similar to: [LLVMdev] Create target with alternate syntax for globals?

2012/9/9 ryan baird <ryanrbaird at gmail.com>: > I'm working on building a target for llvm that's the intermediate language > of another compiler, so that the other compiler can benifit from llvm's > optimization passes. > > I essentially made a copy of the mips backend, and then started changing the > output to match the intermediate language of the compiler.

I'm building a target for the intermediate language of another compiler. The other intermediate language is close to an assembly language (RTL, 1 operation per line), so I based my target off of the Mips target. However, the intermediate language i'm targetting does not support tabs before the instructions. I've looked through the files and found that the tab comes from the

I forgot to mention, the generated file that has the tab is VPOGenAsmWriter.inc. On Sat, Sep 8, 2012 at 2:43 PM, ryan baird <ryanrbaird at gmail.com> wrote: > I'm building a target for the intermediate language of another compiler. > The other intermediate language is close to an assembly language (RTL, 1 > operation per line), so I based my target off of the Mips target.

Ryan, I've always been bothered by this tab character that doesn't come from the target. The line you're looking for I believe is from /utils/TableGen/AsmWriterEmitter.cpp at line 428. In my opinion the target should control whether a prefix is printed before an instruction. Thanks, Javier From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of ryan

I am compiling the following code for the MIPS architecture: unsigned char trunc(float f) { return (unsigned char) f; } and it produces the following assembly (directives removed for convenience: trunc: trunc.w.s $f0, $f12 mfc1 $2, $f0 jr $ra nop However, this does not seem to produce the correct output for negative numbers. When I run the following code, I get

> > I didn't realize the code was undefined, I'll let my professor know; but > for code comparison purposes we're still seeking advice on producing the > output that matches the other compilers (even if it involves doing a > translation on the .ll file or additional translation to the produced > assembly). We can't fairly compare the code if it doesn't do the

I compile these two lines in llc @tst1 = internal global [4 x i8] zeroinitializer; @tst2 = internal global [4 x i8] [i8 0, i8 1, i8 2, i8 3]; @tst1 is emited via MCStreamer::EmitCommonSymbol while the other is emited via MCStreamer::EmitLabel followed by MCStreamer::EmitBytes from what I can tell, only symbols with common linkage should me emitted by MCStreamer::EmitCommonSymbol, is this the

I just accidently sent a partially complete email, so this contains the rest (sorry!) I'm working on translating llvm's optimized intermediate code to another compiler's intermediate code, and I'm working on the PHI instruction. Here's an example phi instruction to help explain what I'm trying to do: %inc25 = phi i32 [ 1, %entry ], [ %inc, %for.body ] What I would want to

Thanks for your quick response Joerg. We have a very small test case where there is global array and its address space attribute specified like in the following code const int __attribute__((address_space(256))) fangle[13] = {2341, 4681, 7022, 9362, 11703, 1403,16384, 18725, 21065, 23406, 25746, 28087, 30427}; I need to put its initializer in another memory because it has a different

On May 7, 2010, at 12:39 AM, Nathan Jeffords wrote: > On Fri, May 7, 2010 at 12:03 AM, Chris Lattner <clattner at apple.com> wrote: > > On May 6, 2010, at 10:01 PM, Nathan Jeffords wrote: > > > I compile these two lines in llc > > > > @tst1 = internal global [4 x i8] zeroinitializer; > > @tst2 = internal global [4 x i8] [i8 0, i8 1, i8 2, i8 3]; >

Esentially, I'm working on a translator someone started building for llvm2.9 that translates an optimized .lln file to another intermediate language, and I'm porting it to 3.1. There is a new intrinsic that pops up in our test cases' lln files that never used to, llvm.lifetime.start. I looked up the description: "The 'llvm.lifetime.start' intrinsic specifies the start of

Is there a pass I can use after reg2mem to get rid of occurances like this?: store i32 %cond, i32* %cond.reg2mem %cond.reload = load i32* %cond.reg2mem store i32 %cond.reload, i32* %cond4.reg2mem Essentially, in this case, reg2mem creates an extra memory space to store and load a value from just here, and never uses the value again; since this isn't efficient code, I'm wondering if

I'm working on a target based on the MIPS target, and when I copy f64 values into 32 bit registers for calling functions, I need the operation to work on a of 32 bit registers (because the language I'm translating to isn't actually mips). I've been looking at how to do this, but I haven't been able to figure it out. Since the Mips target code is still really close to mine,

Le 07/05/2012 17:15, Joerg Sonnenberger a écrit : > On Mon, May 07, 2012 at 05:15:59PM +0200, Ivan Llopard wrote: >> Thanks for your quick response Joerg. >> >> We have a very small test case where there is global array and its >> address space attribute specified like in the following code >> >> const int __attribute__((address_space(256))) fangle[13] =

Hi, Trying to build AOT version of vmkit java, building for that classpath glibj.zip: $ cd vmkit/tools/vmjc/libvmjc $ make ENABLE_OPTIMIZED=1 DISABLE_ASSERTIONS=1 REQUIRES_FRAME_POINTER=1 has eventually, after 50 minutes, brought: <<< llvm[0]: Compiling glibj.zip to llvm llvm[0]: Optimizing glibj.zip llvm[0]: Compiling glibj.zip.bc to native UNREACHABLE executed! 0 llc

I was reading about the order of optimizations in the code generation stage here: http://llvm.org/docs/CodeGenerator.html#the-high-level-design-of-the-code-generator This is the part that's interesting to me: 3. SSA-based Machine Code Optimizations<http://llvm.org/docs/CodeGenerator.html#ssa-based-machine-code-optimizations>— This optional stage consists of a series of machine-code

I'm working on translating llvm's optimized intermediate code to another compiler's intermediate code, and I'm working on the PHI instruction. Here's an example phi instruction to help explain what I'm trying to do: %inc25 = phi i32 [ 1, %entry ], [ %inc, %for.body ] What I would want to do here is allocate some memory memory (i'm trying to use %phi1 = alloca i32,

On May 4, 2010, at 11:03 AM, Nathan Jeffords wrote: > This is a brain-dump of my thoughts on the MCStreamer interface after several > days of digging around trying to get a COFF writer working. Great! Something that is worth pointing out is that the MCStreamer API is intended to directly reflect what is happening in .s files. We basically want one MCStreamer callback to correspond to one

>From llvm-gcc-4.2/trunk/gcc/llvm-debug.cpp: void DebugInfo::EmitGlobalVariable(GlobalVariable *GV, tree decl) { // Gather location information. expanded_location Loc = expand_location(DECL_SOURCE_LOCATION(decl)); DIType TyD = getOrCreateType(TREE_TYPE(decl)); const char *DispName = GV->getNameStr().c_str(); Isn't this use of c_str() dodgy, because the temporary string returned

On Mon, May 07, 2012 at 05:15:59PM +0200, Ivan Llopard wrote: > Thanks for your quick response Joerg. > > We have a very small test case where there is global array and its > address space attribute specified like in the following code > > const int __attribute__((address_space(256))) fangle[13] = > {2341, 4681, 7022, 9362, 11703, 1403,16384, > 18725, 21065, 23406,