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

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# RUN: llc -run-pass xray-instrumentation -mtriple=x86_64-unknown-linux-gnu -o - %s | FileCheck %s
#
# Make sure we can handle empty first basic blocks.
--- |
define i32 @foo() noinline uwtable "xray-instruction-threshold"="1" {
entry:
unreachable
}
...
---
name: foo
tracksRegLiveness: true
liveins:
- { reg: '$edi'}
body: |
bb.0.entry:
liveins: $edi
; CHECK-NOT: PATCHABLE_FUNCTION_ENTER
...