6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-11-07 12:07:17 +00:00
Code Issues Projects Releases Wiki Activity

Remove redundant test for vector-nature. Scan the vector first to see whether

Browse Source 
our optz'n will apply to it, then build the replacement vector only if needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61279 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2008-12-20 16:48:00 +00:00
parent fce4028718
commit 9dce873c1a
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -3090,11 +3090,17 @@ Instruction *InstCombiner::visitSRem(BinaryOperator &I) {
}
// If it's a constant vector, flip any negative values positive.
if (isa<VectorType>(I.getType())) {
if (ConstantVector *RHSV = dyn_cast<ConstantVector>(Op1)) {
unsigned VWidth = RHSV->getNumOperands();
std::vector<Constant *> Elts(VWidth);
bool hasNegative = false;
for (unsigned i = 0; !hasNegative && i != VWidth; ++i)
if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i)))
if (RHS->getValue().isNegative())
hasNegative = true;
if (hasNegative) {
std::vector<Constant *> Elts(VWidth);
for (unsigned i = 0; i != VWidth; ++i) {
if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i))) {
if (RHS->getValue().isNegative())