determine ldc version in static if or version?

[Nicholas Wilson]

On Wednesday, 1 April 2020 at 21:19:54 UTC, Adam D. Ruppe wrote:
> I want to do like
>
> static if(__LDC_VERSION == 1.19) {
>   // declaration
> }
>
>
> All the tricks I know that I have tried so far give the dmd 
> numbers. Perhaps I could use that to identify a particular 
> version as a hack, but I specifically am curious about the ldc 
> version because of a change they made there independently of D.
>
> Is there something I don't know about?

https://github.com/ldc-developers/druntime/blob/ldc/src/ldc/intrinsics.di#L22-L34

      version (LDC_LLVM_309)  enum LLVM_version =  309;
else version (LDC_LLVM_400)  enum LLVM_version =  400;
else version (LDC_LLVM_500)  enum LLVM_version =  500;
else version (LDC_LLVM_600)  enum LLVM_version =  600;
else version (LDC_LLVM_700)  enum LLVM_version =  700;
else version (LDC_LLVM_701)  enum LLVM_version =  701;
else version (LDC_LLVM_800)  enum LLVM_version =  800;
else version (LDC_LLVM_900)  enum LLVM_version =  900;
else version (LDC_LLVM_1000) enum LLVM_version = 1000;
else version (LDC_LLVM_1100) enum LLVM_version = 1100;
else static assert(false, "LDC LLVM version not supported");

enum LLVM_atleast(int major) = (LLVM_version >= major * 100);