6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-10 02:36:06 +00:00
Code Issues Projects Releases Wiki Activity

Do not unswitch if the function notes say we're optimizing this function for size.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55786 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2008-09-04 18:55:13 +00:00
parent eb50479714
commit 10b359ccb6
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Transforms/Scalar/LoopUnswitch.cpp
View File

@ -417,6 +417,13 @@ unsigned LoopUnswitch::getLoopUnswitchCost(Value *LIC) {
/// LoopCond == Val to simplify the loop. If we decide that this is profitable,
/// unswitch the loop, reprocess the pieces, then return true.
bool LoopUnswitch::UnswitchIfProfitable(Value *LoopCond, Constant *Val){
Function *F = loopHeader->getParent();
// Do not unswitch if the function is optimized for size.
if (F->getNotes() & FN_NOTE_OptimizeForSize)
return false;
// Check to see if it would be profitable to unswitch current loop.
unsigned Cost = getLoopUnswitchCost(LoopCond);
@ -445,7 +452,6 @@ bool LoopUnswitch::UnswitchIfProfitable(Value *LoopCond, Constant *Val){
}
// FIXME: Reconstruct dom info, because it is not preserved properly.
Function *F = loopHeader->getParent();
if (DT)
DT->runOnFunction(*F);
if (DF)