similar to: [LLVMdev] how to choose which alias analysis used in my pass?

Displaying 20 results from an estimated 10000 matches similar to: "[LLVMdev] how to choose which alias analysis used in my pass?"

2014 Oct 15
2
[LLVMdev] how to choose which alias analysis used in my pass?
----- Original Message ----- > From: "Jingyue Wu" <jingyue at google.com> > To: "songlh" <songlh at cs.wisc.edu>, llvmdev at cs.uiuc.edu > Sent: Wednesday, October 15, 2014 2:50:12 PM > Subject: Re: [LLVMdev] how to choose which alias analysis used in my pass? > > > Isn't -basicaa the default alias analysis already? No, -basicaa is added
2014 Apr 29
2
[LLVMdev] how to identify basic blocks added for switch instruction without default?
Hi, I just notice that front-end will add an extra block for switch instruction without default. How could I identify basic blocks added due to this reason? The added codes looks like: sw.default.i625: ; preds = %if.end512 tail call void @fancy_abort(i8* getelementptr inbounds ([38 x i8]* @.str, i64 0, i64 0), i32 3045, i8* getelementptr inbounds
2015 Feb 11
3
[LLVMdev] question about licm
----- Original Message ----- > From: "Ashutosh Nema" <Ashutosh.Nema at amd.com> > To: "songlh" <songlh at cs.wisc.edu>, llvmdev at cs.uiuc.edu > Sent: Wednesday, February 11, 2015 3:20:27 AM > Subject: Re: [LLVMdev] question about licm > > Hi, > > LICM can only hoist instructions which dominates all loop exit > blocks. > In this case
2015 Feb 11
2
[LLVMdev] question about licm
hi, I applied licm with basicaa on the following codes: int j = atoi(argc[1]); int lower[] = {10, 9, 8, 7, 6, 5, 4, 3, 2, 1}; int upper[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; for(i = lower[j]; a[i] < 100 && i < upper[j]; i ++); I notice that upper[j] is not hoisted out from the loop. Is this because j could be larger than 10? Thanks a lot! Best,
2011 Jan 26
2
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
> On 1/26/11 2:40 PM, songlh at cs.wisc.edu wrote: >> thanks! >> >> After I check the ll file, I find this: >> >> %1 = load %struct.nsAString** %aBuf_addr, align 4, !dbg !2048 >> %2 = getelementptr inbounds %struct.nsAString* %1, i32 0, i32 0, !dbg >> !2048 >> %3 = getelementptr inbounds %struct.nsISupports* %2, i32 0, i32 0, !dbg >> !2048
2011 Jan 26
0
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
On 1/26/11 3:00 PM, songlh at cs.wisc.edu wrote: >> On 1/26/11 2:40 PM, songlh at cs.wisc.edu wrote: >>> thanks! >>> >>> After I check the ll file, I find this: >>> >>> %1 = load %struct.nsAString** %aBuf_addr, align 4, !dbg !2048 >>> %2 = getelementptr inbounds %struct.nsAString* %1, i32 0, i32 0, !dbg >>> !2048 >>> %3
2011 Jan 26
2
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
> On 1/26/11 3:00 PM, songlh at cs.wisc.edu wrote: >>> On 1/26/11 2:40 PM, songlh at cs.wisc.edu wrote: >>>> thanks! >>>> >>>> After I check the ll file, I find this: >>>> >>>> %1 = load %struct.nsAString** %aBuf_addr, align 4, !dbg !2048 >>>> %2 = getelementptr inbounds %struct.nsAString* %1, i32 0, i32 0, !dbg
2011 Jan 17
5
[LLVMdev] How to get the name and argument of a function
Hi everyone: The code I am analyzing is : int main() { int i = 0; printf("hello world!"); printf( "%d" , i ); } I want to get each place where printf is called, and the argument used during that call. so I write llvm pass code like: void Myfunction( Function & F){ for( Function::iterator b = F.begin() , be = F.end() ;
2011 Jan 26
1
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
> On 1/26/11 3:06 PM, songlh at cs.wisc.edu wrote: >>> [snip] >>> -- John T. >> Sorry, I am asking the second question. >> " >> how to determine, within an LLVM pass, what the >> possible target(s) of an indirect function call might be? > > There are at least two solutions. > > The first is to use the CallGraph analysis pass. It
2011 Jan 19
0
[LLVMdev] How to get the name and argument of a function
Thanks a lot! I finally fix my problem. My code is like this: //CallInst* pCall pCall is a printf called in my situation if( ConstantExpr * pCE = dyn_cast<ConstantExpr>( pCall->getArgOperand(0))){ if( GlobalVariable * pGV = dyn_cast<GlobalVariable>( pCE->getOperand(0))){ if( ConstantArray * pCA = dyn_cast<ConstantArray>(
2011 Jan 26
2
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
thanks! After I check the ll file, I find this: %1 = load %struct.nsAString** %aBuf_addr, align 4, !dbg !2048 %2 = getelementptr inbounds %struct.nsAString* %1, i32 0, i32 0, !dbg !2048 %3 = getelementptr inbounds %struct.nsISupports* %2, i32 0, i32 0, !dbg !2048 %4 = load i32 (...)*** %3, align 4, !dbg !2048 %5 = getelementptr inbounds i32 (...)** %4, i32 10, !dbg !2048 %6 = load i32 (...)**
2013 Jan 31
2
[LLVMdev] Could I explicitly tell clang not inline some functions?
Hi, I am wondering whether there are some ways I can tell clang not inline some or all functions. Thanks a lot! Linhai
2011 Jan 26
0
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
On 1/26/11 2:40 PM, songlh at cs.wisc.edu wrote: > thanks! > > After I check the ll file, I find this: > > %1 = load %struct.nsAString** %aBuf_addr, align 4, !dbg !2048 > %2 = getelementptr inbounds %struct.nsAString* %1, i32 0, i32 0, !dbg !2048 > %3 = getelementptr inbounds %struct.nsISupports* %2, i32 0, i32 0, !dbg !2048 > %4 = load i32 (...)*** %3, align 4, !dbg !2048
2011 Jan 26
2
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
Hi: My llvm code is: for( BasicBlock::iterator i = b->begin() , ie = b->end(); b != be ; b ++ ){ if( CallInst * pCall = dyn_cast<CallInst>(i)){ pCall->dump(); // Function * pFunction = pCall->getCalledFunction(); if( !pFunction ){ } std::string fname = pFunction->getName(); } } The dump result
2011 Jan 26
0
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
On 1/26/11 3:06 PM, songlh at cs.wisc.edu wrote: >> [snip] >> -- John T. > Sorry, I am asking the second question. > " > how to determine, within an LLVM pass, what the > possible target(s) of an indirect function call might be? There are at least two solutions. The first is to use the CallGraph analysis pass. It constructs a conservative call graph, meaning that
2013 Jan 17
3
[LLVMdev] the latest version of llvm-gcc is 4.2?
Hi, I am wondering whether the latest llvm-gcc version is 4.2. This is the latest version I can find on llvm web site. Thanks a lot! Best, Linhai
2011 Jan 18
0
[LLVMdev] How to get the name and argument of a function
songlh at cs.wisc.edu wrote: > Hi everyone: > > The code I am analyzing is : > > int main() > { > int i = 0; > printf("hello world!"); > printf( "%d" , i ); > } > > > > I want to get each place where printf is called, and the argument used > during that call. > > so I write llvm
2011 Jan 26
0
[LLVMdev] [LLVMDEV]How could I get function name in this situation?
On 1/26/11 2:07 PM, songlh at cs.wisc.edu wrote: > Hi: > > My llvm code is: > > for( BasicBlock::iterator i = b->begin() , ie = b->end(); > b != be ; b ++ ){ > if( CallInst * pCall = dyn_cast<CallInst>(i)){ > > pCall->dump(); // > Function * pFunction = pCall->getCalledFunction(); > if(
2014 Sep 29
2
[LLVMdev] questions about getAnalysisUsage
Hi, I notice that there are several different methods called inside getAnalysisUsage(). The parameters of addRequiredID and addPreservedID are passID. What is the difference between Required and Preserved? There are also function named addRequired<PassName>() called. What is the difference between addRequired<PassName>() and addRequiredID(PassID)? Thanks a lot! Best,
2015 Feb 16
2
[LLVMdev] alias result
Hi all, I am implementing a pass which needs aliasanalysis in llvm. My pass firstly records all store or load instructions as follows: loc[cnt++] = AA.getLocation(si/li); Then, get each pairwise alias result. AliasAnalysis::AliasResult ar = AA.alias(loc[i], loc[j]); switch(ar){ case 0,1,2,3;} And the command is: opt -load mypass.so -mypass -basicaa test.bc The store/load in test.bc: (1):