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Hi all, I'm looking for some guidance on how to implement the following GCC behavior using the Clang libaries. For a simple input file I want to get all the macro's which are actually being tested against in that specific file. The following reproduces the behavior: $ cat > test.c << EOF #ifdef AA #define BLABLA #else #define WUTWUT #endif #ifdef WUTWUT #endif #define X 2

Chris do you have a sense for how the definedness of signed overflow in LLVM would play out in the context of bounds check elimination? That is, would it cause lots of failure to eliminate checks that could be seen to be unnecessary at the C level? John On Sun, 15 Feb 2009, Chris Lattner wrote: > > On Feb 15, 2009, at 10:08 PM, John Regehr wrote: > >>> Predsimplify is

Hi, I am trying to understand the limitations of the current vectorizer, and came upon these test cases that fail to get vectorized. 1. loop1 below (note the increment by 2) fails to get vectorized because the access a[j+1] is considered to wrap around (the corresponding SCEV doesn't have nsw/nuw set) and hence isStridedPtr() in LoopAccessAnalysis.cpp return false. #define SIZE 100000 void

Hello List, i''m running into an issue with puppet where I don''t know how to solve correctly. We''re managing applications and our monitoring (nagios) using puppet using the following schema: class nagios { // ensure nrpe ist installed // export a host definition nagios::check { ''ping'': } nagios::check { ''load'': } ...

Hi, are there anyone have used l_date to format a date object. I have used it as: <%= l_date porject.created_at %> And defineded the "general_fmt_date" in "lang\en.yml" as: general_fmt_date: %%m/%%d/%%Y When run it, the output is: %m/%d/%Y Maybe I had made some mistakes, who can hely me? -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this m...

I was looking through the InstCombine pass, and I was wondering why signed division is not considered a valid operation to combine in the canEvaluateTruncated function. This means, given the following code: %conv = sext i16 %0 to i32 %conv1 = sext i16 %1 to i32 %div = sdiv i32 %conv, %conv1 %conv2 = trunc i32 %div to i16 * Assume %0 and %1 are registers created from simple 16-bit loads. We

On Feb 15, 2009, at 10:08 PM, John Regehr wrote: >> Predsimplify is believed to have bugs (it results in miscompiled >> programs) and certainly isn't efficient (it was written before much >> of >> include/ADT). Finally, predsimplify is likely to go away once I or >> someone else writes a proper VRP pass. > > Whoever does this, I strongly encourage looking

> Predsimplify is believed to have bugs (it results in miscompiled > programs) and certainly isn't efficient (it was written before much of > include/ADT). Finally, predsimplify is likely to go away once I or > someone else writes a proper VRP pass. Whoever does this, I strongly encourage looking into using (or at least providing optional support for) the Apron library:

On 2018-08-22 05:56, John McCall via llvm-dev wrote: >> On Aug 21, 2018, at 6:20 PM, Leonard Chan <leonardchan at google.com> wrote: >> If we were to create a new type down the line, I think the main >> features that would distinguish them from other types are the >> arbitrary width and scale. Saturation can be handled through >> instructions since saturation

What should a well behaved back end do with a load or store with alignment less than the natural alignment of the type? I believe C++ considers such access to be UB. I'm not sure what the IR semantics are. I think my options are: - Delete the operation / use undef - Lower as if it is naturally aligned - Lower via inefficient code that assumes align 1 Thanks, Jon -------------- next part

If we were to create a new type down the line, I think the main features that would distinguish them from other types are the arbitrary width and scale. Saturation can be handled through instructions since saturation really only takes effect after an operation and doesn’t really describe anything about the bits in the resulting type. Signage can similarly be managed through operations and would be

On 2018-08-22 11:32, John McCall wrote: > >> On Aug 22, 2018, at 4:38 AM, Bevin Hansson <bevin.hansson at ericsson.com> wrote: >> >> >> >> On 2018-08-22 05:56, John McCall via llvm-dev wrote: >>>> On Aug 21, 2018, at 6:20 PM, Leonard Chan <leonardchan at google.com> wrote: >>>> If we were to create a new type down the line, I