Displaying 20 results from an estimated 65 matches for "getbasicblock".
2017 Jun 28
2
About the concept of "materialization"
.../ dummy basic block for now, and replace it once we've materialized all
// the initializers.
BasicBlock *BB;
if (F->empty()) {
DelayedBBs.push_back(DelayedBasicBlock(BA));
BB = DelayedBBs.back().TempBB.get();
} else {
BB = cast_or_null<BasicBlock>(mapValue(BA.getBasicBlock()));
}
return getVM()[&BA] = BlockAddress::get(F, BB ? BB : BA.getBasicBlock());
}
Thanks,
Pei
On 6/28/17, 10:59 AM, "陳韋任" <chenwj.cs97g at g2.nctu.edu.tw> wrote:
2017-06-29 1:55 GMT+08:00 Pei Wang via llvm-dev <llvm-dev at lists.llvm.org>:
> Bruce,...
2010 Oct 15
2
[LLVMdev] how to get MachineBasicBlock of a BasicBlock
Hello, we can get BasicBlock from MachineBasicBlock through MachineBasicBlock::getBasicBlock() function, but how can I get MachineBasicBlock of a BasicBlock?
Thank you!
2015 Aug 01
3
[LLVMdev] SelectionDAG viewers, filter-view-dags question
...(void)BlockNumber;
bool MatchFilterBB = false; (void)MatchFilterBB;
#ifndef NDEBUG
- MatchFilterBB = (!FilterDAGBasicBlockName.empty() &&
+ MatchFilterBB = (FilterDAGBasicBlockName.empty() ||
FilterDAGBasicBlockName ==
FuncInfo->MBB->getBasicBlock()->getName().str());
#endif
—
Mehdi
> On Aug 1, 2015, at 11:07 AM, Ryan Taylor <ryta1203 at gmail.com> wrote:
>
> Simply replacing the && with || did not fix the issue. This issue still exists after making those changes. There is maybe some other code that needs to...
2010 Oct 15
1
[LLVMdev] how to get MachineBasicBlock of a BasicBlock
...nnot work. I do not see much in the basic block which can identify
> it.
>
> So you can search for it.
>
> typedef struct findBlock {
> BasicBlock * block;
> findBlock( BasicBlock * block ) : block(block) {}
> bool operator( MachineBasicBlock * mbb ) { return
> mbb->getBasicBlock() == block; }
> } findBlock;
> MachineBasicBlock = *std::find( machineFunction.begin(),
> machineFunction.end(),
> findBlock( basicBlock ) );
>
> -Thanks
> -Jeff Kunkel
>
> 2010/10/15 徐敏 <xm1988 at mail.ustc.edu.cn>:
> > Hello, we can get BasicBlock from Mach...
2015 Jul 27
2
[LLVMdev] SelectionDAG viewers, filter-view-dags question
...ke the fix wasn't merged. I don't have the revision number for the fix to hand but in lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp, this:
MatchFilterBB = (!FilterDAGBasicBlockName.empty() &&
FilterDAGBasicBlockName ==
FuncInfo->MBB->getBasicBlock()->getName().str());
Should be:
MatchFilterBB = (FilterDAGBasicBlockName.empty() ||
FilterDAGBasicBlockName ==
FuncInfo->MBB->getBasicBlock()->getName().str());
The trunk has the correct code so the option should be ok for LLVM 3.7.
From: Ry...
2009 Sep 10
1
[LLVMdev] Loading ProfileInfo in Backend. (Was: [PATCH] & Question: Preserving ProfileInfo for backend.)
...9;m still seeing execution counts of -1 when I print
> them out in my MachineFunction pass. I access the profiling
> information at each MachineBasicBlock with the following code, where
> "bb" is a reference to the current MachineBasicBlock:
>
> PI->getExecutionCount(bb.getBasicBlock())
What does "llc -debug-pass=Structure" say? Is the ProfileLoaderPass
really the last pass to touch the ProfileInfo before you are using it?
Also, does bb.getBasicBlock() for sure always returns a valid block
refrerence?
You are getting the PI by getAnalysis<ProfileInfo>() I pre...
2009 Sep 09
2
[LLVMdev] [PATCH] & Question: Preserving ProfileInfo for backend.
...way.
Unfortunately, I'm still seeing execution counts of -1 when I print
them out in my MachineFunction pass. I access the profiling
information at each MachineBasicBlock with the following code, where
"bb" is a reference to the current MachineBasicBlock:
PI->getExecutionCount(bb.getBasicBlock())
I believe I've integrated all the ProfileInfo* files from ToT with my
LLVM-2.5 installation properly. The profiling code (and llvm-prof)
seems to be working since llvm-prof is generating/printing the
appropriate execution frequencies. Is there an obvious mistake that I
could be making? S...
2010 Oct 15
0
[LLVMdev] how to get MachineBasicBlock of a BasicBlock
...Block( BasicBlock::{get the number} )
cannot work. I do not see much in the basic block which can identify
it.
So you can search for it.
typedef struct findBlock {
BasicBlock * block;
findBlock( BasicBlock * block ) : block(block) {}
bool operator( MachineBasicBlock * mbb ) { return
mbb->getBasicBlock() == block; }
} findBlock;
MachineBasicBlock = *std::find( machineFunction.begin(), machineFunction.end(),
findBlock( basicBlock ) );
-Thanks
-Jeff Kunkel
2010/10/15 徐敏 <xm1988 at mail.ustc.edu.cn>:
> Hello, we can get BasicBlock from MachineBasicBlock through MachineBasicBlock::getBas...
2015 Jul 27
1
[LLVMdev] SelectionDAG viewers, filter-view-dags question
...'t have the revision number for the fix to hand but in
> lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp, this:
>
> MatchFilterBB = (!FilterDAGBasicBlockName.empty() &&
>
> FilterDAGBasicBlockName ==
>
> FuncInfo->MBB->getBasicBlock()->getName().str());
>
> Should be:
>
> MatchFilterBB = (FilterDAGBasicBlockName.empty() ||
>
> FilterDAGBasicBlockName ==
>
> FuncInfo->MBB->getBasicBlock()->getName().str());
>
>
>
> The trunk has the corr...
2015 Aug 11
2
Fwd: [LLVMdev] SelectionDAG viewers, filter-view-dags question
...(void)BlockNumber;
bool MatchFilterBB = false; (void)MatchFilterBB;
#ifndef NDEBUG
- MatchFilterBB = (!FilterDAGBasicBlockName.empty() &&
+ MatchFilterBB = (FilterDAGBasicBlockName.empty() ||
FilterDAGBasicBlockName ==
FuncInfo->MBB->getBasicBlock()->getName().str());
#endif
—
Mehdi
On Aug 1, 2015, at 11:07 AM, Ryan Taylor <ryta1203 at gmail.com<mailto:ryta1203 at gmail.com>> wrote:
Simply replacing the && with || did not fix the issue. This issue still exists after making those changes. There is maybe some othe...
2009 Sep 10
0
[LLVMdev] Loading ProfileInfo in Backend. (Was: [PATCH] & Question: Preserving ProfileInfo for backend.)
...ion Instructions
Remove unreachable blocks from the CFG
Optimize for code generation
Insert stack protectors
X86 DAG->DAG Instruction Selection
X86 FP_REG_KILL inserter
X86 Maximal Stack Alignment Calculator
<MY PASS RUNS HERE>
> Also, does bb.getBasicBlock() for sure always returns a valid block
> refrerence?
Yes. I am printing bb and *bb.getBasicBlock() in order to compare the
contents of the IR in the BasicBlock and the target assembly in the
MachineBasicBlock.
> You are getting the PI by getAnalysis<ProfileInfo>() I presume? Is this...
2006 Jul 05
0
[LLVMdev] Critical edges
...dst_has_many_pred = true;
break;
}
}
return src_has_many_succ && dst_has_many_pred;
}
void CriticalEdgeRemoval_Fer::split_critical_edge
(MachineBasicBlock & src, MachineBasicBlock & dst, MachineFunction & mf) {
const BasicBlock * src_bb = src.getBasicBlock();
const BasicBlock * dst_bb = dst.getBasicBlock();
MachineBasicBlock * crit_mbb = new MachineBasicBlock(src_bb);
src.addSuccessor(crit_mbb);
crit_mbb->addSuccessor(& dst);
src.removeSuccessor(& dst);
ilist<MachineBasicBlock>::iterator mbb_it = mf.getLast...
2020 Mar 13
2
How to simply split MachineBasicBlock ?
...nchRelaxation::splitBlockBeforeInstr.)
This is my code :
// I would pass call instruction to this function
void split_mbb(MachineInstr* mi){
MachineBasicBlock* mbb=mi->getParent();
MachineFunction* mf=mbb->getParent();
MachineBasicBlock*
new_mbb=mf->CreateMachineBasicBlock(mbb->getBasicBlock());
MachineFunction::iterator mbb_it(mbb);
mf->insert(mbb_it,new_mbb);
new_mbb->splice(new_mbb->end(),mbb,mbb->begin(),mi);
}
Originally, mi is in BB.
(mi would be a call instruction)
(do not consider mi is a branch instruction)
BB --> BB1 , BB2
Then, I split BB, mi is the fi...
2012 Sep 26
0
[LLVMdev] [PATCH / PROPOSAL] bitcode encoding that is ~15% smaller for large bitcode files...
...UseRelativeIDs = false;
> + }
Likewise.
>
> InstructionList.clear();
> unsigned ModuleValueListSize = ValueList.size();
...
> @@ -2260,8 +2275,10 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
> }
> else {
> BasicBlock *FalseDest = getBasicBlock(Record[1]);
> - Value *Cond = getFnValueByID(Record[2], Type::getInt1Ty(Context));
> - if (FalseDest == 0 || Cond == 0)
> + Value *Cond;
> + if (getValueConst(Record, 2,
> + NextValueNo, Type::getInt1Ty(Context), Cond) ||
> +...
2009 Sep 10
2
[LLVMdev] Loading ProfileInfo in Backend. (Was: [PATCH] & Question: Preserving ProfileInfo for backend.)
...ocks from the CFG
> Optimize for code generation
> Insert stack protectors
> X86 DAG->DAG Instruction Selection
> X86 FP_REG_KILL inserter
> X86 Maximal Stack Alignment Calculator
> <MY PASS RUNS HERE>
>
>
>> Also, does bb.getBasicBlock() for sure always returns a valid block
>> refrerence?
>
> Yes. I am printing bb and *bb.getBasicBlock() in order to compare the
> contents of the IR in the BasicBlock and the target assembly in the
> MachineBasicBlock.
>
>> You are getting the PI by getAnalysis<Prof...
2006 Jul 04
2
[LLVMdev] Critical edges
On Tue, 4 Jul 2006, Fernando Magno Quintao Pereira wrote:
> However, it does not remove all the critical edges. I am getting a very
> weird dataflow graph (even without the Break Critical edges pass). The
> dataflow generated by MachineFunction::dump() for the program below is
> given here:
> http://compilers.cs.ucla.edu/fernando/projects/soc/images/loop_no_crit2.pdf
...
> The
2017 Jul 25
2
[Debug] Elide the unconditional branch instructions
...ebug information, we don't eliminate the unconditional branch instruction, otherwise we eliminate it.
/// (fall-through) successor, and update the CFG.
void FastISel::fastEmitBranch(MachineBasicBlock *MSucc,
const DebugLoc &DbgLoc) {
- if (FuncInfo.MBB->getBasicBlock()->size() > 1 &&
- FuncInfo.MBB->isLayoutSuccessor(MSucc)) {
- // For more accurate line information if this is the only instruction
- // in the block then emit it, otherwise we have the unconditional
+ if (FuncInfo.MBB->isLayoutSuccessor(MSucc) && !DbgLoc) {...
2011 Jul 01
2
[LLVMdev] LLVM Instr from MachineInstr
Hi,
Is there any way to get a pointer to the LLVM Instr from which a
particular MachineInstr is generated ?
Although I understand it goes through many optimization after a LLVM
instruction is converted to SDAG node, so maintaining such a mapping
will be hard. Still is the mapping stored some where which can give
some sane results at least in case of -O0?
Thanks and regards,
Ankur
2011 Jul 01
0
[LLVMdev] LLVM Instr from MachineInstr
Hi Ankur,
For a MachineBasicBlock you can call getBasicBlock() to find the IR level BasicBlock from which it was generated (if there isn't a one, it will return NULL). I don't know of a way to get a finer granularity than that, though.
-Jim
On Jul 1, 2011, at 1:06 AM, ankur deshwal wrote:
> Hi,
>
> Is there any way to get a pointer to th...
2006 Oct 03
0
[LLVMdev] Out of range address
On Tue, 3 Oct 2006, Fernando Magno Quintao Pereira wrote:
> I am having some problems when compiling huge programs (like gcc).
> I have a machine pass to destroy critical edges, and I have to add
> new basic blocks, but sometimes the program is too big, and the new
> basic block gets out of addressing range. What is the proper way to
> address this problem? I am producing code