Test Failure: Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll

Test source: git

Log:

Source: /bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll

----------------------------------------
define i64 @sdiv64(i64 %a, i64 %b) {
#0:
  %d = sdiv i64 %a, %b
  ret i64 %d
}
=>
define i64 @sdiv64(i64 %a, i64 %b) {
#0:
  %#4 = or i64 %a, %b
  %#5 = and i64 %#4, -4294967296
  %#6 = icmp eq i64 %#5, 0
  br i1 %#6, label %#2, label %#1

#1:
  %#7 = sdiv i64 %a, %b
  br label %#3

#2:
  %#8 = trunc i64 %b to i32
  %#9 = trunc i64 %a to i32
  %#10 = udiv i32 %#9, %#8
  %#11 = zext i32 %#10 to i64
  br label %#3

#3:
  %#12 = phi i64 [ %#11, %#2 ], [ %#7, %#1 ]
  ret i64 %#12
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target

Example:
i64 %a = poison
i64 %b = #x0000000000000001 (1)

Source:
i64 %d = poison

Target:
i64 %#4 = poison
i64 %#5 = poison
i1 %#6 = poison
UB triggered on br


Pass: 
Command line: '/home/nlopes/llvm/build/bin/opt' '-load=/home/nlopes/alive2/build/tv/tv.so' '-tv-exit-on-error' '-tv' '-S' '-mtriple=amdgcn-amd-amdhsa' '-codegenprepare' '/bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll' '-tv' '-tv-smt-to=20000' '-tv-report-dir=/home/nlopes/alive2/build/logs' '-tv-smt-stats'


------------------- SMT STATS -------------------
Num queries: 17
Num invalid: 0
Num skips:   0
Num trivial: 1 (5.6%)
Num timeout: 0 (0.0%)
Num errors:  0 (0.0%)
Num SAT:     15 (88.2%)
Num UNSAT:   2 (11.8%)
Alive2: Transform doesn't verify; aborting!

stderr:

RUN: at line 2: /home/nlopes/alive2/build/opt-alive.sh -S -mtriple=amdgcn-amd-amdhsa -codegenprepare /bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll | /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll
+ /home/nlopes/alive2/build/opt-alive.sh -S -mtriple=amdgcn-amd-amdhsa -codegenprepare /bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll
+ /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/CodeGenPrepare/AMDGPU/bypass-slow-div-debug-info.ll

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