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authorKaz Kojima <kkojima@gcc.gnu.org>2007-03-10 05:04:10 +0000
committerKaz Kojima <kkojima@gcc.gnu.org>2007-03-10 05:04:10 +0000
commit07288ab03780bf84d7c0771b6bd76a78160d75d5 (patch)
treecdc343994eacf3399fee991dcb55b715d9654571 /gcc/mode-switching.c
parent9eeea7612d055f00ce21fd1442411c838d82b452 (diff)
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mode-switching.c (create_pre_exit): Skip blockage insn.
* mode-switching.c (create_pre_exit): Skip blockage insn. From-SVN: r122791
Diffstat (limited to 'gcc/mode-switching.c')
-rw-r--r--gcc/mode-switching.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/mode-switching.c b/gcc/mode-switching.c
index 407ae76..8e9bde3 100644
--- a/gcc/mode-switching.c
+++ b/gcc/mode-switching.c
@@ -259,6 +259,12 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes)
last_insn = return_copy;
continue;
}
+ if (GET_CODE (PATTERN (return_copy)) == ASM_INPUT
+ && strcmp (XSTR (PATTERN (return_copy), 0), "") == 0)
+ {
+ last_insn = return_copy;
+ continue;
+ }
/* If the return register is not (in its entirety)
likely spilled, the return copy might be
partially or completely optimized away. */