llvm-project/clang/test/Sema/arm-interrupt-attr.c

// RUN: %clang_cc1 %s -triple arm-apple-darwin  -target-feature +vfp2 -verify -fsyntax-only
// RUN: %clang_cc1 %s -triple thumb-apple-darwin  -target-feature +vfp3 -verify -fsyntax-only
// RUN: %clang_cc1 %s -triple armeb-none-eabi  -target-feature +vfp4 -verify -fsyntax-only
// RUN: %clang_cc1 %s -triple thumbeb-none-eabi  -target-feature +neon -verify -fsyntax-only
// RUN: %clang_cc1 %s -triple thumbeb-none-eabi -target-feature +neon -target-feature +soft-float -DSOFT -verify -fsyntax-only

__attribute__((interrupt(IRQ))) void foo() {} // expected-error {{'interrupt' attribute requires a string}}
__attribute__((interrupt("irq"))) void foo1() {} // expected-warning {{'interrupt' attribute argument not supported: irq}}

__attribute__((interrupt("IRQ", 1))) void foo2() {} // expected-error {{'interrupt' attribute takes no more than 1 argument}}

__attribute__((interrupt("IRQ"))) void foo3() {}
__attribute__((interrupt("FIQ"))) void foo4() {}
__attribute__((interrupt("SWI"))) void foo5() {}
__attribute__((interrupt("ABORT"))) void foo6() {}
__attribute__((interrupt("UNDEF"))) void foo7() {}

__attribute__((interrupt)) void foo8() {}
__attribute__((interrupt())) void foo9() {}
__attribute__((interrupt(""))) void foo10() {}

void callee1();
__attribute__((interrupt("IRQ"))) void callee2();
void caller1() {
  callee1();
  callee2();
}

#ifndef SOFT
__attribute__((interrupt("IRQ"))) void caller2() {
  callee1(); // expected-warning {{call to function without interrupt attribute could clobber interruptee's VFP registers}}
  callee2();
}

void (*callee3)();
__attribute__((interrupt("IRQ"))) void caller3() {
  callee3(); // expected-warning {{call to function without interrupt attribute could clobber interruptee's VFP registers}}
}
#else
__attribute__((interrupt("IRQ"))) void caller2() {
  callee1();
  callee2();
}

void (*callee3)();
__attribute__((interrupt("IRQ"))) void caller3() {
  callee3();
}
#endif