| ; RUN: llc -march=mips -mcpu=mips32r2 < %s -o /dev/null |
| |
| ; Test that SelectionDAG does not crash during DAGCombine when two pointers |
| ; to the stack match with differing bases and offsets when expanding memcpy. |
| ; This could result in one of the pointers being considered dereferenceable |
| ; and other not. |
| |
| define void @foo(i8*) { |
| start: |
| %a = alloca [22 x i8] |
| %b = alloca [22 x i8] |
| %c = bitcast [22 x i8]* %a to i8* |
| %d = getelementptr inbounds [22 x i8], [22 x i8]* %b, i32 0, i32 2 |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %c, i8* %d, i32 20, i1 false) |
| %e = getelementptr inbounds [22 x i8], [22 x i8]* %b, i32 0, i32 6 |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %e, i32 12, i1 false) |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1) |