Test Failure: Transforms/DeadStoreElimination/batchaa-caching-new-pointers.ll

Test source: git

Log:

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

----------------------------------------
define ptr @foo(ptr noundef %ptr) {
#0:
  %struct.alloca = alloca i64 16, align 8, dead
  start_lifetime ptr %struct.alloca
  %struct.byte.8 = gep inbounds ptr %struct.alloca, 1 x i64 8
  memset ptr %struct.byte.8 align 4, i8 42, i64 8
  store i32 43, ptr %struct.byte.8, align 4
  %struct.byte.4 = gep inbounds ptr %struct.alloca, 1 x i64 4
  store i32 44, ptr %struct.byte.4, align 4
  %ret = load ptr, ptr %struct.byte.8, align 8
  end_lifetime ptr %struct.alloca
  ret ptr %ret
}
Transformation seems to be correct! (syntactically equal)

-- 3. DSEPass

----------------------------------------
define ptr @foo(ptr noundef %ptr) {
#0:
  %struct.alloca = alloca i64 16, align 8, dead
  start_lifetime ptr %struct.alloca
  %struct.byte.8 = gep inbounds ptr %struct.alloca, 1 x i64 8
  memset ptr %struct.byte.8 align 8, i8 42, i64 8
  store i32 43, ptr %struct.byte.8, align 8
  %struct.byte.4 = gep inbounds ptr %struct.alloca, 1 x i64 4
  store i32 44, ptr %struct.byte.4, align 4
  %ret = load ptr, ptr %struct.byte.8, align 8
  end_lifetime ptr %struct.alloca
  ret ptr %ret
}
=>
define ptr @foo(ptr noundef %ptr) {
#0:
  %struct.alloca = alloca i64 16, align 8, dead
  start_lifetime ptr %struct.alloca
  %struct.byte.8 = gep inbounds ptr %struct.alloca, 1 x i64 8
  %#1 = gep inbounds ptr %struct.byte.8, 1 x i64 4
  memset ptr %#1 align 4, i8 42, i64 4
  store i32 43, ptr %struct.byte.8, align 8
  %ret = load ptr, ptr %struct.byte.8, align 8
  end_lifetime ptr %struct.alloca
  ret ptr %ret
}
Transformation seems to be correct!

-- 4. PassManager<Function> : Skipping NOP
-- 5. PassManager<Function> : Skipping NOP
-- 6. DSEPass

----------------------------------------
declare ptr @malloc(i64) noalias willreturn alloc-family(malloc) allockind(alloc, uninitialized)
declare void @readnone(ptr) nofree memory(none)

define ptr @foo_with_removable_malloc() {
#0:
  %struct.alloca = alloca i64 16, align 8, dead
  start_lifetime ptr %struct.alloca
  %struct.byte.4 = gep inbounds ptr %struct.alloca, 1 x i64 4
  %struct.byte.8 = gep inbounds ptr %struct.alloca, 1 x i64 8
  %m2 = call ptr @malloc(noundef i64 4) nofree noundef nothrow noalias willreturn dereferenceable_or_null(4) alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0) memory(inaccessiblemem: readwrite)
  %m1 = call ptr @malloc(noundef i64 4) nofree noundef nothrow noalias willreturn dereferenceable_or_null(4) alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0) memory(inaccessiblemem: readwrite)
  store i32 0, ptr %struct.byte.8, align 4
  store i32 0, ptr %struct.byte.8, align 4
  store i32 123, ptr %m1, align 4
  store i32 123, ptr %m2, align 4
  memset ptr %struct.byte.8 align 4, i8 42, i64 8
  store i32 43, ptr %struct.byte.8, align 4
  store i32 44, ptr %struct.byte.4, align 4
  %ret = load ptr, ptr %struct.byte.8, align 8
  call void @readnone(ptr %struct.byte.4) nofree memory(none)
  call void @readnone(ptr %struct.byte.8) nofree memory(none)
  end_lifetime ptr %struct.alloca
  ret ptr %ret
}
Transformation seems to be correct! (syntactically equal)

-- 7. DSEPass

----------------------------------------
declare ptr @malloc(i64) noalias willreturn alloc-family(malloc) allockind(alloc, uninitialized)
declare void @readnone(ptr) nofree memory(none)

define ptr @foo_with_removable_malloc() {
#0:
  %struct.alloca = alloca i64 16, align 8, dead
  start_lifetime ptr %struct.alloca
  %struct.byte.4 = gep inbounds ptr %struct.alloca, 1 x i64 4
  %struct.byte.8 = gep inbounds ptr %struct.alloca, 1 x i64 8
  %m2 = call ptr @malloc(noundef i64 4) nofree noundef nothrow noalias willreturn dereferenceable_or_null(4) alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0) memory(inaccessiblemem: readwrite)
  %m1 = call ptr @malloc(noundef i64 4) nofree noundef nothrow noalias willreturn dereferenceable_or_null(4) alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0) memory(inaccessiblemem: readwrite)
  store i32 0, ptr %struct.byte.8, align 8
  store i32 0, ptr %struct.byte.8, align 8
  store i32 123, ptr %m1, align 8
  store i32 123, ptr %m2, align 8
  memset ptr %struct.byte.8 align 8, i8 42, i64 8
  store i32 43, ptr %struct.byte.8, align 8
  store i32 44, ptr %struct.byte.4, align 4
  %ret = load ptr, ptr %struct.byte.8, align 8
  call void @readnone(ptr %struct.byte.4) nofree memory(none)
  call void @readnone(ptr %struct.byte.8) nofree memory(none)
  end_lifetime ptr %struct.alloca
  ret ptr %ret
}
=>
declare void @readnone(ptr) nofree memory(none)

define ptr @foo_with_removable_malloc() {
#0:
  %struct.alloca = alloca i64 16, align 8, dead
  start_lifetime ptr %struct.alloca
  %struct.byte.4 = gep inbounds ptr %struct.alloca, 1 x i64 4
  %struct.byte.8 = gep inbounds ptr %struct.alloca, 1 x i64 8
  %#1 = gep inbounds ptr %struct.byte.8, 1 x i64 4
  memset ptr %#1 align 4, i8 42, i64 4
  store i32 43, ptr %struct.byte.8, align 8
  %ret = load ptr, ptr %struct.byte.8, align 8
  call void @readnone(ptr %struct.byte.4) nofree memory(none)
  call void @readnone(ptr %struct.byte.8) nofree memory(none)
  end_lifetime ptr %struct.alloca
  ret ptr %ret
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target

Example:

Source:
ptr %struct.alloca = null
ptr %struct.byte.4 = pointer(local, block_id=0, offset=4)
ptr %struct.byte.8 = pointer(local, block_id=0, offset=8)
ptr %m2 = pointer(local, block_id=1, offset=0)
ptr %m1 = pointer(local, block_id=2, offset=0)
ptr %ret = poison
void = function did not return!

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 4	alloc type: 0	alive: false	address: 0

LOCAL BLOCKS:
Block 4 >	size: 16	align: 8	alloc type: 1	alive: false
Block 5 >	size: 8	align: 8	alloc type: 2	alive: true
Block 6 >	size: 8	align: 8	alloc type: 2	alive: true

Target:
ptr %struct.alloca = null
ptr %struct.byte.4 = pointer(local, block_id=0, offset=4)
ptr %struct.byte.8 = pointer(local, block_id=0, offset=8)
ptr %#1 = pointer(local, block_id=0, offset=12)
ptr %ret = poison
void = function did not return!

TARGET MEMORY STATE
===================
LOCAL BLOCKS:
Block 4 >	size: 16	align: 8	alloc type: 1	alive: false	address: 256


Pass: DSEPass
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' '-S' '-passes=dse' '-tv-smt-to=20000' '-tv-report-dir=/home/nlopes/alive2/build/logs' '-tv-smt-stats'
Wrote bitcode to: "/home/nlopes/alive2/build/logs/in_ZwVXGydN_CmgY.bc"


------------------- SMT STATS -------------------
Num queries: 17
Num invalid: 0
Num skips:   0
Num trivial: 15 (46.9%)
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 -passes=dse < /bitbucket/nlopes/llvm/llvm/test/Transforms/DeadStoreElimination/batchaa-caching-new-pointers.ll | /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/DeadStoreElimination/batchaa-caching-new-pointers.ll
+ /home/nlopes/alive2/build/opt-alive.sh -S -passes=dse
+ /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/DeadStoreElimination/batchaa-caching-new-pointers.ll

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/DeadStoreElimination/batchaa-caching-new-pointers.ll

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