re PR c/60101 (Long compile times when mixed complex floating point datatypes are used in lengthy expressions)
PR c/60101
* c-common.c (merge_tlist): If copy is true, call new_tlist,
if false, add ADD itself, rather than vice versa.
(verify_tree): For COND_EXPR, don't call merge_tlist with non-zero
copy. For SAVE_EXPR, only call merge_tlist once.
* c-c++-common/pr60101.c: New test.
From-SVN: r207711
