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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
17 lines
579 B
LLVM
17 lines
579 B
LLVM
; RUN: not llc < %s -asm-verbose=false 2>&1 | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; This tests the implementation of __builtin_return_address on the unknown OS.
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; Since this is not implemented, it should fail.
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; CHECK: Non-Emscripten WebAssembly hasn't implemented __builtin_return_address
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define i8* @test_returnaddress() {
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%r = call i8* @llvm.returnaddress(i32 0)
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ret i8* %r
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}
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; LLVM represents __builtin_return_address as call to this function in IR.
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declare i8* @llvm.returnaddress(i32 immarg)
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