[PATCH] D89449: [RISCV] Initial infrastructure for code generation of the RISC-V V-extension

[Jessica Clarke via Phabricator via llvm-commits]

jrtc27 added inline comments.


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Comment at: llvm/lib/Target/RISCV/RISCVISelLowering.cpp:131
+
+    addRegisterClass(RISCVVMVTs::vfloat64m1_t, &RISCV::VRRegClass);
+    addRegisterClass(RISCVVMVTs::vfloat64m2_t, &RISCV::VRM2RegClass);
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HsiangKai wrote:
> craig.topper wrote:
> > Should the types be qualified with hasStdExtD()?  I have the same question for F but it looks like V extension currently implicitly enables the F extension.
> I am curious about V should imply F or not. It is vague in the V specification.
Currently I read it as no, in that V+Zfinx is a valid combination and would have the FP vector-scalar instructions reading the FP scalar from the "integer' register file.


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  https://reviews.llvm.org/D89449/new/

https://reviews.llvm.org/D89449