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Hi Mehdi, Should I apply your attached patch on my llvm3.8 source firstly? Or should I use the latest llvm SVN trunk instead? Steven Shi Intel\SSG\STO\UEFI Firmware Tel: +86 021-61166522 iNet: 821-6522 From: mehdi.amini at apple.com [mailto:mehdi.amini at apple.com] Sent: Monday, May 30, 2016 2:13 PM To: Shi, Steven <steven.shi at intel.com> Cc: Umesh Kalappa <umesh.kalappa0 at gmail.com>; eliben at gmail.com; llvm-dev...

> On May 29, 2016, at 5:44 PM, Shi, Steven <steven.shi at intel.com> wrote: > > (And I doubt the GNU linker supports LTO with LLVM). > [Steven]: I’ve pushed GNU Binutils ld to support LLVM gold plugin, see detail in this bug https://sourceware.org/bugzilla/show_bug.cgi?id=20070 <https://sourceware.org/bugzilla/sho...

Hi Steven, > On May 29, 2016, at 11:28 PM, Shi, Steven <steven.shi at intel.com> wrote: > > Hi Mehdi, > Should I apply your attached patch on my llvm3.8 source firstly? Or should I use the latest llvm SVN trunk instead? I wrote it on trunk, but I expect it to be fairly easy to port on 3.8. This is really just quickly plumbing a...

> On May 29, 2016, at 5:10 PM, Shi, Steven <steven.shi at intel.com> wrote: > > Hi Mehdi, > GCC LTO seems support large code model in my side as below, if the code model is linker specific, does the GCC LTO use a special linker which is different from the one in GNU Binutils? I don't know anything about GCC. (An...

Hi, I searched the archives and did not find a good solution to that. assume I have 10 sets and I want to have the common character elements of them. how could i do that? -- Weiwei Shi, Ph.D Research Scientist GeneGO, Inc. "Did you always know?" "No, I did not. But I believed..." ---Matrix III

...r. I can build my own clang in my side if needed. I’m happy to know it is not difficult to enable the large code model in LLVM LTO and “it is really a trivial option to add”. Could you let me know how to enable it? My lots of work have been blocked by the large code model issue. Thank you! Steven Shi Intel\SSG\STO\UEFI Firmware Tel: +86 021-61166522 iNet: 821-6522 From: mehdi.amini at apple.com [mailto:mehdi.amini at apple.com] Sent: Monday, May 30, 2016 8:17 AM To: Shi, Steven <steven.shi at intel.com> Cc: Umesh Kalappa <umesh.kalappa0 at gmail.com>; eliben at gmail.com; llvm-dev...

Hi Rui, A quick question: Does lld-link only work with clang-cl with windows-msvc option? Can lld-link work with clang with linux-gnu option? Thanks Steven Shi Intel\SSG\FID\Firmware Infrastructure From: Shi, Steven Sent: Tuesday, January 29, 2019 1:32 PM To: 'Rui Ueyama' <ruiu at google.com> Cc: llvm-dev at lists.llvm.org Subject: RE: lld write wrong symbol value in .data section if enable -pie > It seems to me that it is a great oppor...

...link /OUT:main.dll /Machine:X64 /DLL /ENTRY:main /DEBUG:GHASH /lldmap main.obj assembly.obj Check to see that there are line zeros in the pdb file: $ llvm-pdbutil" dump -l main.pdb Lines ============================================================ Mod 0000 | `/home/jshi19/llvm/wrongcode/lld_PDB_issue/main.obj`: /home/jshi19/llvm/wrongcode/lld_PDB_issue/main.c (MD5: 5F82BB79FE2DA0B0549B784CFDC37D05) 0001:00000000-0000001A, line/addr entries = 5 3 00000000 ! 0 00000004 ! 5 00000009 ! 0 0000000E ! 9 00000013 ! Thanks Shi, Steven From: Zachary Tu...

On 31 May 2016 at 01:08, Shi, Steven <steven.shi at intel.com> wrote: > Hi Mehdi, > What's the default code model for x86_64 Mac OS X App? Andrew showed me some example code of Mac OS X App as below, which looks to use the small code model but can run at >4GB high address. Small, but PIC. > For exam...

On 7 June 2016 at 10:54, Shi, Steven <steven.shi at intel.com> wrote: > Hi Rafael, > I finally enable the clang LTO build with small code model and PIE, and my clang LTO Uefi firmware works now. Thank you! But I have one more issue on the clang normal build (without LTO) now. I find the small code model + "-f...

Hi Mehdi, The llvm3.8 gold-plugin.cpp is very different from the latest one on trunk. Your patch has compiling failure on llvm3.8 as below. I will try it on latest trunk later. Thank you help anyway! Building CXX object tools/gold/CMakeFiles/LLVMgold.dir/gold-plugin.cpp.o cd /home/jshi19/llvm38releasebuild/tools/gold && /home/jshi19/clang38/bin/clang++ -DGTEST_HAS_RTTI=0 -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/jshi19/llvm38releasebuild/tools/gold -I/home/jshi19/llvm-3.8.0.src/...

...You can say that file A depends on file B if and only if in the graph a section in file A has an edge to a section in file B. There is a plan to dump the graph in a machine-readable format such as JSON so that you can run arbitrary graph analysis algorithms on it. On Wed, Jul 31, 2019 at 10:55 AM Shi, Steven <steven.shi at intel.com> wrote: > Very nice. It can directly help me know which lib and obj file is > redundant in my linker script. > > > > BTW, besides the lib and file level dependency, is it possible to further > print the function and global variable level...

We don't use cl::opt in gold, instead we parse the -plugin-opts that gold passes the plugin (see process_plugin_option). Cheers, Rafael On 30 May 2016 at 02:13, Mehdi Amini <mehdi.amini at apple.com> wrote: > > On May 29, 2016, at 5:44 PM, Shi, Steven <steven.shi at intel.com> wrote: > > (And I doubt the GNU linker supports LTO with LLVM). > [Steven]: I’ve pushed GNU Binutils ld to support LLVM gold plugin, see > detail in this bug https://sourceware.org/bugzilla/show_bug.cgi?id=20070. > The new GNU ld linker works w...

...4004de: 48 b8 a0 19 63 00 00 movabs $0x6319a0,%rax 4004e5: 00 00 00 4004e8: 8b 40 1c mov 0x1c(%rax),%eax 4004eb: 01 45 fc add %eax,-0x4(%rbp) return t; 4004ee: 8b 45 fc mov -0x4(%rbp),%eax } Steven Shi Intel\SSG\STO\UEFI Firmware Tel: +86 021-61166522 iNet: 821-6522 From: mehdi.amini at apple.com [mailto:mehdi.amini at apple.com] Sent: Monday, May 30, 2016 4:28 AM To: Shi, Steven <steven.shi at intel.com> Cc: Umesh Kalappa <umesh.kalappa0 at gmail.com>; eliben at gmail.com; llvm-dev...

Hi, > On May 29, 2016, at 7:36 AM, Shi, Steven <steven.shi at intel.com> wrote: > > Hi Mehdi, > After deeper debug, I found my firmware LTO wrong code issue is related to X64 code model (-mcmodel=large) is always overridden as small (-mcmodel=small) if LTO build. And I don't know how to correctly specific the large c...

...convert ELF to COFF: https://github.com/tianocore/edk2/tree/master/BaseTools/Source/C/GenFw. Our convert tool cannot handle complex relocation types, like GOT based. That’s why we use the symbol hidden visibility, LTO and other options to let gcc/clang not emit complex relocation. Thanks Steven Shi Intel\SSG\FID\Firmware Infrastructure From: Rui Ueyama [mailto:ruiu at google.com] Sent: Tuesday, January 29, 2019 12:38 AM To: Shi, Steven <steven.shi at intel.com> Cc: llvm-dev at lists.llvm.org Subject: Re: lld write wrong symbol value in .data section if enable -pie Hi Steven, This is...

Hi, there: I am wondering if there is a quick way to "reverse" a list like this: t0 <- list(a=1, b=1, c=2, d=1) reverst t0 to t1 > t1 $`1` [1] "a" "b" "d" $`2` [1] "c" thanks. -- Weiwei Shi, Ph.D Research Scientist GeneGO, Inc. "Did you always know?" "No, I did not. But I believed..." ---Matrix III

...uot;)), cl::init(Default)); ... ... // If user said Don't Do That, don't do that. if (UnknownLocations == Disable) return; This issue blocks the LLVM toolchain debugging capability for UEFI firmware. Please help to add the support. Thank you in advance! Thanks Steven Shi From: Shi, Steven Sent: Friday, January 10, 2020 9:43 AM To: Martin Storsjö <martin at martin.st>; David Blaikie <dblaikie at gmail.com> Cc: Reid Kleckner <rnk at google.com>; llvm-dev <llvm-dev at lists.llvm.org>; Rui Ueyama <ruiu at google.com> Subject: RE: [llvm-de...

lld should not crash in this case (so that's a bug that needs fixing), but setting it aside, did you try adding `-fno-builtin` to clang so that clang doesn't handle `memcpy` as a built-in function? On Tue, Jul 16, 2019 at 8:46 PM Shi, Steven <steven.shi at intel.com> wrote: > Hi Rui, > > For the test case in my previous email, if I change the `memcpy` to > `foobar` in memcpy.c, the lld-link report linking error that it cannot find > the _memcpy symbol as below. In uefi firmware, we have to explicitly >...

...Can startup XenU with different configuration IA32 issues contain: VMX can not be created IA32E: Build&Boot SMP xen0 without problem Can startup XenU with different configuration IA32E issues contain: VMX can not be created. Thanks and regards Kuiliang shi(kuiliang.shi@intel.com) Open Source Technology Center Intel Corp. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel