File: empty-functions.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (30 lines) | stat: -rw-r--r-- 1,049 bytes parent folder | download | duplicates (23)
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 -verify-machineinstrs < %s -mtriple=powerpc-linux-gnu | FileCheck -check-prefix=LINUX-NO-FP %s
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-linux-gnu -frame-pointer=all | FileCheck -check-prefix=LINUX-FP %s

define void @func() {
entry:
  unreachable
}

; An empty function is perfectly fine on ELF.
; LINUX-NO-FP: func:
; LINUX-NO-FP-NEXT: {{^}}.L[[BEGIN:.*]]:{{$}}
; LINUX-NO-FP-NEXT: .cfi_startproc
; LINUX-NO-FP-NEXT: {{^}}#
; LINUX-NO-FP-NEXT: {{^}}.L[[END:.*]]:{{$}}
; LINUX-NO-FP-NEXT: .size   func, .L[[END]]-.L[[BEGIN]]
; LINUX-NO-FP-NEXT: .cfi_endproc

; A cfi directive cannot point to the end of a function.
; LINUX-FP: func:
; LINUX-FP-NEXT: {{^}}.L[[BEGIN:.*]]:{{$}}
; LINUX-FP-NEXT: .cfi_startproc
; LINUX-FP-NEXT: {{^}}#
; LINUX-FP-NEXT: stwu 1, -16(1)
; LINUX-FP-NEXT: stw 31, 12(1)
; LINUX-FP-NEXT:  .cfi_def_cfa_offset 16
; LINUX-FP-NEXT: .cfi_offset r31, -4
; LINUX-FP-NEXT: mr 31, 1
; LINUX-FP-NEXT: {{^}}.L[[END:.*]]:{{$}}
; LINUX-FP-NEXT: .size   func, .L[[END]]-.L[[BEGIN]]
; LINUX-FP-NEXT: .cfi_endproc