search for: icmp_ug

...0 True if unordered or not equal + FCMP_TRUE = 15, ///< 1 1 1 1 Always true (always folded) FIRST_FCMP_PREDICATE = FCMP_FALSE, LAST_FCMP_PREDICATE = FCMP_TRUE, BAD_FCMP_PREDICATE = FCMP_TRUE + 1, - ICMP_EQ = 32, /// equal - ICMP_NE = 33, /// not equal - ICMP_UGT = 34, /// unsigned greater than - ICMP_UGE = 35, /// unsigned greater or equal - ICMP_ULT = 36, /// unsigned less than - ICMP_ULE = 37, /// unsigned less or equal - ICMP_SGT = 38, /// signed greater than - ICMP_SGE = 39, /// signed greater or equal - ICMP_SLT...

...ast<ConstantInt>(LHS)) || (Con = dyn_cast<ConstantInt>(RHS)))) + return nullptr; + uint64_t con_val = Con->getZExtValue(); + + if (RHS == CI) + IC->swapOperands(); + + switch (IC->getPredicate()) { + case ICmpInst::ICMP_EQ: + case ICmpInst::ICMP_NE: + case ICmpInst::ICMP_UGT: + case ICmpInst::ICMP_UGE: + case ICmpInst::ICMP_ULE: + case ICmpInst::ICMP_SGT: + case ICmpInst::ICMP_SGE: + case ICmpInst::ICMP_SLE: + // XXX: check for wrapping + if (con_val == UINT64_MAX) + return nullptr; + return emitStrNLen(Src, ConstantInt::get(SizeType, con_val + 1),...

Hello all, I was looking for an analysis pass that could provide comprehensive information on pointer arithmetic in the context of whole-program optimization. It seems that Scalar Evolution provides exactly what I'm looking for, but it is restricted to only intraprocedural analysis. E.g., consider this toy snippet: void foo(int* p) { (*p)++; } int bar() { int i; for (i = 0; i < n;

On Wed, Dec 12, 2012 at 1:26 PM, Joerg Sonnenberger <joerg at britannica.bec.de> wrote: > On Wed, Dec 12, 2012 at 11:01:01AM -0800, Dan Gohman wrote: >> > Is that >> > assumption violated if I explicitly cast away const and pass the result >> > to a function with NoAlias argument? >> >> Not immediately, no. It means that you can't access the

On Wed, Dec 12, 2012 at 11:01:01AM -0800, Dan Gohman wrote: > > Is that > > assumption violated if I explicitly cast away const and pass the result > > to a function with NoAlias argument? > > Not immediately, no. It means that you can't access the constant > pointer's pointee directly within the noalias argument's scope. Access > to that object must go

...} - - // Assume that the constant null is on the right. - if (llvm::isKnownNonNull(LHSPtr) && isa<ConstantPointerNull>(RHSPtr)) { - if (Pred == CmpInst::ICMP_EQ) + if (LHSPtr == RHSPtr) { + switch (Predicate) { + case ICmpInst::ICMP_EQ: + case ICmpInst::ICMP_UGE: + case ICmpInst::ICMP_SLE: + return ConstantInt::get(ITy, true); + case ICmpInst::ICMP_NE: + case ICmpInst::ICMP_UGT: + case ICmpInst::ICMP_SLT: return ConstantInt::get(ITy, false); - else if (Pred == CmpInst::ICMP_NE) - return ConstantInt::get(ITy,...