Tim Northover | 00ed996 | 2014-03-29 10:18:08 +0000 | [diff] [blame] | 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* %p, i64 -1 |
| 8 | %ret = load 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* %p, i64 -1 |
| 16 | %ret = load 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* %p, i64 -1 |
| 24 | %ret = load 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* %p, i64 -1 |
| 32 | %ret = load 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* %a, i64 -12 |
| 41 | %tmp1 = bitcast i8* %p to i32* |
| 42 | %tmp2 = load 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* %a, i64 -12 |
| 52 | %tmp1 = bitcast i8* %p to i16* |
| 53 | %tmp2 = load 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* %a, i64 -12 |
| 63 | %tmp2 = load i8* %p, align 1 |
| 64 | %ret = zext i8 %tmp2 to i64 |
| 65 | |
| 66 | ret i64 %ret |
| 67 | } |