From 08d58bcf6ab130edd021c49ae2546e49ec24c28e Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Wed, 23 Dec 2015 00:22:04 +0000 Subject: [WebAssembly] Add a TODO comment for a possible future optimization. llvm-svn: 256306 --- llvm/lib/Target/WebAssembly/WebAssemblyRegNumbering.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyRegNumbering.cpp') diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRegNumbering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRegNumbering.cpp index 0a94533..f621db0 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyRegNumbering.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyRegNumbering.cpp @@ -82,7 +82,8 @@ bool WebAssemblyRegNumbering::runOnMachineFunction(MachineFunction &MF) { } // Then assign regular WebAssembly registers for all remaining used - // virtual registers. + // virtual registers. TODO: Consider sorting the registers by frequency of + // use, to maximize usage of small immediate fields. unsigned NumArgRegs = MFI.getParams().size(); unsigned NumVRegs = MF.getRegInfo().getNumVirtRegs(); unsigned NumStackRegs = 0; -- cgit v1.1