File: swift-async-unwind.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (13 lines) | stat: -rw-r--r-- 609 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
; RUN: llc -mtriple=arm64-apple-ios %s -filetype=obj -o - | llvm-objdump --unwind-info - | FileCheck %s

; Swift asynchronous context is incompatible with the compact unwind encoding
; that currently exists and assumes callee-saved registers are right next to FP
; in a particular order. This isn't a problem now because C++ exceptions aren't
; allowed to unwind through Swift code, but at least make sure the compact info
; says to use DWARF correctly.

; CHECK: compact encoding: 0x03000000
define void @foo(i8* swiftasync %in) "frame-pointer"="all" {
  call void asm sideeffect "", "~{x23}"()
  ret void
}