llvm/test/tools/llvm-exegesis/X86/latency/subprocess-rsp.s

   1 # REQUIRES: exegesis-can-measure-latency, x86_64-linux
   2
   3 # RUN: llvm-exegesis -mtriple=x86_64-unknown-unknown -mode=latency -snippets-file=%s -execution-mode=subprocess | FileCheck %s
   4
   5 # Check that we can set the value of RSP in subprocess mode without
   6 # segfaulting as we need to restore it after the rest of the setup is
   7 # complete to prevent loading from the stack where we set it instead
   8 # of where the stack actuall is.
   9
  10 # LLVM-EXEGESIS-MEM-DEF test1 4096 2147483647
  11 # LLVM-EXEGESIS-MEM-MAP test1 1048576
  12 # LLVM-EXEGESIS-DEFREG RAX 100000
  13 # LLVM-EXEGESIS-DEFREG R14 100000
  14 # LLVM-EXEGESIS-DEFREG RSP 100000
  15
  16 movq %r14, (%rax)
  17
  18 # CHECK-NOT: error:           'The benchmarking subprocess sent unexpected signal: Segmentation fault'