[llvm] [RISCV] Make All VType Parts Optional (PR #144971)

[Sam Elliott via llvm-commits]

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@@ -1,12 +1,6 @@
 # RUN: not llvm-mc -triple=riscv64 --mattr=+v --mattr=+f %s 2>&1 \
 # RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
 
-vsetivli a2, 32, e8,m1
-# CHECK-ERROR: operand must be e[8|16|32|64],m[1|2|4|8|f2|f4|f8],[ta|tu],[ma|mu]
-
-vsetivli a2, zero, e8,m1
-# CHECK-ERROR: operand must be e[8|16|32|64],m[1|2|4|8|f2|f4|f8],[ta|tu],[ma|mu]
-
 vsetivli a2, 5, (1 << 10)
 # CHECK-ERROR: operand must be e[8|16|32|64],m[1|2|4|8|f2|f4|f8],[ta|tu],[ma|mu]
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lenary wrote:

If we want, I could look at immediately adding deprecation warnings when anything is left out?

That way it works correctly, but we also get to tell users we don't want to support the optional syntax indefinitely (presumably when another version of the spec is officially released/ratified, the fields will no longer be optional)

https://github.com/llvm/llvm-project/pull/144971