1 # Test cases where MVC is used for spill slots that end up being out of range.
2 # RUN: python %s | llc -mtriple=s390x-linux-gnu | FileCheck %s
4 # There are 8 usable call-saved GPRs, two of which are needed for the base
5 # registers. The first 160 bytes of the frame are needed for the ABI
6 # call frame, and a further 8 bytes are needed for the emergency spill slot.
7 # That means we will have at least one out-of-range slot if:
9 # count == (4096 - 168) / 8 + 6 + 1 == 498
11 # Add in some extra room and check both %r15+4096 (the first out-of-range slot)
15 # CHECK: lay [[REG:%r[0-5]]], 4096(%r15)
16 # CHECK: mvc 0(8,[[REG]]), {{[0-9]+}}({{%r[0-9]+}})
17 # CHECK: brasl %r14, foo@PLT
18 # CHECK: lay [[REG:%r[0-5]]], 4096(%r15)
19 # CHECK: mvc {{[0-9]+}}(8,{{%r[0-9]+}}), 8([[REG]])
23 print 'declare void @foo()'
25 print 'define void @f1(i64 *%base0, i64 *%base1) {'
27 for i in range(count):
28 print ' %%ptr%d = getelementptr i64, i64 *%%base%d, i64 %d' % (i, i % 2, i / 2)
29 print ' %%val%d = load i64 , i64 *%%ptr%d' % (i, i)
32 print ' call void @foo()'
35 for i in range(count):
36 print ' store i64 %%val%d, i64 *%%ptr%d' % (i, i)