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Commit | Line | Data |
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1a4d82fc JJ |
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 | |
3 | ||
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: | |
8 | # | |
9 | # count == (4096 - 168) / 8 + 6 + 1 == 498 | |
10 | # | |
11 | # Add in some extra room and check both %r15+4096 (the first out-of-range slot) | |
12 | # and %r15+4104. | |
13 | # | |
14 | # CHECK: f1: | |
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]]) | |
20 | # CHECK: br %r14 | |
21 | count = 500 | |
22 | ||
23 | print 'declare void @foo()' | |
24 | print '' | |
25 | print 'define void @f1(i64 *%base0, i64 *%base1) {' | |
26 | ||
27 | for i in range(count): | |
28 | print ' %%ptr%d = getelementptr i64 *%%base%d, i64 %d' % (i, i % 2, i / 2) | |
29 | print ' %%val%d = load i64 *%%ptr%d' % (i, i) | |
30 | print '' | |
31 | ||
32 | print ' call void @foo()' | |
33 | print '' | |
34 | ||
35 | for i in range(count): | |
36 | print ' store i64 %%val%d, i64 *%%ptr%d' % (i, i) | |
37 | ||
38 | print '' | |
39 | print ' ret void' | |
40 | print '}' |