diff options
Diffstat (limited to 'test/CodeGen/SystemZ/Large/branch-range-02.py')
| -rw-r--r-- | test/CodeGen/SystemZ/Large/branch-range-02.py | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/Large/branch-range-02.py b/test/CodeGen/SystemZ/Large/branch-range-02.py new file mode 100644 index 0000000000000..0b21ced99a1f8 --- /dev/null +++ b/test/CodeGen/SystemZ/Large/branch-range-02.py @@ -0,0 +1,82 @@ +# 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]] + +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 xrange(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 *%%stop, i64 %d' % (i, i) + print ' %%acur%d = load volatile 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 '}' |