[llvm] [AMDGPU][MC] Fix disassemble of image_gather4 with d16 (PR #114609)

[Jay Foad via llvm-commits]

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@@ -443,6 +443,12 @@
 # GFX10: image_gather4 v[16:19], [v8, v9, v10], s[20:27], s[100:103] dmask:0xf dim:SQ_RSRC_IMG_3D ; encoding: [0x12,0x0f,0x00,0xf1,0x08,0x10,0x25,0x03,0x09,0x0a,0x00,0x00]
 0x12,0x0f,0x00,0xf1,0x08,0x10,0x25,0x03,0x09,0x0a,0x0b,0x0c
 
+# GFX10: image_gather4 v[252:255], v[1:2], s[8:15], s[12:15] dmask:0x8 dim:SQ_RSRC_IMG_2D ; encoding: [0x08,0x08,0x00,0xf1,0x01,0xfc,0x62,0x00]
+0x08,0x08,0x00,0xf1,0x01,0xfc,0x62,0x00
+
+# image_gather4 v[254:255], v[1:2], s[8:15], s[12:15] dmask:0x8 dim:SQ_RSRC_IMG_2D d16 ; encoding: [0x08,0x08,0x00,0xf1,0x01,0xfe,0x62,0x80]
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jayfoad wrote:

Missing GFX10: prefix

https://github.com/llvm/llvm-project/pull/114609