| Tim Northover | 4a01ffb | 2017-05-02 22:45:19 +0000 | [diff] [blame] | 1 | ; RUN: llc -mtriple=arm %s -o - | FileCheck %s |
| 2 | ; RUN: llc -mtriple=thumbv7 %s -o - | FileCheck %s |
| 3 | |
| 4 | ; We ended up feeding a deleted node back to TableGen when we converted "Off * |
| 5 | ; 410" into "(Off * 205) << 1", where the multiplication already existed in the |
| 6 | ; DAG. |
| 7 | |
| 8 | ; CHECK-LABEL: addrmode_cse_mutation: |
| 9 | ; CHECK: {{mul|muls}} [[OFFSET:r[0-9]+]], {{r[0-9]+}}, {{r[0-9]+}} |
| 10 | ; CHECK: {{ldrb|ldrb.w}} {{r[0-9]+}}, [r0, [[OFFSET]], lsl #3] |
| 11 | define i32 @addrmode_cse_mutation(i8* %base, i32 %count) { |
| 12 | %offset = mul i32 %count, 277288 |
| 13 | %ptr = getelementptr i8, i8* %base, i32 %offset |
| 14 | %val = load volatile i8, i8* %ptr |
| 15 | %res = mul i32 %count, 34661 |
| 16 | ret i32 %res |
| 17 | } |
| Tim Northover | 761bcda | 2017-05-03 16:54:30 +0000 | [diff] [blame] | 18 | |
| 19 | ; CHECK-LABEL: addrmode_cse_multi_use: |
| 20 | ; CHECK-NOT: {{ldrb|ldrb.w}} {{r[0-9]+}}, [{{r[0-9]+}}, {{r[0-9]+}}, lsl #3] |
| 21 | define i32 @addrmode_cse_multi_use(i8* %base, i32 %count) { |
| 22 | %offset = mul i32 %count, 277288 |
| 23 | %ptr = getelementptr i8, i8* %base, i32 %offset |
| 24 | %val = load volatile i8, i8* %ptr |
| 25 | %res = mul i32 %count, 34661 |
| 26 | %res.1 = add i32 %res, %offset |
| 27 | ret i32 %res.1 |
| 28 | } |