46 lines · plain
1; RUN: llc < %s -mtriple=thumbv7s-apple-ios6.0.0 -verify-machineinstrs2 3; Check to make sure the tail-call return at the end doesn't use a4; callee-saved register. Register hinting from t2LDRDri was getting this5; wrong. The intervening call will force allocation to try a high register6; first, so the hint will attempt to fire, but must be rejected due to7; not being in the allocation order for the tcGPR register class.8; The machine instruction verifier will make sure that all actually worked9; out the way it's supposed to.10 11%"myclass" = type { %struct.foo }12%struct.foo = type { i32, [40 x i8] }13 14define hidden void @func(ptr %Data) nounwind ssp {15 %1 = getelementptr inbounds i8, ptr %Data, i32 1216 tail call void @abc(ptr %1) nounwind17 tail call void @def(ptr %1) nounwind18 %2 = getelementptr inbounds i8, ptr %Data, i32 819 %3 = load ptr, ptr %2, align 420 tail call void @ghi(ptr %3) nounwind21 %4 = load ptr, ptr %Data, align 422 %5 = getelementptr inbounds i8, ptr %Data, i32 423 %6 = load ptr, ptr %5, align 424 %7 = icmp eq ptr %Data, null25 br i1 %7, label %10, label %826 27; <label>:12 ; preds = %028 %9 = tail call ptr @jkl(ptr %1) nounwind29 tail call void @mno(ptr %Data) nounwind30 br label %1031 32; <label>:14 ; preds = %8, %033 tail call void %4(ptr %6) nounwind34 ret void35}36 37declare void @mno(ptr)38 39declare void @def(ptr)40 41declare void @abc(ptr)42 43declare void @ghi(ptr)44 45declare ptr @jkl(ptr) nounwind46