From 26c6765bd6fe1f672b0a58f35a89083518d67465 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Mon, 11 Jan 2016 23:38:05 +0000 Subject: [WebAssembly] Define WebAssembly-specific relocation codes. Currently WebAssembly has two kinds of relocations; data addresses and function addresses. This adds ELF relocations for them, as well as an MC symbol kind to indicate which type of relocation is needed. llvm-svn: 257416 --- llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp') diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp index 7a89f788c1a..e9933b09298 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp @@ -573,7 +573,8 @@ SDValue WebAssemblyTargetLowering::LowerGlobalAddress(SDValue Op, SDLoc DL(Op); const auto *GA = cast(Op); EVT VT = Op.getValueType(); - assert(GA->getTargetFlags() == 0 && "WebAssembly doesn't set target flags"); + assert(GA->getTargetFlags() == 0 && + "Unexpected target flags on generic GlobalAddressSDNode"); if (GA->getAddressSpace() != 0) fail(DL, DAG, "WebAssembly only expects the 0 address space"); return DAG.getNode( @@ -587,9 +588,16 @@ WebAssemblyTargetLowering::LowerExternalSymbol(SDValue Op, SDLoc DL(Op); const auto *ES = cast(Op); EVT VT = Op.getValueType(); - assert(ES->getTargetFlags() == 0 && "WebAssembly doesn't set target flags"); + assert(ES->getTargetFlags() == 0 && + "Unexpected target flags on generic ExternalSymbolSDNode"); + // Set the TargetFlags to 0x1 which indicates that this is a "function" + // symbol rather than a data symbol. We do this unconditionally even though + // we don't know anything about the symbol other than its name, because all + // external symbols used in target-independent SelectionDAG code are for + // functions. return DAG.getNode(WebAssemblyISD::Wrapper, DL, VT, - DAG.getTargetExternalSymbol(ES->getSymbol(), VT)); + DAG.getTargetExternalSymbol(ES->getSymbol(), VT, + /*TargetFlags=*/0x1)); } SDValue WebAssemblyTargetLowering::LowerJumpTable(SDValue Op, -- cgit v1.2.3