Displaying 20 results from an estimated 2665 matches for "getelementptr".
2015 Jun 22
2
[LLVMdev] bb-vectorizer transforms only part of the block
...anks,
Frank
; ModuleID = '<stdin>'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define void @main(i64 %lo, i64 %hi, float* noalias %arg0, float* noalias
%arg1, float* noalias %arg2) {
entrypoint:
%0 = getelementptr float* %arg1, i64 64
%1 = getelementptr float* %arg2, i64 64
%2 = getelementptr float* %arg0, i64 64
%3 = bitcast float* %arg1 to <4 x float>*
%4 = bitcast float* %0 to <4 x float>*
%5 = bitcast float* %arg2 to <4 x float>*
%6 = bitcast float* %1 to <4 x float...
2015 Jul 01
3
[LLVMdev] SLP vectorizer on AVX feature
...success. In any case,
the target architecture should be detected with the -datalayout pass, right?
Any idea what I am missing?
Frank
-------------- next part --------------
define void @main(i64 %lo, i64 %hi, float* noalias %arg0, float* noalias %arg1, float* noalias %arg2) {
entrypoint:
%0 = getelementptr float* %arg1, i32 0
%1 = load float* %0
%2 = getelementptr float* %arg2, i32 0
%3 = load float* %2
%4 = fadd float %3, %1
%5 = getelementptr float* %arg0, i32 0
store float %4, float* %5
%6 = getelementptr float* %arg1, i32 1
%7 = load float* %6
%8 = getelementptr float* %arg2, i3...
2014 Aug 07
3
[LLVMdev] MCJIT generates MOVAPS on unaligned address
...struction requires the memory address to be 16 byte
aligned which 88 plus something aligned to 4 byte isn't.
Here the according IR code which was produced from the SLP vectorizer:
define void @func(float* noalias %arg0, float* noalias %arg1, float*
noalias %arg2) {
entrypoint:
...
%104 = getelementptr float* %arg0, i32 22
...
%204 = bitcast float* %104 to <4 x float>*
store <4 x float> %198, <4 x float>* %204
This in itself not wrong. However, shouldn't the lowering pass recognize
the wrong alignment?
I am using LLVM 3.4.2 as available as source code from llvm.org....
2016 Apr 29
2
[MemorySSA] Potential CachingMemorySSAWalker bug
...nt.html>
-------------- next part --------------
; opt -early-cse -S < LoadShorts-simple2.ll
target triple = "aarch64--linux-gnu"
%S1 = type { i32, i32, i16, i16, i8, i8 }
define void @test() {
entry:
%call1 = call noalias i8* @malloc()
%0 = bitcast i8* %call1 to %S1*
%ui = getelementptr inbounds %S1, %S1* %0, i32 0, i32 0
store i32 undef, i32* %ui, align 4
%us = getelementptr inbounds %S1, %S1* %0, i32 0, i32 2
store i16 undef, i16* %us, align 4
%s = getelementptr inbounds %S1, %S1* %0, i32 0, i32 3
store i16 undef, i16* %s, align 2
%ub = getelementptr inbounds %S1, %S...
2014 Aug 07
3
[LLVMdev] How to broaden the SLP vectorizer's search
On 7 August 2014 17:33, Chad Rosier <mcrosier at codeaurora.org> wrote:
> You might consider filing a bug (llvm.org/bugs) requesting a flag, but I
> don't know if the code owners want to expose such a flag.
I'm not sure that's a good idea as a raw access to that limit, as
there are no guarantees that it'll stay the same. But maybe a flag
turning some
2011 May 03
3
[LLVMdev] GVN Infinite loop
Hi,
GVN seems to be running in an infinite loop on my example. I have attached
the output of one iteration. I cant seem to reduce the testcase either.
Any pointers to how to reduce the test case.
THanks,
Arushi
GVN iteration: 8
GVN WIDENED LOAD: %0 = load i8* getelementptr inbounds
(%struct.CHESS_POSITION* @search, i64 0, i32 23), align 2, !dbg !875
TO: %1 = load i16* bitcast (i8* getelementptr inbounds
(%struct.CHESS_POSITION* @search, i64 0, i32 23) to i16*), align 2
GVN COERCED INST:
%0 = load i8* getelementptr inbounds (%struct.CHESS_POSITION* @search, i64
0,...
2012 Feb 16
0
[LLVMdev] Wrong AliasAnalysis::getModRefInfo result
...;();
for (Module::iterator it = M.begin(); it != M.end(); it++){
Function &F = *it;
errs().write_escaped(F.getName()) << '\n';
for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I)
{
Instruction *Inst = &*I;
if ( GetElementPtrInst *gep = dyn_cast<GetElementPtrInst>(Inst) )
geps.push_back(gep);
}
}
errs() << "List of GEPs:\n";
for(std::list<GetElementPtrInst* >::iterator itGep1
= geps.begin(); itGep1 != geps.end(); itGep1++){
GetElement...
2012 Feb 15
2
[LLVMdev] Wrong AliasAnalysis::getModRefInfo result
...nst_begin(F), E = inst_end(F); I != E; ++I) {
Instruction *Inst = &*I;
if ( CallInst *ci = dyn_cast<CallInst>(Inst) ){
ci->dump();
for(int i = 0; i < ci->getNumArgOperands(); i++){
Value *v = ci->getArgOperand(i);
if (GetElementPtrInst *vi = dyn_cast<GetElementPtrInst>(v)){
Value *vPtr = vi->getPointerOperand();
vPtr->dump();
if ( AllocaInst *allo = dyn_cast<AllocaInst>(vPtr) ) {
const Type *t = allo->getAllocatedType();
if ( const...
2012 Feb 16
0
[LLVMdev] Wrong AliasAnalysis::getModRefInfo result
Thanks Duncan! You are right! If I type the command "opt -basicaa -mypass
...", then the output makes sense.
Now, how can you specify which AA to use in the code?
Regards,
Welson
On Thu, Feb 16, 2012 at 12:05 PM, Duncan Sands <baldrick at free.fr> wrote:
> Hi Welson, the default alias analysis is -no-aa. As the name suggests it
> just returns MayAlias for everything.
2012 Feb 16
2
[LLVMdev] Wrong AliasAnalysis::getModRefInfo result
Hi Welson, the default alias analysis is -no-aa. As the name suggests it
just returns MayAlias for everything. Maybe you are using that one?
Best wishes, Duncan.
2011 May 04
0
[LLVMdev] GVN Infinite loop
...ases that cause infinite loops (it has a -timeout flag), I'd try it. Even if this doesn't help, please do file a bug with whatever you have. This is likely to be a recent regression.
-Chris
>
> THanks,
> Arushi
>
> GVN iteration: 8
> GVN WIDENED LOAD: %0 = load i8* getelementptr inbounds (%struct.CHESS_POSITION* @search, i64 0, i32 23), align 2, !dbg !875
> TO: %1 = load i16* bitcast (i8* getelementptr inbounds (%struct.CHESS_POSITION* @search, i64 0, i32 23) to i16*), align 2
> GVN COERCED INST:
> %0 = load i8* getelementptr inbounds (%struct.CHESS_POSITION*...
2016 Oct 06
2
LoopVectorizer -- generating bad and unhandled shufflevector sequence
...ec.ptr332, %while.body320 ], [ %74,
%while.body320.preheader ]
%rl.0289 = phi i64* [ %incdec.ptr333, %while.body320 ], [ %75,
%while.body320.preheader ]
%len.0288 = phi i32 [ %dec, %while.body320 ], [ %conv316,
%while.body320.preheader ]
%dec = add nsw i32 %len.0288, -1
%incdec.ptr = getelementptr inbounds i64, i64* %ll.0290, i64 1
%176 = load i64, i64* %ll.0290, align 8
%incdec.ptr321 = getelementptr inbounds i64, i64* %rl.0289, i64 1
%177 = load i64, i64* %rl.0289, align 8
%and322 = and i64 %177, %176
%incdec.ptr323 = getelementptr inbounds i64, i64* %dl.0291, i64 1
store...
2014 Sep 19
3
[LLVMdev] [Vectorization] Mis match in code generated
...ectorization :*target datalayout =
"e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "x86_64-pc-linux-gnu"
; Function Attrs: nounwind
define void @foo(i32* nocapture readonly %a, i32* nocapture %sum) #0 {
entry:
%0 = load i32* %a, align 4, !tbaa !1
%arrayidx1 = getelementptr inbounds i32* %a, i32 1
%1 = load i32* %arrayidx1, align 4, !tbaa !1
%add = add nsw i32 %1, %0
%arrayidx2 = getelementptr inbounds i32* %a, i32 2
%2 = load i32* %arrayidx2, align 4, !tbaa !1
%add3 = add nsw i32 %add, %2
%arrayidx4 = getelementptr inbounds i32* %a, i32 3
%3 = load i32*...
2012 Jul 31
3
[LLVMdev] [DragonEgg] Mysterious FRAME coming from gimple to LLVM
...2
store %struct.FRAME.matmul* %CHAIN.41, %struct.FRAME.matmul**
%CHAIN.41_addr
%0 = load %struct.FRAME.matmul** %CHAIN.41_addr, align 64
%"ssa point" = bitcast i32 0 to i32
br label %"2"
"2": ; preds = %entry
%1 = getelementptr inbounds %struct.FRAME.matmul* %0, i32 0, i32 12
%2 = load i32** %1, align 8
%3 = load i32* %2, align 4
%4 = icmp sle i32 1, %3
br i1 %4, label %"3", label %"8"
"3": ; preds = %"7", %"2"
%5 = p...
2011 Oct 18
2
[LLVMdev] LLVM constant propagation optimization question
Hi all,
I'm writting following LLVM assembly:
; ModuleID = 'structaccess.ll'
%struct._anon0 = type <{ i32, i32, i32 }>
@s = common global %struct._anon0 zeroinitializer
define arm_aapcscc void @foo() nounwind {
L.entry:
store i32 5, i32* getelementptr inbounds (%struct._anon0* @s, i32 0, i32
0)
store i32 10, i32* getelementptr inbounds (%struct._anon0* @s, i32 0, i32
1)
%0 = load i32* getelementptr inbounds (%struct._anon0* @s, i32 0, i32 0)
%1 = load i32* getelementptr inbounds (%struct._anon0* @s, i32 0, i32 1)
%2 = add i32 %0, %1
st...
2013 Feb 14
1
[LLVMdev] LiveIntervals analysis problem
...ca [13 x i16], align 2
%u.i = alloca [13 x i16], align 2
%w.i = alloca [13 x i16], align 2
%e = alloca [13 x i16], align 2
%rnd = alloca %struct.LDPARMS, align 4
%outbuf = alloca [57 x i8], align 1
%du = alloca double, align 4
store double %d, double* %du, align 4, !tbaa !0
%rlast = getelementptr inbounds %struct.LDPARMS* %rnd, i32 0, i32 0
store i32 -1, i32* %rlast, align 4, !tbaa !3
%rndprc = getelementptr inbounds %struct.LDPARMS* %rnd, i32 0, i32 1
store i32 144, i32* %rndprc, align 4, !tbaa !3
%_result = getelementptr inbounds %struct._reent* %ptr, i32 0, i32 10
%0 = load %st...
2014 Sep 18
2
[LLVMdev] [Vectorization] Mis match in code generated
...ine i32
> @foo(i32* nocapture readonly %a, i32 %n) #0 {entry: br label
> %for.bodyfor.body: ; preds =
> %for.body, %entry %i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
> %sum.04 = phi i32 [ 0, %entry ], [ %add, %for.body ] %arrayidx =
> getelementptr inbounds i32* %a, i32 %i.05 %0 = load i32* %arrayidx, align
> 4, !tbaa !1 %add = add nsw i32 %0, %sum.04 %inc = add nsw i32 %i.05, 1
> %exitcond = icmp eq i32 %i.05, 15 br i1 %exitcond, label %for.end, label
> %for.bodyfor.end: ; preds =
> %f...
2015 Dec 11
2
Optimization of successive constant stores
Hmm... found an interesting issue:
Given:
%2 = getelementptr inbounds %UodStructType* %0, i32 0, i32 0
store i8 1, i8* %2, align 8
%3 = getelementptr inbounds %UodStructType* %0, i32 0, i32 1
store i8 2, i8* %3, align 1
%4 = getelementptr inbounds %UodStructType* %0, i32 0, i32 2
store i8 3, i8* %4, align 2
%5 = getelementptr inbounds...
2014 Sep 18
2
[LLVMdev] [Vectorization] Mis match in code generated
...trs: nounwind readonlydefine i32
@foo(i32* nocapture readonly %a, i32 %n) #0 {entry: br label
%for.bodyfor.body: ; preds =
%for.body, %entry %i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%sum.04 = phi i32 [ 0, %entry ], [ %add, %for.body ] %arrayidx =
getelementptr inbounds i32* %a, i32 %i.05 %0 = load i32* %arrayidx, align
4, !tbaa !1 %add = add nsw i32 %0, %sum.04 %inc = add nsw i32 %i.05, 1
%exitcond = icmp eq i32 %i.05, 15 br i1 %exitcond, label %for.end, label
%for.bodyfor.end: ; preds =
%for.body ret i32 %ad...
2010 May 29
3
[LLVMdev] Vectorized LLVM IR
...rated loops that can be auto-vectorized by some compilers like Intel ICC, this works quite well...)
The scalar LLVM code is :
define void @llvm_compute(%struct.llvm_dsp* %obj, i32 %count, float** noalias %inputs, float** noalias %outputs) nounwind readnone ssp {
entry:
%input_array_ptr0 = getelementptr inbounds float** %inputs, i64 0
%input0 = load float** %input_array_ptr0, align 8
%input_array_ptr1 = getelementptr inbounds float** %inputs, i64 1
%input1 = load float** %input_array_ptr1, align 8
%input_array_ptr2 = getelementptr inbounds float** %inputs, i64 2
%input2 =...