PPC64: Assertion failure in toir.cpp

[redstar]

On PPC64 there is an assertion failure while compiling std.math:

ldc2: /opt/llvm/include/llvm/IR/Instructions.h:1113: void llvm::ICmpInst::AssertOK(): Assertion `(getOperand(0)->getType()->isIntOrIntVectorTy() || getOperand(0)->getType()->isPtrOrPtrVectorTy()) && "Invalid operand types for ICmp instruction"' failed.

In toir.cpp, line 1195, an ICmp instruction is generated. The assertion is triggered because both operands have floating point type.

[redstar]

It turns out that there is still an ABI problem with ppc/ppc64. I fixed most of it but not yet everything.

[redstar]

The ABI fixes are now good enough that LDC can compile itself. There's still an error left...

[JohanEngelen]

@redstar What's the status of this?