similar to: [LLVMdev] Passing specific register for an Instruction in target description files.

On Mon, Jun 30, 2014 at 02:40:43AM -0700, Quentin Colombet wrote: > Hi Arsen, > > > > On Jun 19, 2014, at 10:43 PM, Arsen Hakobyan <artinetstudio at gmail.com> wrote: > > > > Hi all, > > > > I want to generate an assembly instruction for my target using target > > description representation of the instruction. The problem is that I want to

Hi all, I have the following test case: #define FLT_EPSILON 1.19209290E-7 int err = -1; int main() { float a = 8.1; if (((a - 8.1) >= FLT_EPSILON) || ((a - 8.1) <= -FLT_EPSILON)) { //I am using FLT_EPSILON to check whether (a != 2.0). err = 1; } else { err = 0; } return 0; } with -O3 optimization level clang generates already incorrect LLVM IR: ; Function Attrs:

The sign information for binary operators is available in the llvm IR by the 'nsw' (no signed wrap) flag. Seems there is no use of this flag in the code generation phase. The sign information is no more available in the selection DAG. So how can I generate different instructions for binary operators with signed/unsigned operands in the assembler (e.g. mul/mulu)? -- View this message in

Hi Arsen, we are beyond what I understand about how metadata operates. Maybe Adrian or David knows. --paulr From: Arsen Hakobyan [mailto:hakobyan.ars at gmail.com] Sent: Friday, January 12, 2018 12:16 PM To: Robinson, Paul Cc: llvm-dev at lists.llvm.org; David Blaikie Subject: Re: [llvm-dev] StripDeadDebugInfo for static inline functions. Just one update: the function causing the segmentation

Thanks Paul, Hi Adrian and David I would really appreciate any comments, thoughts assumptions. If additional information is needed please let me know. Regards, Arsen On Sat, Jan 13, 2018 at 2:54 AM, Robinson, Paul <paul.robinson at sony.com> wrote: > Hi Arsen, we are beyond what I understand about how metadata operates. > Maybe Adrian or David knows. > > --paulr > >

Hi Paul, Thanks for your response. Let me actually post more details visualizing my case. Assuming that can help. so the IR before the opt tool is running is: ; Function Attrs: nounwind define i16 @main() #0 !dbg !13 { entry: %retval = alloca i16, align 1 ... } ; Function Attrs: inlinehint nounwind define internal void @delay(i16 %d) #4 !dbg !69 { entry: %d.addr = alloca i16,

+ Adrian + David Hi Arsen, This sounds like a bug to me. Have you tried reproducing it on trunk? For instance, I see that the relation between DICompileUnit and DISubprogram was changed in the meantime (https://reviews.llvm.org/D19034 <https://reviews.llvm.org/D19034>). If this no longer occurs on master you could bisect the compiler to find the commit(s) that fix this and consider

Just one update: the function causing the segmentation fault is the following: 359 void DwarfDebug::constructAbstractSubprogramScopeDIE(LexicalScope *Scope) { 360 assert(Scope && Scope->getScopeNode()); 361 assert(Scope->isAbstractScope()); 362 assert(!Scope->getInlinedAt()); 363 364 const MDNode *SP = Scope->getScopeNode(); 365 366

Hi all, I would like to be sure that Tablegen still does not support completely separate multiple instruction generation, and the only way is to write costume code (may be in TargetISelDAGToDAG class) to get the needed result. Dear Tom, do you found other solution (using Tablegen tool) for this? Thanks, Arsen -- View this message in context:

Dear Tom, What is the advantage to use the “pseudo instruction” approach VS “custom lowering/DAGtoDAGSelection” VS “ Library function”? Best Kevin On Aug 14, 2014, at 9:27 AM, Tom Stellard <tom at stellard.net> wrote: > On Thu, Aug 14, 2014 at 12:05:33AM -0700, Arsen Hakobyan wrote: >> Hi all, >> >> I would like to be sure that Tablegen still does not support

Hi all, I would like to understand the strip-dead-debug-info transformation. In my test case there is a static inline function with two local variables. It appears that the function is already inlined before strip-dead-debug-info starts its work. As a result the DICompileUnit is cleaned and its subprograms list has no reference to the DISubprogram for the inlined function, but as there is

I modified an example in the object.size help page to create a function I want to be able to run: "mysize" <- function() { z <- sapply(ls(), function(w) object.size(get(w))) as.matrix(rev(sort(z))[1:5]) } mysize() When I test the lines inside the function it works fine: > z <- sapply(ls(), function(w) object.size(get(w))) > as.matrix(rev(sort(z))[1:5])

Dear all. I have a problem with the following situation: I want to handle an intrinsic function in a specific way. The prototype of my function is: "/int my_intrinsic_name()/" So I want to generate a move instruction which should use two register type operands: "/mov R1, R2/" For this purpose I assume that the instruction definition in the TargetInstrInfo.td file

Widows XP R 2.3.1 I have been trying to make a data structure that will contain both the coefficients from a linear regression along with column and row titles AND the call, i.e. myreg<-lm(y~x+y+z) whatIwant<-cbind(c(summary(myreg)$call,"",""),summary(myreg)$coefficients) Neither the statement above, nor any one of twenty variations I have tried work. I would appreciate

I'm not as familiar with all the ins and outs of metadata as maybe I should be, but ultimately the inlined function should have a DWARF description contained within the description of the caller (which is why you're seeing the call to constructAbstractSubprogramScopeDIE). That suggests that the DISubprogram for the inlined function ought to remain, and its scope should be the

Hi everyone, inline asm code is like below: void test(unsigned short a) { asm("myinstr my16bitreg, %0"::"r"(a)); } I want it generate instruction "myinstr my16bitreg, r15" I execute llc test.bc -march = msp430 -o test.s then it reports "LLVM ERROR: Couldn't allocate input reg for constraint 'r' !" What's the reason?

When I encounter memory errors, I like to see the size of the objects in memory, so I modified one of the examples: z <- sapply(ls(), function(x) object.size(get(x))) as.matrix(rev(sort(z))[1:10]) This works fine if I run it as is, but if I try to place it inside a function, I get an error (see below). I tried using sort.list and unlist, but I couldn't get it to work. I

Hello > inline asm code is like below: > > void test(unsigned short a) { >    asm("myinstr          my16bitreg, %0"::"r"(a)); > } > I want it generate instruction "myinstr          my16bitreg, r15" > > I execute > llc test.bc -march = msp430 -o test.s > then it reports > "LLVM ERROR: Couldn't allocate input reg for constraint

Hello, I have a need to change the parameter type of llvm.lifetime.start/end intrinsic functions to get other defined type, but i do not want to replace the current definition of the intrinsic function with the new definition. Is there a way, to do such things for a specific target? If the only way to do this is to create a separate file for my target and write there a target specific

I want to write a simple backend-specific instrinsic that will just call an instruction. How should I do that? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180924/7faeeb3d/attachment.html>