1 ; RUN: llc -march=mips -mcpu=mips32r2 < %s -o /dev/null 2 3 ; Test that SelectionDAG does not crash during DAGCombine when two pointers 4 ; to the stack match with differing bases and offsets when expanding memcpy. 5 ; This could result in one of the pointers being considered dereferenceable 6 ; and other not. 7 8 define void @foo(i8*) { 9 start: 10 %a = alloca [22 x i8] 11 %b = alloca [22 x i8] 12 %c = bitcast [22 x i8]* %a to i8* 13 %d = getelementptr inbounds [22 x i8], [22 x i8]* %b, i32 0, i32 2 14 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %c, i8* %d, i32 20, i1 false) 15 %e = getelementptr inbounds [22 x i8], [22 x i8]* %b, i32 0, i32 6 16 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %e, i32 12, i1 false) 17 ret void 18 } 19 20 declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1) 21
