1; RUN: llc -O0 < %s -mtriple=avr | FileCheck %s 2 3; CHECK-LABEL: read_sp: 4; CHECK: in r24, 61 5; CHECK: in r25, 62 6define i16 @read_sp() { 7entry: 8 %sp = call i16 @llvm.read_register.i16(metadata !0) 9 ret i16 %sp 10} 11 12; CHECK-LABEL: read_r0: 13; CHECK: mov r24, r0 14define i8 @read_r0() { 15entry: 16 %r0 = call i8 @llvm.read_register.i8(metadata !1) 17 ret i8 %r0 18} 19 20; CHECK-LABEL: read_r1: 21; CHECK: mov r24, r1 22define i8 @read_r1() { 23entry: 24 %r1 = call i8 @llvm.read_register.i8(metadata !2) 25 ret i8 %r1 26} 27 28; CHECK-LABEL: read_r1r0: 29; CHECK: mov r24, r0 30; CHECK: mov r25, r1 31define i16 @read_r1r0() { 32entry: 33 %r1r0 = call i16 @llvm.read_register.i16(metadata !1) 34 ret i16 %r1r0 35} 36 37declare i16 @llvm.read_register.i16(metadata) 38declare i8 @llvm.read_register.i8(metadata) 39 40!0 = !{!"sp"} 41!1 = !{!"r0"} 42!2 = !{!"r1"} 43