1 ; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -O0 2 3 ; When WZR wasn't marked as reserved, this function tried to allocate 4 ; it at O0 and then generated an internal fault (mostly incidentally) 5 ; when it discovered that it was already in use for a multiplication. 6 7 ; I'm not really convinced this is a good test since it could easily 8 ; stop testing what it does now with no-one any the wiser. However, I 9 ; can't think of a better way to force the allocator to use WZR 10 ; specifically. 11 12 define void @test() nounwind { 13 entry: 14 br label %for.cond 15 16 for.cond: ; preds = %for.body, %entry 17 br i1 undef, label %for.body, label %for.end 18 19 for.body: ; preds = %for.cond 20 br label %for.cond 21 22 for.end: ; preds = %for.cond 23 br label %for.cond6 24 25 for.cond6: ; preds = %for.body9, %for.end 26 br i1 undef, label %for.body9, label %while.cond30 27 28 for.body9: ; preds = %for.cond6 29 store i16 0, i16* undef, align 2 30 %0 = load i32* undef, align 4 31 %1 = load i32* undef, align 4 32 %mul15 = mul i32 %0, %1 33 %add16 = add i32 %mul15, 32768 34 %div = udiv i32 %add16, 65535 35 %add17 = add i32 %div, 1 36 store i32 %add17, i32* undef, align 4 37 br label %for.cond6 38 39 while.cond30: ; preds = %for.cond6 40 ret void 41 } 42
