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      1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fblocks -fexceptions -fobjc-exceptions -O2 -disable-llvm-optzns -o - %s | FileCheck %s
      2 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fblocks -fexceptions -fobjc-exceptions -disable-llvm-optzns -o - %s | FileCheck -check-prefix=NO-METADATA %s
      3 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fblocks -fexceptions -fobjc-exceptions -O2 -disable-llvm-optzns -o - %s -fobjc-arc-exceptions | FileCheck -check-prefix=NO-METADATA %s
      4 
      5 // The front-end should emit clang.arc.no_objc_arc_exceptions in -fobjc-arc-exceptions
      6 // mode when optimization is enabled, and not otherwise.
      7 
      8 void thrower(void);
      9 void not(void) __attribute__((nothrow));
     10 
     11 // CHECK-LABEL: define void @test0(
     12 // CHECK: call void @thrower(), !clang.arc.no_objc_arc_exceptions !
     13 // CHECK: call void @not() [[NUW:#[0-9]+]], !clang.arc.no_objc_arc_exceptions !
     14 // NO-METADATA-LABEL: define void @test0(
     15 // NO-METADATA-NOT: !clang.arc.no_objc_arc_exceptions
     16 // NO-METADATA: }
     17 void test0(void) {
     18   thrower();
     19   not();
     20 }
     21 
     22 // CHECK-LABEL: define void @test1(
     23 // CHECK: call void @thrower(), !clang.arc.no_objc_arc_exceptions !
     24 // CHECK: call void @not() [[NUW]], !clang.arc.no_objc_arc_exceptions !
     25 // NO-METADATA-LABEL: define void @test1(
     26 // NO-METADATA-NOT: !clang.arc.no_objc_arc_exceptions
     27 // NO-METADATA: }
     28 void test1(id x) {
     29   id y = x;
     30   thrower();
     31   not();
     32 }
     33 
     34 void NSLog(id, ...);
     35 
     36 // CHECK-LABEL: define void @test2(
     37 // CHECK: invoke void (i8*, ...) @NSLog(i8* bitcast (%struct.NSConstantString* @_unnamed_cfstring_ to i8*), i32* %{{.*}})
     38 // CHECK:   to label %{{.*}} unwind label %{{.*}}, !clang.arc.no_objc_arc_exceptions !
     39 // NO-METADATA-LABEL: define void @test2(
     40 // NO-METADATA-NOT: !clang.arc.no_objc_arc_exceptions
     41 // NO-METADATA: }
     42 void test2(void) {
     43     @autoreleasepool {
     44         __attribute__((__blocks__(byref))) int x;
     45         NSLog(@"Address of x outside of block: %p", &x);
     46     }
     47 }
     48 
     49 // CHECK-LABEL: define void @test3(
     50 // CHECK: invoke void %{{.*}}(i8* %{{.*}})
     51 // CHECK:   to label %{{.*}} unwind label %{{.*}}, !clang.arc.no_objc_arc_exceptions !
     52 // NO-METADATA-LABEL: define void @test3(
     53 // NO-METADATA-NOT: !clang.arc.no_objc_arc_exceptions
     54 // NO-METADATA: }
     55 void test3(void) {
     56     @autoreleasepool {
     57         __attribute__((__blocks__(byref))) int x;
     58         ^{
     59             NSLog(@"Address of x in non-assigned block: %p", &x);
     60         }();
     61     }
     62 }
     63 
     64 // CHECK-LABEL: define void @test4(
     65 // CHECK: invoke void %{{.*}}(i8* %{{.*}})
     66 // CHECK:   to label %{{.*}} unwind label %{{.*}}, !clang.arc.no_objc_arc_exceptions !
     67 // NO-METADATA-LABEL: define void @test4(
     68 // NO-METADATA-NOT: !clang.arc.no_objc_arc_exceptions
     69 // NO-METADATA: }
     70 void test4(void) {
     71     @autoreleasepool {
     72         __attribute__((__blocks__(byref))) int x;
     73         void (^b)(void) = ^{
     74             NSLog(@"Address of x in assigned block: %p", &x);
     75         };
     76         b();
     77     }
     78 }
     79 
     80 // CHECK: attributes [[NUW]] = { nounwind }
     81