1 ; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s 2 3 define i8 @f1(i8* %v) { 4 entry: 5 ; CHECK: f1: 6 ; CHECK: ldrb r0, [r0] 7 %tmp = load i8* %v 8 ret i8 %tmp 9 } 10 11 define i8 @f2(i8* %v) { 12 entry: 13 ; CHECK: f2: 14 ; CHECK: ldrb r0, [r0, #-1] 15 %tmp2 = getelementptr i8* %v, i8 1023 16 %tmp = load i8* %tmp2 17 ret i8 %tmp 18 } 19 20 define i8 @f3(i32 %base) { 21 entry: 22 ; CHECK: f3: 23 ; CHECK: mov.w r1, #4096 24 ; CHECK: ldrb r0, [r0, r1] 25 %tmp1 = add i32 %base, 4096 26 %tmp2 = inttoptr i32 %tmp1 to i8* 27 %tmp3 = load i8* %tmp2 28 ret i8 %tmp3 29 } 30 31 define i8 @f4(i32 %base) { 32 entry: 33 ; CHECK: f4: 34 ; CHECK: ldrb r0, [r0, #-128] 35 %tmp1 = sub i32 %base, 128 36 %tmp2 = inttoptr i32 %tmp1 to i8* 37 %tmp3 = load i8* %tmp2 38 ret i8 %tmp3 39 } 40 41 define i8 @f5(i32 %base, i32 %offset) { 42 entry: 43 ; CHECK: f5: 44 ; CHECK: ldrb r0, [r0, r1] 45 %tmp1 = add i32 %base, %offset 46 %tmp2 = inttoptr i32 %tmp1 to i8* 47 %tmp3 = load i8* %tmp2 48 ret i8 %tmp3 49 } 50 51 define i8 @f6(i32 %base, i32 %offset) { 52 entry: 53 ; CHECK: f6: 54 ; CHECK: ldrb.w r0, [r0, r1, lsl #2] 55 %tmp1 = shl i32 %offset, 2 56 %tmp2 = add i32 %base, %tmp1 57 %tmp3 = inttoptr i32 %tmp2 to i8* 58 %tmp4 = load i8* %tmp3 59 ret i8 %tmp4 60 } 61 62 define i8 @f7(i32 %base, i32 %offset) { 63 entry: 64 ; CHECK: f7: 65 ; CHECK: lsrs r1, r1, #2 66 ; CHECK: ldrb r0, [r0, r1] 67 %tmp1 = lshr i32 %offset, 2 68 %tmp2 = add i32 %base, %tmp1 69 %tmp3 = inttoptr i32 %tmp2 to i8* 70 %tmp4 = load i8* %tmp3 71 ret i8 %tmp4 72 } 73
