6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-13 04:38:24 +00:00
Code Issues Projects Releases Wiki Activity

[WinEH] Handle a landingpad, resume, and cleanup all rolled into a BB

Browse Source 
This happens a lot with simple cleanups after SimplifyCFG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235117 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner
2015-04-16 17:02:23 +00:00
parent d3557eb1f8
commit c4e7ecff42
2 changed files with 39 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
lib/CodeGen/WinEHPrepare.cpp
View File

@ -1582,11 +1582,10 @@ void WinEHPrepare::findCleanupHandlers(LandingPadActions &Actions,
InsertValueInst *Insert1 = nullptr;
InsertValueInst *Insert2 = nullptr;
Value *ResumeVal = Resume->getOperand(0);
// If there is only one landingpad, we may use the lpad directly with no
// insertions.
if (isa<LandingPadInst>(ResumeVal))
return;
if (!isa<PHINode>(ResumeVal)) {
// If the resume value isn't a phi or landingpad value, it should be a
// series of insertions. Identify them so we can avoid them when scanning
// for cleanups.
if (!isa<PHINode>(ResumeVal) && !isa<LandingPadInst>(ResumeVal)) {
Insert2 = dyn_cast<InsertValueInst>(ResumeVal);
if (!Insert2)
return createCleanupHandler(Actions, CleanupHandlerMap, BB);
@ -1702,7 +1701,6 @@ void WinEHPrepare::findCleanupHandlers(LandingPadActions &Actions,
return;
BB = Branch->getSuccessor(0);
}
return;
}
// This is a public function, declared in WinEHFuncInfo.h and is also