debuginfo: Solve several problems when compiling Rust with `-g`#21970

Merged

bors merged 3 commits intorust-lang:masterfrom

michaelwoerister:lang-item-call-debug-locs

Feb 8, 2015

Commits on Feb 6, 2015

debuginfo: Assign debuginfo source locations to lang-item calls.
michaelwoerister
committed
debuginfo: Implement direct debuginfo source location application for ICmp, FCmp, and CallWithConv.
michaelwoerister
committed
debuginfo: Fix problem with debug locations of constants in match patterns.
michaelwoerister
committed