search for: vload

...this which uses the shuffle sequence the vectorizers generated before the reduction intrinsics existed. declare i64 @llvm.experimental.vector.reduce.or.v2i64(<2 x i64>)· declare void @TrapFunc(i64) define void @parseHeaders(i64 * %ptr) { %vptr = bitcast i64 * %ptr to <2 x i64> * %vload = load <2 x i64>, <2 x i64> * %vptr, align 8 %b = shufflevector <2 x i64> %vload, <2 x i64> undef, <2 x i32> <i32 1, i32 undef> %c = or <2 x i64> %vload, %b %vreduce = extractelement <2 x i64> %c, i32 0 %vcheck = icmp eq i64 %vreduce, 0 br...

...the vectorizers generated > before the reduction intrinsics existed. > > declare i64 @llvm.experimental.vector.reduce.or.v2i64(<2 x i64>)· > declare void @TrapFunc(i64) > > define void @parseHeaders(i64 * %ptr) { > %vptr = bitcast i64 * %ptr to <2 x i64> * > %vload = load <2 x i64>, <2 x i64> * %vptr, align 8 > > %b = shufflevector <2 x i64> %vload, <2 x i64> undef, <2 x i32> <i32 1, > i32 undef> > %c = or <2 x i64> %vload, %b > %vreduce = extractelement <2 x i64> %c, i32 0 > > %vche...

...ed. >> >> declare i64 @llvm.experimental.vector.reduce.or.v2i64(<2 x i64>)· >> declare void @TrapFunc(i64) >> >> define void @parseHeaders(i64 * %ptr) { >>   %vptr = bitcast i64 * %ptr to <2 x i64> * >>   %vload = load <2 x i64>, <2 x i64> * %vptr, align 8 >> >>   %b = shufflevector <2 x i64> %vload, <2 x i64> undef, <2 x >> i32> <i32 1, i32 undef> >>   %c = or <2 x i64> %vload, %b >>   %vreduce = extrac...

...insics existed. >>> >>> declare i64 @llvm.experimental.vector.reduce.or.v2i64(<2 x i64>)· >>> declare void @TrapFunc(i64) >>> >>> define void @parseHeaders(i64 * %ptr) { >>> %vptr = bitcast i64 * %ptr to <2 x i64> * >>> %vload = load <2 x i64>, <2 x i64> * %vptr, align 8 >>> >>> %b = shufflevector <2 x i64> %vload, <2 x i64> undef, <2 x i32> <i32 >>> 1, i32 undef> >>> %c = or <2 x i64> %vload, %b >>> %vreduce = extractelement &lt...

Right now there are special SelectionDAG node kinds for operations on "abstract" vector types (VLOAD, VADD, and all the rest), and a special MVT::Vector ValueType for them. These nodes carry two additional operands, constants which specify the vector length and element type. All of this is only used before legalize; then they are replaced with regular node kinds and value types. It seems that a n...

Hello, I'm doing a pca analysis and get unrotated PCA results (using "pca"). I then used "varimax" to rotate the PCs, vload <- varimax(cproj,normalize=TRUE,eps=1e-5) #cproj is the "loadings" from "pca" and calculate the score coefficients with: coef <- solve(correlation matrix of original data) %*% (vload$loadings) Then calculate the scores with: scores <- (standardised original data) %...

...Statistica use? -----Original Message----- From: Williams, Allyson Sent: Tuesday, 3 September 2002 10:20 AM To: r-help at stat.math.ethz.ch Subject: Hello, I'm doing a pca analysis and get unrotated PCA results (using "pca"). I then used "varimax" to rotate the PCs, vload <- varimax(cproj,normalize=TRUE,eps=1e-5) #cproj is the "loadings" from "pca" and calculate the score coefficients with: coef <- solve(correlation matrix of original data) %*% (vload$loadings) Then calculate the scores with: scores <- (standardised original data) %...

Hi, It’s been a few years now since I added some intrinsics for doing vector reductions. We’ve been using them exclusively on AArch64, and I’ve seen some traffic a while ago on list for other targets too. Sander did some work last year to refine the semantics after some discussion. Are we at the point where we can drop the “experimental” from the name? IMO all target should begin to transition

Ok, that makes sense :). , Tobias On Wed, 21 Jul 2004, Chris Lattner wrote: > On Wed, 21 Jul 2004, Tobias Nurmiranta wrote: > > > void *llvm_gc_read(void *ObjPtr, void **FieldPtr) { > > > return *FieldPtr; > > > } > > > > Hm, but doesn't FieldPtr need to be calculated target-specific in those > > cases? > > For the field pointer, one

On Wed, 21 Jul 2004, Tobias Nurmiranta wrote: > > void *llvm_gc_read(void *ObjPtr, void **FieldPtr) { > > return *FieldPtr; > > } > > Hm, but doesn't FieldPtr need to be calculated target-specific in those > cases? For the field pointer, one could use the getelementptr instruction: %pairty = { sbyte, sbyte, int* } %pairPtr = ... %fieldptr = getelementptr

...GCRootValues[i]->getOperand(1); < AllocaInst* a = new AllocaInst(v->getType(), 0, "stackGcRoot", cast<Instruction>(v)); < GCRootValues[i]->setOperand(1, a); < < std::vector<Instruction*> vUses; < std::vector<Instruction*> vLoads; < < for (Value::use_iterator j = v->use_begin(), e = v->use_end(); j != e; ++j) { < if (Instruction *Inst = dyn_cast<Instruction>(*j)) { < LoadInst* l = new LoadInst(a, "loadGcRoot", Inst); < vUses.push_back(Inst); vLoads.pus...

...ou provided, the reuse of XMM0 and XMM1 across loop-unroll instances does not inhibit instruction-level parallelism. Modern X86 processors use register renaming that can eliminate the dependencies in the instruction stream. In the example you provided, the processor should be able to identify the 2-vloads + vadd + vstore sequences as independent and pipeline their execution. Thanks, Zvi From: Hal Finkel [mailto:hfinkel at anl.gov] Sent: Saturday, June 24, 2017 05:17 To: hameeza ahmed <hahmed2305 at gmail.com>; llvm-dev at lists.llvm.org Cc: Demikhovsky, Elena <elena.demikhovsky at intel....

...M0 and XMM1 across loop-unroll instances does not inhibit > instruction-level parallelism. > > Modern X86 processors use register renaming that can eliminate the > dependencies in the instruction stream. In the example you provided, > the processor should be able to identify the 2-vloads + vadd + vstore > sequences as independent and pipeline their execution. > > Thanks, Zvi > > *From:*Hal Finkel [mailto:hfinkel at anl.gov] > *Sent:* Saturday, June 24, 2017 05:17 > *To:* hameeza ahmed <hahmed2305 at gmail.com>; llvm-dev at lists.llvm.org > *Cc:* Demi...

On 4 Jan 2015, at 21:06, Tim Northover <t.p.northover at gmail.com> wrote: >>> I’ve managed to replace the load/store intrinsics with pointer dereferences (along with a typedef to get the alignment correct). This generates 100% the same IR + asm as the auto-vectorized C version (both using -O3), and works with the toolchain in the latest XCode. Are there any concerns around doing

i'm getting a Could not infer all types in pattern! error in my backend. it is happening on the following instruction: VGETITEM: (set GPR:{i32:f32}:$rD, (extractelt:{i32:f32} VR:{v4i32:v4f32}:$rA, GPR:i32:$rB)). how do i make it use appropriate types? in other words if it is f32 then use v4v32 and if it is i32 then use v4f32. i'm not sure even where to start? any help is appreciated.

...teswaps the entire 128-bit number). While pointer dereference does work just as well (and better, given this defect) as VLD1 it is explicitly *not supported*. The ACLE mandates that there are only certain ways to legitimately "create" a vector object - vcreate, vcombine, vreinterpret and vload. NEON intrinsic types don't exist in memory (memory is modelled as a sequence of scalars, as in the C model). For this reason Renato I don't think we should advise people to work around the API, as who knows what problems that will cause later. The reason above is why we map a vloadq_f32()...

Hello, Anton, I'd like to add a small reply regarding this GSoC project that I would like to mentor and I discussed also with Andrei. A good part of our GSoC project is indeed related to this Connex back end that it's not yet part of the LLVM source repository - an important thing proposed in the project is that we plan to perform efficient realignment for this Connex vector

This fixes various problems that cropped up with the vdso patches. - Patch 1 fixes an information leak to userspace. - Patches 2 and 3 fix the kernel build on gold. - Patches 4 and 5 fix Xen (I hope). Konrad, could you could test these on Xen and run 'test_vsyscall test' [1]? I don't have a usable Xen setup. Also, I'd appreciate a review of patches 4 and 5 from some

This fixes various problems that cropped up with the vdso patches. - Patch 1 fixes an information leak to userspace. - Patches 2 and 3 fix the kernel build on gold. - Patches 4 and 5 fix Xen (I hope). Konrad, could you could test these on Xen and run 'test_vsyscall test' [1]? I don't have a usable Xen setup. Also, I'd appreciate a review of patches 4 and 5 from some

This fixes various problems that cropped up with the vdso patches. - Patch 1 fixes an information leak to userspace. - Patches 2 and 3 fix the kernel build on gold. - Patches 4 and 5 fix Xen (I hope). Konrad, could you could test these on Xen and run 'test_vsyscall test' [1]? I don't have a usable Xen setup. Also, I'd appreciate a review of patches 4 and 5 from some