| Ulrich Weigand | 9e3577f | 2013-05-06 16:17:29 +0000 | [diff] [blame] | 1 | ; Test 32-bit byteswaps from registers to memory. |
| 2 | ; |
| 3 | ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| 4 | |
| 5 | declare i32 @llvm.bswap.i32(i32 %a) |
| 6 | |
| 7 | ; Check STRV with no displacement. |
| 8 | define void @f1(i32 *%src, i32 %a) { |
| 9 | ; CHECK: f1: |
| 10 | ; CHECK: strv %r3, 0(%r2) |
| 11 | ; CHECK: br %r14 |
| 12 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 13 | store i32 %swapped, i32 *%src |
| 14 | ret void |
| 15 | } |
| 16 | |
| 17 | ; Check the high end of the aligned STRV range. |
| 18 | define void @f2(i32 *%src, i32 %a) { |
| 19 | ; CHECK: f2: |
| 20 | ; CHECK: strv %r3, 524284(%r2) |
| 21 | ; CHECK: br %r14 |
| 22 | %ptr = getelementptr i32 *%src, i64 131071 |
| 23 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 24 | store i32 %swapped, i32 *%ptr |
| 25 | ret void |
| 26 | } |
| 27 | |
| 28 | ; Check the next word up, which needs separate address logic. |
| 29 | ; Other sequences besides this one would be OK. |
| 30 | define void @f3(i32 *%src, i32 %a) { |
| 31 | ; CHECK: f3: |
| 32 | ; CHECK: agfi %r2, 524288 |
| 33 | ; CHECK: strv %r3, 0(%r2) |
| 34 | ; CHECK: br %r14 |
| 35 | %ptr = getelementptr i32 *%src, i64 131072 |
| 36 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 37 | store i32 %swapped, i32 *%ptr |
| 38 | ret void |
| 39 | } |
| 40 | |
| 41 | ; Check the high end of the negative aligned STRV range. |
| 42 | define void @f4(i32 *%src, i32 %a) { |
| 43 | ; CHECK: f4: |
| 44 | ; CHECK: strv %r3, -4(%r2) |
| 45 | ; CHECK: br %r14 |
| 46 | %ptr = getelementptr i32 *%src, i64 -1 |
| 47 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 48 | store i32 %swapped, i32 *%ptr |
| 49 | ret void |
| 50 | } |
| 51 | |
| 52 | ; Check the low end of the STRV range. |
| 53 | define void @f5(i32 *%src, i32 %a) { |
| 54 | ; CHECK: f5: |
| 55 | ; CHECK: strv %r3, -524288(%r2) |
| 56 | ; CHECK: br %r14 |
| 57 | %ptr = getelementptr i32 *%src, i64 -131072 |
| 58 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 59 | store i32 %swapped, i32 *%ptr |
| 60 | ret void |
| 61 | } |
| 62 | |
| 63 | ; Check the next word down, which needs separate address logic. |
| 64 | ; Other sequences besides this one would be OK. |
| 65 | define void @f6(i32 *%src, i32 %a) { |
| 66 | ; CHECK: f6: |
| 67 | ; CHECK: agfi %r2, -524292 |
| 68 | ; CHECK: strv %r3, 0(%r2) |
| 69 | ; CHECK: br %r14 |
| 70 | %ptr = getelementptr i32 *%src, i64 -131073 |
| 71 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 72 | store i32 %swapped, i32 *%ptr |
| 73 | ret void |
| 74 | } |
| 75 | |
| 76 | ; Check that STRV allows an index. |
| 77 | define void @f7(i64 %src, i64 %index, i32 %a) { |
| 78 | ; CHECK: f7: |
| 79 | ; CHECK: strv %r4, 524287({{%r3,%r2|%r2,%r3}}) |
| 80 | ; CHECK: br %r14 |
| 81 | %add1 = add i64 %src, %index |
| 82 | %add2 = add i64 %add1, 524287 |
| 83 | %ptr = inttoptr i64 %add2 to i32 * |
| 84 | %swapped = call i32 @llvm.bswap.i32(i32 %a) |
| 85 | store i32 %swapped, i32 *%ptr |
| 86 | ret void |
| 87 | } |