6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-01 12:24:24 +00:00
Code Issues Projects Releases Wiki Activity

Add a workaround for PR962, disabling the more aggressive form of this

Browse Source 
transformation.  This speeds up a C++ app 2.25x.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31113 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-10-22 18:42:26 +00:00
parent 2cb46e18cb
commit 32b1e87f11
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Transforms/Scalar/TailRecursionElimination.cpp
View File

@ -140,6 +140,14 @@ bool TailCallElim::runOnFunction(Function &F) {
FunctionContainsEscapingAllocas |= FunctionContainsEscapingAllocas |=
CheckForEscapingAllocas(BB, CannotTCETailMarkedCall); CheckForEscapingAllocas(BB, CannotTCETailMarkedCall);
} }
/// FIXME: The code generator produces really bad code when an 'escaping
/// alloca' is changed from being a static alloca to being a dynamic alloca.
/// Until this is resolved, disable this transformation if that would ever
/// happen. This bug is PR962.
if (FunctionContainsEscapingAllocas)
return false;
// Second pass, change any tail calls to loops. // Second pass, change any tail calls to loops.
for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)