similar to: [LLVMdev] Loop Unfolding in LLVM

David, As you suggested, I try to compile the following test code: *include "llvm/IR/Instruction.h"#include "stdint.h"extern void callback(intptr_t);void foo(){ llvm::Instruction* i; intptr_t zzzz=static_cast<intptr_t>(i); callback(zzzz);}* but got this compilation error: * 'intptr_t' (aka 'long') is not allowed intptr_t

Hi, I wonder whether we can easily retrieve an LLVM instruction ID that uniquely identifies the instruction. In my case, I need to avoid using llvm::Instruction* directly. Given an 'inst' of type llvm::instruction*, is there some readily usable method as simple as "int id = inst->id( )"? Thanks. Zhoulai -------------- next part -------------- An HTML attachment was

Hi, Are there some built-in LLVM transformation pass, or written library code that transforms LLVM::SwitchInst into if-condition statements (LLVM:: BranchInst)? The purpose of the transformation is that we have a legacy program analyzer that includes an LLVM pass manipulating if-condition statements. Statements of LLVM::SwithchInst should have been handled in the same manner but was not done.

Hi, I have a naive question on how to generate LLVM IR for inline functions. I have compiled this C code: *inline void func1()* * {* * int x=3;* * }* * void func2()* * {* * func1();* * int y = 4;* * }* into LLVM IR, using clang -emit-llvm -S -c <filename> But the generated LLVM IR file does *not* have func1() expanded (see below for the relevant parts). *; Function Attrs: nounwind

Thank you, kcc. I am unsure if I misunderstand your reply. It seems that trace-bb, rather than trace-pc, fits better for my problem, given that my instrumentation is to put before each conditional statement. Do I misunderstand something here? " Tracing basic blocks <http://clang.llvm.org/docs/SanitizerCoverage.html#id11> With -fsanitize-coverage=trace-bb the compiler will insert

Hi all, i hope to get the MemoryLocation for argument %1 in a CallInst like "call void @function(i32* %1)", and i found an interface "getForArgument()" which seems available for this. However, i don't know how to correcly fill the 3rd argument TargetLibraryInfo in my own code and can't find an example in google. Does anybody know how to do it? Or some other advice for

Hi, I am using LLVM to develop a tool, using Mac OS 10.9. I have download llvm source and binary from http://llvm.org/releases/download.html I just find the BasicBlock.h file of the binary package clang+llvm-3.6.0-x86_64-apple-darwin/include/llvm/IR/BasicBlock.h is slightly different from that of the source llvm/include/llvm/IR/BasicBlock.h In particular, llvm:: getModule(..)

Hi all, I have a question regarding a transformation that is carried out in InstCombine, which has been introduced by r48715. It unfolds expressions of the form `zext(or(icmp, (icmp)))` to `or(zext(icmp), zext(icmp)))` to expose pairs of `zext(icmp)`. In a subsequent iteration these `zext(icmp)` pairs could then (possibly) be optimized by another optimization (which has already been there before

I'm trying to put together an R routine to conduct unidimensional unfolding scaling analysis using maximum likelihood. My problem is that ML optimization will get stuck at latent scale points that are far from optimal. The point optimizes on one of the observed variables but not others and for ML to move away from this 'local optimum', it has to move in a direction in which the

Hi Sanjay, thank you a lot for your answer. I understand that in your examples it is desirable that `foo` and `goo` are canonicalized to the same IR, i.e., something like `@goo`. However, I still have a few open questions, but please correct me in case I'm thinking in the wrong direction. > Am 21.07.2016 um 18:51 schrieb Sanjay Patel <spatel at rotateright.com>: > > I've

Alternatively, just type debug(optim) before using it, then step through it by hitting enter repeatedly... When you're done, do undebug(optim). Andy > From: Spencer Graves > > Have you looked at the code for "optim"? If you > execute "optim", it > will list the code. You can copy that into a script file and walk > through it line by line to

The source is cloned from https://github.com/llvm-mirror/llvm Thanks. Zhoulai On Thu, Apr 9, 2015 at 9:15 AM, Jonathan Roelofs <jonathan at codesourcery.com> wrote: > > > On 4/9/15 9:58 AM, Zhoulai wrote: > >> Hi, I am using LLVM to develop a tool, using Mac OS 10.9. I have >> download llvm source and binary from >> >>

Hi, all I want to instrument a program automatically so that it prints "hello" before each conditional statement. For example, consider the function P below. int P(int x) { if (x<3) if (x>0) return 1; return 0; } Let P_instrum be the instrumented version of P. It is expected that: -- P_instrum(1) prints two "hello"s --

Here's the code and compilation steps: #include <stdint.h> typedef unsigned int uint128_t __attribute__((mode(TI))); typedef struct{ uint64_t l[5]; } s; void f(s * restrict r, const s * restrict x, const s * restrict y) { uint128_t t[5] = {0, 0, 0, 0, 0}; #define BODY(i,j) { int i_ = i < j ? i : j; int j_ = i < j ? j : i; uint128_t m = (uint128_t) x->l[i_] *

Hi I have a 3 level nested while-endwhile loop in a macro that when the execution reaches endwhile, it is jumping out to the While at the caller macro. It shouldn't since the are instructions after the endwhile. -- Executing [s at macro-call-from-outside:72] EndWhile("DAHDI/i1/1234567-4a7f", "") in new stack == Channel 'DAHDI/i1/1234567-4a7f' jumping out of

Thanks Dan and Jon. I made an incorrect assumption that the "use" iterator was actually giving me the "user" when de-referencing it. Did it always have this behavior in previous LLVM versions? I've seen lots of examples of the "use" iterator being dereferenced and resulting Instruction pointer being treated as the "user"? Thanks, Zack On Tue, Jun 9,

I seem to be having a conceptual problem with the "While" and "EndWhile" applications. It seems that on the first cycle, even if the result of the "While" is false that the enclosed applications will get run. Is this expected? It seems to be counter-intuitive, but I don't know what the intent of the While routines is. I could of course put a

I hope this isn't a FAQ. Per the man page I see ways to control the blocksize for hash comparison reasons, but no way to control it for i/o performance reasons. I'm using rsync to copy folder trees full of large files and I'd like to have control of how much data is read / written at a time. Maybe read 10 MB, write 10 MB, etc. Is there an existing way to do that? == details ==

Hi Zhoulai, I am trying to modify "LoopUnrollPass" in llvm which produces multiple copies of loop equal to the loop unroll factor.Currently, using multicore architecture, say 3 for example and the execution goes like: for 3 cores if there are 9 iterations of loop core instruction 1 0,3,6 2 1,4,7 3 2,5,8 But I want to to

Hi Sanjay, > Am 02.08.2016 um 21:39 schrieb Sanjay Patel <spatel at rotateright.com>: > > Hi Matthias - > > Sorry for the delayed reply. I think you're on the right path with D22864. No problem, thank you for your answer! > If I'm understanding it correctly, my foo() example and zext_or_icmp_icmp() will be equivalent after your patch is added to InstCombine.