1 # Test 64-bit BRANCH RELATIVE ON COUNT in cases where some branches are out
3 # RUN: python %s | llc -mtriple=s390x-linux-gnu | FileCheck %s
11 # 0xffd8 bytes, from MVIY instructions
12 # conditional branch to main
16 # conditional branch to loopN
19 # Each load occupies 6 bytes. Each decrement and branch occupies 4
20 # bytes if BRCTG can be used, otherwise it occupies 10 bytes (AGHI + BRCL).
21 # This means that loop 5 contains 4 * 6 + 0xffd8 + 4 * 4 == 0x10000 bytes
22 # and is therefore (just) in range. Loop 6 is out of range.
24 # CHECK: brctg {{%r[0-9]+}}
25 # CHECK: brctg {{%r[0-9]+}}
26 # CHECK: brctg {{%r[0-9]+}}
27 # CHECK: brctg {{%r[0-9]+}}
28 # CHECK: brctg {{%r[0-9]+}}
29 # CHECK: aghi {{%r[0-9]+}}, -1
31 # CHECK: aghi {{%r[0-9]+}}, -1
33 # CHECK: aghi {{%r[0-9]+}}, -1
39 print 'define void @f1(i8 *%base, i64 *%counts) {'
42 for i in xrange(branch_blocks - 1, -1, -1):
43 print ' %%countptr%d = getelementptr i64, i64 *%%counts, i64 %d' % (i, i)
44 print ' %%initcount%d = load i64 , i64 *%%countptr%d' % (i, i)
45 print ' br label %%loop%d' % i
48 block1 = 'entry' if i == branch_blocks - 1 else 'loop%d' % (i + 1)
49 block2 = 'loop0' if i == 0 else 'after%d' % (i - 1)
50 print (' %%count%d = phi i64 [ %%initcount%d, %%%s ],'
51 ' [ %%nextcount%d, %%%s ]' % (i, i, block1, i, block2))
54 for i in xrange(0, main_size, 6):
56 offset = 4096 + b % 500000
58 print ' %%ptr%d = getelementptr i8, i8 *%%base, i64 %d' % (i, offset)
59 print ' store volatile i8 %d, i8 *%%ptr%d' % (value, i)
61 for i in xrange(branch_blocks):
62 print ' %%nextcount%d = add i64 %%count%d, -1' % (i, i)
63 print ' %%test%d = icmp ne i64 %%nextcount%d, 0' % (i, i)
64 print ' br i1 %%test%d, label %%loop%d, label %%after%d' % (i, i, i)