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Diffstat (limited to 'gcc/tree-ssa-threadedge.c')
| -rw-r--r-- | gcc/tree-ssa-threadedge.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-ssa-threadedge.c b/gcc/tree-ssa-threadedge.c index 38f80ba..68fd4ef 100644 --- a/gcc/tree-ssa-threadedge.c +++ b/gcc/tree-ssa-threadedge.c @@ -247,6 +247,13 @@ record_temporary_equivalences_from_stmts_at_dest (edge e, && gimple_asm_volatile_p (as_a <gasm *> (stmt))) return NULL; + /* If the statement is a unique builtin, we can not thread + through here. */ + if (gimple_code (stmt) == GIMPLE_CALL + && gimple_call_internal_p (stmt) + && gimple_call_internal_unique_p (stmt)) + return NULL; + /* If duplicating this block is going to cause too much code expansion, then do not thread through this block. */ stmt_count++; |