From f12c2552b3f494cbc8245edb90b32b93ca8a1539 Mon Sep 17 00:00:00 2001 From: Tim Foley Date: Mon, 16 Oct 2017 13:12:11 -0700 Subject: Implement notion of a "container format" (#213) The big addition here is that the Slang "bytecode" is no longer treated as just a "code generation target" (`CodeGenTarget`) akin to DX bytecode (DXBC) or SPIR-V, but instead is a `ContainerFormat` that can be used to emit all the results of a compile request (well, currently just the IR-as-BC, but the intention is there). Getting to this goal involved some prior checkins that eliminated bogus "targets" that weren't really akin to SPIR-V or DXBC: `-target slang-ir-asm` and `-target reflection-json`. Those targets were really in place to support testing, and so they've been made more explicit testing/debug options. This change eliminates `-target slang-ir` and instead tries to allow the user to specify `-o foo.slang-module` as an output file name, that indicates the intention to output a "container" file that will wrap up all the generated code. I've also gone ahead and generalized the existing `-target` option so that we are actually building up a *list* of code generation targets. This is largely just a cleanup, since it forces code to be more aware of when it is doing something target-specific vs. target independent. For example, reflection layout information lives on a requested target, and not on the compile request as a whole, and similarly output code is per-target, per-entry-point. As a cleanup, I eliminated support for per-translation-unit output. This was vestigial code from back when I used to try and do HLSL generation for a whole translation unit instead of per-entry-point (which turned out to be a lot of complexity for little gain), and it was only being used in the `hello` example and the `render-test` test fixture - in both cases fixing it up was easy enough. I've stubbed out the old `spGetTranslationUnitSource` API, but haven't removed it yet. --- source/slang/bytecode.h | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) (limited to 'source/slang/bytecode.h') diff --git a/source/slang/bytecode.h b/source/slang/bytecode.h index 1ea16406f..f38007ba9 100644 --- a/source/slang/bytecode.h +++ b/source/slang/bytecode.h @@ -225,11 +225,27 @@ struct BCHeader // kinds of data without having to revise // the schema here. - // The bytecode representation of the module - BCPtr module; + // TODO: should include AST declaration structure + // here, which can be used for refleciton, and + // also loaded to resolve dependencies when + // compiling other modules. + + // TODO: Include the original entry point requests? + + // Zero or more IR modules, corresponding to + // the translation units of the original compile + // request. + uint32_t moduleCount; + BCPtr> modules; + + // TODO: should enumerate targets here, and + // include reflection layout info + compiled + // entry points for each target. }; - +struct CompileRequest; +void generateBytecodeForCompileRequest( + CompileRequest* compileReq); } -- cgit v1.2.3