mirror of
https://github.com/RPCS3/llvm.git
synced 2026-01-31 01:25:19 +01:00
b7f3617104
Summary: In this patch, `ISD::RETURNADDR` is lowered on the emscripten target to the new Emscripten runtime function `emscripten_return_address`, which implements the functionality. Patch by Guanzhong Chen Reviewers: tlively, aheejin Reviewed By: tlively Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D62210 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@361454 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
669 B
LLVM
20 lines
669 B
LLVM
; 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)
|