gdb/testsuite: split gdb.dwarf2/macro-source-path.exp

Because it runs so many variations, the test
gdb.dwarf2/macro-source-path.exp takes about 2:40 minutes to run for me,
in a non-optimized build.  These days I often run all tests under
gdb.dwarf2, as a sanity test for my changes, and so I often have to wait
for this test to complete.

Split the test, to allow it to complete faster when running the
testsuite in parallel.  After this patch, running all the
gdb.dwarf2/macro-source-path-*.exp tests in parallel takes me about 1
minute.  It's more that I would expect, I would expect the time to be
divided by nearly 5, but it's already better than what we have now.

Change-Id: I07e4e1f234cf57d9b0c1c027f08061615714a4d5
Acked-By: Tom de Vries <tdevries@suse.de>

6 files changed, 371 insertions, 246 deletions

diff --git a/gdb/testsuite/gdb.dwarf2/macro-source-path-clang14-dw4.exp b/gdb/testsuite/gdb.dwarf2/macro-source-path-clang14-dw4.exp
new file mode 100644
index 0000000..c0c2635
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/macro-source-path-clang14-dw4.exp
@@ -0,0 +1,71 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2022-2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Generate binaries imitating different ways source file paths can be passed to
+# compilers.  Test printing macros from those binaries.
+
+# The do_test proc comes from macro-source-path.exp.tcl.
+source $srcdir/$subdir/macro-source-path.exp.tcl
+
+# When adding a test here, please consider adding an equivalent case to
+# `gdb.base/macro-source-path.exp`.
+
+# The following tests are based on the output of `clang-14 -gdwarf-4
+# -fdebug-macro -g3 <file>` (using its built-in assembler).  With -gdwarf-4,
+# clang produces a .debug_macinfo section, not a .debug_macro section.  But
+# this test still creates a .debug_macro section, that's good enough for what
+# we want to test.
+
+## test.c
+do_test filename 4 "test.c" 1 {
+} {
+    {"test.c" 0}
+}
+
+## ./test.c
+do_test dot-filename 4 "test.c" 1 {
+    "."
+} {
+    {"test.c" 1}
+}
+
+## ../cwd/test.c
+do_test dot-dot-cwd 4 "../cwd/test.c" 1 {
+    "../cwd"
+} {
+    {"test.c" 1}
+}
+
+## /tmp/cwd/test.c
+do_test absolute-cwd  4 "/tmp/cwd/test.c" 1 {
+} {
+    {"test.c" 0}
+}
+
+## ../other/test.c
+do_test dot-dot-other 4 "../other/test.c" 1 {
+    "../other"
+} {
+    {"test.c" 1}
+}
+
+## /tmp/other/test.c
+do_test absolute-other 4 "/tmp/other/test.c" 1 {
+    "/tmp"
+} {
+    {"other/test.c" 1}
+}
diff --git a/gdb/testsuite/gdb.dwarf2/macro-source-path-clang14-dw5.exp b/gdb/testsuite/gdb.dwarf2/macro-source-path-clang14-dw5.exp
new file mode 100644
index 0000000..0b3239e
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/macro-source-path-clang14-dw5.exp
@@ -0,0 +1,75 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2022-2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Generate binaries imitating different ways source file paths can be passed to
+# compilers.  Test printing macros from those binaries.
+
+# The do_test proc comes from macro-source-path.exp.tcl.
+source $srcdir/$subdir/macro-source-path.exp.tcl
+
+# When adding a test here, please consider adding an equivalent case to
+# `gdb.base/macro-source-path.exp`.
+
+# The following tests are based on the output of `clang-14 -gdwarf-5
+# -fdebug-macro -g3 <file>` (using its built-in assembler)
+
+## test.c
+do_test filename 5 "test.c" 0 {
+    "/tmp/cwd"
+} {
+    {"test.c" 0}
+}
+
+## ./test.c
+do_test dot-filename 5 "test.c" 1 {
+    "/tmp/cwd"
+    "."
+} {
+    {"test.c" 0}
+    {"test.c" 1}
+}
+
+## ../cwd/test.c
+do_test dot-dot-cwd 5 "../cwd/test.c" 0 {
+    "/tmp/cwd"
+} {
+    {"../cwd/test.c" 0}
+}
+
+## /tmp/cwd/test.c
+do_test absolute-cwd  5 "/tmp/cwd/test.c" 1 {
+    "/tmp/cwd"
+} {
+    {"/tmp/cwd/test.c" 0}
+    {"test.c" 0}
+}
+
+## ../other/test.c
+do_test dot-dot-other 5 "../other/test.c" 0 {
+    "/tmp/cwd"
+} {
+    {"../other/test.c" 0}
+}
+
+## /tmp/other/test.c
+do_test absolute-other 5 "/tmp/other/test.c" 1 {
+    "/tmp/cwd"
+    "/tmp"
+} {
+    {"/tmp/other/test.c" 0}
+    {"other/test.c" 1}
+}
diff --git a/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld234-dw5.exp b/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld234-dw5.exp
new file mode 100644
index 0000000..940f997
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld234-dw5.exp
@@ -0,0 +1,70 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2022-2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Generate binaries imitating different ways source file paths can be passed to
+# compilers.  Test printing macros from those binaries.
+
+# The do_test proc comes from macro-source-path.exp.tcl.
+source $srcdir/$subdir/macro-source-path.exp.tcl
+
+# When adding a test here, please consider adding an equivalent case to
+# `gdb.base/macro-source-path.exp`.
+
+# The following tests are based on the output of `gcc -gdwarf-5 -g3 <file>`,
+# gcc 11 paired with gas from binutils 2.34 (Ubuntu 20.04).  It generates a v5
+# .debug_macro section, but a v3 .debug_line section.
+
+## test.c
+do_test filename 3 "test.c" 1 {
+} {
+    {"test.c" 0}
+}
+
+## ./test.c
+do_test dot-filename 3 "./test.c" 1 {
+    "."
+} {
+    {"test.c" 1}
+}
+
+## ../cwd/test.c
+do_test dot-dot-cwd 3 "../cwd/test.c" 1 {
+    "../cwd"
+} {
+    {"test.c" 1}
+}
+
+## /tmp/cwd/test.c
+do_test absolute-cwd 3 "/tmp/cwd/test.c" 1 {
+    "/tmp/cwd"
+} {
+    {"test.c" 1}
+}
+
+## ../other/test.c
+do_test dot-dot-other 3 "../other/test.c" 1 {
+    "../other"
+} {
+    {"test.c" 1}
+}
+
+## /tmp/other/test.c
+do_test absolute-other 3 "/tmp/other/test.c" 1 {
+    "/tmp/other"
+} {
+    {"test.c" 1}
+}
diff --git a/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld238-dw4.exp b/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld238-dw4.exp
new file mode 100644
index 0000000..dea0308
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld238-dw4.exp
@@ -0,0 +1,70 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2022-2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Generate binaries imitating different ways source file paths can be passed to
+# compilers.  Test printing macros from those binaries.
+
+# The do_test proc comes from macro-source-path.exp.tcl.
+source $srcdir/$subdir/macro-source-path.exp.tcl
+
+# When adding a test here, please consider adding an equivalent case to
+# `gdb.base/macro-source-path.exp`.
+
+# The following tests are based on the output of `gcc -gdwarf-4 -g3 <file>`,
+# gcc 11 paired with gas from binutils 2.38.  With -gdwarf-4, gcc generates a
+# v4 (pre-standard) .debug_macro section.
+
+## test.c
+do_test filename 4 "test.c" 1 {
+} {
+    {"test.c" 0}
+}
+
+## ./test.c
+do_test dot-filename 4 "./test.c" 1 {
+    "."
+} {
+    {"test.c" 1}
+}
+
+## ../cwd/test.c
+do_test dot-dot-cwd 4 "../cwd/test.c" 1 {
+    "../cwd"
+} {
+    {"test.c" 1}
+}
+
+## /tmp/cwd/test.c
+do_test absolute-cwd 4 "/tmp/cwd/test.c" 1 {
+    "/tmp/cwd"
+} {
+    {"test.c" 1}
+}
+
+## ../other/test.c
+do_test dot-dot-other 4 "../other/test.c" 1 {
+    "../other"
+} {
+    {"test.c" 1}
+}
+
+## /tmp/other/test.c
+do_test absolute-other 4 "/tmp/other/test.c" 1 {
+    "/tmp/other"
+} {
+    {"test.c" 1}
+}
diff --git a/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld238-dw5.exp b/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld238-dw5.exp
new file mode 100644
index 0000000..98a278e
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/macro-source-path-gcc11-ld238-dw5.exp
@@ -0,0 +1,81 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2022-2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Generate binaries imitating different ways source file paths can be passed to
+# compilers.  Test printing macros from those binaries.
+
+# The do_test proc comes from macro-source-path.exp.tcl.
+source $srcdir/$subdir/macro-source-path.exp.tcl
+
+# When adding a test here, please consider adding an equivalent case to
+# `gdb.base/macro-source-path.exp`.
+
+# The following tests are based on the output of `gcc -gdwarf-5 -g3 <file>`,
+# gcc 11 paired with gas from binutils 2.38.
+
+## test.c
+do_test filename 5 "test.c" 1 {
+    "/tmp/cwd"
+} {
+    {"test.c" 0}
+    {"test.c" 0}
+}
+
+## ./test.c
+do_test dot-filename 5 "./test.c" 1 {
+    "/tmp/cwd"
+    "."
+} {
+    {"test.c" 1}
+    {"test.c" 1}
+}
+
+## ../cwd/test.c
+do_test dot-dot-cwd 5 "../cwd/test.c" 1 {
+    "/tmp/cwd"
+    "../cwd"
+} {
+    {"test.c" 1}
+    {"test.c" 1}
+}
+
+## /tmp/cwd/test.c
+do_test absolute-cwd 5 "/tmp/cwd/test.c" 1 {
+    "/tmp/cwd"
+    "/tmp/cwd"
+} {
+    {"test.c" 1}
+    {"test.c" 0}
+}
+
+## ../other/test.c
+do_test dot-dot-other 5 "../other/test.c" 1 {
+    "/tmp/cwd"
+    "../other"
+} {
+    {"test.c" 1}
+    {"test.c" 1}
+}
+
+## /tmp/other/test.c
+do_test absolute-other 5 "/tmp/other/test.c" 1 {
+    "/tmp/cwd"
+    "/tmp/other"
+} {
+    {"test.c" 1}
+    {"test.c" 1}
+}
diff --git a/gdb/testsuite/gdb.dwarf2/macro-source-path.exp b/gdb/testsuite/gdb.dwarf2/macro-source-path.exp.tcl
index 1318f8e..ecaf685 100644
--- a/gdb/testsuite/gdb.dwarf2/macro-source-path.exp
+++ b/gdb/testsuite/gdb.dwarf2/macro-source-path.exp.tcl
@@ -17,12 +17,15 @@
 
 # Generate binaries imitating different ways source file paths can be passed to
 # compilers.  Test printing macros from those binaries.
+#
+# The entry points for this test are in the various
+# gdb.dwarf2/macro-source-path-*.exp files.
 
 load_lib dwarf.exp
 
 require dwarf2_support
 
-standard_testfile .c
+standard_testfile macro-source-path.c
 
 lassign [function_range main $srcdir/$subdir/$srcfile] \
     main_start main_len
@@ -160,248 +163,3 @@ proc do_test { test_name lines_version DW_AT_name main_file_idx directories
 	}
     }
 }
-
-# When adding a test here, please consider adding an equivalent case to the test
-# of the same name in gdb.base.
-
-# The following tests are based on the output of `gcc -gdwarf-5 -g3 <file>`,
-# gcc 11 paired with gas from binutils 2.38.
-
-## test.c
-do_test gcc11-ld238-dw5-filename 5 "test.c" 1 {
-    "/tmp/cwd"
-} {
-    {"test.c" 0}
-    {"test.c" 0}
-}
-
-## ./test.c
-do_test gcc11-ld238-dw5-dot-filename 5 "./test.c" 1 {
-    "/tmp/cwd"
-    "."
-} {
-    {"test.c" 1}
-    {"test.c" 1}
-}
-
-## ../cwd/test.c
-do_test gcc11-ld238-dw5-dot-dot-cwd 5 "../cwd/test.c" 1 {
-    "/tmp/cwd"
-    "../cwd"
-} {
-    {"test.c" 1}
-    {"test.c" 1}
-}
-
-## /tmp/cwd/test.c
-do_test gcc11-ld238-dw5-absolute-cwd 5 "/tmp/cwd/test.c" 1 {
-    "/tmp/cwd"
-    "/tmp/cwd"
-} {
-    {"test.c" 1}
-    {"test.c" 0}
-}
-
-## ../other/test.c
-do_test gcc11-ld238-dw5-dot-dot-other 5 "../other/test.c" 1 {
-    "/tmp/cwd"
-    "../other"
-} {
-    {"test.c" 1}
-    {"test.c" 1}
-}
-
-## /tmp/other/test.c
-do_test gcc11-ld238-dw5-absolute-other 5 "/tmp/other/test.c" 1 {
-    "/tmp/cwd"
-    "/tmp/other"
-} {
-    {"test.c" 1}
-    {"test.c" 1}
-}
-
-# The following tests are based on the output of `gcc -gdwarf-4 -g3 <file>`,
-# gcc 11 paired with gas from binutils 2.38.  With -gdwarf-4, gcc generates a
-# v4 (pre-standard) .debug_macro section.
-
-## test.c
-do_test gcc11-ld238-dw4-filename 4 "test.c" 1 {
-} {
-    {"test.c" 0}
-}
-
-## ./test.c
-do_test gcc11-ld238-dw4-dot-filename 4 "./test.c" 1 {
-    "."
-} {
-    {"test.c" 1}
-}
-
-## ../cwd/test.c
-do_test gcc11-ld238-dw4-dot-dot-cwd 4 "../cwd/test.c" 1 {
-    "../cwd"
-} {
-    {"test.c" 1}
-}
-
-## /tmp/cwd/test.c
-do_test gcc11-ld238-dw4-absolute-cwd 4 "/tmp/cwd/test.c" 1 {
-    "/tmp/cwd"
-} {
-    {"test.c" 1}
-}
-
-## ../other/test.c
-do_test gcc11-ld238-dw4-dot-dot-other 4 "../other/test.c" 1 {
-    "../other"
-} {
-    {"test.c" 1}
-}
-
-## /tmp/other/test.c
-do_test gcc11-ld238-dw4-absolute-other 4 "/tmp/other/test.c" 1 {
-    "/tmp/other"
-} {
-    {"test.c" 1}
-}
-
-# The following tests are based on the output of `clang-14 -gdwarf-5
-# -fdebug-macro -g3 <file>` (using its built-in assembler)
-
-## test.c
-do_test clang14-dw5-filename 5 "test.c" 0 {
-    "/tmp/cwd"
-} {
-    {"test.c" 0}
-}
-
-## ./test.c
-do_test clang14-dw5-dot-filename 5 "test.c" 1 {
-    "/tmp/cwd"
-    "."
-} {
-    {"test.c" 0}
-    {"test.c" 1}
-}
-
-## ../cwd/test.c
-do_test clang14-dw5-dot-dot-cwd 5 "../cwd/test.c" 0 {
-    "/tmp/cwd"
-} {
-    {"../cwd/test.c" 0}
-}
-
-## /tmp/cwd/test.c
-do_test clang14-dw5-absolute-cwd  5 "/tmp/cwd/test.c" 1 {
-    "/tmp/cwd"
-} {
-    {"/tmp/cwd/test.c" 0}
-    {"test.c" 0}
-}
-
-## ../other/test.c
-do_test clang14-dw5-dot-dot-other 5 "../other/test.c" 0 {
-    "/tmp/cwd"
-} {
-    {"../other/test.c" 0}
-}
-
-## /tmp/other/test.c
-do_test clang14-dw5-absolute-other 5 "/tmp/other/test.c" 1 {
-    "/tmp/cwd"
-    "/tmp"
-} {
-    {"/tmp/other/test.c" 0}
-    {"other/test.c" 1}
-}
-
-# The following tests are based on the output of `clang-14 -gdwarf-4
-# -fdebug-macro -g3 <file>` (using its built-in assembler).  With -gdwarf-4,
-# clang produces a .debug_macinfo section, not a .debug_macro section.  But
-# this test still creates a .debug_macro section, that's good enough for what
-# we want to test.
-
-## test.c
-do_test clang14-dw4-filename 4 "test.c" 1 {
-} {
-    {"test.c" 0}
-}
-
-## ./test.c
-do_test clang14-dw4-dot-filename 4 "test.c" 1 {
-    "."
-} {
-    {"test.c" 1}
-}
-
-## ../cwd/test.c
-do_test clang14-dw4-dot-dot-cwd 4 "../cwd/test.c" 1 {
-    "../cwd"
-} {
-    {"test.c" 1}
-}
-
-## /tmp/cwd/test.c
-do_test clang14-dw4-absolute-cwd  4 "/tmp/cwd/test.c" 1 {
-} {
-    {"test.c" 0}
-}
-
-## ../other/test.c
-do_test clang14-dw4-dot-dot-other 4 "../other/test.c" 1 {
-    "../other"
-} {
-    {"test.c" 1}
-}
-
-## /tmp/other/test.c
-do_test clang14-dw4-absolute-other 4 "/tmp/other/test.c" 1 {
-    "/tmp"
-} {
-    {"other/test.c" 1}
-}
-
-# The following tests are based on the output of `gcc -gdwarf-5 -g3 <file>`,
-# gcc 11 paired with gas from binutils 2.34 (Ubuntu 20.04).  It generates a v5
-# .debug_macro section, but a v3 .debug_line section.
-
-## test.c
-do_test gcc11-ld234-dw5-filename 3 "test.c" 1 {
-} {
-    {"test.c" 0}
-}
-
-## ./test.c
-do_test gcc11-ld234-dw5-dot-filename 3 "./test.c" 1 {
-    "."
-} {
-    {"test.c" 1}
-}
-
-## ../cwd/test.c
-do_test gcc11-ld234-dw5-dot-dot-cwd 3 "../cwd/test.c" 1 {
-    "../cwd"
-} {
-    {"test.c" 1}
-}
-
-## /tmp/cwd/test.c
-do_test gcc11-ld234-dw5-absolute-cwd 3 "/tmp/cwd/test.c" 1 {
-    "/tmp/cwd"
-} {
-    {"test.c" 1}
-}
-
-## ../other/test.c
-do_test gcc11-ld234-dw5-dot-dot-other 3 "../other/test.c" 1 {
-    "../other"
-} {
-    {"test.c" 1}
-}
-
-## /tmp/other/test.c
-do_test gcc11-ld234-dw5-absolute-other 3 "/tmp/other/test.c" 1 {
-    "/tmp/other"
-} {
-    {"test.c" 1}
-}