[gcc r15-9396] tailc, expand: Small incremental tweak to tail call dump [PR119718]

[Jakub Jelinek via Gcc-cvs]

https://gcc.gnu.org/g:7e91bba6d53899689b00bd0c995b35f6586fcacd

commit r15-9396-g7e91bba6d53899689b00bd0c995b35f6586fcacd
Author: Jakub Jelinek <ja...@redhat.com>
Date:   Sat Apr 12 13:12:56 2025 +0200

    tailc, expand: Small incremental tweak to tail call dump [PR119718]
    
    Here is an optional incremental tweak to the previous patch.
    Instead of
    
    ./xgcc -B ./ -S -O2 -fdump-{tree-tailc,rtl-expand}-details pr119718.c ; 
grep -B1 '^\(;; \)\?Cannot tail-call:' pr119718.c.*
    pr119718.c.222t.tailc-_7 = bar (0);
    pr119718.c.222t.tailc:Cannot tail-call: call invocation refers to locals
    --
    pr119718.c.270r.expand-;; foo (1, 2, 3, 4, 5, 6, 7) [tail call]
    pr119718.c.270r.expand:;; Cannot tail-call: callee required more stack 
slots than the caller
    
    this dumps
    
    ./xgcc -B ./ -S -O2 -fdump-{tree-tailc,rtl-expand}-details pr119718.c ; 
grep '^\(;; \)\?Cannot tail-call:' pr119718.c.*
    pr119718.c.222t.tailc:Cannot tail-call: call invocation refers to locals: 
_7 = bar (0);
    pr119718.c.270r.expand:;; Cannot tail-call: callee required more stack 
slots than the caller: foo (1, 2, 3, 4, 5, 6, 7) [tail call]
    
    2025-04-12  Jakub Jelinek  <ja...@redhat.com>
    
            PR tree-optimization/119718
            * tree-tailcall.cc (maybe_error_musttail): Dump the GIMPLE at the
            end of the Cannot tail-call line rather than on the line before it.
            * calls.cc (maybe_complain_about_tail_call): Dump the GENERIC
            at the end of the ;; Cannot tail-call line rather than on the
            line before it.

Diff:
---
 gcc/calls.cc         | 4 ++--
 gcc/tree-tailcall.cc | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/gcc/calls.cc b/gcc/calls.cc
index dac953745993..372fab317f6f 100644
--- a/gcc/calls.cc
+++ b/gcc/calls.cc
@@ -1282,9 +1282,9 @@ maybe_complain_about_tail_call (tree call_expr, const 
char *reason)
       && dump_file
       && (dump_flags & TDF_DETAILS))
     {
-      fprintf (dump_file, ";; ");
+      fprintf (dump_file, ";; Cannot tail-call: %s: ", reason);
       print_generic_expr (dump_file, call_expr, TDF_SLIM);
-      fprintf (dump_file, "\n;; Cannot tail-call: %s\n", reason);
+      fprintf (dump_file, "\n");
     }
 }
 
diff --git a/gcc/tree-tailcall.cc b/gcc/tree-tailcall.cc
index 5949e0822a4e..d5c4c7bf2671 100644
--- a/gcc/tree-tailcall.cc
+++ b/gcc/tree-tailcall.cc
@@ -494,8 +494,8 @@ maybe_error_musttail (gcall *call, const char *err, bool 
diag_musttail)
     }
   if (dump_file && (dump_flags & TDF_DETAILS))
     {
+      fprintf (dump_file, "Cannot tail-call: %s: ", err);
       print_gimple_stmt (dump_file, call, 0, TDF_SLIM);
-      fprintf (dump_file, "Cannot tail-call: %s\n", err);
     }
 }