6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-09-25 17:20:48 +00:00
Code Issues Projects Releases Wiki Activity

Duncan pointed out that the LandingPadInst might read memory. (It might also

Browse Source 
write to memory.) Marking it as such makes some checks for immobility go away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137655 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2011-08-15 21:14:31 +00:00
parent 0455bb89cd
commit 9d6070f161
3 changed files with 4 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
lib/Transforms/InstCombine/InstructionCombining.cpp
View File

@@ -1417,9 +1417,8 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
static bool TryToSinkInstruction(Instruction *I, BasicBlock *DestBlock) {
assert(I->hasOneUse() && "Invariants didn't hold!");
// Cannot move control-flow-involving, volatile loads, vaarg, landingpad, etc.
if (isa<PHINode>(I) || isa<LandingPadInst>(I) || I->mayHaveSideEffects() ||
isa<TerminatorInst>(I))
// Cannot move control-flow-involving, volatile loads, vaarg, etc.
if (isa<PHINode>(I) || I->mayHaveSideEffects() || isa<TerminatorInst>(I))
return false;
// Do not sink alloca instructions out of the entry block.