File: return-address-emscripten.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (19 lines) | stat: -rw-r--r-- 669 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: {{^}} i32.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)