Test source: git
Source: <stdin>
----------------------------------------
define i1 @opeq1(* nocapture nowrite dereferenceable(16) %a, * nocapture nowrite dereferenceable(16) %b) {
%entry:
%first.i = gep inbounds * nocapture nowrite dereferenceable(16) %a, 16 x i64 0, 1 x i64 12
%0 = load i32, * %first.i, align 4
%first1.i = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 8
%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(16) %a, 16 x i64 0, 1 x i64 0
%2 = load i32, * %second.i, align 4
%second2.i = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 0
%3 = load i32, * %second2.i, align 4
%cmp3.i = icmp eq i32 %2, %3
br i1 %cmp3.i, label %land.rhs.i.2, label %opeq1.exit
%land.rhs.i.2:
%third.i = gep inbounds * nocapture nowrite dereferenceable(16) %a, 16 x i64 0, 1 x i64 4
%4 = load i32, * %third.i, align 4
%third2.i = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 4
%5 = load i32, * %third2.i, align 4
%cmp4.i = icmp eq i32 %4, %5
br i1 %cmp4.i, label %land.rhs.i.3, label %opeq1.exit
%land.rhs.i.3:
%fourth.i = gep inbounds * nocapture nowrite dereferenceable(16) %a, 16 x i64 0, 1 x i64 12
%6 = load i32, * %fourth.i, align 4
%fourth2.i = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 12
%7 = load i32, * %fourth2.i, align 4
%cmp5.i = icmp eq i32 %6, %7
br label %opeq1.exit
%opeq1.exit:
%8 = phi i1 [ 0, %entry ], [ 0, %land.rhs.i ], [ 0, %land.rhs.i.2 ], [ %cmp5.i, %land.rhs.i.3 ]
ret i1 %8
}
=>
define i1 @opeq1(* nocapture nowrite dereferenceable(16) %a, * nocapture nowrite dereferenceable(16) %b) {
%land.rhs.i+land.rhs.i.2:
%0 = gep inbounds * nocapture nowrite dereferenceable(16) %a, 16 x i64 0, 1 x i64 0
%1 = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 0
%cstr = bitcast * %0 to *
%cstr3 = bitcast * %1 to *
%memcmp = memcmp * %cstr, * %cstr3, i64 8
%2 = icmp eq i32 %memcmp, 0
br i1 %2, label %entry2, label %opeq1.exit
%entry2:
%3 = gep inbounds * nocapture nowrite dereferenceable(16) %a, 16 x i64 0, 1 x i64 12
%4 = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 8
%5 = load i32, * %3, align 4
%6 = load i32, * %4, align 4
%7 = icmp eq i32 %5, %6
br i1 %7, label %land.rhs.i.31, label %opeq1.exit
%land.rhs.i.31:
%8 = gep inbounds * nocapture nowrite dereferenceable(16) %a, 16 x i64 0, 1 x i64 12
%9 = gep inbounds * nocapture nowrite dereferenceable(16) %b, 16 x i64 0, 1 x i64 12
%10 = load i32, * %8, align 4
%11 = load i32, * %9, align 4
%12 = icmp eq i32 %10, %11
br label %opeq1.exit
%opeq1.exit:
%13 = phi i1 [ %12, %land.rhs.i.31 ], [ 0, %entry2 ], [ 0, %land.rhs.i+land.rhs.i.2 ]
ret i1 %13
}
Transformation doesn't verify!
ERROR: Source is more defined than target
Example:
* nocapture nowrite dereferenceable(16) %a = pointer(non-local, block_id=1, offset=0, attrs=3)
* nocapture nowrite dereferenceable(16) %b = pointer(non-local, block_id=2, offset=0, attrs=3)
Source:
* %first.i = pointer(non-local, block_id=1, offset=12, attrs=3)
i32 %0 = #x04000080 (67108992)
* %first1.i = pointer(non-local, block_id=2, offset=8, attrs=3)
i32 %1 = #x00040200 (262656)
i1 %cmp.i = #x0 (0)
* %second.i = pointer(non-local, block_id=1, offset=0, attrs=3)
i32 %2 = poison
* %second2.i = pointer(non-local, block_id=2, offset=0, attrs=3)
i32 %3 = poison
i1 %cmp3.i = poison
* %third.i = pointer(non-local, block_id=1, offset=4, attrs=3)
i32 %4 = poison
* %third2.i = pointer(non-local, block_id=2, offset=4, attrs=3)
i32 %5 = poison
i1 %cmp4.i = poison
* %fourth.i = pointer(non-local, block_id=1, offset=12, attrs=3)
i32 %6 = #x04000080 (67108992)
* %fourth2.i = pointer(non-local, block_id=2, offset=12, attrs=3)
i32 %7 = poison
i1 %cmp5.i = poison
i1 %8 = #x0 (0)
SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 > size: 0 align: 1 alloc type: 0
Block 1 > size: 16 align: 4 alloc type: 0
Block 2 > size: 16 align: 32 alloc type: 0
Target:
* %0 = pointer(non-local, block_id=1, offset=0, attrs=3)
* %1 = pointer(non-local, block_id=2, offset=0, attrs=3)
* %cstr = pointer(non-local, block_id=1, offset=0, attrs=3)
* %cstr3 = pointer(non-local, block_id=2, offset=0, attrs=3)
i32 %memcmp = poison
i1 %2 = poison
* %3 = pointer(non-local, block_id=1, offset=12, attrs=3)
* %4 = pointer(non-local, block_id=2, offset=8, attrs=3)
i32 %5 = #x04000080 (67108992)
i32 %6 = #x00040200 (262656)
i1 %7 = #x0 (0)
* %8 = pointer(non-local, block_id=1, offset=12, attrs=3)
* %9 = pointer(non-local, block_id=2, offset=12, attrs=3)
i32 %10 = #x04000080 (67108992)
i32 %11 = poison
i1 %12 = poison
i1 %13 = #x0 (0)
------------------- SMT STATS -------------------
Num queries: 2
Num invalid: 0
Num skips: 0
Num trivial: 0 (0.0%)
Num timeout: 0 (0.0%)
Num errors: 0 (0.0%)
Num SAT: 2 (100.0%)
Num UNSAT: 0 (0.0%)
+ : 'RUN: at line 2' + /home/nlopes/alive2/build/opt-alive.sh -mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S + /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/MergeICmps/X86/entry-block-shuffled.ll Alive2: Transform doesn't verify; aborting! FileCheck error: '<stdin>' is empty. FileCheck command line: /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/MergeICmps/X86/entry-block-shuffled.ll