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:
  %1 = bitcast ptr %dst to ptr
  %2 = bitcast ptr %src to ptr
  memmove ptr %1 align 8, ptr %2 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
  %2 = bitcast ptr %src to ptr
  memset ptr %2 align 8, i8 0, i64 16
  store {ptr, i8, i24, i32} %1, ptr %dst, align 8
  ret void
}
Transformation doesn't verify!
ERROR: SMT Error: smt tactic failed to show goal to be sat/unsat (incomplete lambdas)

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
  %2 = bitcast ptr %dst to ptr
  %3 = bitcast ptr %src to ptr
  memmove ptr %2 align 8, ptr %3 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:
  %1 = bitcast ptr %dst to ptr
  %dst2 = gep ptr %dst, 16 x i64 1
  %2 = bitcast ptr %dst2 to ptr
  %3 = bitcast ptr %src to ptr
  memmove ptr %2 align 8, ptr %3 align 8, i64 16
  memset ptr %1 align 8, i8 undef, i64 16
  ret void
}
Transformation doesn't verify!
ERROR: Mismatch in memory

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

Source:
{ptr, i8, i24, i32} %1 = { poison, poison, poison, poison }
ptr %dst2 = pointer(non-local, block_id=2, offset=16)

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 1	alloc type: 0
Block 1 >	size: 65	align: 256	alloc type: 0
Block 2 >	size: 129	align: 4294967296	alloc type: 0
Block 3 >	align: 2	alloc type: 0

Target:
ptr %1 = pointer(non-local, block_id=2, offset=0)
ptr %dst2 = pointer(non-local, block_id=2, offset=16)
ptr %2 = pointer(non-local, block_id=2, offset=16)
ptr %3 = pointer(non-local, block_id=1, offset=0)

Mismatch in pointer(non-local, block_id=2, offset=0)
Source value: null, byte offset=0
Target value: #x40


------------------- SMT STATS -------------------
Num queries: 20
Num invalid: 0
Num skips:   0
Num trivial: 23 (53.5%)
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'
+ /home/nuno/alive2/build/opt-alive.sh -memcpyopt -S -verify-memoryssa
+ /home/nuno/llvm/build/bin/FileCheck /home/nuno/llvm/llvm/test/Transforms/MemCpyOpt/fca2memcpy.ll

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

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