File: cfi-inserter-noreturnblock.mir

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (30 lines) | stat: -rw-r--r-- 636 bytes parent folder | download | duplicates (32) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
# RUN: llc -o - %s -mtriple=x86_64-- -verify-cfiinstrs \
# RUN:     -run-pass=cfi-instr-inserter

# Test that CFI verifier does not report inconsistent offset for the
# 'noreturn' block.
---
name: testNoreturnBlock
body: |
  bb.0:
    CFI_INSTRUCTION def_cfa_offset 24
    JCC_1 %bb.2, 5, implicit undef $eflags

  bb.1:
    CFI_INSTRUCTION def_cfa_offset 32

  bb.2:
    TRAP
...

# C code to reproduce the issue, built with
# '-O2 -mllvm -tail-merge-size=1 -mllvm -verify-cfiinstrs':
#
# void foo1(int v) __attribute__((noreturn)) {
#   if (v == 1) {
#     __builtin_trap();
#   }
#   if (foo2(v)) {
#     __builtin_trap();
#   }
# }