[gcc r15-2384] Revert "PR116080: Fix tail call dejagnu checks"

[Andi Kleen via Gcc-cvs]

https://gcc.gnu.org/g:a7d6f7327e9211fbb4a800c06d00c4555dbffcec

commit r15-2384-ga7d6f7327e9211fbb4a800c06d00c4555dbffcec
Author: Andi Kleen <a...@gcc.gnu.org>
Date:   Mon Jul 29 10:17:43 2024 -0700

    Revert "PR116080: Fix tail call dejagnu checks"
    
    This reverts commit ee41cd863b7c38ee3bc415ea7154954aa6facca3.

Diff:
---
 gcc/testsuite/g++.dg/musttail10.C     |  2 +-
 gcc/testsuite/g++.dg/musttail6.C      |  2 +-
 gcc/testsuite/lib/target-supports.exp | 14 +++-----------
 3 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/gcc/testsuite/g++.dg/musttail10.C 
b/gcc/testsuite/g++.dg/musttail10.C
index bd75affa2220..ff7fcc7d8755 100644
--- a/gcc/testsuite/g++.dg/musttail10.C
+++ b/gcc/testsuite/g++.dg/musttail10.C
@@ -8,7 +8,7 @@ double g() { [[gnu::musttail]] return f<int>(); } /* { dg-error 
"cannot tail-cal
 
 template <class T>
 __attribute__((noinline, noclone, noipa))
-T g1() { [[gnu::musttail]] return f<T>(); } /* { dg-error "target is not able" 
"" { target { external_tail_call } } } */
+T g1() { [[gnu::musttail]] return f<T>(); } /* { dg-error "target is not able" 
"" { target powerpc*-*-* } } */
 
 template <class T>
 __attribute__((noinline, noclone, noipa))
diff --git a/gcc/testsuite/g++.dg/musttail6.C b/gcc/testsuite/g++.dg/musttail6.C
index 81f6d9f3ca77..5c6f69407ddb 100644
--- a/gcc/testsuite/g++.dg/musttail6.C
+++ b/gcc/testsuite/g++.dg/musttail6.C
@@ -1,6 +1,6 @@
 /* { dg-do compile { target { struct_tail_call } } } */
-/* { dg-require-effective-target external_tail_call } */
 /* A lot of architectures will not build this due to PR115606 and PR115607 */
+/* { dg-skip-if "powerpc does not support sibcall to templates" { powerpc*-*-* 
} } */
 /* { dg-options "-std=gnu++11" } */
 /* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */
 
diff --git a/gcc/testsuite/lib/target-supports.exp 
b/gcc/testsuite/lib/target-supports.exp
index 0a3946e82d4b..d368251ef9a4 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -12741,15 +12741,7 @@ proc check_effective_target_tail_call { } {
     return [check_no_messages_and_pattern tail_call ",SIBCALL" rtl-expand {
        __attribute__((__noipa__)) void foo (void) { }
        __attribute__((__noipa__)) void bar (void) { foo(); }
-    } {-fdump-rtl-expand-all}] ;# The "SIBCALL" note requires a detailed dump.
-}
-
-# Return 1 if the target can perform tail-calls for externals
-proc check_effective_target_external_tail_call { } {
-    return [check_no_messages_and_pattern tail_call ",SIBCALL" rtl-expand {
-       extern __attribute__((__noipa__)) void foo (void);
-       __attribute__((__noipa__)) void bar (void) { foo(); }
-    } {-fdump-rtl-expand-all}] ;# The "SIBCALL" note requires a detailed dump.
+    } {-O2 -fdump-rtl-expand-all}] ;# The "SIBCALL" note requires a detailed 
dump.
 }
 
 # Return 1 if the target can perform tail-call optimizations for structures
@@ -12759,9 +12751,9 @@ proc check_effective_target_struct_tail_call { } {
     return [check_no_messages_and_pattern tail_call ",SIBCALL" rtl-expand {
        // C++
        struct foo { int a, b; };
-       extern __attribute__((__noipa__)) struct foo foo (void);
+       __attribute__((__noipa__)) struct foo foo (void) { return {}; }
        __attribute__((__noipa__)) struct foo bar (void) { return foo(); }
-    } {-fdump-rtl-expand-all}] ;# The "SIBCALL" note requires a detailed dump.
+    } {-O2 -fdump-rtl-expand-all}] ;# The "SIBCALL" note requires a detailed 
dump.
 }
 
 # Return 1 if the target's calling sequence or its ABI