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12 Commits

Author SHA1 Message Date
Evan Cheng 5ebf2acd84 Optimize conditional branch on i1 phis with non-constant inputs. 
This turns:

eq:
        %3 = icmp eq i32 %1, %2
        br label %join

ne:
        %4 = icmp ne i32 %1, %2
        br label %join

join:
        %5 = phi i1 [%3, %eq], [%4, %ne]
        br i1 %5, label %yes, label %no

=>

eq:
        %3 = icmp eq i32 %1, %2
        br i1 %3, label %yes, label %no

ne:
        %4 = icmp ne i32 %1, %2
        br i1 %4, label %yes, label %no

llvm-svn: 69102
 2009-04-14 23:40:03 +00:00
Devang Patel 409b794cfe Ignore dbg intrinsics while propagating conditional expression info. Take 2. 
llvm-svn: 63898
 2009-02-05 23:32:52 +00:00
Devang Patel 02f58e1e8d Revert rev. 63876. It is causing llvm-gcc bootstrap failure. 
llvm-svn: 63888
 2009-02-05 21:46:41 +00:00
Devang Patel 58cb603d2a Remove dead blocks in the end. 
llvm-svn: 63880
 2009-02-05 19:59:42 +00:00
Devang Patel 5922e26d1a Ignore dbg intrinsics while propagating conditional expression info. 
llvm-svn: 63876
 2009-02-05 19:15:39 +00:00
Chris Lattner 9449991c4f Handle single-entry phi nodes gracefully in condprop. 
llvm-svn: 62985
 2009-01-26 02:18:20 +00:00
Tanya Lattner 5640bd186a Remove llvm-upgrade and update test cases. 
llvm-svn: 47793
 2008-03-01 09:15:35 +00:00
Chris Lattner d7cb625a9e Fix PR1575 and test/Transforms/CondProp/2007-08-01-InvalidRead.ll 
llvm-svn: 40720
 2007-08-02 04:47:05 +00:00
John Criswell 2660cef6d7 Convert .cvsignore files 
llvm-svn: 37801
 2007-06-29 16:35:07 +00:00
Reid Spencer 8d9056c56c For PR1319: 
Upgrade to use new Tcl exec based test harness

llvm-svn: 36055
 2007-04-15 06:53:51 +00:00
Reid Spencer d029c7e666 Make the llvm-runtest function much more amenable by eliminating all the 
global variables that needed to be passed in. This makes it possible to
add new global variables with only a couple changes (Makefile and llvm-dg.exp)
instead of touching every single dg.exp file.

llvm-svn: 35918
 2007-04-11 19:56:59 +00:00
Reid Spencer 83b3d82672 Regression is gone, don't try to find it on clean target. 
llvm-svn: 33296
 2007-01-17 07:59:14 +00:00