similar to: [LLVMdev] constant pool in large functions

Displaying 20 results from an estimated 900 matches similar to: "[LLVMdev] constant pool in large functions"

2007 Jan 05
0
[LLVMdev] constant pool in large functions
Hi Lauro, This is a very tricky problem to resolve. Basically you need a pass just before code emission to find the proper locations for each constant pool. That means you need: 1. Exact size of each instruction. This can be added with a custom instrinfo that specify instruction length for each target instruction. 2. Probably some kind of constantpool pseudo instruction. The pass can then
2007 Apr 11
2
[LLVMdev] ideas for TLS implementation
For everyone understand which code must be emitted to implement TLS, I will paste the code generated by gcc for a simple function: __thread int a = 1; int f(){ return a; } gcc teste.c -o teste.s -S -O2 (arm-linux-gnueabi): .global a .section .tdata,"awT",%progbits <== special section for tls symbols .align 2 .type a, %object
2006 Dec 20
2
[LLVMdev] [patch] arm: external weak in constant pool
Adds external weak symbols of constant pool to ExtWeakSymbols set. Lauro -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20061220/1aaa0c7b/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: llvm.patch Type: text/x-patch
2007 Aug 13
6
[LLVMdev] LLVM performance test
Hi all, I did a performance test of two real applications (FFMPEG and GTK) on ARM. For more details see: http://laurovenancio.wordpress.com/2007/08/07/llvm-perf-tests/ Lauro
2006 Dec 20
1
[LLVMdev] [patch] arm: external weak in constant pool
without tabs Lauro 2006/12/20, Bill Wendling <isanbard at gmail.com>: > > Hi Lauro, > > Just a stylistic remark; In your "llvm.patch" file, there are tabs in > these lines: > > + if (GV->hasExternalWeakLinkage()) { > + ExtWeakSymbols.insert(GV); > + } > > Others will need to review the patch for correctness, though.
2007 Feb 27
2
[LLVMdev] another problem with function arguments aligment
I think, we must move function arguments lowering from frontend to LLVM core. This lowering is generating machine dependent bytecode. See http://llvm.org/bugs/show_bug.cgi?id=1230 Lauro 2007/2/26, Chris Lattner <sabre at nondot.org>: > On Mon, 26 Feb 2007, Lauro Ramos Venancio wrote: > > The problem is: llvm-gcc generates the same bytecode for both
2007 Feb 26
3
[LLVMdev] another problem with function arguments aligment
The ARM EABI (AAPCS) defines: - i64 values are 8-bytes aligned - "The alignment of an aggregate shall be the alignment of its most-aligned component." So, struct ss { int x; int y; }; void f(int a, struct ss b); r0 <- a r1-r2 <- b void g(int a, long long b); r0 <- a r2-r3 <- b The problem is: llvm-gcc generates the same bytecode for both functions: declare void
2006 Dec 20
0
[LLVMdev] [patch] arm: external weak in constant pool
Hi Lauro, Just a stylistic remark; In your "llvm.patch" file, there are tabs in these lines: + if (GV->hasExternalWeakLinkage()) { + ExtWeakSymbols.insert(GV); + } Others will need to review the patch for correctness, though. -bw On 12/20/06, Lauro Ramos Venancio <lauro.venancio at gmail.com> wrote: > Adds external weak symbols of constant pool to
2007 Apr 01
4
[LLVMdev] Using LLVM as a crosscompiler
Hi Koen, The process to build llvm-gcc as a crosscompiler is basically the same as build a normal gcc as crosscompiler. The differences: you need a LLVM installed (compiled for the host). You must configure llvm-gcc with --enable-llvm. Problems: - Today LLVM supports ARM/EABI, but llvm-gcc don't. You must apply the patch:
2007 Nov 02
0
[LLVMdev] llvm-gcc bootsrtap on ARM
Rafael, Remember that the qemu <= 0.9.0 can misexecute code compiled by LLVM. I think you should test using qemu CVS. Lauro 2007/11/2, Rafael Espindola <espindola at google.com>: > Hello, > > I am trying to bootstrap on ARM linux EABI using a qemu chroot to > better test my changes on at least one more architecture. > > I am using the following configure line:
2008 Jan 21
2
[LLVMdev] LLVM build freezes in scratchbox, ARM target
Hi Arvind, To use llvm inside scratchbox you must use a newer qemu. See http://setanta.wordpress.com/2007/11/20/qemu-arm-eabi-no-scratchbox/ (in Portuguese, but the important things are in bash :) ) I don't know if it is the problem in this case, but it should be the first attempt. Lauro 2008/1/21, Rafael Espindola <espindola at google.com>: >
2007 Feb 09
2
[LLVMdev] problem with function arguments in ARM EABI
> > Yes, you need to override both LowerArguments and LowerCallTo. All of > the current targets / abi's use the default implementation in > SelectionDAGISel.cpp But I guess ARM EABI will be the first. :-) As > far as I can see, this is the only clean way to do it. I expect the > ARM EABI specific implementation will be quite a bit simpler than the > default
2007 Apr 10
2
[LLVMdev] LLVM and TLS
Hi all, I'm trying to make a toolchain for arm-linux-gnueabi using the llvm-gcc. To do this, I made some changes in crosstool 0.42. Everything goes fine until llvm-gcc tries to compile the glibc. llvm-gcc can't compile glibc because it doesn't support TLS (Thread Local Storage). I know there is a bug report about TLS (PR941). Is there someone implementing TLS in LLVM and llvm-gcc?
2007 Apr 11
0
[LLVMdev] ideas for TLS implementation
Hi Lauro, On Wed, 2007-04-11 at 15:15 -0300, Lauro Ramos Venancio wrote: > For everyone understand which code must be emitted to implement TLS, I > will paste the code generated by gcc for a simple function: ... snip ... This proposal sounds really good to me. I only have a couple comments. We have a "section" keyword already developed in LLVM assembly. Perhaps instead of
2008 Jan 28
0
[LLVMdev] llc fails to generate code for arm
HI Arvind, I think you are using an old llc version. VarArg support was implemented a long time ago. Lauro 2008/1/28, Arvind Ayyangar <arvind.ayyangar at gmail.com>: > Hi all, > I had little success installing llvm inside scratchbox for an ARM > build so have been trying to generate assembly code for arm using the > llc utility. However, llc fails to generate code
2008 Jan 28
2
[LLVMdev] llc fails to generate code for arm
Hi all, I had little success installing llvm inside scratchbox for an ARM build so have been trying to generate assembly code for arm using the llc utility. However, llc fails to generate code for arm. Output is as below... arvind at zeus:~/tools/llvm/del$ llc main.bc -o mainarm -filetype=asm -march=arm -f llc: ARMISelDAGToDAG.cpp:73: llvm::SDOperand LowerCALL(llvm::SDOperand,
2007 Nov 02
4
[LLVMdev] llvm-gcc bootsrtap on ARM
Hello, I am trying to bootstrap on ARM linux EABI using a qemu chroot to better test my changes on at least one more architecture. I am using the following configure line: ../gcc/configure --prefix=/home/espindola/install/ --program-prefix=llvm- --enable-languages=c --disable-shared --disable-multilib --enable-llvm=/home/espindola/build --enable-checking
2007 Aug 14
0
[LLVMdev] LLVM performance test
Hi Lauro, On 14 Aug 2007, at 01:10, Lauro Ramos Venancio wrote: > Hi all, > > I did a performance test of two real applications (FFMPEG and GTK) on > ARM. For more details see: > http://laurovenancio.wordpress.com/2007/08/07/llvm-perf-tests/ Could you give me some more information about the applications you compiled and ran? Where can I obtain source
2007 Jun 12
0
[LLVMdev] ARM backend problem ?
Hi Mikael, You are obtaining warning, not an error, right? The most arm cores, including arm1136, can execute mul with rd = rm. So, you can ignore this warning. Lauro 2007/6/12, Peltier, Mikael <m-peltier at ti.com>: > > > > > Hello, > > > > I want to compile a LLVM file into an executable running on ARM platform. > > I use LLVM 2.0 with the
2007 Apr 02
1
[LLVMdev] Using LLVM as a crosscompiler
> > - Today LLVM supports ARM/EABI, but llvm-gcc don't. You must apply the > > patch: > > http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070319/046070.html > > That doesn't apply anymore :( You must use the llvm-gcc4 from the svn. It has some bug fixes that are important to ARM EABI and the patch should apply cleanly.