Mercurialcrosstool-ng / annotate
summary | shortlog | changelog | graph | tags | branches | files | changeset | file | latest | revisions | annotate | diff | raw | help
patches/gcc/4.4.4/190-flatten-switch-stmt-00.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
child 2148 ada9128c98b8
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
yann@1948 
     1
 
diff -durN gcc-4.4.0.orig/gcc/stmt.c gcc-4.4.0/gcc/stmt.c
yann@1948 
     2
 






yann@1948


     3


diff -durN gcc-4.4.4.orig/gcc/stmt.c gcc-4.4.4/gcc/stmt.c







yann@1948


     4


--- gcc-4.4.4.orig/gcc/stmt.c	2010-03-08 12:46:28.000000000 +0100







yann@1948


     5


+++ gcc-4.4.4/gcc/stmt.c	2010-05-16 19:12:31.000000000 +0200







yann@1948


     6


@@ -2377,7 +2377,11 @@







yann@1948


     7


 	  use_cost_table







yann@1948


     8


 	    = (TREE_CODE (orig_type) != ENUMERAL_TYPE







yann@1948


     9


 	       && estimate_case_costs (case_list));







yann@1948


    10


-	  balance_case_nodes (&case_list, NULL);







yann@1948


    11


+	  /* When optimizing for size, we want a straight list to avoid







yann@1948


    12


+	     jumps as much as possible. This basically creates an if-else







yann@1948


    13


+	     chain.  */







yann@1948


    14


+	  if (!optimize_size)







yann@1948


    15


+	    balance_case_nodes (&case_list, NULL);







yann@1948


    16


 	  emit_case_nodes (index, case_list, default_label, index_type);







yann@1948


    17


 	  if (default_label)







yann@1948


    18


 	    emit_jump (default_label);







yann@1948


    19


@@ -2943,6 +2947,7 @@







yann@1948


    20


 	    {







yann@1948


    21


 	      if (!node_has_low_bound (node, index_type))







yann@1948


    22


 		{







yann@1948


    23


+		  if (!optimize_size) /* don't jl to the .default_label. */







yann@1948


    24


 		  emit_cmp_and_jump_insns (index,







yann@1948


    25


 					   convert_modes







yann@1948


    26


 					   (mode, imode,












crosstool-ng