llvm/test/CodeGen/X86/xray-empty-firstmbb.mir

   1 # RUN: llc -run-pass=xray-instrumentation -mtriple=x86_64-unknown-linux-gnu -o - %s | FileCheck %s
   2 #
   3 # Make sure we can handle empty first basic blocks.
   4
   5 --- |
   6
   7   define i32 @foo() noinline uwtable "xray-instruction-threshold"="0" {
   8   entry:
   9     unreachable
  10   }
  11
  12 ...
  13
  14 ---
  15 name: foo
  16 tracksRegLiveness: true
  17 liveins:
  18   - { reg: '$edi'}
  19 body:            |
  20   bb.0.entry:
  21     liveins: $edi
  22     ; CHECK-NOT: PATCHABLE_FUNCTION_ENTER
  23 ...