From: Andi Kleen <ak@linux.intel.com>
To: gcc-patches@gcc.gnu.org
Cc: Andi Kleen <ak@linux.intel.com>
Subject: [PATCH v8 06/12] Add tests for C/C++ musttail attributes
Date: Sat, 22 Jun 2024 11:54:38 -0700 [thread overview]
Message-ID: <20240622185557.1589179-7-ak@linux.intel.com> (raw)
In-Reply-To: <20240622185557.1589179-1-ak@linux.intel.com>
Some adopted from the existing C musttail plugin tests.
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
next prev parent reply other threads:[~2024-06-22 18:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-22 18:54 Updated musttail patchkit Andi Kleen
2024-06-22 18:54 ` [PATCH v8 01/12] Improve must tail in RTL backend Andi Kleen
2024-06-22 18:54 ` [PATCH v8 02/12] Fix pro_and_epilogue for sibcalls at -O0 Andi Kleen
2024-06-22 18:54 ` [PATCH v8 03/12] Add a musttail generic attribute to the c-attribs table Andi Kleen
2024-06-22 18:54 ` [PATCH v8 04/12] C++: Support clang compatible [[musttail]] (PR83324) Andi Kleen
2024-06-22 18:54 ` [PATCH v8 05/12] C: Implement musttail attribute for returns Andi Kleen
2024-06-22 18:54 ` Andi Kleen [this message]
2024-06-22 18:54 ` [PATCH v8 07/12] Enable musttail tail conversion even when not optimizing Andi Kleen
2024-06-22 18:54 ` [PATCH v8 08/12] Give better error messages for musttail Andi Kleen
2024-06-22 18:54 ` [PATCH v8 09/12] Delay caller error reporting " Andi Kleen
2024-06-22 18:54 ` [PATCH v8 10/12] Add documentation for musttail attribute Andi Kleen
2024-06-22 18:54 ` [PATCH v8 11/12] Dump reason for missing tail call into dump file Andi Kleen
2024-06-22 18:54 ` [PATCH v8 12/12] Mark expand musttail error messages for translation Andi Kleen
2024-07-01 16:23 ` [PING] Re: Updated musttail patchkit Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240622185557.1589179-7-ak@linux.intel.com \
--to=ak@linux.intel.com \
--cc=gcc-patches@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).