File: attr-naked.c

package info (click to toggle)
llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 493,332 kB
  • sloc: cpp: 2,698,100; ansic: 552,773; asm: 128,821; python: 121,589; objc: 105,054; sh: 21,174; lisp: 6,758; ml: 5,532; perl: 5,311; pascal: 5,245; makefile: 2,083; cs: 1,868; xml: 686; php: 212; csh: 117
file content (26 lines) | stat: -rw-r--r-- 746 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 %s -emit-llvm -o - | FileCheck %s

void t1() __attribute__((naked));

// Basic functionality check
// (Note that naked needs to imply noinline to work properly.)
// CHECK: define void @t1() [[NAKED:#[0-9]+]] {
void t1()
{
}

// 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]] {
__attribute((naked, always_inline)) void t2() {
}

// Make sure not to generate prolog or epilog for naked functions.
__attribute((naked)) void t3(int x) {
// CHECK: define void @t3(i32)
// CHECK-NOT: alloca
// CHECK-NOT: store
// CHECK: unreachable
}

// CHECK: attributes [[NAKED]] = { naked noinline nounwind{{.*}} }