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Evan Cheng dba98a0669 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

2006-08-14-SingleEntryPhiCrash.ll

Remove llvm-upgrade and update test cases.

2008-03-01 09:15:35 +00:00

2006-11-01-PhiNodeCrash.ll

Remove llvm-upgrade and update test cases.

2008-03-01 09:15:35 +00:00

2007-08-01-InvalidRead.ll

Fix PR1575 and test/Transforms/CondProp/2007-08-01-InvalidRead.ll

2007-08-02 04:47:05 +00:00

2009-01-25-SingleEntryPHI.ll

Handle single-entry phi nodes gracefully in condprop.