Test source: git
Comments: LLVM PR51845
Source: <stdin>
----------------------------------------
define i1 @opeq1(* nocapture nowrite dereferenceable(8) %a, * nocapture nowrite dereferenceable(8) %b) nofree {
%entry:
%first.i = gep inbounds * nocapture nowrite dereferenceable(8) %a, 8 x i64 0, 1 x i64 0
%0 = load i32, * %first.i, align 4
%first1.i = gep inbounds * nocapture nowrite dereferenceable(8) %b, 8 x i64 0, 1 x i64 0
%1 = load i32, * %first1.i, align 4
%cmp.i = icmp eq i32 %0, %1
br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
%land.rhs.i:
%second.i = gep inbounds * nocapture nowrite dereferenceable(8) %a, 8 x i64 0, 1 x i64 4
%2 = load i32, * %second.i, align 4
%second2.i = gep inbounds * nocapture nowrite dereferenceable(8) %b, 8 x i64 0, 1 x i64 4
%3 = load i32, * %second2.i, align 4
%cmp3.i = icmp eq i32 %2, %3
br label %opeq1.exit
%opeq1.exit:
%4 = phi i1 [ 0, %entry ], [ %cmp3.i, %land.rhs.i ]
ret i1 %4
}
=>
define i1 @opeq1(* nocapture nowrite dereferenceable(8) %a, * nocapture nowrite dereferenceable(8) %b) nofree {
%entry+land.rhs.i:
%0 = gep inbounds * nocapture nowrite dereferenceable(8) %a, 8 x i64 0, 1 x i64 0
%1 = gep inbounds * nocapture nowrite dereferenceable(8) %b, 8 x i64 0, 1 x i64 0
%cstr = bitcast * %0 to *
%cstr1 = bitcast * %1 to *
%memcmp = memcmp * %cstr, * %cstr1, i64 8
%2 = icmp eq i32 %memcmp, 0
br label %opeq1.exit
%opeq1.exit:
ret i1 %2
}
Transformation doesn't verify!
ERROR: Timeout
----------------------------------------
define i1 @opeq1_inverse(* nocapture nowrite dereferenceable(8) %a, * nocapture nowrite dereferenceable(8) %b) nofree {
%entry:
%first.i = gep inbounds * nocapture nowrite dereferenceable(8) %a, 8 x i64 0, 1 x i64 4
%0 = load i32, * %first.i, align 4
%first1.i = gep inbounds * nocapture nowrite dereferenceable(8) %b, 8 x i64 0, 1 x i64 4
%1 = load i32, * %first1.i, align 4
%cmp.i = icmp eq i32 %0, %1
br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
%land.rhs.i:
%second.i = gep inbounds * nocapture nowrite dereferenceable(8) %a, 8 x i64 0, 1 x i64 0
%2 = load i32, * %second.i, align 4
%second2.i = gep inbounds * nocapture nowrite dereferenceable(8) %b, 8 x i64 0, 1 x i64 0
%3 = load i32, * %second2.i, align 4
%cmp3.i = icmp eq i32 %2, %3
br label %opeq1.exit
%opeq1.exit:
%4 = phi i1 [ 0, %entry ], [ %cmp3.i, %land.rhs.i ]
ret i1 %4
}
=>
define i1 @opeq1_inverse(* nocapture nowrite dereferenceable(8) %a, * nocapture nowrite dereferenceable(8) %b) nofree {
%land.rhs.i+entry:
%0 = gep inbounds * nocapture nowrite dereferenceable(8) %a, 8 x i64 0, 1 x i64 0
%1 = gep inbounds * nocapture nowrite dereferenceable(8) %b, 8 x i64 0, 1 x i64 0
%cstr = bitcast * %0 to *
%cstr1 = bitcast * %1 to *
%memcmp = memcmp * %cstr, * %cstr1, i64 8
%2 = icmp eq i32 %memcmp, 0
br label %opeq1.exit
%opeq1.exit:
ret i1 %2
}
Transformation doesn't verify!
ERROR: Target is more poisonous than source
Example:
* nocapture nowrite dereferenceable(8) %a = pointer(non-local, block_id=1, offset=28, attrs=3)
* nocapture nowrite dereferenceable(8) %b = pointer(non-local, block_id=2, offset=0, attrs=3)
Source:
* %first.i = pointer(non-local, block_id=1, offset=32, attrs=3)
i32 %0 = #x00000202 (514)
* %first1.i = pointer(non-local, block_id=2, offset=4, attrs=3)
i32 %1 = #x01010101 (16843009)
i1 %cmp.i = #x0 (0)
* %second.i = pointer(non-local, block_id=1, offset=28, attrs=3)
i32 %2 = poison
* %second2.i = pointer(non-local, block_id=2, offset=0, attrs=3)
i32 %3 = poison
i1 %cmp3.i = poison
i1 %4 = #x0 (0)
SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 > size: 0 align: 1 alloc type: 0
Block 1 > size: 128 align: 32 alloc type: 0
Block 2 > size: 128 align: 8589934592 alloc type: 0
Target:
* %0 = pointer(non-local, block_id=1, offset=28, attrs=3)
* %1 = pointer(non-local, block_id=2, offset=0, attrs=3)
* %cstr = pointer(non-local, block_id=1, offset=28, attrs=3)
* %cstr1 = pointer(non-local, block_id=2, offset=0, attrs=3)
i32 %memcmp = poison
i1 %2 = poison
Source value: #x0 (0)
Target value: poison
------------------- SMT STATS -------------------
Num queries: 6
Num invalid: 0
Num skips: 0
Num trivial: 17 (73.9%)
Num timeout: 1 (16.7%)
Num errors: 0 (0.0%)
Num SAT: 3 (50.0%)
Num UNSAT: 2 (33.3%)
Alive2: Transform doesn't verify; aborting!
+ : 'RUN: at line 2' + /home/nlopes/alive2/build/opt-alive.sh '-passes=require<domtree>,mergeicmps,verify<domtree>' -mtriple=x86_64-unknown-unknown -S + /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/MergeICmps/X86/pair-int32-int32.ll --check-prefix=X86 FileCheck error: '<stdin>' is empty. FileCheck command line: /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/MergeICmps/X86/pair-int32-int32.ll --check-prefix=X86