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[WebAssembly] Enabled -triple=wasm32-unknown-unknown-wasm path using ELF directive parser.

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This is a temporary solution until a proper WASM implementation of
MCAsmParserExtension is in place, but at least for now will unblock this
path.

Added test to make sure this path works with the WASM Assembler.

Patch By Wouter van Oortmerssen!

Differential Revision: https://reviews.llvm.org/D45386

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330370 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sam Clegg 2018-04-19 22:00:53 +00:00
parent c625656e26
commit cbec9b05be
2 changed files with 8 additions and 3 deletions
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10
lib/MC/MCParser/AsmParser.cpp
View File

@ -691,7 +691,11 @@ AsmParser::AsmParser(SourceMgr &SM, MCContext &Ctx, MCStreamer &Out,
PlatformParser.reset(createELFAsmParser());
break;
case MCObjectFileInfo::IsWasm:
llvm_unreachable("Wasm parsing not supported yet");
// TODO: WASM will need its own MCAsmParserExtension implementation, but
// for now we can re-use the ELF one, since the directives can be the
// same for now, and this makes the -triple=wasm32-unknown-unknown-wasm
// path work.
PlatformParser.reset(createELFAsmParser());
break;
}
@ -1305,7 +1309,7 @@ AsmParser::applyModifierToExpr(const MCExpr *E,
/// the End argument will be filled with the last location pointed to the '>'
/// character.
/// There is a gap between the AltMacro's documentation and the single quote implementation.
/// There is a gap between the AltMacro's documentation and the single quote implementation.
/// GCC does not fully support this feature and so we will not support it.
/// TODO: Adding single quote as a string.
bool AsmParser::isAltmacroString(SMLoc &StrLoc, SMLoc &EndLoc) {
@ -2204,7 +2208,7 @@ bool AsmParser::parseStatement(ParseStatementInfo &Info,
}
// Parse and erase curly braces marking block start/end
bool
bool
AsmParser::parseCurlyBlockScope(SmallVectorImpl<AsmRewrite> &AsmStrRewrites) {
// Identify curly brace marking block start/end
if (Lexer.isNot(AsmToken::LCurly) && Lexer.isNot(AsmToken::RCurly))

1
test/MC/WebAssembly/basic-assembly.s
View File

@ -1,4 +1,5 @@
# RUN: llvm-mc -triple=wasm32-unknown-unknown-elf < %s | FileCheck %s
# RUN: llvm-mc -triple=wasm32-unknown-unknown-wasm < %s | FileCheck %s
.text
.type test0,@function