diff options
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/20090709-1.c | 20 | ||||
| -rw-r--r-- | gcc/varasm.c | 4 |
4 files changed, 31 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 114d4a18d4d..9813255fdb8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,6 @@ +2009-07-09 Maxim Kuvyrkov <maxim@codesourcery.com> + + * varasm.c (build_constant_desc): Don't share RTL in pool entries. 2009-07-09 Basile Starynkevitch <basile@starynkevitch.net> diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d9f3bfe4e40..674429c44f8 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2009-07-09 Maxim Kuvyrkov <maxim@codesourcery.com> + + * gcc.target/m68k/20090709-1.c: New. + 2009-07-09 Dodji Seketeli <dodji@redhat.com> PR c++/40684 diff --git a/gcc/testsuite/gcc.dg/20090709-1.c b/gcc/testsuite/gcc.dg/20090709-1.c new file mode 100644 index 00000000000..fda05b7566d --- /dev/null +++ b/gcc/testsuite/gcc.dg/20090709-1.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* There should be 3 occurrences of .LC0 in the code: + one for the definition of "0", + one for use in test1() and + one for use in test2(). + FIXME: At the moment m68k GCC does not optimize test1() to nop + for some reason. */ +/* { dg-final { scan-assembler-times ".LC0" 3 } } */ + +void dummy(char *arg); + +void test1(void) +{ + char tmp[2] = "0"; +} + +void test2(void) +{ + dummy("0"); +} diff --git a/gcc/varasm.c b/gcc/varasm.c index f8744f72846..6e81db4ba01 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -3208,6 +3208,10 @@ build_constant_desc (tree exp) set_mem_alias_set (rtl, 0); set_mem_alias_set (rtl, const_alias_set); + /* We cannot share RTX'es in pool entries. + Mark this piece of RTL as required for unsharing. */ + RTX_FLAG (rtl, used) = 1; + /* Set flags or add text to the name to record information, such as that it is a local symbol. If the name is changed, the macro ASM_OUTPUT_LABELREF will have to know how to strip this |