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      1 // RUN: %clang_cc1 -emit-llvm -triple i386-linux-gnu -o %t %s
      2 // RUN: FileCheck --input-file=%t %s
      3 
      4 // CHECK: @t5 = weak global i32 2
      5 int t5 __attribute__((weak)) = 2;
      6 
      7 // CHECK: @t13 = global %struct.s0 zeroinitializer, section "SECT"
      8 struct s0 { int x; };
      9 struct s0 t13 __attribute__((section("SECT"))) = { 0 };
     10 
     11 // CHECK: @t14.x = internal global i32 0, section "SECT"
     12 void t14(void) {
     13   static int x __attribute__((section("SECT"))) = 0;
     14 }
     15 
     16 // CHECK: @t18 = global i32 1, align 4
     17 extern int t18 __attribute__((weak_import));
     18 int t18 = 1;
     19 
     20 // CHECK: @t16 = extern_weak global i32
     21 extern int t16 __attribute__((weak_import));
     22 
     23 // CHECK: @t6 = common protected global i32 0
     24 int t6 __attribute__((visibility("protected")));
     25 
     26 // CHECK: @t12 = global i32 0, section "SECT"
     27 int t12 __attribute__((section("SECT")));
     28 
     29 // CHECK: @t9 = alias weak bitcast (void ()* @__t8 to void (...)*)
     30 void __t8() {}
     31 void t9() __attribute__((weak, alias("__t8")));
     32 
     33 // CHECK: declare extern_weak i32 @t15()
     34 int __attribute__((weak_import)) t15(void);
     35 int t17() {
     36   return t15() + t16;
     37 }
     38 
     39 // CHECK: define void @t1() [[NR:#[0-9]+]] {
     40 void t1() __attribute__((noreturn));
     41 void t1() { while (1) {} }
     42 
     43 // CHECK: define void @t2() [[NUW:#[0-9]+]] {
     44 void t2() __attribute__((nothrow));
     45 void t2() {}
     46 
     47 // CHECK: define weak void @t3() [[NUW]] {
     48 void t3() __attribute__((weak));
     49 void t3() {}
     50 
     51 // CHECK: define hidden void @t4() [[NUW]] {
     52 void t4() __attribute__((visibility("hidden")));
     53 void t4() {}
     54 
     55 // CHECK: define void @t7() [[NR]] {
     56 void t7() __attribute__((noreturn, nothrow));
     57 void t7() { while (1) {} }
     58 
     59 // CHECK: define void @t10() [[NUW]] section "SECT" {
     60 void t10(void) __attribute__((section("SECT")));
     61 void t10(void) {}
     62 // CHECK: define void @t11() [[NUW]] section "SECT" {
     63 void __attribute__((section("SECT"))) t11(void) {}
     64 
     65 // CHECK: define i32 @t19() [[NUW]] {
     66 extern int t19(void) __attribute__((weak_import));
     67 int t19(void) {
     68   return 10;
     69 }
     70 
     71 // CHECK:define void @t20() [[NUW]] {
     72 // CHECK: call void @abort()
     73 // CHECK-NEXT: unreachable
     74 void t20(void) {
     75   __builtin_abort();
     76 }
     77 
     78 void (__attribute__((fastcall)) *fptr)(int);
     79 void t21(void) {
     80   fptr(10);
     81 }
     82 // CHECK: [[FPTRVAR:%[a-z0-9]+]] = load void (i32)** @fptr
     83 // CHECK-NEXT: call x86_fastcallcc void [[FPTRVAR]](i32 inreg 10)
     84 
     85 
     86 // PR9356: We might want to err on this, but for now at least make sure we
     87 // use the section in the definition.
     88 void __attribute__((section(".foo"))) t22(void);
     89 void __attribute__((section(".bar"))) t22(void) {}
     90 
     91 // CHECK: define void @t22() [[NUW]] section ".bar"
     92 
     93 // CHECK: attributes [[NUW]] = { nounwind{{.*}} }
     94 // CHECK: attributes [[NR]] = { noreturn nounwind{{.*}} }
     95