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4 Commits

Author SHA1 Message Date
Nuno Lopes 482fb19fd5 fix PR13339 (remove the predecessor from the unwind BB when removing an invoke) 
llvm-svn: 160325
 2012-07-16 22:49:40 +00:00
Nuno Lopes d0bcfe4d9d fix the regression I introduced in r159385 (it's necessary to update PHI nodes in unwind BB 
llvm-svn: 159534
 2012-07-02 16:14:47 +00:00
Nuno Lopes b97a4e8bc2 make simplifyCFG erase invokes to readonly/readnone functions 
llvm-svn: 159385
 2012-06-28 22:32:27 +00:00
Nuno Lopes 07594cba7c improve optimization of invoke instructions: 
- simplifycfg:  invoke undef/null -> unreachable
 - instcombine:  invoke new  -> invoke expect(0, 0)  (an arbitrary NOOP intrinsic;  only done if the allocated memory is unused, of course)
 - verifier:  allow invoke of intrinsics  (to make the previous step work)

llvm-svn: 159146
 2012-06-25 17:11:47 +00:00