[llvm] [X86] Support promoted ENQCMD and USER-MSR instructions (PR #77293)

[Shengchen Kan via llvm-commits]

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@@ -25,6 +32,17 @@ define i32 @test_encodekey128_u32(i32 %htype, <2 x i64> %key, ptr nocapture %h)
 ; CHECK-NEXT:    movups %xmm5, 64(%rsi)
 ; CHECK-NEXT:    movups %xmm6, 80(%rsi)
 ; CHECK-NEXT:    retq
+;
+; EGPR-LABEL: test_encodekey128_u32:
+; EGPR:       # %bb.0: # %entry
+; EGPR-NEXT:    encodekey128 %edi, %eax # encoding: [0x62,0xf4,0x7e,0x08,0xda,0xc7]
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KanRobert wrote:

Shouldn't the compression be applied automatically?

https://github.com/llvm/llvm-project/pull/77293