search for: apints

On Jan 20, 2009, at 1:22 AM, Jay Foad wrote: >>> I realise that the DataTypes.h.in part might be controversial. Also, >>> there's probably a better place to put it, but I'm not sure where. >> >> I didn't apply this part. What problems does it cause to not have >> this? Can we fix uses of max and min? > > I could try to fix this by changing

>> I realise that the DataTypes.h.in part might be controversial. Also, >> there's probably a better place to put it, but I'm not sure where. > > I didn't apply this part. What problems does it cause to not have > this? Can we fix uses of max and min? I get these errors in lib: .../lib/Analysis/ValueTracking.cpp:162: error: no matching function for call to

I wrote the following bit of code static APInt FloorOfQuotient(APInt a, APInt b) { unsigned bits = a.getBitWidth(); APInt q(bits, 1), r(bits, 1); APInt::sdivrem(a, b, q, r); * errs() << "sdivrem(" << a << ", " << b << ") = (" << q << ", " << r << ")\n"; * if (r == 0) return q; else {

OK, the code for sdivrem in APInt.h is wrong. Here's what's written: static void sdivrem(const APInt &LHS, const APInt &RHS, APInt &Quotient, APInt &Remainder) { if (LHS.isNegative()) { if (RHS.isNegative()) APInt::udivrem(-LHS, -RHS, Quotient, Remainder); else APInt::udivrem(-LHS, RHS, Quotient, Remainder); Quotient =

Hi, I am new to LLVM & to this mailing list. I need help compiling llvm-gcc-frontend-4.2 on windows using cygwin I have gcc 4.2.2 (compiled from source) here is my configure - command line (hope this is correct) **** bash-3.2$ ../llvm-gcc/configure --prefix=/usr/local/llvm-gcc --program-prefix=llvm- --enable-llvm=/cygdrive/d/llvm-svn/llvm-objdir/ --enable-languages=c,c++

Hi, I want to compute the bitwise 'and' between two values of type int1:  %x = and %a, %b  . Which is the LLVM instruction that creates this? I only found the APInt class, whose constructor is:  APInt(unsigned numBits, uint64_t val, bool isSigned = false) and which provides the bitwise AND operation: APInt  llvm::APIntOps::And (const APInt &LHS, const APInt &RHS)   Bitwise

...skipLeadingZeroesAndAnyDot: String cannot be just a dot interpretDecimal: Multiple dots in float Invalid character in digit string trailingHexadecimalFraction: Invalid trailing hexadecimal fraction! I'd expect we'd want to keep the assertions that check to make sure we're comparing APInts and APFloats of the right semantics. I'm not sure if it makes sense trying to change this right before the code freeze, especially since I can't find any other classes that have similar semantics that we could copy. So, what should we do?

This adds a bunch of static functions that implement unsigned two's complement bignum arithmetic. They could be used to implement much of APInt, but the idea is they are enough to implement APFloat as well, which the current APInt interface is not suited for. Neil. -------------- next part -------------- Index: include/llvm/ADT/APInt.h

On Wed, Nov 30, 2011 at 10:42 PM, Chris Lattner <clattner at apple.com> wrote: > On Nov 29, 2011, at 12:26 AM, David Blaikie wrote: >> For a bit of an experiment I've been trying to compile LLVM & Clang >> with -Weverything (disabling any errors that seem like more noise/less >> interesting). One warning I've recently hit a few instances of is >>

Hi all, I'm experimenting with the Interpreter and all look good so far :) Unfortunately when I play with the visitBinartOperator() method I have the following assertion error: Support/APInt.cpp:233: llvm::APInt llvm::APInt::operator*(const llvm::APInt &) const: Assertion `BitWidth == RHS.BitWidth && "Bit widths must be the same"' failed. I have recompiled llvm and

...t;> the functionality that's already in LLVM. For example, consider just >> the problem of float to int conversions: >> >> char B[ (int)3.0 ]; >> >> Generating code for this is relatively simple; Converting >> arbitrary-sized APFloats to arbitrary-sized APInts isn't quite as >> easy. >> > > APFloat::convertToInteger does just this. Why can't you use it? > Well, I may be using it wrong. But looking at APFloat.h, I see four functions that purport to convert to integer: opStatus convertToInteger(integerPart *, un...

Sure. I will submit a patch. BTW, what's the difference between the bounds I was expecting APInt NewLower = getLower() - Other.getUpper() + 1; APInt NewUpper = getUpper() - Other.getLower(); and the two you mentioned NewLower = Lower - (Upper-1) NewUpper = (Upper-1) - Lower + 1 They look equivalent to me. Did I miss anything? Thanks. - xi On Jun 22, 2011, at 2:39 PM, Nick Lewycky

Hi, I have a question about ConstantRange::sub(const ConstantRange &Other) at lib/Support/ConstantRange.cpp:524. The code computes the new bounds as follows. APInt NewLower = getLower() - Other.getLower(); APInt NewUpper = getUpper() - Other.getUpper() + 1; Could someone explain this to me? I was expecting something like APInt NewLower = getLower() - Other.getUpper() + 1; APInt

On Dec 1, 2011, at 12:08 AM, David Blaikie wrote: > On Wed, Nov 30, 2011 at 10:42 PM, Chris Lattner <clattner at apple.com> wrote: >> On Nov 29, 2011, at 12:26 AM, David Blaikie wrote: >>> For a bit of an experiment I've been trying to compile LLVM & Clang >>> with -Weverything (disabling any errors that seem like more noise/less >>> interesting).

Talin wrote:- > Well, I may be using it wrong. But looking at APFloat.h, I see four > functions that purport to convert to integer: > > opStatus convertToInteger(integerPart *, unsigned int, bool, > roundingMode) const; > opStatus convertFromSignExtendedInteger(const integerPart *, > unsigned int, >

Hi, I have three constants (B, C and V) and V = B + C. I want to find out if B + C wraps around. The way I'll do it is, assuming B and C are both positive, to check if V < B or C. For this I need the values of B, C and V. I tried using APInt as below. *** If (isa<Constant> (B) && isa<Constant> (C) && isa<Constant>(V)) { ConstantInt *CV =

...a dot > > interpretDecimal: > Multiple dots in float > Invalid character in digit string > > trailingHexadecimalFraction: > Invalid trailing hexadecimal fraction! > > > I'd expect we'd want to keep the assertions that check to make sure > we're comparing APInts and APFloats of the right semantics. > > I'm not sure if it makes sense trying to change this right before the > code freeze, especially since I can't find any other classes that have > similar semantics that we could copy. So, what should we do? > ___________________________...

I'm trying to install llvm on my windows development box and hit a problem I'm using cygwin cygwin% gcc --version gcc (GCC) 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) I downloaded both the top of tree via svn I ran ./configure make make[1]: Entering directory `/cygdrive/c/llvm/lib/Support' llvm[1]: Compiling APFloat.cpp for Debug build llvm[1]: Compiling APInt.cpp

Hi folks, I'm hitting the below assertion failure when compiling this small piece of C code (repro.c, attached). My command line is: bin/clang --target=aarch64-linux-gnu -c -O2 repro.c clang is built from top of trunk as of this morning. It only happens at -O2, and it doesn't happen with the default target (x86_64). I tried to reproduce using just 'llc -O2' but didn't

Index: include/llvm/ADT/APInt.h =================================================================== --- include/llvm/ADT/APInt.h (revision 55101) +++ include/llvm/ADT/APInt.h (working copy) @@ -20,6 +20,7 @@ #include <cassert> #include <iosfwd> #include <string> +#include <cstring> namespace llvm { class Serializer; -------------- next part -------------- An