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

# RUN: llc -run-pass xray-instrumentation -mtriple=x86_64-unknown-linux-gnu -o - %s | FileCheck %s
#
# Make sure we can handle empty functions.
---
name: empty
tracksRegLiveness: true
liveins:
  - { reg: '%edi'}
body:            |
  bb.0:
    ; CHECK-NOT: PATCHABLE_FUNCTION_ENTER
...
[XRay] Fix assertion failure on empty machine basic blocks (PR 31424) The original version of the code in XRayInstrumentation.cpp assumed that functions may not have empty machine basic blocks (or that the first one couldn't be). This change addresses that by special-casing that specific situation. We provide two .mir test-cases to make sure we're handling this appropriately. Fixes llvm.org/PR31424. Reviewers: chandlerc Subscribers: varno, llvm-commits Differential Revision: https://reviews.llvm.org/D27913 llvm-svn: 290091 2016-12-19 17:20:38 +08:00			`# RUN: llc -run-pass xray-instrumentation -mtriple=x86_64-unknown-linux-gnu -o - %s \| FileCheck %s`
			`#`
			`# Make sure we can handle empty functions.`
			`---`
			`name: empty`
			`tracksRegLiveness: true`
			`liveins:`
			`- { reg: '%edi'}`
			`body: \|`
			`bb.0:`
			`; CHECK-NOT: PATCHABLE_FUNCTION_ENTER`
			`...`