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authorhubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>2011-01-12 15:47:29 +0000
committerhubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>2011-01-12 15:47:29 +0000
commit0f8cfb362f58b7d0d0a0f742459e6c33c4e38f57 (patch)
tree854151fb4c00fe11201e919c9c91ad15f623500e /gcc/gcc.c
parent5211f29ae27dcf38942a16b8052f0510431aab8b (diff)
downloadgcc-0f8cfb362f58b7d0d0a0f742459e6c33c4e38f57.tar.gz
PR driver/47244
* gcc.c (PLUGIN_COND): Update to disable plugin unless -flto is used. (PLUGIN_COND_CLOSE): New macro. (LINK_COMMAND_SPEC): Update to use PLUGIN_COND_CLOSE. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168717 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/gcc.c')
-rw-r--r--gcc/gcc.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 9532d7efd8b..ea3403b5ca9 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -621,11 +621,18 @@ proper position among the other output files. */
# endif
#endif
-/* Conditional to test whether plugin is used or not. */
+/* Conditional to test whether plugin is used or not.
+ FIXME: For slim LTO we will need to enable plugin unconditionally. This
+ still cause problems with PLUGIN_LD != LD and when plugin is built but
+ not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
+ plugin only when LTO is enabled. We still honor explicit
+ -fuse-linker-plugin. */
#ifdef HAVE_LTO_PLUGIN
-#define PLUGIN_COND "!fno-use-linker-plugin"
+#define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
+#define PLUGIN_COND_CLOSE "}"
#else
#define PLUGIN_COND "fuse-linker-plugin"
+#define PLUGIN_COND_CLOSE ""
#endif
@@ -646,9 +653,9 @@ proper position among the other output files. */
-plugin-opt=%(lto_wrapper) \
-plugin-opt=-fresolution=%u.res \
%{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
- } \
- %{flto*:%<fcompare-debug*} \
- %{flto*} %l " LINK_PIE_SPEC \
+ }"PLUGIN_COND_CLOSE" \
+ %{flto|flto=*:%<fcompare-debug*} \
+ %{flto} %{flto=*} %l " LINK_PIE_SPEC \
"%X %{o*} %{e*} %{N} %{n} %{r}\
%{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
%{static:} %{L*} %(mfwrap) %(link_libgcc) %o\