6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-15 05:24:01 +00:00
Code Issues Projects Releases Wiki Activity

Change constant folding APIs to take an optional TargetData, and change

Browse Source 
ConstantFoldInstOperands/ConstantFoldCall to take a pointer to an array
of operands + size, instead of an std::vector.

In some cases, switch to using a SmallVector instead of a vector.
This allows us to get rid of some special case gross code that was there
to avoid the cost of constructing a vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33670 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-01-30 23:13:49 +00:00
parent 73259caa44
commit 9fa038dc21
2 changed files with 18 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
lib/Transforms/Utils/CloneFunction.cpp
View File

@ -21,6 +21,7 @@
#include "llvm/Support/CFG.h"
#include "ValueMapper.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/ADT/SmallVector.h"
using namespace llvm;
// CloneBasicBlock - See comments in Cloning.h
@ -281,24 +282,7 @@ void PruningFunctionCloner::CloneBlock(const BasicBlock *BB) {
/// mapping its operands through ValueMap if they are available.
Constant *PruningFunctionCloner::
ConstantFoldMappedInstruction(const Instruction *I) {
if (isa<CmpInst>(I)) {
if (Constant *Op0 = dyn_cast_or_null<Constant>(MapValue(I->getOperand(0),
ValueMap)))
if (Constant *Op1 = dyn_cast_or_null<Constant>(MapValue(I->getOperand(1),
ValueMap)))
return ConstantExpr::getCompare(cast<CmpInst>(I)->getPredicate(), Op0,
Op1);
return 0;
} else if (isa<BinaryOperator>(I) || isa<ShiftInst>(I)) {
if (Constant *Op0 = dyn_cast_or_null<Constant>(MapValue(I->getOperand(0),
ValueMap)))
if (Constant *Op1 = dyn_cast_or_null<Constant>(MapValue(I->getOperand(1),
ValueMap)))
return ConstantExpr::get(I->getOpcode(), Op0, Op1);
return 0;
}
std::vector<Constant*> Ops;
SmallVector<Constant*, 8> Ops;
for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
if (Constant *Op = dyn_cast_or_null<Constant>(MapValue(I->getOperand(i),
ValueMap)))
@ -306,7 +290,7 @@ ConstantFoldMappedInstruction(const Instruction *I) {
else
return 0; // All operands not constant!
return ConstantFoldInstOperands(I, Ops);
return ConstantFoldInstOperands(I, &Ops[0], Ops.size());
}
/// CloneAndPruneFunctionInto - This works exactly like CloneFunctionInto,