diff options
Diffstat (limited to 'llvm/lib/Transforms/IPO/GlobalOpt.cpp')
| -rw-r--r-- | llvm/lib/Transforms/IPO/GlobalOpt.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/IPO/GlobalOpt.cpp b/llvm/lib/Transforms/IPO/GlobalOpt.cpp index 1761d7faff5..5518ef8fce9 100644 --- a/llvm/lib/Transforms/IPO/GlobalOpt.cpp +++ b/llvm/lib/Transforms/IPO/GlobalOpt.cpp @@ -2107,6 +2107,13 @@ static bool hasChangeableCC(Function *F) { if (CC != CallingConv::C && CC != CallingConv::X86_ThisCall) return false; + // Don't break the invariant that the inalloca parameter is the only parameter + // passed in memory. + // FIXME: GlobalOpt should remove inalloca when possible and hoist the dynamic + // alloca it uses to the entry block if possible. + if (F->getAttributes().hasAttrSomewhere(Attribute::InAlloca)) + return false; + // FIXME: Change CC for the whole chain of musttail calls when possible. // // Can't change CC of the function that either has musttail calls, or is a |
