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-rw-r--r--gcc/shrink-wrap.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/shrink-wrap.c b/gcc/shrink-wrap.c
index 775db9c..d70635e 100644
--- a/gcc/shrink-wrap.c
+++ b/gcc/shrink-wrap.c
@@ -43,6 +43,7 @@ along with GCC; see the file COPYING3. If not see
#include "rtl-iter.h"
#include "valtrack.h"
#include "function-abi.h"
+#include "print-rtl.h"
/* Return true if INSN requires the stack frame to be set up.
PROLOGUE_USED contains the hard registers used in the function
@@ -735,7 +736,11 @@ try_shrink_wrapping (edge *entry_edge, rtx_insn *prologue_seq)
set_up_by_prologue.set))
{
if (dump_file)
- fprintf (dump_file, "Block %d needs the prologue.\n", bb->index);
+ {
+ fprintf (dump_file, "Block %d needs prologue due to insn %d:\n",
+ bb->index, INSN_UID (insn));
+ print_rtl_single (dump_file, insn);
+ }
pro = nearest_common_dominator (CDI_DOMINATORS, pro, bb);
break;
}