search for: svals

Hi, I would like to eliminate all the load instructions and replace their uses with the stored values in the following program. The stores and loads are in the same basic block. Is there an optimization pass in LLVM 3.0 that can do this? define void @testFunc() { entry: %sVal = alloca %sTy %f1 = getelementptr %sTy* %sVal, i32 0, i32 0 store i32 789, i32* %f1 %f2 = getelementptr %sTy*

On Feb 11, 2013, at 12:02 PM, David Blaikie <dblaikie at gmail.com> wrote: > Beyond that, though, I've hit one hierarchy in the Static Analyzer > that does this as well: ProgramPoint. On IRC Jordan Rose mentioned > that there's another more pervasive use of this pattern in the Static > Analyzer, the SVal hierarchy. > > So, Ted, how objectionable would it be for me

Hi All, I was debugging a clang binary when i found this problem. The following code is complied with clang. typedef struct s { short s; } SVAL; void recurse (SVAL a, int depth) { a.s = --depth; if (depth == 0) return; else recurse(a,depth); } int main () { SVAL s; s.s = 5; recurse (s, 5); return 0; } When i try to access value of a.s in function recurse through gdb(i.e

On Wed, Dec 5, 2012 at 1:06 PM, David Blaikie <dblaikie at gmail.com> wrote: > On Thu, Nov 29, 2012 at 8:16 PM, Richard Smith <richard at metafoo.co.uk> wrote: >> On Thu, Nov 29, 2012 at 7:43 PM, Eli Friedman <eli.friedman at gmail.com> >> wrote: >>> >>> On Thu, Nov 29, 2012 at 3:49 PM, David Blaikie <dblaikie at gmail.com> wrote:

Hi David, I think it might not be exactly PR13303 which might be causing the corruption of struct when accessed through GDB. This seems to be an ABI problem in clang. The problem seems to be that when we have pass by value of struct (having indirect arguments) stack is not aligned properly. I tried realigning the stack for indirect arguments in(TargetInfo.cpp) - ABIArgInfo

On 10/03/2011 09:36 PM, Villmow, Micah wrote: > One of the projects I am working on with others is to make LLVM-IR endian agnostic. > > > > So, I am sending out this proposal for feedback to the LLVM community. I’ve attached > > pretty version of the proposal in PDF format and pasted a 80-column safe text version > > below. > > > > A second smaller

This seems to be another case of PR13303 - since GDB can't figure out where to break for this function based on the debug info (you'll notice when you "break recurse" that it's not breaking on a line or source file, just an address) it's breaking at the very start, before the prologue I'm about to commit a fix to this. On Tue, Dec 4, 2012 at 5:34 AM, Karthik Bhat

I was thinking of something along the lines of: // SCRIPT-POSIX: posix/aggregate-indirect-arg.s // SCRIPT-WIN: win/aggregate-indirect-arg.s class SVal { public: ~SVal() {} const void* Data; unsigned Kind; }; void bar(SVal &v) {} class A { public: void foo(SVal v) { bar(v); } }; int main() { SVal v; v.Data = 0; v.Kind = 2142; A a; a.foo(v); return 0; } Then, you could

On Thu, Dec 6, 2012 at 12:33 AM, Karthik Bhat <karthikthecool at gmail.com> wrote: > Hi David, > > I think it might not be exactly PR13303 which might be causing the > corruption of struct when accessed through GDB. > This seems to be an ABI problem in clang. > The problem seems to be that when we have pass by value of struct > (having indirect arguments) stack is not

Karthik, At what point within recurse() are you asking gdb to display the value of argument a? What I'm wondering about is if the debug information gdb is using to get at a might not be correct at the particular point you are checking a, particularly if that is before the prolog has completed execution. The way debug information for arguments pushed on the stack is represented in

Hi Kevin, To get some portion of a constant immediate you can use SDNodeXForms to transform constant SDNodes into other values. For a worked example, in the MIPS backend we use this for constant synthesis by materializing the value into a register: (From lib/Target/MipsInstrInfo.td): // Transformation Function - get the lower 16 bits. def LO16 : SDNodeXForm<imm, [{ return getImm(N,

Hi Relph, I'm trying to print the value of 'a' while executing a.s = --depth; I have used break line number instead of break function so that the initial prologue part gets executed. The problem seems to be happening when parameters are pushed into stack and we call a function recursively. For example in the code when we have a int s; inside the struct instead of short s; gdb is able

Hi all, This seems like a dumb question but while setting up a pattern in TD file, I got stuck on trying to get each half of an immediate as the half-sized type (ie. i64 imm -> pair of i32 imm's). Is there an existing way to do it? I've tried the 'EXTRACT_SUBREG' but that seems to error at the end of scheduling. Looking at Target.td, I'm not sure which opcode is meant

Hi *, at the moment the build of clang is broken on MSVC 9.0 (according to buildbot http://google1.osuosl.org:8011/console at least since 2010-02-06 01:02:15) due to some strange template name lookup problems.,,, 97>FlatStore.cpp 97>D:\public\zorg\buildbot\osuosl\slave\clang-i686-xp-msvc9\llvm\include\llvm/ADT/ImmutableIntervalMap.h(98) : error C3861: 'MarkImmutable': identifier

Hi all, I apply "optim" to the function "obj", which minimizes the goodness of fit statistic and obtains Pearson minimum chi-squared estimate for x[1], x[2] and x[3]. The vector "fr" contains the four observed frequencies. Since "fr[i]" appears in the denominator, I would like to substitute "0" in the sum if fr[i]=0. I tried an

That's true, but it still requires the person writing the test to be familiar with both formats. Also anything more trivial than dumping a single local variable will probably run into even more issues. For example, The expression parsers each have their own unique quirks, and it might not always be easy to translate. Besides all the format compatibility issues, there's the more general

FYI, looks like support for Racoon is ending. Does anyone have any experience with the version in ipsec-tools ? ---Mike >Racoon users, > >This is the announcement that the kame project will quit providing >a key management daemon, the racoon, and that "ipsec-tools" will become >the formal team to release the racoon. >The final release of the racoon in the

On Tuesday, July 31, 2012 7:19 PM, Andy Gibbs wrote: > I'm afraid it looks like commit r160899 has broken two test-cases > which are part of the "debuginfo-tests" repository. I believe I > have narrowed it down to the correct commit... Erm, but I didn't post the details (obviously too much in a rush to get home last night! My apologies!) So here it is: The tests that

Hi, I'm afraid it looks like commit r160899 has broken two test-cases which are part of the "debuginfo-tests" repository. I believe I have narrowed it down to the correct commit... Cheers Andy

Hi All- I would like to create a 3d topographic map using lat/lon and z(height). I have been scouring the R help pages and have not located the package I am looking for. Does anyone have a suggestion of package that will work for this? thanks- sherri