llvm/test/CodeGen/SystemZ/Large/large-ada-02.py

   1 # Test code generation for retrieving function descriptors
   2 # from the ADA when the ADA is extremely large and forces the
   3 # generation of a different instruction sequence
   4 # RUN: %python %s | llc -mtriple=s390x-ibm-zos -O2 | FileCheck %s
   5
   6 # CHECK: algfi  8,{{[0-9]+}}
   7 # CHECK: la     8,0(8)
   8
   9 from __future__ import print_function
  10
  11 num_calls = 35000
  12
  13 print("define hidden signext i32 @main() {")
  14 print("entry:")
  15
  16 for i in range(num_calls):
  17     print("  call void @foo%d()" % i)
  18
  19 # This is added to force the use of register r8 to generate
  20 # la 8, 0(8) which generates the algfi instruction
  21 print('%0 = call ptr asm " LGR $0,$1\0A", "=r,{r8}"(ptr nonnull @foo)')
  22 print("  call void @bar(ptr noundef %0)")
  23 print("ret i32 0")
  24 print("}")
  25
  26 for i in range(num_calls):
  27     print("declare void @foo%d(...)" % i)
  28
  29 print("declare void @bar(ptr noundef)")
  30 print("define internal void @foo() {")
  31 print("entry:")
  32 print("  ret void")
  33 print("  }")