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Re: [patch] tree-ssa-ccp.c: Propagate ADDR_EXPRs further.


Hi Jeff,

> I'd like to see at least some measurement of compile-time impacts.

Here is a timing in seconds for five runs of cc1 -O2 for several cc1-i
files.  (Actually each is run 6 times with the timing from the first
run discarded to discount hot cache effects.)

               original patched   diff%
c-common.i       22.403  22.338 -0.290%
combine.i        18.668  18.676 +0.042%
fold-const.i     42.545  42.531 -0.032%
reload1.i        14.505  14.509 +0.027%
reload.i         13.394  13.379 -0.111%
insn-attrtab.i  200.815 200.856 +0.020%

Noise?

Kazu Hirata


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