File: return-address-emscripten.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (19 lines) | stat: -rw-r--r-- 665 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; RUN: llc < %s -asm-verbose=false | FileCheck %s

target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-emscripten"

; This tests the implementation of __builtin_return_address on emscripten

; CHECK-LABEL: test_returnaddress:
; CHECK-NEXT: .functype test_returnaddress () -> (i32){{$}}
; CHECK-NEXT: {{^}} i32.const 0{{$}}
; CHECK-NEXT: {{^}} call emscripten_return_address{{$}}
; CHECK-NEXT: {{^}} end_function{{$}}
define i8* @test_returnaddress() {
  %r = call i8* @llvm.returnaddress(i32 0)
  ret i8* %r
}

; LLVM represents __builtin_return_address as call to this function in IR.
declare i8* @llvm.returnaddress(i32 immarg)