6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-25 13:24:46 +00:00
Code Issues Projects Releases Wiki Activity

RecursivelyDeleteTriviallyDeadInstructions() could remove

Browse Source 
more than 1 instruction. The caller need to be aware of this
and adjust instruction iterators accordingly.

rdar://16679376



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207302 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gerolf Hoflehner
2014-04-26 01:19:16 +00:00
parent 9e93e47b7f
commit 4c9277bb9f
3 changed files with 33 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
lib/Transforms/Scalar/LoopInstSimplify.cpp
View File

@@ -127,7 +127,15 @@ bool LoopInstSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
++NumSimplified;
}
}
LocalChanged |= RecursivelyDeleteTriviallyDeadInstructions(I, TLI);
bool res = RecursivelyDeleteTriviallyDeadInstructions(I, TLI);
if (res) {
// RecursivelyDeleteTriviallyDeadInstruction can remove
// more than one instruction, so simply incrementing the
// iterator does not work. When instructions get deleted
// re-iterate instead.
BI = BB->begin(); BE = BB->end();
LocalChanged |= res;
}
if (IsSubloopHeader && !isa<PHINode>(I))
break;