[gcc(refs/users/aoliva/heads/testme)] testsuite: enable use of cxa_atexit on tree-ssa cxa_atexit tests

[Alexandre Oliva]

https://gcc.gnu.org/g:f4b7dbb5fdcf84e6910f115925766616a3a8ae9c

commit f4b7dbb5fdcf84e6910f115925766616a3a8ae9c
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Fri Jan 16 19:22:58 2026 -0300

    testsuite: enable use of cxa_atexit on tree-ssa cxa_atexit tests
    
    The expected cxa_atexit calls and optimizations won't take place on
    targets that don't have -fuse-cxa-atexit enabled by default.  Enabling
    it explicitly is enough to meet the expectations of the cxa_atexit
    tests.
    
    
    for  gcc/testsuite/ChangeLog
    
            * g++.dg/tree-ssa/cxa_atexit-1.C: Enable -fuse-cxa-atexit.
            * g++.dg/tree-ssa/cxa_atexit-2.C: Likewise.
            * g++.dg/tree-ssa/cxa_atexit-3.C: Likewise.
            * g++.dg/tree-ssa/cxa_atexit-4.C: Likewise.
            * g++.dg/tree-ssa/cxa_atexit-5.C: Likewise.
            * g++.dg/tree-ssa/cxa_atexit-6.C: Likewise.

Diff:
---
 gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-1.C | 1 +
 gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-2.C | 1 +
 gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-3.C | 1 +
 gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-4.C | 1 +
 gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-5.C | 1 +
 gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-6.C | 1 +
 6 files changed, 6 insertions(+)

diff --git a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-1.C b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-1.C
index 82ff3d2b7783..2c725402c7da 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-1.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-1.C
@@ -1,6 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-cddce1-details -fdump-tree-optimized" } */
 // { dg-require-effective-target cxa_atexit }
+// { dg-additional-options "-fuse-cxa-atexit" }
 /* PR tree-optimization/19661 */
 
 /* The call to axexit should be removed as A::~A() is a pure/const function call
diff --git a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-2.C b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-2.C
index 726b6d7f1561..6a8c3de84870 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-2.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-2.C
@@ -1,6 +1,7 @@
 /* { dg-do compile { target c++11 } } */
 /* { dg-options "-O2 -fdump-tree-cddce1-details -fdump-tree-optimized" } */
 // { dg-require-effective-target cxa_atexit }
+// { dg-additional-options "-fuse-cxa-atexit" }
 /* PR tree-optimization/19661 */
 
 /* The call to axexit should be not removed as A::~A() as it marked with noipa.  */
diff --git a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-3.C b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-3.C
index 42cc7ccb11ba..cf0f086ca3b9 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-3.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-3.C
@@ -1,6 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-cddce1-details -fdump-tree-optimized" } */
 // { dg-require-effective-target cxa_atexit }
+// { dg-additional-options "-fuse-cxa-atexit" }
 /* PR tree-optimization/19661 */
 
 /* We should not remove the call to atexit as A::~A is unknown.  */
diff --git a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-4.C b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-4.C
index 591c1c0552a1..18467ed9b6fb 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-4.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-4.C
@@ -1,6 +1,7 @@
 /* { dg-do compile { target c++11 } } */
 /* { dg-options "-O2 -fdump-tree-cddce1-details -fdump-tree-optimized -w" } */
 // { dg-require-effective-target cxa_atexit }
+// { dg-additional-options "-fuse-cxa-atexit" }
 /* PR tree-optimization/19661 */
 
 /* The call to axexit should be removed as A::~A() is a pure/const function call
diff --git a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-5.C b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-5.C
index e59f70c1ed4a..c37cd353a09c 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-5.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-5.C
@@ -1,6 +1,7 @@
 /* { dg-do compile { target c++20 } } */
 /* { dg-options "-O2 -fdump-tree-dce2-details -fdump-tree-optimized" } */
 // { dg-require-effective-target cxa_atexit }
+// { dg-additional-options "-fuse-cxa-atexit" }
 /* PR tree-optimization/19661 */
 
 /* The call to axexit should be removed as constant_init::~constant_init is a pure/const function call
diff --git a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-6.C b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-6.C
index e22036067dd4..cbdfe723afb9 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-6.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/cxa_atexit-6.C
@@ -2,6 +2,7 @@
 /* { dg-require-effective-target fpic } */
 /* { dg-options "-O2 -fdump-tree-cddce1-details -fdump-tree-optimized -fPIC" } */
 // { dg-require-effective-target cxa_atexit }
+// { dg-additional-options "-fuse-cxa-atexit" }
 /* This test is not appropriate for targets where non-weak functions defined
    in the TU always bind locally; see PR114982.  */
 /* { dg-skip-if "PR114982" { *-*-darwin* } } */