Test source: git
Comments: LLVM bug: memcpy-> load/store; needs 'byte' type
Source: <stdin>
-- 1. ModuleToFunctionPassAdaptor
ERROR: Unsupported instruction: store volatile i16 0, ptr %gep1, align 2
ERROR: Unsupported instruction: store volatile double 0.000000e+00, ptr %a, align 1
ERROR: Unsupported instruction: store volatile double 0.000000e+00, ptr %a, align 1
ERROR: Unsupported instruction: store atomic volatile i32 %1, ptr %B release, align 4
-- 1. PassManager<Function> : Skipping NOP
-- 2. SROAPass
----------------------------------------
define void @test1(ptr %a, ptr %b) {
entry:
%alloca = alloca i64 2, align 16
%gep_a = gep ptr %a, 2 x i32 0, 1 x i64 0
%gep_alloca = gep ptr %alloca, 2 x i32 0, 1 x i64 0
%gep_b = gep ptr %b, 2 x i32 0, 1 x i64 0
store i8 164, ptr %gep_alloca, align 16
memcpy ptr %gep_alloca align 16, ptr %gep_a align 16, i32 2
memcpy ptr %gep_b align 16, ptr %gep_alloca align 16, i32 2
ret void
}
Transformation seems to be correct! (syntactically equal)
-- 3. SROAPass
----------------------------------------
define void @test1(ptr %a, ptr %b) {
entry:
%alloca = alloca i64 2, align 16
%gep_a = gep ptr %a, 2 x i32 0, 1 x i64 0
%gep_alloca = gep ptr %alloca, 2 x i32 0, 1 x i64 0
%gep_b = gep ptr %b, 2 x i32 0, 1 x i64 0
store i8 164, ptr %gep_alloca, align 16
memcpy ptr %gep_alloca align 16, ptr %gep_a align 16, i32 2
memcpy ptr %gep_b align 16, ptr %gep_alloca align 16, i32 2
ret void
}
=>
define void @test1(ptr %a, ptr %b) {
entry:
%gep_a = gep ptr %a, 2 x i32 0, 1 x i64 0
%gep_b = gep ptr %b, 2 x i32 0, 1 x i64 0
%alloca.sroa.0.0.copyload = load i8, ptr %gep_a, align 16
%alloca.sroa.3.0.gep_a.sroa_idx = gep inbounds ptr %gep_a, 1 x i64 1
%alloca.sroa.3.0.copyload = load i8, ptr %alloca.sroa.3.0.gep_a.sroa_idx, align 1
store i8 %alloca.sroa.0.0.copyload, ptr %gep_b, align 16
%alloca.sroa.3.0.gep_b.sroa_idx = gep inbounds ptr %gep_b, 1 x i64 1
store i8 %alloca.sroa.3.0.copyload, ptr %alloca.sroa.3.0.gep_b.sroa_idx, align 1
ret void
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target
Example:
ptr %a = pointer(non-local, block_id=1, offset=10) / Address=#x010
ptr %b = pointer(non-local, block_id=1, offset=10) / Address=#x010
Source:
ptr %alloca = pointer(local, block_id=0, offset=0) / Address=#x100
ptr %gep_a = pointer(non-local, block_id=1, offset=10) / Address=#x010
ptr %gep_alloca = pointer(local, block_id=0, offset=0) / Address=#x100
ptr %gep_b = pointer(non-local, block_id=1, offset=10) / Address=#x010
SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 > size: 0 align: 1 alloc type: 0 alive: false address: 0
Block 1 > size: 12 align: 1 alloc type: 0 alive: true address: 6
Block 2 > size: 1 align: 1 alloc type: 0 alive: true address: 1
LOCAL BLOCKS:
Block 4 > size: 16 align: 16 alloc type: 1 alive: true address: 256
Target:
ptr %gep_a = pointer(non-local, block_id=1, offset=10) / Address=#x010
ptr %gep_b = pointer(non-local, block_id=1, offset=10) / Address=#x010
i8 %alloca.sroa.0.0.copyload = UB triggered!
Pass: SROAPass
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=sroa<preserve-cfg>' '-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_zTT63bHc_YQvR.bc"
------------------- SMT STATS -------------------
Num queries: 28
Num invalid: 0
Num skips: 0
Num trivial: 8 (22.2%)
Num timeout: 0 (0.0%)
Num errors: 0 (0.0%)
Num SAT: 18 (64.3%)
Num UNSAT: 10 (35.7%)
Alive2: Transform doesn't verify; aborting!
RUN: at line 2: /home/nlopes/alive2/build/opt-alive.sh < /bitbucket/nlopes/llvm/llvm/test/Transforms/SROA/alignment.ll -passes='sroa<preserve-cfg>' -S | /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/SROA/alignment.ll --check-prefixes=CHECK,CHECK-PRESERVE-CFG + /home/nlopes/alive2/build/opt-alive.sh '-passes=sroa<preserve-cfg>' -S + /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/SROA/alignment.ll --check-prefixes=CHECK,CHECK-PRESERVE-CFG FileCheck error: '<stdin>' is empty. FileCheck command line: /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/SROA/alignment.ll --check-prefixes=CHECK,CHECK-PRESERVE-CFG