8ac46d6b4f
This PR is to solve several intertwined issues with type inference while adding support for builtins for OpIAddCarry and OpISubBorrow: * OpIAddCarry and OpISubBorrow generation in a way of supporting SPIR-V friendly builtins `__spirv_...` -- introduces a new element to account for, namely, `ptr sret (%struct) %0` argument that is a place to put a result of the instruction; * fix early definition of SPIR-V types during call lowering -- namely, the goal of the PR is to ensure that correct types are applied to virtual registers which were used as arguments in call lowering and so caused early definition of SPIR-V types; reproducers are attached as a new test cases; * improve parsing of builtin names (e.g., understand a name of a kind `"anon<int, int> __spirv_IAddCarry<int, int>(int, int)"` that was incorrectly parsed as `anon` before the PR); * improve type inference and fix access to erased from parent after visit instructions -- before the PR visiting of instructions in emitintrinsics pass replaced old alloca's, bitcast's, etc. instructions with a newly generated internal SPIR-V intrinsics and after erasing old instructions there were still references to them in a postprocessing working list, while records for newly deduced pointee types were lost; this PR fixes the issue by adding as consistent wrt. internal data structures action `SPIRVEmitIntrinsics::replaceAllUsesWith()` that fixes above mentioned problems; * LLVM IR add/sub instructions result in logical SPIR-V instructions when applied to bool type; * fix validation of pointer types for frexp and lgamma_r, * fix hardcoded reference to AS0 as a Function storage class in lib/Target/SPIRV/SPIRVBuiltins.cpp -- now it's `storageClassToAddressSpace(SPIRV::StorageClass::Function)`, * re-use the same OpTypeStruct for two identical references to struct's in arithmetic with overflow instructions.
27 KiB
27 KiB