85 lines · python
1# Test normal conditional branches in cases where block alignments cause2# some branches to be out of range.3# RUN: %python %s | llc -mtriple=s390x-linux-gnu -align-all-blocks=8 | FileCheck %s4 5# Construct:6#7# b0:8# conditional branch to end9# ...10# b<N>:11# conditional branch to end12# b<N+1>:13# conditional branch to b014# ...15# b<2*N>:16# conditional branch to b017# end:18#19# with N == 256 + 4. The -align-all-blocks=8 option ensures that all blocks20# are 256 bytes in size. The first 4 blocks and the last 4 blocks are then21# out of range.22#23# CHECK: c %r4, 0(%r3)24# CHECK: jge [[LABEL:\.L[^ ]*]]25# CHECK: c %r4, 4(%r3)26# CHECK: jge [[LABEL]]27# CHECK: c %r4, 8(%r3)28# CHECK: jge [[LABEL]]29# CHECK: c %r4, 12(%r3)30# CHECK: jge [[LABEL]]31# CHECK: c %r4, 16(%r3)32# CHECK: je [[LABEL]]33# CHECK: c %r4, 20(%r3)34# CHECK: je [[LABEL]]35# CHECK: c %r4, 24(%r3)36# CHECK: je [[LABEL]]37# CHECK: c %r4, 28(%r3)38# CHECK: je [[LABEL]]39# ...lots of other blocks...40# CHECK: c %r4, 1004(%r3)41# CHECK: je [[LABEL:\.L[^ ]*]]42# CHECK: c %r4, 1008(%r3)43# CHECK: je [[LABEL]]44# CHECK: c %r4, 1012(%r3)45# CHECK: je [[LABEL]]46# CHECK: c %r4, 1016(%r3)47# CHECK: je [[LABEL]]48# CHECK: c %r4, 1020(%r3)49# CHECK: je [[LABEL]]50# CHECK: c %r4, 1024(%r3)51# CHECK: jge [[LABEL]]52# CHECK: c %r4, 1028(%r3)53# CHECK: jge [[LABEL]]54# CHECK: c %r4, 1032(%r3)55# CHECK: jge [[LABEL]]56# CHECK: c %r4, 1036(%r3)57# CHECK: jge [[LABEL]]58 59from __future__ import print_function60 61blocks = 256 + 462 63print("define void @f1(i8 *%base, i32 *%stop, i32 %limit) {")64print("entry:")65print(" br label %b0")66print("")67 68a, b = 1, 169for i in range(blocks):70 a, b = b, a + b71 value = a % 25672 next = "b%d" % (i + 1) if i + 1 < blocks else "end"73 other = "end" if 2 * i < blocks else "b0"74 print("b%d:" % i)75 print(" store volatile i8 %d, i8 *%%base" % value)76 print(" %%astop%d = getelementptr i32, i32 *%%stop, i64 %d" % (i, i))77 print(" %%acur%d = load i32 , i32 *%%astop%d" % (i, i))78 print(" %%atest%d = icmp eq i32 %%limit, %%acur%d" % (i, i))79 print(" br i1 %%atest%d, label %%%s, label %%%s" % (i, other, next))80 81print("")82print("%s:" % next)83print(" ret void")84print("}")85