search for: int_stacksave

...nput, (possibly inside of loops) and I would rather avoid a stack overflow. You can't explicitly free a specific alloca, but you can use the llvm.stacksave and llvm.stackrestore intrinsics to free all allocas performed after calling the stacksave intrinsic. http://llvm.org/docs/LangRef.html#int_stacksave

...hrough the variable tmp4 are wrong. Maybe some dependencies between alloca and the stackrestore instrinsic are missing or how should this work? In Intrinsics.td it says // Note: we treat stacksave/stackrestore as writemem because we don't otherwise // model their dependencies on allocas. def int_stacksave : Intrinsic<[llvm_ptr_ty]>, GCCBuiltin<"__builtin_stack_save">; def int_stackrestore : Intrinsic<[], [llvm_ptr_ty]>, GCCBuiltin<"__builtin_stack_restore">; Does "GCCBuiltin" imply "w...

Hello, I would just like to ask if it's possible to explicitly free allocas. This is because I need to call functions that take structs of different sizes as input, (possibly inside of loops) and I would rather avoid a stack overflow. If this is not possible, an alternate solution would be for me to allocate an array of bytes larger than all the struct types I may be using, and cast that

...er avoid a stack >> overflow. > > You can't explicitly free a specific alloca, but you can use the > llvm.stacksave > and llvm.stackrestore intrinsics to free all allocas performed after > calling the > stacksave intrinsic. > > http://llvm.org/docs/LangRef.html#int_stacksave > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > > -- View this message in context: http://www.nabble.com/Explicitly-Freeing-Allocas-t...

...aybe some dependencies between alloca and the stackrestore instrinsic > are missing or how should this work? > > In Intrinsics.td it says > > // Note: we treat stacksave/stackrestore as writemem because we don't > otherwise > // model their dependencies on allocas. > def int_stacksave : Intrinsic<[llvm_ptr_ty]>, > GCCBuiltin<"__builtin_stack_save">; > def int_stackrestore : Intrinsic<[], [llvm_ptr_ty]>, > GCCBuiltin<"__builtin_stack_restore">; > > Does "GCCB...