6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-21 18:29:45 +00:00
Code Issues Projects Releases Wiki Activity

Don't DCE the landingpad instruction.

Browse Source 
The landingpad instruction can be removed only when its invokes are removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138930 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-09-01 01:16:58 +00:00
parent 65088e7d96
commit 1893cd3131
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -1577,6 +1577,11 @@ bool InstCombiner::DoOneIteration(Function &F, unsigned Iteration) {
while (Term != BB->begin()) { // Remove instrs bottom-up
BasicBlock::iterator I = Term; --I;
// Don't remove the landingpad instruction. This should be removed
// only if its invokes are also removed.
if (isa<LandingPadInst>(I))
continue;
DEBUG(errs() << "IC: DCE: " << *I << '\n');
// A debug intrinsic shouldn't force another iteration if we weren't
// going to do one without it.