Test Failure: Transforms/MemCpyOpt/fca2memcpy.ll

Test source: git

Comments: Alive#345

Log:

Source: <stdin>
ERROR: Unsupported attribute: noalias
ERROR: Unsupported attribute: noalias
ERROR: Unsupported attribute: noalias
ERROR: Unsupported attribute: noalias
ERROR: Unsupported attribute: noalias

----------------------------------------
define void @copy(ptr %src, ptr %dst) {
%0:
  %1 = load {ptr, i8, i24, i32}, ptr %src, align 8
  store {ptr, i8, i24, i32} %1, ptr %dst, align 8
  ret void
}
=>
define void @copy(ptr %src, ptr %dst) {
%0:
  memmove ptr %dst align 8, ptr %src align 8, i64 16
  ret void
}
Transformation seems to be correct!

ERROR: Unsupported attribute: noalias
ERROR: Unsupported attribute: noalias

----------------------------------------
define void @destroysrc(ptr %src, ptr %dst) {
%0:
  %1 = load {ptr, i8, i24, i32}, ptr %src, align 8
  store {ptr, i8, i24, i32} { null, 0, [padding], 0 }, ptr %src, align 8
  store {ptr, i8, i24, i32} %1, ptr %dst, align 8
  ret void
}
=>
define void @destroysrc(ptr %src, ptr %dst) {
%0:
  %1 = load {ptr, i8, i24, i32}, ptr %src, align 8
  memset ptr %src align 8, i8 0, i64 16
  store {ptr, i8, i24, i32} %1, ptr %dst, align 8
  ret void
}
Transformation doesn't verify! (not unsound)
ERROR: SMT Error: smt tactic failed to show goal to be sat/unsat (incomplete quantifiers)
ERROR: Unsupported attribute: noalias

----------------------------------------
define void @copyalias(ptr %src, ptr %dst) {
%0:
  %1 = load {ptr, i8, i24, i32}, ptr %src, align 8
  %2 = load {ptr, i8, i24, i32}, ptr %src, align 8
  store {ptr, i8, i24, i32} %1, ptr %dst, align 8
  store {ptr, i8, i24, i32} %2, ptr %dst, align 8
  ret void
}
=>
define void @copyalias(ptr %src, ptr %dst) {
%0:
  %1 = load {ptr, i8, i24, i32}, ptr %src, align 8
  memmove ptr %dst align 8, ptr %src align 8, i64 16
  store {ptr, i8, i24, i32} %1, ptr %dst, align 8
  ret void
}
Transformation seems to be correct!


----------------------------------------
define void @addrproducer(ptr %src, ptr %dst) {
%0:
  %1 = load {ptr, i8, i24, i32}, ptr %src, align 8
  store {ptr, i8, i24, i32} undef, ptr %dst, align 8
  %dst2 = gep ptr %dst, 16 x i64 1
  store {ptr, i8, i24, i32} %1, ptr %dst2, align 8
  ret void
}
=>
define void @addrproducer(ptr %src, ptr %dst) {
%0:
  %dst2 = gep ptr %dst, 16 x i64 1
  memmove ptr %dst2 align 8, ptr %src align 8, i64 16
  memset ptr %dst align 8, i8 undef, i64 16
  ret void
}
Transformation doesn't verify! (unsound)
ERROR: Mismatch in memory

Example:
ptr %src = pointer(non-local, block_id=1, offset=0)
ptr %dst = pointer(non-local, block_id=2, offset=64)

Source:
{ptr, i8, i24, i32} %1 = { poison, poison, poison, poison }
ptr %dst2 = pointer(non-local, block_id=2, offset=80)

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 1	alloc type: 0
Block 1 >	size: 66	align: 131072	alloc type: 0
Block 2 >	size: 196	align: 65536	alloc type: 0
Block 3 >	align: 4	alloc type: 0

Target:
ptr %dst2 = pointer(non-local, block_id=2, offset=80)

Mismatch in pointer(non-local, block_id=2, offset=64)
Source value: null, byte offset=0
Target value: #x20

Pass: ModuleToFunctionPassAdaptor
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' '-tv' '-memcpyopt' '-S' '-verify-memoryssa' '-tv' '-tv-smt-to=20000' '-tv-report-dir=/home/nlopes/alive2/build/logs' '-tv-smt-stats'


------------------- SMT STATS -------------------
Num queries: 20
Num invalid: 0
Num skips:   0
Num trivial: 20 (50.0%)
Num timeout: 0 (0.0%)
Num errors:  1 (5.0%)
Num SAT:     13 (65.0%)
Num UNSAT:   6 (30.0%)
Alive2: Transform doesn't verify; aborting!

stderr:

+ : 'RUN: at line 2'
+ /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/MemCpyOpt/fca2memcpy.ll
+ /home/nlopes/alive2/build/opt-alive.sh -memcpyopt -S -verify-memoryssa

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/MemCpyOpt/fca2memcpy.ll

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