[gcc r12-4451] Darwin: Update specs handling '-r'.

[Iain D Sandoe <iains@gcc.gnu.org>]

https://gcc.gnu.org/g:4aef14b09557ce072f1269bd8a05fa2b1df0eda2

commit r12-4451-g4aef14b09557ce072f1269bd8a05fa2b1df0eda2
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Thu Oct 7 13:55:48 2021 +0100

    Darwin: Update specs handling '-r'.
    
    We were not wrapping all the default libraries in checks for whether
    they should be used.  We were also wasting a process launch calling
    dsymutil for 'r' link lines (a NOP in practice).  Order the checks
    that exclude linking from most likely to occur, downwards.
    
    Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
    
    gcc/ChangeLog:
    
            * config/darwin.h (LINK_COMMAND_SPEC_A): Update 'r' handling to
            skip gomp and itm when r or nodefaultlibs is given.
            (DSYMUTIL_SPEC): Do not call dsymutil for '-r' link lines.
            Update ordering of exclusions, remove duplicate 'v' addition
            (collect2 will add this from the main command line).

Diff:
---
 gcc/config/darwin.h | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h
index 4aedf467c17..27cb3e4bb30 100644
--- a/gcc/config/darwin.h
+++ b/gcc/config/darwin.h
@@ -349,7 +349,7 @@ extern GTY(()) int darwin_ms_struct;
    linkers, and for positional arguments like libraries.  */
 
 #define LINK_COMMAND_SPEC_A \
-   "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
+   "%{!c:%{!E:%{!S:%{!M:%{!MM:%{!fsyntax-only:%{!fdump=*: \
     %(linker)" \
     LINK_PLUGIN_SPEC \
     "%{flto*:%<fcompare-debug*} \
@@ -358,20 +358,23 @@ extern GTY(()) int darwin_ms_struct;
    "%X %{s} %{t} %{Z} %{u*} \
     %{e*} %{r} \
     %{o*}%{!o:-o a.out} \
-    %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
-    %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
-    %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
-      %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
-    %{fgnu-tm: \
-      %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
-    %{!nostdlib:%{!r:%{!nodefaultlibs:\
+    %{!r:%{!nostdlib:%{!nostartfiles:%S}}} \
+    %{L*} %(link_libgcc) %o \
+    %{!r:%{!nostdlib:%{!nodefaultlibs:\
+      %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
+      %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
+	%{static|static-libgcc|static-libstdc++|static-libgfortran: \
+	  libgomp.a%s; : -lgomp }} \
+      %{fgnu-tm: \
+	%{static|static-libgcc|static-libstdc++|static-libgfortran: \
+	  libitm.a%s; : -litm }} \
       %{%:sanitize(address): -lasan } \
       %{%:sanitize(undefined): -lubsan } \
       %(link_ssp) \
       %:version-compare(>< 10.6 10.7 mmacosx-version-min= -ld10-uwfef) \
       %(link_gcc_c_sequence) \
     }}}\
-    %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} %{F*} "\
+    %{!r:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} "\
     DARWIN_PIE_SPEC \
     DARWIN_NOPIE_SPEC \
     DARWIN_RDYNAMIC \
@@ -384,12 +387,12 @@ extern GTY(()) int darwin_ms_struct;
    enabled).  */
 
 #define DSYMUTIL_SPEC \
-   "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
-    %{v} \
-    %{g*:%{!gctf:%{!gbtf:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}}}\
-    %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\
-      .f95|.f03|.f77|.for|.F|.F90|.F95|.F03|.d: \
-    %{g*:%{!gctf:%{!gbtf:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}}}"
+  "%{!c:%{!E:%{!S:%{!r:%{!M:%{!MM:%{!fsyntax-only:%{!fdump=*:\
+     %{g*:%{!gctf:%{!gbtf:%{!gstabs*:%{%:debug-level-gt(0): -idsym \
+       %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\
+	 .f95|.f03|.f77|.for|.F|.F90|.F95|.F03|.d: -dsym }\
+      }}}}}\
+   }}}}}}}}"
 
 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC