AMDGPU: Add alias tests for load transpose instructions for gfx1250 (#146117)

Author: changpeng

llvm/test/MC/AMDGPU/gfx1250_asm_vds_alias.s

@@ -0,0 +1,7 @@
+// RUN: llvm-mc -triple=amdgcn -mcpu=gfx1250 -show-encoding %s | FileCheck --check-prefixes=GFX1250 %s
+
+ds_load_tr_b64 v[2:3], v0
+// GFX1250: ds_load_tr8_b64 v[2:3], v0              ; encoding: [0x00,0x00,0xf4,0xdb,0x00,0x00,0x00,0x02]
+
+ds_load_tr_b128 v[2:5], v0
+// GFX1250: ds_load_tr16_b128 v[2:5], v0            ; encoding: [0x00,0x00,0xf0,0xdb,0x00,0x00,0x00,0x02]

llvm/test/MC/AMDGPU/gfx1250_asm_vflat_alias.s

@@ -0,0 +1,37 @@
+// RUN: llvm-mc -triple=amdgcn -mcpu=gfx1250 -show-encoding %s | FileCheck --check-prefix=GFX1250 %s
+
+global_load_tr_b64 v[2:3], v0, s[0:1]
+// GFX1250: global_load_tr8_b64 v[2:3], v0, s[0:1]  ; encoding: [0x00,0x00,0x16,0xee,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+
+global_load_tr_b64 v[2:3], v0, s[0:1] offset:64
+// GFX1250: global_load_tr8_b64 v[2:3], v0, s[0:1] offset:64 ; encoding: [0x00,0x00,0x16,0xee,0x02,0x00,0x00,0x00,0x00,0x40,0x00,0x00]
+
+global_load_tr_b64 v[2:3], v0, s[0:1] offset:-64
+// GFX1250: global_load_tr8_b64 v[2:3], v0, s[0:1] offset:-64 ; encoding: [0x00,0x00,0x16,0xee,0x02,0x00,0x00,0x00,0x00,0xc0,0xff,0xff]
+
+global_load_tr_b64 v[2:3], v[4:5], off
+// GFX1250: global_load_tr8_b64 v[2:3], v[4:5], off ; encoding: [0x7c,0x00,0x16,0xee,0x02,0x00,0x00,0x00,0x04,0x00,0x00,0x00]
+
+global_load_tr_b64 v[2:3], v[4:5], off offset:64
+// GFX1250: global_load_tr8_b64 v[2:3], v[4:5], off offset:64 ; encoding: [0x7c,0x00,0x16,0xee,0x02,0x00,0x00,0x00,0x04,0x40,0x00,0x00]
+
+global_load_tr_b64 v[2:3], v[4:5], off offset:-64
+// GFX1250: global_load_tr8_b64 v[2:3], v[4:5], off offset:-64 ; encoding: [0x7c,0x00,0x16,0xee,0x02,0x00,0x00,0x00,0x04,0xc0,0xff,0xff]
+
+global_load_tr_b128 v[2:5], v0, s[0:1]
+// GFX1250: global_load_tr16_b128 v[2:5], v0, s[0:1] ; encoding: [0x00,0xc0,0x15,0xee,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+
+global_load_tr_b128 v[2:5], v0, s[0:1] offset:64
+// GFX1250: global_load_tr16_b128 v[2:5], v0, s[0:1] offset:64 ; encoding: [0x00,0xc0,0x15,0xee,0x02,0x00,0x00,0x00,0x00,0x40,0x00,0x00]
+
+global_load_tr_b128 v[2:5], v0, s[0:1] offset:-64
+// GFX1250: global_load_tr16_b128 v[2:5], v0, s[0:1] offset:-64 ; encoding: [0x00,0xc0,0x15,0xee,0x02,0x00,0x00,0x00,0x00,0xc0,0xff,0xff]
+
+global_load_tr_b128 v[2:5], v[6:7], off
+// GFX1250: global_load_tr16_b128 v[2:5], v[6:7], off ; encoding: [0x7c,0xc0,0x15,0xee,0x02,0x00,0x00,0x00,0x06,0x00,0x00,0x00]
+
+global_load_tr_b128 v[2:5], v[6:7], off offset:64
+// GFX1250: global_load_tr16_b128 v[2:5], v[6:7], off offset:64 ; encoding: [0x7c,0xc0,0x15,0xee,0x02,0x00,0x00,0x00,0x06,0x40,0x00,0x00]
+
+global_load_tr_b128 v[2:5], v[6:7], off offset:-64
+// GFX1250: global_load_tr16_b128 v[2:5], v[6:7], off offset:-64 ; encoding: [0x7c,0xc0,0x15,0xee,0x02,0x00,0x00,0x00,0x06,0xc0,0xff,0xff]