Summary:
Wasm does not currently support `llvm.clear_cache` intrinsic, and this
prints a proper error message instead of segfault.
Reviewers: dschuff, sbc100, sunfish
Subscribers: jgravelle-google, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64322
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365731
91177308-0d34-0410-b5e6-
96231b3b80d8
void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const override;
+ const char *getClearCacheBuiltinName() const override {
+ report_fatal_error("llvm.clear_cache is not supported on wasm");
+ }
+
// Custom lowering hooks.
SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;
SDValue LowerFrameIndex(SDValue Op, SelectionDAG &DAG) const;
--- /dev/null
+; RUN: not llc < %s -asm-verbose=false 2>&1 | FileCheck %s
+
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK: LLVM ERROR: llvm.clear_cache is not supported on wasm
+define void @clear_cache(i8* %begin, i8* %end) {
+entry:
+ call void @llvm.clear_cache(i8* %begin, i8* %end)
+ ret void
+}
+
+declare void @llvm.clear_cache(i8*, i8*)