[clang] [compiler-rt] [llvm] [X86][AVX10.2] Support AVX10.2 option and VMPSADBW/VADDP[D,H,S] new instructions (PR #101452)

[Phoebe Wang via cfe-commits]

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@@ -111,9 +111,9 @@ class X86OpcodePrefixHelper {
   //  0b11: F2
 
   // EVEX (4 bytes)
-  // +-----+ +---------------+ +--------------------+ +------------------------+
-  // | 62h | | RXBR' | B'mmm | | W | vvvv | X' | pp | | z | L'L | b | v' | aaa |
-  // +-----+ +---------------+ +--------------------+ +------------------------+
+  // +-----+ +---------------+ +-------------------+ +------------------------+
+  // | 62h | | RXBR' | B'mmm | | W | vvvv | U | pp | | z | L'L | b | v' | aaa |
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phoebewang wrote:

Besides, I assume the SDM will only use `U` for this bit.

https://github.com/llvm/llvm-project/pull/101452