On Mon, Jan 26, 2015 at 12:57 AM, Richard Biener <richard.guent...@gmail.com> wrote: > On Fri, Jan 23, 2015 at 9:26 PM, H.J. Lu <hjl.to...@gmail.com> wrote: >> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64754 >> >> is a LTO bug where stage 1 and stage 2 compilers generate >> different LTO IR. Is there a way to dump LTO IR to see the >> actual difference in LTO IR? > > No. I've had multiple incarnations of local patches to dump stuff > during LTO IR write and LTO IR read so I could match them but > never committed anything because all this stuff is in the hot path. > > I wonder if we can make a GCC plugin do it though, via re-using > existing lto/tree-streamer.c and some preprocessor defines that > switches between plugin and GCC mode... >
I like this idea. We can extend "objdump -d" to dump LTO IR. -- H.J.
