diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp index 6e3bdbf..13fcc19 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp @@ -864,24 +864,6 @@ bool WebAssemblyRegStackify::runOnMachineFunction(MachineFunction &MF) { if (WebAssembly::isArgument(DefI->getOpcode())) continue; - // Currently catch's return value register cannot be stackified, because - // the wasm LLVM backend currently does not support live-in values - // entering blocks, which is a part of multi-value proposal. - // - // Once we support live-in values of wasm blocks, this can be: - // catch ; push exnref value onto stack - // block exnref -> i32 - // br_on_exn $__cpp_exception ; pop the exnref value - // end_block - // - // But because we don't support it yet, the catch instruction's dst - // register should be assigned to a local to be propagated across - // 'block' boundary now. - // - // TODO: Fix this once we support the multivalue blocks - if (DefI->getOpcode() == WebAssembly::CATCH) - continue; - MachineOperand *Def = DefI->findRegisterDefOperand(Reg); assert(Def != nullptr); |