1 # Test 32-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 4 bytes. Each decrement and branch occupies 4
20 # bytes if BRCT can be used, otherwise it occupies 10 bytes (AHI + BRCL).
21 # This means that loop 6 contains 5 * 4 + 0xffd8 + 5 * 4 == 0x10000 bytes
22 # and is therefore (just) in range. Loop 7 is out of range.
24 # CHECK: brct {{%r[0-9]+}}
25 # CHECK: brct {{%r[0-9]+}}
26 # CHECK: brct {{%r[0-9]+}}
27 # CHECK: brct {{%r[0-9]+}}
28 # CHECK: brct {{%r[0-9]+}}
29 # CHECK: brct {{%r[0-9]+}}
30 # CHECK: ahi {{%r[0-9]+}}, -1
32 # CHECK: ahi {{%r[0-9]+}}, -1
38 print 'define void @f1(i8 *%base, i32 *%counts) {'
41 for i in xrange(branch_blocks - 1, -1, -1):
42 print ' %%countptr%d = getelementptr i32 *%%counts, i64 %d' % (i, i)
43 print ' %%initcount%d = load i32 *%%countptr%d' % (i, i)
44 print ' br label %%loop%d' % i
47 block1 = 'entry' if i == branch_blocks - 1 else 'loop%d' % (i + 1)
48 block2 = 'loop0' if i == 0 else 'after%d' % (i - 1)
49 print (' %%count%d = phi i32 [ %%initcount%d, %%%s ],'
50 ' [ %%nextcount%d, %%%s ]' % (i, i, block1, i, block2))
53 for i in xrange(0, main_size, 6):
55 offset = 4096 + b % 500000
57 print ' %%ptr%d = getelementptr i8 *%%base, i64 %d' % (i, offset)
58 print ' store volatile i8 %d, i8 *%%ptr%d' % (value, i)
60 for i in xrange(branch_blocks):
61 print ' %%nextcount%d = add i32 %%count%d, -1' % (i, i)
62 print ' %%test%d = icmp ne i32 %%nextcount%d, 0' % (i, i)
63 print ' br i1 %%test%d, label %%loop%d, label %%after%d' % (i, i, i)