[AMDGPU] New GFX12 aliases bvh_intersect_ray and similar (#119213)

This is for compatibility with SP3.

Author: jayfoad

llvm/lib/Target/AMDGPU/MIMGInstructions.td

@@ -1793,6 +1793,11 @@ defm IMAGE_BVH64_INTERSECT_RAY     : MIMG_IntersectRay<mimgopc<0x1a, 0x1a, 0xe7>
 defm IMAGE_BVH64_INTERSECT_RAY_a16 : MIMG_IntersectRay<mimgopc<0x1a, 0x1a, 0xe7>, "image_bvh64_intersect_ray", 1, 1>;
 } // End OtherPredicates = [HasImageInsts, HasGFX10_AEncoding]
 
+let SubtargetPredicate = isGFX12Plus in {
+  def : AMDGPUMnemonicAlias<"bvh_intersect_ray", "image_bvh_intersect_ray">;
+  def : AMDGPUMnemonicAlias<"bvh64_intersect_ray", "image_bvh64_intersect_ray">;
+}
+
 } // End let OtherPredicates = [HasImageInsts]
 
 /********** ========================================= **********/

llvm/test/MC/AMDGPU/gfx12_asm_vimage_alias.s

@@ -35,3 +35,9 @@ image_atomic_fmin v0, v0, s[0:7] dmask:0x1 dim:SQ_RSRC_IMG_1D
 
 image_atomic_fmax v0, v0, s[0:7] dmask:0x1 dim:SQ_RSRC_IMG_1D
 // GFX12: image_atomic_max_flt v0, v0, s[0:7] dmask:0x1 dim:SQ_RSRC_IMG_1D ; encoding: [0x00,0x40,0x61,0xd0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+
+bvh_intersect_ray v[4:7], [v9, v10, v[11:13], v[14:16], v[17:19]], s[4:7]
+// GFX12: image_bvh_intersect_ray v[4:7], [v9, v10, v[11:13], v[14:16], v[17:19]], s[4:7] ; encoding: [0x10,0x40,0xc6,0xd3,0x04,0x08,0x00,0x11,0x09,0x0a,0x0b,0x0e]
+
+bvh64_intersect_ray v[4:7], [v[9:10], v11, v[12:14], v[15:17], v[18:20]], s[4:7]
+// GFX12: image_bvh64_intersect_ray v[4:7], [v[9:10], v11, v[12:14], v[15:17], v[18:20]], s[4:7] ; encoding: [0x10,0x80,0xc6,0xd3,0x04,0x08,0x00,0x12,0x09,0x0b,0x0c,0x0f]