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author | Chris Lattner <sabre@nondot.org> | 2010-04-05 23:11:24 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2010-04-05 23:11:24 +0000 |
commit | af632c91a0090d8448dd10e48d8ce53f31be0a21 (patch) | |
tree | 00257cf1f6f007b8ceee7f19097c24c7e428f758 /lib/Support/SourceMgr.cpp | |
parent | e072ab869159015743d280a5b0390b68430b1dc0 (diff) |
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
Diffstat (limited to 'lib/Support/SourceMgr.cpp')
0 files changed, 0 insertions, 0 deletions