From af632c91a0090d8448dd10e48d8ce53f31be0a21 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 5 Apr 2010 23:11:24 +0000
Subject: add .o file writing for inline asm in llc.  Here's a silly demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
<inline asm>:1:2: error: unrecognized instruction
	abc incl    %eax
	^
LLVM ERROR: Error parsing inline asm

Only problem seems to be that the parser finalizes OutStreamer
at the end of the first inline asm, which isn't what we want.
For example:

$ cat asm.c
int foo(int X) {
 __asm__ ("incl    %0" : "+r" (X));
 return X;
}
$ clang asm.c -S -o - -emit-llvm | llc
...
	subq	$8, %rsp
	movl	%edi, (%rsp)
	movl	%edi, %eax
	## InlineAsm Start
	incl    %eax
	## InlineAsm End
	movl	%eax, (%rsp)
	movl	%eax, 4(%rsp)
	addq	$8, %rsp
	ret
$ 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
$

don't stop at inc!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100491 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llc/llc.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tools/llc')

diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index aa977a7032..dccfb26e74 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -214,6 +214,7 @@ int main(int argc, char **argv) {
   // Initialize targets first, so that --version shows registered targets.
   InitializeAllTargets();
   InitializeAllAsmPrinters();
+  InitializeAllAsmParsers();
 
   cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
   
-- 
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