6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-01 10:57:21 +00:00
Code Issues Projects Releases Wiki Activity

Keep ignoring pointer-to-pointer bitcasts

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94194 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Victor Hernandez 2010-01-22 19:05:05 +00:00
parent 7481ae6572
commit 29fa5e9886
2 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
View File

@ -406,8 +406,10 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
for (unsigned ScanInsts = 6; BBI != SI.getParent()->begin() && ScanInsts;
--ScanInsts) {
--BBI;
// Don't count debug info directives, lest they affect codegen
if (isa<DbgInfoIntrinsic>(BBI)) {
// Don't count debug info directives, lest they affect codegen,
// and we skip pointer-to-pointer bitcasts, which are NOPs.
if (isa<DbgInfoIntrinsic>(BBI) ||
(isa<BitCastInst>(BBI) && isa<PointerType>(BBI->getType()))) {
ScanInsts++;
continue;
}
@ -476,7 +478,8 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
BBI = &SI;
do {
++BBI;
} while (isa<DbgInfoIntrinsic>(BBI));
} while (isa<DbgInfoIntrinsic>(BBI) ||
(isa<BitCastInst>(BBI) && isa<PointerType>(BBI->getType())));
if (BranchInst *BI = dyn_cast<BranchInst>(BBI))
if (BI->isUnconditional())
if (SimplifyStoreAtEndOfBlock(SI))
@ -536,7 +539,8 @@ bool InstCombiner::SimplifyStoreAtEndOfBlock(StoreInst &SI) {
if (OtherBr->isUnconditional()) {
--BBI;
// Skip over debugging info.
while (isa<DbgInfoIntrinsic>(BBI)) {
while (isa<DbgInfoIntrinsic>(BBI) ||
(isa<BitCastInst>(BBI) && isa<PointerType>(BBI->getType()))) {
if (BBI==OtherBB->begin())
return false;
--BBI;

3
lib/Transforms/Utils/PromoteMemoryToRegister.cpp
View File

@ -76,9 +76,6 @@ bool llvm::isAllocaPromotable(const AllocaInst *AI) {
return false; // Don't allow a store OF the AI, only INTO the AI.
if (SI->isVolatile())
return false;
} else if (isa<BitCastInst>(*UI)) {
// A bitcast inhibits promotion.
return false;
} else {
return false;
}