6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-13 04:30:23 +00:00
Code Issues Projects Releases Wiki Activity

More formatting cleanup brought to you by clang-format.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220149 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2014-10-18 23:41:25 +00:00
parent e99ca835bc
commit 28502a895a
1 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
lib/Analysis/Loads.cpp
View File

@ -35,15 +35,16 @@ using namespace llvm;
///
static bool AreEquivalentAddressValues(const Value *A, const Value *B) {
// Test if the values are trivially equivalent.
if (A == B) return true;
if (A == B)
return true;
// Test if the values come from identical arithmetic instructions.
// Use isIdenticalToWhenDefined instead of isIdenticalTo because
// this function is only used when one address use dominates the
// other, which means that they'll always either have the same
// value or one of them will have an undefined value.
if (isa<BinaryOperator>(A) || isa<CastInst>(A) ||
isa<PHINode>(A) || isa<GetElementPtrInst>(A))
if (isa<BinaryOperator>(A) || isa<CastInst>(A) || isa<PHINode>(A) ||
isa<GetElementPtrInst>(A))
if (const Instruction *BI = dyn_cast<Instruction>(B))
if (cast<Instruction>(A)->isIdenticalToWhenDefined(BI))
return true;
@ -114,9 +115,11 @@ bool llvm::isSafeToLoadUnconditionally(Value *V, Instruction *ScanFrom,
return false;
if (LoadInst *LI = dyn_cast<LoadInst>(BBI)) {
if (AreEquivalentAddressValues(LI->getOperand(0), V)) return true;
if (AreEquivalentAddressValues(LI->getOperand(0), V))
return true;
} else if (StoreInst *SI = dyn_cast<StoreInst>(BBI)) {
if (AreEquivalentAddressValues(SI->getOperand(1), V)) return true;
if (AreEquivalentAddressValues(SI->getOperand(1), V))
return true;
}
}
return false;