clang/test/CodeGen/patchable-function-entry.c

   1 // RUN: %clang_cc1 -triple aarch64 -emit-llvm %s -o - | FileCheck %s
   2 // RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -fpatchable-function-entry=1 -o - | FileCheck --check-prefixes=CHECK,OPT %s
   3 // RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -fms-hotpatch -o - | FileCheck --check-prefixes=HOTPATCH %s
   4
   5 // CHECK: define{{.*}} void @f0() #0
   6 __attribute__((patchable_function_entry(0))) void f0(void) {}
   7
   8 // CHECK: define{{.*}} void @f00() #0
   9 __attribute__((patchable_function_entry(0, 0))) void f00(void) {}
  10
  11 // CHECK: define{{.*}} void @f2() #1
  12 __attribute__((patchable_function_entry(2))) void f2(void) {}
  13
  14 // CHECK: define{{.*}} void @f20() #1
  15 __attribute__((patchable_function_entry(2, 0))) void f20(void) {}
  16
  17 // CHECK: define{{.*}} void @f20decl() #1
  18 __attribute__((patchable_function_entry(2, 0))) void f20decl(void);
  19 void f20decl(void) {}
  20
  21 // CHECK: define{{.*}} void @f44() #2
  22 __attribute__((patchable_function_entry(4, 4))) void f44(void) {}
  23
  24 // CHECK: define{{.*}} void @f52() #3
  25 __attribute__((patchable_function_entry(5, 2))) void f52(void) {}
  26
  27 // OPT: define{{.*}} void @f() #4
  28 void f(void) {}
  29
  30 /// No need to emit "patchable-function-entry"="0"
  31 // CHECK: attributes #0 = { {{.*}}
  32 // CHECK-NOT: "patchable-function-entry"
  33
  34 // CHECK: attributes #1 = { {{.*}} "patchable-function-entry"="2"
  35 // CHECK: attributes #2 = { {{.*}} "patchable-function-entry"="0" "patchable-function-prefix"="4"
  36 // CHECK: attributes #3 = { {{.*}} "patchable-function-entry"="3" "patchable-function-prefix"="2"
  37 // OPT:   attributes #4 = { {{.*}} "patchable-function-entry"="1"
  38 // HOTPATCH: attributes #0 = { {{.*}} "patchable-function"="prologue-short-redirect"
  39 // HOTPATCH: attributes #1 = { {{.*}} "patchable-function"="prologue-short-redirect"
  40 // HOTPATCH: attributes #2 = { {{.*}} "patchable-function"="prologue-short-redirect"
  41 // HOTPATCH: attributes #3 = { {{.*}} "patchable-function"="prologue-short-redirect"