| Richard Sandiford | 312425f | 2013-05-20 14:23:08 +0000 | [diff] [blame] | 1 | # Test normal conditional branches in cases where block alignments cause |
| 2 | # some branches to be out of range. |
| 3 | # RUN: python %s | llc -mtriple=s390x-linux-gnu -align-all-blocks=8 | FileCheck %s |
| 4 | |
| 5 | # Construct: |
| 6 | # |
| 7 | # b0: |
| 8 | # conditional branch to end |
| 9 | # ... |
| 10 | # b<N>: |
| 11 | # conditional branch to end |
| 12 | # b<N+1>: |
| 13 | # conditional branch to b0 |
| 14 | # ... |
| 15 | # b<2*N>: |
| 16 | # conditional branch to b0 |
| 17 | # end: |
| 18 | # |
| 19 | # with N == 256 + 4. The -align-all-blocks=8 option ensures that all blocks |
| 20 | # are 256 bytes in size. The first 4 blocks and the last 4 blocks are then |
| 21 | # out of range. |
| 22 | # |
| 23 | # CHECK: c %r4, 0(%r3) |
| 24 | # CHECK: jge [[LABEL:\.L[^ ]*]] |
| 25 | # CHECK: c %r4, 4(%r3) |
| 26 | # CHECK: jge [[LABEL]] |
| 27 | # CHECK: c %r4, 8(%r3) |
| 28 | # CHECK: jge [[LABEL]] |
| 29 | # CHECK: c %r4, 12(%r3) |
| 30 | # CHECK: jge [[LABEL]] |
| 31 | # CHECK: c %r4, 16(%r3) |
| 32 | # CHECK: je [[LABEL]] |
| 33 | # CHECK: c %r4, 20(%r3) |
| 34 | # CHECK: je [[LABEL]] |
| 35 | # CHECK: c %r4, 24(%r3) |
| 36 | # CHECK: je [[LABEL]] |
| 37 | # CHECK: c %r4, 28(%r3) |
| 38 | # CHECK: je [[LABEL]] |
| 39 | # ...lots of other blocks... |
| 40 | # CHECK: c %r4, 1004(%r3) |
| 41 | # CHECK: je [[LABEL:\.L[^ ]*]] |
| 42 | # CHECK: c %r4, 1008(%r3) |
| 43 | # CHECK: je [[LABEL]] |
| 44 | # CHECK: c %r4, 1012(%r3) |
| 45 | # CHECK: je [[LABEL]] |
| 46 | # CHECK: c %r4, 1016(%r3) |
| 47 | # CHECK: je [[LABEL]] |
| 48 | # CHECK: c %r4, 1020(%r3) |
| 49 | # CHECK: je [[LABEL]] |
| 50 | # CHECK: c %r4, 1024(%r3) |
| 51 | # CHECK: jge [[LABEL]] |
| 52 | # CHECK: c %r4, 1028(%r3) |
| 53 | # CHECK: jge [[LABEL]] |
| 54 | # CHECK: c %r4, 1032(%r3) |
| 55 | # CHECK: jge [[LABEL]] |
| 56 | # CHECK: c %r4, 1036(%r3) |
| 57 | # CHECK: jge [[LABEL]] |
| 58 | |
| 59 | blocks = 256 + 4 |
| 60 | |
| 61 | print 'define void @f1(i8 *%base, i32 *%stop, i32 %limit) {' |
| 62 | print 'entry:' |
| 63 | print ' br label %b0' |
| 64 | print '' |
| 65 | |
| 66 | a, b = 1, 1 |
| 67 | for i in xrange(blocks): |
| 68 | a, b = b, a + b |
| 69 | value = a % 256 |
| 70 | next = 'b%d' % (i + 1) if i + 1 < blocks else 'end' |
| 71 | other = 'end' if 2 * i < blocks else 'b0' |
| 72 | print 'b%d:' % i |
| 73 | print ' store volatile i8 %d, i8 *%%base' % value |
| David Blaikie | 2c302a8 | 2015-02-27 23:29:39 +0000 | [diff] [blame] | 74 | print ' %%astop%d = getelementptr i32, i32 *%%stop, i64 %d' % (i, i) |
| David Blaikie | d7e13b0 | 2015-02-27 23:29:33 +0000 | [diff] [blame] | 75 | print ' %%acur%d = load i32 , i32 *%%astop%d' % (i, i) |
| Richard Sandiford | 312425f | 2013-05-20 14:23:08 +0000 | [diff] [blame] | 76 | print ' %%atest%d = icmp eq i32 %%limit, %%acur%d' % (i, i) |
| 77 | print ' br i1 %%atest%d, label %%%s, label %%%s' % (i, other, next) |
| 78 | |
| 79 | print '' |
| 80 | print '%s:' % next |
| 81 | print ' ret void' |
| 82 | print '}' |