| // RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 %s -emit-llvm -o - | FileCheck %s |
| |
| void t1(void) __attribute__((naked)); |
| |
| // Basic functionality check |
| // (Note that naked needs to imply noinline to work properly.) |
| // CHECK: define{{.*}} void @t1() [[NAKED_OPTNONE:#[0-9]+]] { |
| void t1(void) |
| { |
| } |
| |
| // Make sure this doesn't explode in the verifier. |
| // (It doesn't really make sense, but it isn't invalid.) |
| // CHECK: define{{.*}} void @t2() [[NAKED:#[0-9]+]] { |
| __attribute((naked, always_inline)) void t2(void) { |
| } |
| |
| // Make sure not to generate prolog or epilog for naked functions. |
| __attribute((naked)) void t3(int x) { |
| // CHECK: define{{.*}} void @t3(i32 noundef %0) |
| // CHECK-NOT: alloca |
| // CHECK-NOT: store |
| // CHECK: unreachable |
| } |
| |
| // Make sure naked functions do not attempt to evaluate parameters with a |
| // variably-modified type. Naked functions get no prolog, so this evaluation |
| // should not take place. |
| __attribute__((naked)) void t4(int len, char x[len]) { |
| // CHECK: define{{.*}} void @t4(i32 noundef{{.*}}, ptr noundef{{.*}}) |
| // CHECK: unreachable |
| } |
| |
| // CHECK: attributes [[NAKED_OPTNONE]] = { naked noinline nounwind optnone{{.*}} } |
| // CHECK: attributes [[NAKED]] = { naked noinline nounwind{{.*}} } |
