1 ; RUN: llc < %s -march=arm64 | FileCheck %s 2 3 define i64 @_f0(i64* %p) { 4 ; CHECK: f0: 5 ; CHECK: ldur x0, [x0, #-8] 6 ; CHECK-NEXT: ret 7 %tmp = getelementptr inbounds i64, i64* %p, i64 -1 8 %ret = load i64, i64* %tmp, align 2 9 ret i64 %ret 10 } 11 define i32 @_f1(i32* %p) { 12 ; CHECK: f1: 13 ; CHECK: ldur w0, [x0, #-4] 14 ; CHECK-NEXT: ret 15 %tmp = getelementptr inbounds i32, i32* %p, i64 -1 16 %ret = load i32, i32* %tmp, align 2 17 ret i32 %ret 18 } 19 define i16 @_f2(i16* %p) { 20 ; CHECK: f2: 21 ; CHECK: ldurh w0, [x0, #-2] 22 ; CHECK-NEXT: ret 23 %tmp = getelementptr inbounds i16, i16* %p, i64 -1 24 %ret = load i16, i16* %tmp, align 2 25 ret i16 %ret 26 } 27 define i8 @_f3(i8* %p) { 28 ; CHECK: f3: 29 ; CHECK: ldurb w0, [x0, #-1] 30 ; CHECK-NEXT: ret 31 %tmp = getelementptr inbounds i8, i8* %p, i64 -1 32 %ret = load i8, i8* %tmp, align 2 33 ret i8 %ret 34 } 35 36 define i64 @zext32(i8* %a) nounwind ssp { 37 ; CHECK-LABEL: zext32: 38 ; CHECK: ldur w0, [x0, #-12] 39 ; CHECK-NEXT: ret 40 %p = getelementptr inbounds i8, i8* %a, i64 -12 41 %tmp1 = bitcast i8* %p to i32* 42 %tmp2 = load i32, i32* %tmp1, align 4 43 %ret = zext i32 %tmp2 to i64 44 45 ret i64 %ret 46 } 47 define i64 @zext16(i8* %a) nounwind ssp { 48 ; CHECK-LABEL: zext16: 49 ; CHECK: ldurh w0, [x0, #-12] 50 ; CHECK-NEXT: ret 51 %p = getelementptr inbounds i8, i8* %a, i64 -12 52 %tmp1 = bitcast i8* %p to i16* 53 %tmp2 = load i16, i16* %tmp1, align 2 54 %ret = zext i16 %tmp2 to i64 55 56 ret i64 %ret 57 } 58 define i64 @zext8(i8* %a) nounwind ssp { 59 ; CHECK-LABEL: zext8: 60 ; CHECK: ldurb w0, [x0, #-12] 61 ; CHECK-NEXT: ret 62 %p = getelementptr inbounds i8, i8* %a, i64 -12 63 %tmp2 = load i8, i8* %p, align 1 64 %ret = zext i8 %tmp2 to i64 65 66 ret i64 %ret 67 } 68
