[PATCH] D150016: [RISCV] Make Zvfh depend on Zfhmin.

[Jianjian Guan via Phabricator via llvm-commits]

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According to the v spec, the Zvfh extension depends on the Zve32f and Zfhmin extensions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D150016

Files:
  llvm/lib/Target/RISCV/RISCVFeatures.td
  llvm/lib/Target/RISCV/RISCVSubtarget.h


Index: llvm/lib/Target/RISCV/RISCVSubtarget.h
===================================================================
--- llvm/lib/Target/RISCV/RISCVSubtarget.h
+++ llvm/lib/Target/RISCV/RISCVSubtarget.h
@@ -151,9 +151,7 @@
   // Vector codegen related methods.
   bool hasVInstructions() const { return HasStdExtZve32x; }
   bool hasVInstructionsI64() const { return HasStdExtZve64x; }
-  bool hasVInstructionsF16() const {
-    return HasStdExtZvfh && hasStdExtZfhOrZfhmin();
-  }
+  bool hasVInstructionsF16() const { return HasStdExtZvfh; }
   // FIXME: Consider Zfinx in the future
   bool hasVInstructionsF32() const { return HasStdExtZve32f && HasStdExtF; }
   // FIXME: Consider Zdinx in the future
Index: llvm/lib/Target/RISCV/RISCVFeatures.td
===================================================================
--- llvm/lib/Target/RISCV/RISCVFeatures.td
+++ llvm/lib/Target/RISCV/RISCVFeatures.td
@@ -442,7 +442,7 @@
 def FeatureStdExtZvfh
     : SubtargetFeature<"experimental-zvfh", "HasStdExtZvfh", "true",
                        "'Zvfh' (Vector Half-Precision Floating-Point)",
-                       [FeatureStdExtZve32f]>;
+                       [FeatureStdExtZve32f, FeatureStdExtZfhmin]>;
 
 def HasStdExtZfhOrZvfh
     : Predicate<"Subtarget->hasStdExtZfh() || Subtarget->hasStdExtZvfh()">,


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