8043d5a964
The ability to specify alignment was recently added, and it's an important property which we should ensure is set as expected by Clang. (Especially before making further changes to Clang's code in this area.) But, because it's on the end of the lines, the existing tests all ignore it. Therefore, update all the tests to also verify the expected alignment for atomicrmw and cmpxchg. While I was in there, I also updated uses of 'load atomic' and 'store atomic', and added the memory ordering, where that was missing.
127 lines
4.6 KiB
C++
127 lines
4.6 KiB
C++
// RUN: %clang_cc1 -emit-llvm -std=c++1z %s -o - -triple=x86_64-linux-gnu | FileCheck %s
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struct S { S(); ~S(); };
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @global)
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S global;
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// CHECK-LABEL: define {{.*}}global_var_init
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// FIXME: Do we really need thread-safe initialization here? We don't run
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// global ctors on multiple threads. (If we were to do so, we'd need thread-safe
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// init for B<int>::member and B<int>::inline_member too.)
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// CHECK: load atomic i8, i8* bitcast (i64* @_ZGV13inline_global to i8*) acquire, align 8
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @inline_global)
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inline S inline_global;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @thread_local_global)
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thread_local S thread_local_global;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGV26thread_local_inline_global to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @thread_local_inline_global)
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thread_local inline S thread_local_inline_global;
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struct A {
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static S member;
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static thread_local S thread_local_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load atomic i8, i8* bitcast (i64* @_ZGVN1A13inline_memberE to i8*) acquire, align 8
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1A13inline_memberE)
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static inline S inline_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1A26thread_local_inline_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1A26thread_local_inline_memberE)
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static thread_local inline S thread_local_inline_member;
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};
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// CHECK-LABEL: define{{.*}} void @_Z1fv()
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void f() {
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// CHECK: load atomic i8, i8* bitcast (i64* @_ZGVZ1fvE12static_local to i8*) acquire, align 8
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_LOCAL:[0-9]*]]
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static S static_local;
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// CHECK: load i8, i8* @_ZGVZ1fvE19static_thread_local,
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_THREAD_LOCAL:[0-9]*]]
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static thread_local S static_thread_local;
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}
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1A6memberE)
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S A::member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1A19thread_local_memberE)
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thread_local S A::thread_local_member;
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template <typename T> struct B {
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE6memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1BIiE6memberE)
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static S member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE13inline_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1BIiE13inline_memberE)
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static inline S inline_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE19thread_local_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1BIiE19thread_local_memberE)
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static thread_local S thread_local_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE26thread_local_inline_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* {{[^,]*}} @_ZN1BIiE26thread_local_inline_memberE)
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static thread_local inline S thread_local_inline_member;
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};
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template<typename T> S B<T>::member;
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template<typename T> thread_local S B<T>::thread_local_member;
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template<typename ...T> void use(T &...);
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void use_b() {
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use(B<int>::member, B<int>::inline_member, B<int>::thread_local_member,
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B<int>::thread_local_inline_member);
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}
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// CHECK-LABEL: define {{.*}}tls_init()
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// CHECK: load i8, i8* @__tls_guard, align 1
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_THREAD_LOCAL]]
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// CHECK-DAG: ![[WEIGHTS_THREAD_LOCAL]] = !{!"branch_weights", i32 1, i32 1023}
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// CHECK-DAG: ![[WEIGHTS_LOCAL]] = !{!"branch_weights", i32 1, i32 1048575}
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