Test Failure: Transforms/SimplifyCFG/implied-cond-matching-false-dest.ll

Test source: git

Log:

Source: /home/nlopes/llvm/llvm/test/Transforms/SimplifyCFG/implied-cond-matching-false-dest.ll

----------------------------------------
define void @test_eq_eq(i32 %a, i32 %b) {
%0:
  %cmp1 = icmp eq i32 %a, %b
  br i1 %cmp1, label %untaken, label %taken

%taken:
  %cmp2 = icmp eq i32 %a, %b
  br i1 %cmp2, label %istrue, label %isfalse

%istrue:
  call void @is(i1 1)
  ret void

%isfalse:
  call void @is(i1 0)
  ret void

%untaken:
  ret void
}
=>
define void @test_eq_eq(i32 %a, i32 %b) {
%0:
  %cmp1 = icmp eq i32 %a, %b
  br i1 %cmp1, label %untaken, label %isfalse

%isfalse:
  call void @is(i1 0)
  ret void

%untaken:
  ret void
}
Transformation doesn't verify!
ERROR: Source is more defined than target

Example:
i32 %a = #x00000000 (0)
i32 %b = undef

Source:
i1 %cmp1 = any
i1 %cmp2 = any

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 1	alloc type: 0
Block 1 >	size: 0	align: 0	alloc type: 0

Target:
i1 %cmp1 = any



------------------- SMT STATS -------------------
Num queries: 5
Num invalid: 0
Num skips:   0
Num trivial: 0 (0.0%)
Num timeout: 0 (0.0%)
Num errors:  0 (0.0%)
Num SAT:     2 (40.0%)
Num UNSAT:   3 (60.0%)

stderr:

+ : 'RUN: at line 1'
+ /home/nlopes/alive2/scripts/opt-alive.sh /home/nlopes/llvm/llvm/test/Transforms/SimplifyCFG/implied-cond-matching-false-dest.ll -S -simplifycfg
+ /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/SimplifyCFG/implied-cond-matching-false-dest.ll

Alive2: Transform doesn't verify; aborting!
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/SimplifyCFG/implied-cond-matching-false-dest.ll

NOTE: This test would pass if undef didn't exist!

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