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 22from __future__ import print_function 23 24count = 500 25 26print("declare void @foo()") 27print("") 28print("define void @f1(i64 *%base0, i64 *%base1) {") 29 30for i in range(count): 31 print(" %%ptr%d = getelementptr i64, i64 *%%base%d, i64 %d" % (i, i % 2, i / 2)) 32 print(" %%val%d = load i64 , i64 *%%ptr%d" % (i, i)) 33 print("") 34 35print(" call void @foo()") 36print("") 37 38for i in range(count): 39 print(" store i64 %%val%d, i64 *%%ptr%d" % (i, i)) 40 41print("") 42print(" ret void") 43print("}") 44