Displaying 20 results from an estimated 1000 matches similar to: "[LLVMdev] Adding dependency on MemoryDependenceAnalysis pass to LICM causes opt to get stuck in addPass"
2011 Dec 14
0
[LLVMdev] Adding dependency on MemoryDependenceAnalysis pass to LICM causes opt to get stuck in addPass
On Dec 14, 2011, at 7:09 AM, David Gardner wrote:
> I'm attempting to add some support for hoisting/sinking of memory-using
> intrinsics in loops, and so I want to use MemoryDependenceAnalysis in
> LICM, but when I modify getAnalysisUsge to include this :
>
> virtual void getAnalysisUsage(AnalysisUsage &AU) const {
> AU.setPreservesCFG();
>
2011 Aug 22
1
[LLVMdev] Infinite loop when adding a new analysis pass
I am trying to add an analysis pass as a FunctionPass, and let LICM
(LoopPass) depends upon it. So in LICM.cpp, I have the following:
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequired<DominatorTree>();
AU.addRequired<LoopInfo>();
AU.addRequiredID(LoopSimplifyID);
AU.addRequired<AliasAnalysis>();
2011 Oct 13
2
[LLVMdev] pass utilizing MemoryDependenceAnalysis?
I wrote a pass(that is to be loaded by opt) that I would like to use
in conjunction with MemoryDependenceAnalysis. I have tried using by
including its header and adding this to my pass:
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
errs() << "addRequired called\n";
AU.addRequired<MemoryDependenceAnalysis>();
}
And in my
2012 Apr 12
0
[LLVMdev] Function Pass Manager
Hi again,
I come back to this issue with an example. It's a pass which does
nothing but throw the 'Unable to schedule' error.
namespace {
struct MyPass : public FunctionPass {
static char ID; // Pass identification, replacement for typeid
MyPass() : FunctionPass(ID) {
initializeMyPassPass(*PassRegistry::getPassRegistry());
}
virtual void
2011 Oct 13
0
[LLVMdev] pass utilizing MemoryDependenceAnalysis?
My pass(that I want to use MemoryDependenceAnalysis) is a ModulePass.
When I changed my assignment to:
MD = &getAnalysis<MemoryDependenceAnalysis>(F);
It fixed my initial problem but left me with:
Assertion failed: (ResultPass && "Unable to find requested
analysis info"), function getAnalysisID
On Thu, Oct 13, 2011 at 1:43 PM, ret val <retval386 at
2011 Oct 14
2
[LLVMdev] pass utilizing MemoryDependenceAnalysis?
#include "llvm/Module.h"
#include "llvm/Analysis/MemoryDependenceAnalysis.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
struct Hello: public ModulePass {
public:
static char ID;
MemoryDependenceAnalysis *MD;
Hello(): ModulePass(ID) {
;;
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
2011 Oct 14
0
[LLVMdev] pass utilizing MemoryDependenceAnalysis?
In runOnFunction(), you should check to see if the function F is a
declaration before calling getAnalysis(F). Calling
getAnalysis<FunctionPass>() on a function that is a declaration will
trigger an assertion if the function is just a declaration.
To see if a function is a declaration, call its isDeclaration() method
(i.e. if (F->isDeclaration()) ... )
-- John T.
On 10/13/11 8:09
2011 Oct 15
1
[LLVMdev] pass utilizing MemoryDependenceAnalysis?
This gives me: Assertion failed: (0 && "Unable to find on the fly
pass"), function getOnTheFlyPass, file PassManager.cpp
#include "llvm/Module.h"
#include "llvm/Analysis/MemoryDependenceAnalysis.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
struct Hello: public FunctionPass {
public:
static char ID;
Hello(): FunctionPass(ID) {
2012 Mar 23
3
[LLVMdev] Function Pass Manager
Hi,
I'm writing a function pass which is dynamically loaded by opt and I
need some analysis and passes to be run before my pass:
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<LoopInfo>();
AU.addPreserved<LoopInfo>();
AU.addRequiredID(LoopSimplifyID);
AU.addPreservedID(LoopSimplifyID);
2015 May 09
2
[LLVMdev] about MemoryDependenceAnalysis usage
Hi,
I try to use MemoryDependenceAnalysis in a pass to analyse a simple function:
void fct (int *restrict*restrict M, int *restrict*restrict L) {
S1: M[1][1] = 1;
S2: L[2][2] = 2;
}
When I iterate over MemoryDependenceAnalysis on the S2 statement, I get the load instruction for the first depth of the array, that’s ok. But I get also the load and store for the S1 statement.
I assume the
2015 May 11
2
[LLVMdev] about MemoryDependenceAnalysis usage
add -basicaa to your command line :)
On Mon, May 11, 2015 at 7:15 AM, Willy WOLFF <willy.mh.wolff at gmail.com> wrote:
> I play a bit more with MemoryDependenceAnalysis by wrapping my pass, and
> call explicitely BasicAliasAnalysis. Its still using No Alias Analysis.
>
> How can I let MemoryDependenceAnalysis use BasicAliasAnalysis?
>
> Please, find attached my pass.
>
2018 Apr 14
0
Error: Verify if there is a pass dependency cycle
Hi,
You need to initialize your pass with:
INITIALIZE_PASS_BEGIN(YourPass, "your-pass", "Your Pass",
/*cfgonly=*/false, /*analysis=*/false)
INITIALIZE_PASS_DEPENDENCY(PostDominatorTreeWrapperPass)
INITIALIZE_PASS_END(YourPass, "your-pass", "Your Pass", /*cfgonly=*/false,
/*analysis=*/false)
So as to both register your pass, and have
2018 Apr 12
2
Error: Verify if there is a pass dependency cycle
Hi everyone,
I write a new FunctionPass which wants to use pass PostDominatorTree, so I
implement the next function:
void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<PostDominatorTree>();
AU.setPreservesAll();
}
Then I get PDT through the next statement:
PostDominatorTree *PDT = &getAnalysis<PostDominatorTree>();
My code can be successfully
2012 Oct 30
1
[LLVMdev] Error when trying to chain two llvm transform passes
On Oct 30, 2012, at 3:15 PM, Krzysztof Parzyszek <kparzysz at codeaurora.org> wrote:
> On 10/30/2012 4:10 PM, Ashwin kumar wrote:
>>
>> Assertion failed: (PI && "Expected required passes to be initialized"),
>> function schedulePass, file PassManager.cpp, line 597.
>>
>>
>> I register the passes using RegisterPass function call.
2019 Jan 31
4
Confusing ERROR with LoopAccessLegacyAnalysis: Pass 'Unnamed pass: implement Pass::getPassName()' is not initialized.
Dear all,
I write a new LoopPass which wants to use passes including LoopInfoWrapperPass, ScalarEvolutionWrapperPass and LoopAccessLegacyAnalysis.
Therefore, I implement the following code based on LLVM 9.0.0:
=====================================================================
bool LoopInformationCollect::runOnLoop(Loop *L, LPPassManager &)
{
auto &SE =
2017 Oct 03
2
About LLVM Pass dependency
Hello
I am working on pass which has dependency on multiple passes. Say
D1,D2,D3
I used
INITIALIZE_PASS_BEGIN
INITIALIZE_PASS_DEPENDENCY(D1)
INITIALIZE_PASS_DEPENDENCY(D2)
INITIALIZE_PASS_DEPENDENCY(D3)
INITIALIZE_PASS_END.
While running it through opt tool it, I had to specify this D1,D2,D3 pass
names
to get this pass executed before my pass.
Is there way, to let llvm pass manager to know
2015 May 20
3
[LLVMdev] Processing functions in call graph SCC "order" with function-level analyses
So I got very mixed results.
With the CallGraphSCCPass, both `addRequired<DominatorTreeWrapperPass>` and `addRequired<MemoryDependenceAnalysis>` fail at runtime. The LLVM core has just two CallGraphSCCPasses and neither uses neither analyses, so it's hard to find a valid example.
I transformed the pass into a ModulePass, using scc_iterator as shown in CGPassManager to process
2017 Oct 03
1
About LLVM Pass dependency
Hi Hongbin
I am not quite familiar with AnalysisUsage, let me correct question a bit.
I have read Writing Pass
<http://llvm.org/docs/WritingAnLLVMPass.html#specifying-interactions-between-passes>,
All examples that i see here are based on collecting information .i.e
Analysis Passes.
I wonder if this applies to Transformation passes also.
e.g.
void MyInliner::getAnalysisUsage(AnalysisUsage
2012 Oct 19
2
[LLVMdev] Choosing an alias analyzer
Hi,
In lib/Transforms/IPO/PassManagerBuilder.cpp: addInitialAliasAnalysisPasses,
I see this code
------
// Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
// BasicAliasAnalysis wins if they disagree. This is intended to help
// support "obvious" type-punning idioms.
PM.add(createTypeBasedAliasAnalysisPass());
PM.add(createBasicAliasAnalysisPass());
}
------
My
2017 Aug 01
1
Making an analysis availble during call lowering
> On Jul 31, 2017, at 21:47, Hal Finkel <hfinkel at anl.gov> wrote:
>
>
>
> Did you add INITIALIZE_PASS_DEPENDENCY somewhere?
>
> -Hal
Yes, the selector is ultimately a target defined, normal MachineFunction pass you can add dependencies on.
-Matt
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