similar to: Clang command line to invoke LLVM flags

Hi there, I'm trying to invoke options in clang-cl. Clang-cl -xclang -fvectorize test.cpp But it shows unknown argument: -fvectorize. I checked options.td and -xclang and -fvectorize options are there. Is there anyway we can change clang to support vector options? Thanks, Xiaochu -------------- next part -------------- An HTML attachment was scrubbed... URL:

On Thu, 2013-01-31 at 11:23 -0600, Bill Schmidt wrote: > On Thu, 2013-01-31 at 10:17 -0600, Bill Schmidt wrote: > > > > On Thu, 2013-01-31 at 09:42 -0600, Hal Finkel wrote: > > > ----- Original Message ----- > > > > From: "Bill Schmidt" <wschmidt at linux.vnet.ibm.com> > > > > To: llvmdev at cs.uiuc.edu > > > > Sent:

On Thu, 2013-01-31 at 11:29 -0600, Bill Schmidt wrote: > On Thu, 2013-01-31 at 11:23 -0600, Bill Schmidt wrote: > > On Thu, 2013-01-31 at 10:17 -0600, Bill Schmidt wrote: > > > > > > On Thu, 2013-01-31 at 09:42 -0600, Hal Finkel wrote: > > > > ----- Original Message ----- > > > > > From: "Bill Schmidt" <wschmidt at

Hi Andrey, Thanks. I found even when loop vectorizer and SLP vectorizer are enabled, my simple test still not get optimized. I also tried clang pragma in my test to force vectorization. What do you think is the problem? Test: #define SIZE 8 void bar(int *A, int* B,int K) { #pragma clang loop vectorize(enable) vectorize_width(2) unroll_count(8) for (int i = 0; i < SIZE; ++i) A[i]

Hi Daniel, I increased the size of your test to be 128 but -stats still shows no loop optimized... Xiaochu On Aug 12, 2016 11:11 AM, "Daniel Berlin" <dberlin at dberlin.org> wrote: > It's not possible to know that A and B don't alias in this example. It's > almost certainly not profitable to add a runtime check given the size of > the loop. > > >

On Thu, 2013-01-31 at 09:42 -0600, Hal Finkel wrote: > ----- Original Message ----- > > From: "Bill Schmidt" <wschmidt at linux.vnet.ibm.com> > > To: llvmdev at cs.uiuc.edu > > Sent: Thursday, January 31, 2013 9:26:15 AM > > Subject: [LLVMdev] Getting command line options to affect subtarget features > > > > The problem I'm trying to

On Thu, 2013-01-31 at 10:17 -0600, Bill Schmidt wrote: > > On Thu, 2013-01-31 at 09:42 -0600, Hal Finkel wrote: > > ----- Original Message ----- > > > From: "Bill Schmidt" <wschmidt at linux.vnet.ibm.com> > > > To: llvmdev at cs.uiuc.edu > > > Sent: Thursday, January 31, 2013 9:26:15 AM > > > Subject: [LLVMdev] Getting command line

I'm not compiling it to x86. Should loop optimizer something independent of the target? If so, should the vectorized code on IR level? On Aug 12, 2016 11:39 AM, "Daniel Berlin" <dberlin at dberlin.org> wrote: > cat > test.c > > #define SIZE 128 > > void bar(int *restrict A, int* restrict B,int K) { > > #pragma clang loop vectorize(enable)

Hi there , I use clang-cl /Qvec test.c to compile the code. But the pass LoopVectorizer is never invoked. I was wondering if this is sufficient to enable auto vectorizer? Thanks, Xiaochu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160811/8b6cb760/attachment.html>

Nice! Thanks, Tom. It works. On Wed, Sep 9, 2015 at 12:30 PM Tom Stellard <tom at stellard.net> wrote: > On Wed, Sep 09, 2015 at 07:21:30PM +0000, Xiaochu Liu via llvm-dev wrote: > > Dear there, > > > > I'm trying to use clang to invoke my backend to generate obj code using > > command: > > > > clang -target x-linux-gnu global.c -c > > >

Oh, they have selection details in the end. Let me check that first... On Sat, Jul 4, 2015 at 4:05 PM Xiaochu Liu <xiaochu1122 at gmail.com> wrote: > Hi Matt, > > I tried debug-only=isel and have some more informations. > The steps before 'Legalized selection'( excluding it) all use v2i32 load. > At the step of 'Legalized selection', it replaced one v2i32

Dear there, I'm trying to use clang to invoke my backend to generate obj code using command: clang -target x-linux-gnu global.c -c But it shows me an error: clang: error: assembler command failed with exit code 1 (use -v to see invocation) I have assembler setup in my backend but it is incorrectly setup (not currently using any assembler). Is there a way for clang to not invoke assembler

Hi Marcello, Thanks for your reply. I will try to pass down the mask! I have one more question. In my backend I return CSR_RegMask in getCallPreservedMask and return CSR_SaveList in getCalleeSavedRegs. Is that a correct setup? I dumped the regmask and found that callee saved regs are marked 1 and non-callee saved regs are 0. Thanks, Xiaochu On Wed, Aug 26, 2015 at 5:58 PM Marcello Maggioni

Hi Tim, Thanks for your message! It turns out that the infrastructure (an outdated one) that I am working on is using gcc+dragonegg to generate llvm code: gcc -m32 -S -c -O0 -fplugin=$(DRAGONEGG_SO) -fplugin-arg-dragonegg-emit-ir $< -o $@.tmp It directly generates llvm code with fadd, etc. I'm not familiar with dragonegg plugin... Thanks, XIaochu On Wed, Mar 16, 2016 at 12:00 PM,

Hi Hal, Thanks for your reply and it is helpful! I have a quick question: When I use BuildMI to build instructions in this case, do I have to add all three of the register operands explicitly (operand 0 and 1 are the same)? Thanks, Xiaochu On Tue, Nov 24, 2015 at 3:14 PM, Hal Finkel <hfinkel at anl.gov> wrote: > ----- Original Message ----- >> From: "Xiaochu Liu via

Thanks. I'm gonna try tomorrow and let you know. On Thu, Jul 2, 2015 at 6:51 PM Matt Arsenault <Matthew.Arsenault at amd.com> wrote: > On 07/02/2015 06:41 PM, Xiaochu Liu wrote: > > Hi Matt, > > > > I did call addRegisterClass in TargetLowering for all the possible > > types in the register. And for typecasting instructions (i32 to i64), > > it works.

Dear there, I was trying to compile a code with only integer type variables and integer operations. Clang/llvm kept showing me llvm code with floating-point instructions (fmul, fadd, fptosi, etc.). Is there a way in Clang or llvm to stop the compiler from doing that? My experiment does not allow floating-point operations... Thanks, Xiaochu

We have developed and tested an optimization pass using LLVM, and have been able to build other software such as gzip while running our pass by passing "clang" and "-Xclang -load -Xclang <path to .so>" as configure options. Now we would like to try and build android while running our pass only on certain files. It seems that android has its own version of LLVM built into

The problem I'm trying to solve: Invoking clang on PowerPC with -fno-altivec has no effect. >From what I've been able to piece together, PPC.td specifies various CPUs and the processor features available on each. So for example we have: def FeatureAltivec : SubtargetFeature<"altivec","HasAltivec", "true",

Dear there, I was wondering how to preserve registers (caller saved) across calls. I implemented getCalleeSavedRegs and getCallPreservedMask. But the non-callee-saved registers are still not saved by caller. I want to spill these registers in use on stack right before the call. From my understanding, the register allocator in llvm will do the spill and restoring automatically? Is there anything I