| # Test normal conditional branches in cases where block alignments cause | |
| # some branches to be out of range. | |
| # RUN: %python %s | llc -mtriple=s390x-linux-gnu -align-all-blocks=8 | FileCheck %s | |
| # Construct: | |
| # | |
| # b0: | |
| # conditional branch to end | |
| # ... | |
| # b<N>: | |
| # conditional branch to end | |
| # b<N+1>: | |
| # conditional branch to b0 | |
| # ... | |
| # b<2*N>: | |
| # conditional branch to b0 | |
| # end: | |
| # | |
| # with N == 256 + 4. The -align-all-blocks=8 option ensures that all blocks | |
| # are 256 bytes in size. The first 4 blocks and the last 4 blocks are then | |
| # out of range. | |
| # | |
| # CHECK: c %r4, 0(%r3) | |
| # CHECK: jge [[LABEL:\.L[^ ]*]] | |
| # CHECK: c %r4, 4(%r3) | |
| # CHECK: jge [[LABEL]] | |
| # CHECK: c %r4, 8(%r3) | |
| # CHECK: jge [[LABEL]] | |
| # CHECK: c %r4, 12(%r3) | |
| # CHECK: jge [[LABEL]] | |
| # CHECK: c %r4, 16(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 20(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 24(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 28(%r3) | |
| # CHECK: je [[LABEL]] | |
| # ...lots of other blocks... | |
| # CHECK: c %r4, 1004(%r3) | |
| # CHECK: je [[LABEL:\.L[^ ]*]] | |
| # CHECK: c %r4, 1008(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 1012(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 1016(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 1020(%r3) | |
| # CHECK: je [[LABEL]] | |
| # CHECK: c %r4, 1024(%r3) | |
| # CHECK: jge [[LABEL]] | |
| # CHECK: c %r4, 1028(%r3) | |
| # CHECK: jge [[LABEL]] | |
| # CHECK: c %r4, 1032(%r3) | |
| # CHECK: jge [[LABEL]] | |
| # CHECK: c %r4, 1036(%r3) | |
| # CHECK: jge [[LABEL]] | |
| from __future__ import print_function | |
| blocks = 256 + 4 | |
| print("define void @f1(i8 *%base, i32 *%stop, i32 %limit) {") | |
| print("entry:") | |
| print(" br label %b0") | |
| print("") | |
| a, b = 1, 1 | |
| for i in range(blocks): | |
| a, b = b, a + b | |
| value = a % 256 | |
| next = "b%d" % (i + 1) if i + 1 < blocks else "end" | |
| other = "end" if 2 * i < blocks else "b0" | |
| print("b%d:" % i) | |
| print(" store volatile i8 %d, i8 *%%base" % value) | |
| print(" %%astop%d = getelementptr i32, i32 *%%stop, i64 %d" % (i, i)) | |
| print(" %%acur%d = load i32 , i32 *%%astop%d" % (i, i)) | |
| print(" %%atest%d = icmp eq i32 %%limit, %%acur%d" % (i, i)) | |
| print(" br i1 %%atest%d, label %%%s, label %%%s" % (i, other, next)) | |
| print("") | |
| print("%s:" % next) | |
| print(" ret void") | |
| print("}") |