Mercurial > projects > ldc
diff gen/naked.cpp @ 988:2667e3a145be
- Fixed LLVM style CL args for D2.
- Moved main() into its own file gen/main.cpp
- Fixed basic cross compilation
- removed the option for setting OS
- added support for llc's mattr, mcpu and mtriple switches
- added basic ABI abstraction for return value rewrites, it's not perfect and will probably be completely rewritten once I get to handling parameter rewrites as well.
- x86-64 extern(C) abi for cfloat returns now match (llvm-)gcc.
| author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
|---|---|
| date | Thu, 26 Feb 2009 14:11:49 +0100 |
| parents | 7e669954db7d |
| children | c749648ed2b8 |
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--- a/gen/naked.cpp Wed Feb 25 19:30:06 2009 +0100 +++ b/gen/naked.cpp Thu Feb 26 14:11:49 2009 +0100 @@ -218,6 +218,8 @@ // this is to show how to allocate a temporary for the return value // in case the appropriate multi register constraint isn't supported. // this way abi return from inline asm can still be emulated. + // note that "$<<out0>>" etc in the asm will translate to the correct + // numbered output when the asm block in finalized // generate asm as->out_c = "=*m,=*m,"; @@ -231,7 +233,7 @@ asmblock->retemu = true; asmblock->asmBlock->abiret = tmp; - // add "ret" stmt + // add "ret" stmt at the end of the block asmblock->s.push_back(as); // done, we don't want anything pushed in the front of the block @@ -276,17 +278,9 @@ // LLVM and GCC disagree on how to return {float, float}. // For compatibility, use the GCC/LLVM-GCC way for extern(C/Windows) // extern(C) cfloat -> %xmm0 (extract two floats) - #if 0 - // Disabled because "regular" extern(C) functions aren't - // ABI-compatible with GCC yet. - // TODO: enable when "extern(C) cfloat foo();" compiles to "declare { double } @foo();" as->out_c = "={xmm0},"; asmblock->retty = LLStructType::get(LLType::DoubleTy, NULL);; asmblock->retfixup = &x86_64_cfloatRetFixup; - #else - error(loc, "unimplemented return type '%s' for implicit abi return", rt->toChars()); - fatal(); - #endif } else if (rt->iscomplex()) { // cdouble and extern(D) cfloat -> re=%xmm0, im=%xmm1 as->out_c = "={xmm0},={xmm1},";