6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-21 08:17:40 +00:00
Code Issues Projects Releases Wiki Activity

Have a few places that want to simplify phi nodes use SimplifyInstruction

Browse Source 
rather than calling hasConstantValue.  No intended functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119352 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2010-11-16 17:41:24 +00:00
parent ab7fa0885e
commit cdbd992622
5 changed files with 18 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Transforms/Utils/LoopSimplify.cpp
+4 -3
View File
@@ -46,9 +46,10 @@
#include "llvm/LLVMContext.h"
#include "llvm/Type.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/ScalarEvolution.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/Analysis/LoopPass.h"
#include "llvm/Analysis/ScalarEvolution.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Support/CFG.h"
@@ -268,7 +269,7 @@ ReprocessLoop:
PHINode *PN;
for (BasicBlock::iterator I = L->getHeader()->begin();
(PN = dyn_cast<PHINode>(I++)); )
if (Value *V = PN->hasConstantValue(DT)) {
if (Value *V = SimplifyInstruction(PN, 0, DT)) {
if (AA) AA->deleteValue(PN);
PN->replaceAllUsesWith(V);
PN->eraseFromParent();
@@ -448,7 +449,7 @@ static PHINode *FindPHIToPartitionLoops(Loop *L, DominatorTree *DT,
for (BasicBlock::iterator I = L->getHeader()->begin(); isa<PHINode>(I); ) {
PHINode *PN = cast<PHINode>(I);
++I;
if (Value *V = PN->hasConstantValue(DT)) {
if (Value *V = SimplifyInstruction(PN, 0, DT)) {
// This is a degenerate PHI already, don't modify it!
PN->replaceAllUsesWith(V);
if (AA) AA->deleteValue(PN);