83 lines
2.1 KiB
Python
83 lines
2.1 KiB
Python
# 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, 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 '}'
|