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authorYiran Wang <yiran@google.com>2015-06-23 15:33:17 -0700
committerYiran Wang <yiran@google.com>2015-06-29 10:56:28 -0700
commit1d9fec7937f45dde5e04cac966a2d9a12f2fc15a (patch)
tree3fbcd18a379a05fd6d43491a107e1f36bc61b185 /gcc-4.9/gcc/tree-cfgcleanup.c
parentf378ebf14df0952eae870c9865bab8326aa8f137 (diff)
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Synchronize with google/gcc-4_9 to r224707 (from r214835)
Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d
Diffstat (limited to 'gcc-4.9/gcc/tree-cfgcleanup.c')
-rw-r--r--gcc-4.9/gcc/tree-cfgcleanup.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc-4.9/gcc/tree-cfgcleanup.c b/gcc-4.9/gcc/tree-cfgcleanup.c
index 51b764f81..439f273cd 100644
--- a/gcc-4.9/gcc/tree-cfgcleanup.c
+++ b/gcc-4.9/gcc/tree-cfgcleanup.c
@@ -565,7 +565,20 @@ fixup_noreturn_call (gimple stmt)
/* First split basic block if stmt is not last. */
if (stmt != gsi_stmt (gsi_last_bb (bb)))
- split_block (bb, stmt);
+ {
+ if (stmt == gsi_stmt (gsi_last_nondebug_bb (bb)))
+ {
+ /* Don't split if there are only debug stmts
+ after stmt, that can result in -fcompare-debug
+ failures. Remove the debug stmts instead,
+ they should be all unreachable anyway. */
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
+ for (gsi_next (&gsi); !gsi_end_p (gsi); )
+ gsi_remove (&gsi, true);
+ }
+ else
+ split_block (bb, stmt);
+ }
changed |= remove_fallthru_edge (bb->succs);