Test Failure: Transforms/LoopIdiom/unroll-custom-dl.ll

Test source: git

Comments: LLVM PR57679

Log:

Source: <stdin>
-- 1. ModuleToFunctionPassAdaptor
-- 1. PassManager<Function> : Skipping NOP
-- 2. FunctionToLoopPassAdaptor

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 3. PassManager<Function> : Skipping NOP
-- 4. LoopSimplifyPass

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 5. LoopSimplifyPass

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 6. LCSSAPass

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 7. LCSSAPass

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 8. PassManager<Function> : Skipping NOP
-- 9. PassManager<Loop, AnalysisManager<Loop, LoopStandardAnalysisResults&>, LoopStandardAnalysisResults&, LPMUpdater&> : Skipping NOP
-- 10. LoopIdiomRecognizePass

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 11. LoopIdiomRecognizePass

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 0, ptr %arrayidx, align 4
  %1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %1
  store i32 0, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
=>
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  %1 = add i32 %0, 4294967295
  %2 = lshr i32 %1, 1
  %3 = shl i32 %2, 3
  %4 = add i32 %3, 8
  memset ptr %f align 4, i8 0, i32 %4
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %5 = or i32 %indvars.iv, 1
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation doesn't verify! (not unsound)
ERROR: Timeout
-- 12. PassManager<Loop, AnalysisManager<Loop, LoopStandardAnalysisResults&>, LoopStandardAnalysisResults&, LPMUpdater&> : Skipping NOP
-- 13. FunctionToLoopPassAdaptor

----------------------------------------
define void @test(ptr %f, i32 %n) {
%entry:
  %0 = shl i32 %n, 1
  %cmp1 = icmp eq i32 %0, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  %1 = add i32 %0, 4294967295
  %2 = lshr i32 %1, 1
  %3 = shl i32 %2, 3
  %4 = add i32 %3, 8
  memset ptr %f align 4, i8 0, i32 %4
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  %5 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %5
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %0
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 14. PassManager<Function> : Skipping NOP
-- 15. PassManager<Function> : Skipping NOP
-- 16. FunctionToLoopPassAdaptor

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 17. PassManager<Function> : Skipping NOP
-- 18. LoopSimplifyPass

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 19. LoopSimplifyPass

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 20. LCSSAPass

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 21. LCSSAPass

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 22. PassManager<Function> : Skipping NOP
-- 23. PassManager<Loop, AnalysisManager<Loop, LoopStandardAnalysisResults&>, LoopStandardAnalysisResults&, LPMUpdater&> : Skipping NOP
-- 24. LoopIdiomRecognizePass

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 25. LoopIdiomRecognizePass

----------------------------------------
define void @test_pattern(ptr %f, i32 %n) {
%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %arrayidx = gep inbounds ptr %f, 4 x i32 %indvars.iv
  store i32 2, ptr %arrayidx, align 4
  %x1 = or i32 %indvars.iv, 1
  %arrayidx2 = gep inbounds ptr %f, 4 x i32 %x1
  store i32 2, ptr %arrayidx2, align 4
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
=>
@.memset_pattern = constant 16 bytes, align 16

define void @test_pattern(ptr %f, i32 %n) {
#init:
  br label %entry

%entry:
  %mul = shl i32 %n, 1
  %cmp1 = icmp eq i32 %mul, 0
  br i1 %cmp1, label %for.end, label %for.body.preheader

%for.body.preheader:
  %0 = add i32 %mul, 4294967295
  %1 = lshr i32 %0, 1
  %2 = shl i32 %1, 3
  %3 = add i32 %2, 8
  call void @memset_pattern16(ptr %f, ptr @.memset_pattern, i32 %3)
  br label %for.body

%for.body:
  %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
  %x1 = or i32 %indvars.iv, 1
  %indvars.iv.next = add nsw nuw i32 %indvars.iv, 2
  %cmp = icmp ult i32 %indvars.iv.next, %mul
  br i1 %cmp, label %for.body, label %for.end.loopexit

%for.end.loopexit:
  br label %for.end

%for.end:
  ret void
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target

Example:
ptr %f = pointer(non-local, block_id=1, offset=2012643664)
i32 %n = #x00000001 (1)

Source:
i32 %mul = #x00000002 (2)
i1 %cmp1 = #x0 (0)
  >> Jump to %for.body.preheader
  >> Jump to %for.body
i32 %indvars.iv = #x00000000 (0)
ptr %arrayidx = pointer(non-local, block_id=1, offset=2012643664)
i32 %x1 = #x00000001 (1)
ptr %arrayidx2 = pointer(non-local, block_id=1, offset=2012643668)
i32 %indvars.iv.next = #x00000002 (2)
i1 %cmp = #x0 (0)
  >> Jump to %for.end.loopexit
  >> Jump to %for.end

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 4	alloc type: 0
Block 1 >	size: 2147483648	align: 8589934592	alloc type: 0
Block 2 >	alloc type: 0
Block 3 >	size: 16	alloc type: 0

Target:
  >> Jump to %entry
i32 %mul = #x00000002 (2)
i1 %cmp1 = #x0 (0)
  >> Jump to %for.body.preheader
i32 %0 = #x00000001 (1)
i32 %1 = #x00000000 (0)
i32 %2 = #x00000000 (0)
i32 %3 = #x00000008 (8)
Function @memset_pattern16 triggered UB
UB triggered on br


Pass: LoopIdiomRecognizePass
Command line: '/home/nlopes/llvm/build/bin/opt' '-load=/home/nlopes/alive2/build/tv/tv.so' '-load-pass-plugin=/home/nlopes/alive2/build/tv/tv.so' '-tv-exit-on-error' '-passes=loop-idiom' '-S' '-tv-smt-to=20000' '-tv-report-dir=/home/nlopes/alive2/build/logs' '-tv-smt-stats'
Wrote bitcode to: "/home/nlopes/alive2/build/logs/in_eAYUW8Rp_CvYY.bc"


------------------- SMT STATS -------------------
Num queries: 9
Num invalid: 0
Num skips:   0
Num trivial: 20 (69.0%)
Num timeout: 1 (11.1%)
Num errors:  0 (0.0%)
Num SAT:     7 (77.8%)
Num UNSAT:   1 (11.1%)
Alive2: Transform doesn't verify; aborting!

stderr:

+ : 'RUN: at line 2'
+ /home/nlopes/alive2/build/opt-alive.sh -passes=loop-idiom -S
+ /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/LoopIdiom/unroll-custom-dl.ll

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/LoopIdiom/unroll-custom-dl.ll

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