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Give AsmParser an option to control whether it finalizes 

the stream.  New demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000	subq	$0x08,%rsp
0000000000000004	movl	%edi,(%rsp)
0000000000000007	movl	%edi,%eax
0000000000000009	incl	%eax
000000000000000b	movl	%eax,(%rsp)
000000000000000e	movl	%eax,0x04(%rsp)
0000000000000012	addq	$0x08,%rsp
0000000000000016	ret

llvm-svn: 100492
This commit is contained in:
Chris Lattner 2010-04-05 23:15:42 +00:00
parent 8900ef1931
commit 3b21e4d404
3 changed files with 7 additions and 4 deletions
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2
llvm/include/llvm/MC/MCParser/AsmParser.h
View File

@ -64,7 +64,7 @@ public:
const MCAsmInfo &MAI);
~AsmParser();
bool Run(bool NoInitialTextSection);
bool Run(bool NoInitialTextSection, bool NoFinalize = false);
void AddDirectiveHandler(StringRef Directive,

3
llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
View File

@ -66,7 +66,8 @@ void AsmPrinter::EmitInlineAsm(StringRef Str) const {
Parser.setTargetParser(*TAP.get());
// Don't implicitly switch to the text section before the asm.
int Res = Parser.Run(/*NoInitialTextSection*/ true);
int Res = Parser.Run(/*NoInitialTextSection*/ true,
/*NoFinalize*/ true);
if (Res)
llvm_report_error("Error parsing inline asm\n");
}

6
llvm/lib/MC/MCParser/AsmParser.cpp
View File

@ -138,7 +138,7 @@ const AsmToken &AsmParser::Lex() {
return *tok;
}
bool AsmParser::Run(bool NoInitialTextSection) {
bool AsmParser::Run(bool NoInitialTextSection, bool NoFinalize) {
// Create the initial section, if requested.
//
// FIXME: Target hook & command line option for initial section.
@ -190,7 +190,9 @@ bool AsmParser::Run(bool NoInitialTextSection) {
TheCondState.Ignore != StartingCondState.Ignore)
return TokError("unmatched .ifs or .elses");
if (!HadError)
// Finalize the output stream if there are no errors and if the client wants
// us to.
if (!HadError && !NoFinalize)
Out.Finish();
return HadError;