void)a; }); // disable tail-call optimization.
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BlockTy b1 = ^{ (void)a; }; // disable tail-call optimization.
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[c0 m0:b1];
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[c0 m0:^{ (void)a; }]; // enable tail-call optimization.
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[c0 m1:^{ (void)a; }]; // disable tail-call optimization.
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noescapefunc(^{ (void)a; }); // enable tail-call optimization.
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}
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