Message ID | 20240622185557.1589179-7-ak@linux.intel.com |
---|---|
State | New |
Headers | show |
Series | [v8,01/12] Improve must tail in RTL backend | expand |
On Sat, Jun 22, 2024 at 8:59 PM Andi Kleen <ak@linux.intel.com> wrote: > > Some adopted from the existing C musttail plugin tests. Looks good to me. > gcc/testsuite/ChangeLog: > > * c-c++-common/musttail1.c: New test. > * c-c++-common/musttail2.c: New test. > * c-c++-common/musttail3.c: New test. > * c-c++-common/musttail4.c: New test. > * c-c++-common/musttail7.c: New test. > * c-c++-common/musttail8.c: New test. > * g++.dg/musttail6.C: New test. > * g++.dg/musttail9.C: New test. > * g++.dg/musttail10.C: New test. > --- > gcc/testsuite/c-c++-common/musttail1.c | 14 ++++++ > gcc/testsuite/c-c++-common/musttail2.c | 33 ++++++++++++++ > gcc/testsuite/c-c++-common/musttail3.c | 29 +++++++++++++ > gcc/testsuite/c-c++-common/musttail4.c | 17 ++++++++ > gcc/testsuite/c-c++-common/musttail5.c | 28 ++++++++++++ > gcc/testsuite/c-c++-common/musttail7.c | 14 ++++++ > gcc/testsuite/c-c++-common/musttail8.c | 17 ++++++++ > gcc/testsuite/g++.dg/musttail10.C | 34 +++++++++++++++ > gcc/testsuite/g++.dg/musttail6.C | 59 ++++++++++++++++++++++++++ > gcc/testsuite/g++.dg/musttail9.C | 10 +++++ > 10 files changed, 255 insertions(+) > create mode 100644 gcc/testsuite/c-c++-common/musttail1.c > create mode 100644 gcc/testsuite/c-c++-common/musttail2.c > create mode 100644 gcc/testsuite/c-c++-common/musttail3.c > create mode 100644 gcc/testsuite/c-c++-common/musttail4.c > create mode 100644 gcc/testsuite/c-c++-common/musttail5.c > create mode 100644 gcc/testsuite/c-c++-common/musttail7.c > create mode 100644 gcc/testsuite/c-c++-common/musttail8.c > create mode 100644 gcc/testsuite/g++.dg/musttail10.C > create mode 100644 gcc/testsuite/g++.dg/musttail6.C > create mode 100644 gcc/testsuite/g++.dg/musttail9.C > > diff --git a/gcc/testsuite/c-c++-common/musttail1.c b/gcc/testsuite/c-c++-common/musttail1.c > new file mode 100644 > index 000000000000..74efcc2a0bc6 > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail1.c > @@ -0,0 +1,14 @@ > +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ > +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ > + > +int __attribute__((noinline,noclone,noipa)) > +callee (int i) > +{ > + return i * i; > +} > + > +int __attribute__((noinline,noclone,noipa)) > +caller (int i) > +{ > + [[gnu::musttail]] return callee (i + 1); > +} > diff --git a/gcc/testsuite/c-c++-common/musttail2.c b/gcc/testsuite/c-c++-common/musttail2.c > new file mode 100644 > index 000000000000..86f2c3d77404 > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail2.c > @@ -0,0 +1,33 @@ > +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ > + > +struct box { char field[256]; int i; }; > + > +int __attribute__((noinline,noclone,noipa)) > +test_2_callee (int i, struct box b) > +{ > + if (b.field[0]) > + return 5; > + return i * i; > +} > + > +int __attribute__((noinline,noclone,noipa)) > +test_2_caller (int i) > +{ > + struct box b; > + [[gnu::musttail]] return test_2_callee (i + 1, b); /* { dg-error "cannot tail-call: " } */ > +} > + > +extern void setjmp (void); > +void > +test_3 (void) > +{ > + [[gnu::musttail]] return setjmp (); /* { dg-error "cannot tail-call: " } */ > +} > + > +extern float f7(void); > + > +int > +test_6 (void) > +{ > + [[gnu::musttail]] return f7(); /* { dg-error "cannot tail-call: " } */ > +} > diff --git a/gcc/testsuite/c-c++-common/musttail3.c b/gcc/testsuite/c-c++-common/musttail3.c > new file mode 100644 > index 000000000000..ea9589c59ef2 > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail3.c > @@ -0,0 +1,29 @@ > +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ > + > +extern int foo2 (int x, ...); > + > +struct str > +{ > + int a, b; > +}; > + > +struct str > +cstruct (int x) > +{ > + if (x < 10) > + [[clang::musttail]] return cstruct (x + 1); > + return ((struct str){ x, 0 }); > +} > + > +int > +foo (int x) > +{ > + if (x < 10) > + [[clang::musttail]] return foo2 (x, 29); > + if (x < 100) > + { > + int k = foo (x + 1); > + [[clang::musttail]] return k; /* { dg-error "cannot tail-call: " } */ > + } > + return x; > +} > diff --git a/gcc/testsuite/c-c++-common/musttail4.c b/gcc/testsuite/c-c++-common/musttail4.c > new file mode 100644 > index 000000000000..23f4b5e1cd68 > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail4.c > @@ -0,0 +1,17 @@ > +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ > + > +struct box { char field[64]; int i; }; > + > +struct box __attribute__((noinline,noclone,noipa)) > +returns_struct (int i) > +{ > + struct box b; > + b.i = i * i; > + return b; > +} > + > +int __attribute__((noinline,noclone)) > +test_1 (int i) > +{ > + [[gnu::musttail]] return returns_struct (i * 5).i; /* { dg-error "cannot tail-call: " } */ > +} > diff --git a/gcc/testsuite/c-c++-common/musttail5.c b/gcc/testsuite/c-c++-common/musttail5.c > new file mode 100644 > index 000000000000..234da0d3f2a9 > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail5.c > @@ -0,0 +1,28 @@ > +/* { dg-do compile } */ > +/* { dg-options "-std=c23" { target c } } */ > +/* { dg-options "-std=gnu++11" { target c++ } } */ > + > +[[musttail]] int j; /* { dg-warning "attribute" } */ > +__attribute__((musttail)) int k; /* { dg-warning "attribute" } */ > + > +void foo(void) > +{ > + [[gnu::musttail]] j++; /* { dg-warning "attribute" } */ > + [[gnu::musttail]] if (k > 0) /* { dg-warning "attribute" } */ > + [[gnu::musttail]] k++; /* { dg-warning "attribute" } */ > +} > + > +int foo2(int p) > +{ > + [[gnu::musttail(1)]] return foo2(p + 1); /* { dg-error "\(before numeric constant|attribute\)" } */ > +} > + > +int i; > + > +int foo3(void) > +{ > + [[musttail]] i++; /* { dg-warning "attribute" } */ > + [[musttail]] if (i > 10) /* { dg-warning "attribute" } */ > + [[musttail]] return foo2(i); /* { dg-warning "attribute" } */ > + return 0; > +} > diff --git a/gcc/testsuite/c-c++-common/musttail7.c b/gcc/testsuite/c-c++-common/musttail7.c > new file mode 100644 > index 000000000000..c753a3fe9b2a > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail7.c > @@ -0,0 +1,14 @@ > +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ > +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ > + > +void __attribute__((noipa)) f() {} > + > +void f2() > +{ > + [[gnu::musttail]] return f2(); > +} > + > +void f3() > +{ > + [[gnu::musttail]] return f(); > +} > diff --git a/gcc/testsuite/c-c++-common/musttail8.c b/gcc/testsuite/c-c++-common/musttail8.c > new file mode 100644 > index 000000000000..9fa10e0b54c4 > --- /dev/null > +++ b/gcc/testsuite/c-c++-common/musttail8.c > @@ -0,0 +1,17 @@ > +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ > + > +float f1(void); > + > +int f2(void) > +{ > + [[gnu::musttail]] return f1 (); /* { dg-error "changed after call" } */ > +} > + > + > +int f3(int *); > + > +int f4(void) > +{ > + int x; > + [[gnu::musttail]] return f3(&x); /* { dg-error "\(refers to locals|other reasons\)" } */ > +} > diff --git a/gcc/testsuite/g++.dg/musttail10.C b/gcc/testsuite/g++.dg/musttail10.C > new file mode 100644 > index 000000000000..836958ad40fe > --- /dev/null > +++ b/gcc/testsuite/g++.dg/musttail10.C > @@ -0,0 +1,34 @@ > +/* { dg-do compile { target { tail_call } } } */ > +/* { dg-options "-std=gnu++11" } */ > +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ > + > +int f(); > + > +double h() { [[gnu::musttail]] return f(); } /* { dg-error "cannot tail-call" } */ > + > +template <class T> > +__attribute__((noinline, noclone, noipa)) > +T g1() { [[gnu::musttail]] return f(); } /* { dg-error "target is not able" "" { target powerpc*-*-* } } */ > + > +template <class T> > +__attribute__((noinline, noclone, noipa)) > +T g2() { [[gnu::musttail]] return f(); } /* { dg-error "cannot tail-call" } */ > + > +template <class T> > +__attribute__((noinline, noclone, noipa)) > +T g3() { [[gnu::musttail]] return f(); } /* { dg-error "cannot tail-call" } */ > + > +class C > +{ > + double x; > +public: > + C(double x) : x(x) {} > + ~C() { asm("":::"memory"); } > +}; > + > +int main() > +{ > + g1<int>(); > + g2<double>(); > + g3<C>(); > +} > diff --git a/gcc/testsuite/g++.dg/musttail6.C b/gcc/testsuite/g++.dg/musttail6.C > new file mode 100644 > index 000000000000..cc733edc73cd > --- /dev/null > +++ b/gcc/testsuite/g++.dg/musttail6.C > @@ -0,0 +1,59 @@ > +/* { dg-do compile { target { tail_call } } } */ > +/* { dg-skip-if "powerpc does not support sibcall to templates" { powerpc*-*-* } } */ > +/* { dg-options "-std=gnu++11" } */ > +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ > + > +class Foo { > +public: > + int a, b; > + Foo(int a, int b) : a(a), b(b) {} > +}; > + > +Foo __attribute__((noinline,noclone,noipa)) > +callee (int i) > +{ > + return Foo(i, i+1); > +} > + > +Foo __attribute__((noinline,noclone,noipa)) > +caller (int i) > +{ > + [[gnu::musttail]] return callee (i + 1); > +} > + > +template<typename T> > +T __attribute__((noinline,noclone,noipa)) foo (T i) > +{ > + return i + 1; > +} > + > +int > +caller2 (int k) > +{ > + [[gnu::musttail]] return foo<int>(1); > +} > + > +template<typename T> > +T caller3 (T v) > +{ > + [[gnu::musttail]] return foo<T>(v); > +} > + > +int call3(int i) > +{ > + [[gnu::musttail]] return caller3<int>(i + 1); > +} > + > +struct Bar { > + int a; > + Bar(int a) : a(a) {} > + Bar operator+(Bar o) { return Bar(a + o.a); } > +}; > + > +#if __OPTIMIZE__ >= 1 > +Bar > +caller4 (Bar k) > +{ > + [[gnu::musttail]] return caller3<Bar>(Bar(99)); > +} > +#endif > diff --git a/gcc/testsuite/g++.dg/musttail9.C b/gcc/testsuite/g++.dg/musttail9.C > new file mode 100644 > index 000000000000..fb0262e751be > --- /dev/null > +++ b/gcc/testsuite/g++.dg/musttail9.C > @@ -0,0 +1,10 @@ > +/* { dg-do compile { target { tail_call } } } */ > +/* { dg-options "-std=gnu++11" } */ > +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ > + > +extern void foo(); > + > +void f() noexcept > +{ > + [[gnu::musttail]] return foo(); /* { dg-error "call may throw exception that does not propagate" } */ > +} > -- > 2.45.2 >
diff --git a/gcc/testsuite/c-c++-common/musttail1.c b/gcc/testsuite/c-c++-common/musttail1.c new file mode 100644 index 000000000000..74efcc2a0bc6 --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail1.c @@ -0,0 +1,14 @@ +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ + +int __attribute__((noinline,noclone,noipa)) +callee (int i) +{ + return i * i; +} + +int __attribute__((noinline,noclone,noipa)) +caller (int i) +{ + [[gnu::musttail]] return callee (i + 1); +} diff --git a/gcc/testsuite/c-c++-common/musttail2.c b/gcc/testsuite/c-c++-common/musttail2.c new file mode 100644 index 000000000000..86f2c3d77404 --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail2.c @@ -0,0 +1,33 @@ +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ + +struct box { char field[256]; int i; }; + +int __attribute__((noinline,noclone,noipa)) +test_2_callee (int i, struct box b) +{ + if (b.field[0]) + return 5; + return i * i; +} + +int __attribute__((noinline,noclone,noipa)) +test_2_caller (int i) +{ + struct box b; + [[gnu::musttail]] return test_2_callee (i + 1, b); /* { dg-error "cannot tail-call: " } */ +} + +extern void setjmp (void); +void +test_3 (void) +{ + [[gnu::musttail]] return setjmp (); /* { dg-error "cannot tail-call: " } */ +} + +extern float f7(void); + +int +test_6 (void) +{ + [[gnu::musttail]] return f7(); /* { dg-error "cannot tail-call: " } */ +} diff --git a/gcc/testsuite/c-c++-common/musttail3.c b/gcc/testsuite/c-c++-common/musttail3.c new file mode 100644 index 000000000000..ea9589c59ef2 --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail3.c @@ -0,0 +1,29 @@ +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ + +extern int foo2 (int x, ...); + +struct str +{ + int a, b; +}; + +struct str +cstruct (int x) +{ + if (x < 10) + [[clang::musttail]] return cstruct (x + 1); + return ((struct str){ x, 0 }); +} + +int +foo (int x) +{ + if (x < 10) + [[clang::musttail]] return foo2 (x, 29); + if (x < 100) + { + int k = foo (x + 1); + [[clang::musttail]] return k; /* { dg-error "cannot tail-call: " } */ + } + return x; +} diff --git a/gcc/testsuite/c-c++-common/musttail4.c b/gcc/testsuite/c-c++-common/musttail4.c new file mode 100644 index 000000000000..23f4b5e1cd68 --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail4.c @@ -0,0 +1,17 @@ +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ + +struct box { char field[64]; int i; }; + +struct box __attribute__((noinline,noclone,noipa)) +returns_struct (int i) +{ + struct box b; + b.i = i * i; + return b; +} + +int __attribute__((noinline,noclone)) +test_1 (int i) +{ + [[gnu::musttail]] return returns_struct (i * 5).i; /* { dg-error "cannot tail-call: " } */ +} diff --git a/gcc/testsuite/c-c++-common/musttail5.c b/gcc/testsuite/c-c++-common/musttail5.c new file mode 100644 index 000000000000..234da0d3f2a9 --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail5.c @@ -0,0 +1,28 @@ +/* { dg-do compile } */ +/* { dg-options "-std=c23" { target c } } */ +/* { dg-options "-std=gnu++11" { target c++ } } */ + +[[musttail]] int j; /* { dg-warning "attribute" } */ +__attribute__((musttail)) int k; /* { dg-warning "attribute" } */ + +void foo(void) +{ + [[gnu::musttail]] j++; /* { dg-warning "attribute" } */ + [[gnu::musttail]] if (k > 0) /* { dg-warning "attribute" } */ + [[gnu::musttail]] k++; /* { dg-warning "attribute" } */ +} + +int foo2(int p) +{ + [[gnu::musttail(1)]] return foo2(p + 1); /* { dg-error "\(before numeric constant|attribute\)" } */ +} + +int i; + +int foo3(void) +{ + [[musttail]] i++; /* { dg-warning "attribute" } */ + [[musttail]] if (i > 10) /* { dg-warning "attribute" } */ + [[musttail]] return foo2(i); /* { dg-warning "attribute" } */ + return 0; +} diff --git a/gcc/testsuite/c-c++-common/musttail7.c b/gcc/testsuite/c-c++-common/musttail7.c new file mode 100644 index 000000000000..c753a3fe9b2a --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail7.c @@ -0,0 +1,14 @@ +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ + +void __attribute__((noipa)) f() {} + +void f2() +{ + [[gnu::musttail]] return f2(); +} + +void f3() +{ + [[gnu::musttail]] return f(); +} diff --git a/gcc/testsuite/c-c++-common/musttail8.c b/gcc/testsuite/c-c++-common/musttail8.c new file mode 100644 index 000000000000..9fa10e0b54c4 --- /dev/null +++ b/gcc/testsuite/c-c++-common/musttail8.c @@ -0,0 +1,17 @@ +/* { dg-do compile { target { tail_call && { c || c++11 } } } } */ + +float f1(void); + +int f2(void) +{ + [[gnu::musttail]] return f1 (); /* { dg-error "changed after call" } */ +} + + +int f3(int *); + +int f4(void) +{ + int x; + [[gnu::musttail]] return f3(&x); /* { dg-error "\(refers to locals|other reasons\)" } */ +} diff --git a/gcc/testsuite/g++.dg/musttail10.C b/gcc/testsuite/g++.dg/musttail10.C new file mode 100644 index 000000000000..836958ad40fe --- /dev/null +++ b/gcc/testsuite/g++.dg/musttail10.C @@ -0,0 +1,34 @@ +/* { dg-do compile { target { tail_call } } } */ +/* { dg-options "-std=gnu++11" } */ +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ + +int f(); + +double h() { [[gnu::musttail]] return f(); } /* { dg-error "cannot tail-call" } */ + +template <class T> +__attribute__((noinline, noclone, noipa)) +T g1() { [[gnu::musttail]] return f(); } /* { dg-error "target is not able" "" { target powerpc*-*-* } } */ + +template <class T> +__attribute__((noinline, noclone, noipa)) +T g2() { [[gnu::musttail]] return f(); } /* { dg-error "cannot tail-call" } */ + +template <class T> +__attribute__((noinline, noclone, noipa)) +T g3() { [[gnu::musttail]] return f(); } /* { dg-error "cannot tail-call" } */ + +class C +{ + double x; +public: + C(double x) : x(x) {} + ~C() { asm("":::"memory"); } +}; + +int main() +{ + g1<int>(); + g2<double>(); + g3<C>(); +} diff --git a/gcc/testsuite/g++.dg/musttail6.C b/gcc/testsuite/g++.dg/musttail6.C new file mode 100644 index 000000000000..cc733edc73cd --- /dev/null +++ b/gcc/testsuite/g++.dg/musttail6.C @@ -0,0 +1,59 @@ +/* { dg-do compile { target { tail_call } } } */ +/* { dg-skip-if "powerpc does not support sibcall to templates" { powerpc*-*-* } } */ +/* { dg-options "-std=gnu++11" } */ +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ + +class Foo { +public: + int a, b; + Foo(int a, int b) : a(a), b(b) {} +}; + +Foo __attribute__((noinline,noclone,noipa)) +callee (int i) +{ + return Foo(i, i+1); +} + +Foo __attribute__((noinline,noclone,noipa)) +caller (int i) +{ + [[gnu::musttail]] return callee (i + 1); +} + +template<typename T> +T __attribute__((noinline,noclone,noipa)) foo (T i) +{ + return i + 1; +} + +int +caller2 (int k) +{ + [[gnu::musttail]] return foo<int>(1); +} + +template<typename T> +T caller3 (T v) +{ + [[gnu::musttail]] return foo<T>(v); +} + +int call3(int i) +{ + [[gnu::musttail]] return caller3<int>(i + 1); +} + +struct Bar { + int a; + Bar(int a) : a(a) {} + Bar operator+(Bar o) { return Bar(a + o.a); } +}; + +#if __OPTIMIZE__ >= 1 +Bar +caller4 (Bar k) +{ + [[gnu::musttail]] return caller3<Bar>(Bar(99)); +} +#endif diff --git a/gcc/testsuite/g++.dg/musttail9.C b/gcc/testsuite/g++.dg/musttail9.C new file mode 100644 index 000000000000..fb0262e751be --- /dev/null +++ b/gcc/testsuite/g++.dg/musttail9.C @@ -0,0 +1,10 @@ +/* { dg-do compile { target { tail_call } } } */ +/* { dg-options "-std=gnu++11" } */ +/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */ + +extern void foo(); + +void f() noexcept +{ + [[gnu::musttail]] return foo(); /* { dg-error "call may throw exception that does not propagate" } */ +}