[WebAssembly] Added default stack-only instruction mode for MC.

Summary:
Made it convert from register to stack based instructions, and removed the registers.
Fixes to related code that was expecting register based instructions.
Added the correct testing flag to all tests, depending on what the
format they were expecting so far.
Translated one test to stack format as example: reg-stackify-stack.ll

tested:
llvm-lit -v `find test -name WebAssembly`
unittests/MC/*

Reviewers: dschuff, sunfish

Subscribers: sbc100, jgravelle-google, eraman, aheejin, llvm-commits, jfb

Differential Revision: https://reviews.llvm.org/D51241

llvm-svn: 340750

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp b/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
index 99c814612f7..b6a4bdd2957 100644
--- a/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
+++ b/llvm/lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
@@ -58,7 +58,8 @@ void WebAssemblyInstPrinter::printInst(const MCInst *MI, raw_ostream &OS,
       // we have an extra flags operand which is not currently printed, for
       // compatiblity reasons.
       if (i != 0 &&
-          (MI->getOpcode() != WebAssembly::CALL_INDIRECT_VOID ||
+          ((MI->getOpcode() != WebAssembly::CALL_INDIRECT_VOID &&
+            MI->getOpcode() != WebAssembly::CALL_INDIRECT_VOID_S) ||
            i != Desc.getNumOperands()))
         OS << ", ";
       printOperand(MI, i, OS);