bugfix: cope when a source reg is dead at a join point
authorSimon Marlow <marlowsd@gmail.com>
Wed, 18 Jul 2012 12:33:45 +0000 (13:33 +0100)
committerSimon Marlow <marlowsd@gmail.com>
Mon, 30 Jul 2012 10:42:14 +0000 (11:42 +0100)
commit6c2c07c5c98adac365cc3da912ceb209bee41a61
tree6045e1123894132d2b1029b3cbe70aa6e12a0d63
parent93c03f84c4bfebea5faeb60d75d708a578413e4a
bugfix: cope when a source reg is dead at a join point

We didn't trip over this one until I started generating code without
proc-point splitting, which has more join points and loops.
compiler/nativeGen/RegAlloc/Linear/JoinToTargets.hs