diff options
Diffstat (limited to 'lib/Transforms/Utils/InlineFunction.cpp')
-rw-r--r-- | lib/Transforms/Utils/InlineFunction.cpp | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/lib/Transforms/Utils/InlineFunction.cpp b/lib/Transforms/Utils/InlineFunction.cpp index ab60a400e5..e01d0c38ec 100644 --- a/lib/Transforms/Utils/InlineFunction.cpp +++ b/lib/Transforms/Utils/InlineFunction.cpp @@ -755,8 +755,13 @@ bool llvm::InlineFunction(CallSite CS, InlineFunctionInfo &IFI, } builder.CreateLifetimeStart(AI, AllocaSize); - for (ReturnInst *RI : Returns) + for (ReturnInst *RI : Returns) { + // Don't insert llvm.lifetime.end calls between a musttail call and a + // return. The return kills all local allocas. + if (InlinedMustTailCalls && getPrecedingMustTailCall(RI)) + continue; IRBuilder<>(RI).CreateLifetimeEnd(AI, AllocaSize); + } } } @@ -774,8 +779,13 @@ bool llvm::InlineFunction(CallSite CS, InlineFunctionInfo &IFI, // Insert a call to llvm.stackrestore before any return instructions in the // inlined function. - for (ReturnInst *RI : Returns) + for (ReturnInst *RI : Returns) { + // Don't insert llvm.stackrestore calls between a musttail call and a + // return. The return will restore the stack pointer. + if (InlinedMustTailCalls && getPrecedingMustTailCall(RI)) + continue; IRBuilder<>(RI).CreateCall(StackRestore, SavedPtr); + } } // If we are inlining for an invoke instruction, we must make sure to rewrite |