1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -reserve-regs-for-regalloc=LR,FP,X28,X27,X26,X25,X24,X23,X22,X21,X20,X19,X18,X17,X16,X15,X14,X13,X12,X11,X10,X9,X8,X7,X6,X5,X4 | FileCheck %s 3; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -reserve-regs-for-regalloc=X30,X29,X28,X27,X26,X25,X24,X23,X22,X21,X20,X19,X18,X17,X16,X15,X14,X13,X12,X11,X10,X9,X8,X7,X6,X5,X4 | FileCheck %s 4 5; LR, FP, X30 and X29 should be correctly recognized and not used. 6 7define void @foo(i64 %v1, i64 %v2, ptr %ptr) { 8; CHECK-LABEL: foo: 9; CHECK: // %bb.0: 10; CHECK-NEXT: sub sp, sp, #16 11; CHECK-NEXT: .cfi_def_cfa_offset 16 12; CHECK-NEXT: add x3, x0, x1 13; CHECK-NEXT: str x3, [sp, #8] // 8-byte Folded Spill 14; CHECK-NEXT: str x3, [x2, #8] 15; CHECK-NEXT: ldr x3, [x2, #16] 16; CHECK-NEXT: add x3, x0, x3 17; CHECK-NEXT: sub x3, x3, x1 18; CHECK-NEXT: str x3, [x2, #16] 19; CHECK-NEXT: ldr x3, [sp, #8] // 8-byte Folded Reload 20; CHECK-NEXT: str x3, [x2, #24] 21; CHECK-NEXT: str x0, [x2, #32] 22; CHECK-NEXT: str x1, [x2, #40] 23; CHECK-NEXT: add sp, sp, #16 24; CHECK-NEXT: ret 25 %v3 = add i64 %v1, %v2 26 %p1 = getelementptr i64, ptr %ptr, i64 1 27 store volatile i64 %v3, ptr %p1, align 8 28 29 %p2 = getelementptr i64, ptr %ptr, i64 2 30 %v4 = load volatile i64, ptr %p2, align 8 31 %v5 = add i64 %v1, %v4 32 %v6 = sub i64 %v5, %v2 33 store volatile i64 %v6, ptr %p2, align 8 34 35 %p3 = getelementptr i64, ptr %ptr, i64 3 36 store volatile i64 %v3, ptr %p3, align 8 37 38 %p4 = getelementptr i64, ptr %ptr, i64 4 39 store volatile i64 %v1, ptr %p4, align 8 40 %p5 = getelementptr i64, ptr %ptr, i64 5 41 store volatile i64 %v2, ptr %p5, align 8 42 ret void 43} 44