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-rw-r--r--gcc/lower-subreg.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/lower-subreg.c b/gcc/lower-subreg.c
index 1cc972a..6876f09 100644
--- a/gcc/lower-subreg.c
+++ b/gcc/lower-subreg.c
@@ -33,6 +33,7 @@ along with GCC; see the file COPYING3. If not see
#include "basic-block.h"
#include "recog.h"
#include "bitmap.h"
+#include "dce.h"
#include "expr.h"
#include "except.h"
#include "regs.h"
@@ -1091,6 +1092,9 @@ decompose_multiword_subregs (void)
return;
}
+ if (df)
+ run_word_dce ();
+
/* FIXME: When the dataflow branch is merged, we can change this
code to look for each multi-word pseudo-register and to find each
insn which sets or uses that register. That should be faster