diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp index 18e2e50..99a2426 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp @@ -50,6 +50,12 @@ WebAssemblyTargetMachine::WebAssemblyTargetMachine( : "e-p:32:32-i64:64-n32:64-S128", TT, CPU, FS, Options, RM, CM, OL), TLOF(make_unique<WebAssemblyTargetObjectFile>()) { + // WebAssembly type-checks expressions, but a noreturn function with a return + // type that doesn't match the context will cause a check failure. So we lower + // LLVM 'unreachable' to ISD::TRAP and then lower that to WebAssembly's + // 'unreachable' expression which is meant for that case. + this->Options.TrapUnreachable = true; + initAsmInfo(); // We need a reducible CFG, so disable some optimizations which tend to |