[AMDGPU] Fix GFX11 sendmsg codes (#85299)

The code MSG_RTN_GET_TBA_TO_PC was missing, and the next code is off by
1 as a result.

Author: rampitec

llvm/lib/Target/AMDGPU/SIDefines.h

@@ -460,7 +460,8 @@ enum Id { // Message ID, width(4) [3:0].
   ID_RTN_GET_REALTIME = 131,
   ID_RTN_SAVE_WAVE = 132,
   ID_RTN_GET_TBA = 133,
-  ID_RTN_GET_SE_AID_ID = 134,
+  ID_RTN_GET_TBA_TO_PC = 134,
+  ID_RTN_GET_SE_AID_ID = 135,
 
   ID_MASK_PreGFX11_ = 0xF,
   ID_MASK_GFX11Plus_ = 0xFF

llvm/lib/Target/AMDGPU/Utils/AMDGPUAsmUtils.cpp

@@ -60,6 +60,7 @@ const CustomOperand<const MCSubtargetInfo &> Msg[] = {
   {{"MSG_RTN_GET_REALTIME"},    ID_RTN_GET_REALTIME,        isGFX11Plus},
   {{"MSG_RTN_SAVE_WAVE"},       ID_RTN_SAVE_WAVE,           isGFX11Plus},
   {{"MSG_RTN_GET_TBA"},         ID_RTN_GET_TBA,             isGFX11Plus},
+  {{"MSG_RTN_GET_TBA_TO_PC"},   ID_RTN_GET_TBA_TO_PC,       isGFX11Plus},
   {{"MSG_RTN_GET_SE_AID_ID"},   ID_RTN_GET_SE_AID_ID,       isGFX12Plus},
 };
 // clang-format on

llvm/test/MC/AMDGPU/gfx11_asm_sop1.s

@@ -2964,6 +2964,9 @@ s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_SAVE_WAVE)
 s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA)
 // GFX11: encoding: [0x85,0x4c,0x80,0xbe]
 
+s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA_TO_PC)
+// GFX11: encoding: [0x86,0x4c,0x80,0xbe]
+
 s_ctz_i32_b32 s5, s1
 // GFX11: encoding: [0x01,0x08,0x85,0xbe]
 

llvm/test/MC/AMDGPU/gfx12_asm_sop1.s

@@ -3708,9 +3708,12 @@ s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_SAVE_WAVE)
 s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA)
 // GFX12: encoding: [0x85,0x4c,0x80,0xbe]
 
-s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_SE_AID_ID)
+s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA_TO_PC)
 // GFX12: encoding: [0x86,0x4c,0x80,0xbe]
 
+s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_SE_AID_ID)
+// GFX12: encoding: [0x87,0x4c,0x80,0xbe]
+
 s_ctz_i32_b32 s5, s1
 // GFX12: encoding: [0x01,0x08,0x85,0xbe]
 

llvm/test/MC/Disassembler/AMDGPU/gfx11_dasm_sop1.txt

@@ -2536,6 +2536,9 @@
 # GFX11: s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA) ; encoding: [0x85,0x4c,0x80,0xbe]
 0x85,0x4c,0x80,0xbe
 
+# GFX11: s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA_TO_PC) ; encoding: [0x86,0x4c,0x80,0xbe]
+0x86,0x4c,0x80,0xbe
+
 # GFX11: s_setpc_b64 s[0:1]                      ; encoding: [0x00,0x48,0x80,0xbe]
 0x00,0x48,0x80,0xbe
 

llvm/test/MC/Disassembler/AMDGPU/gfx12_dasm_sop1.txt

@@ -3279,9 +3279,12 @@
 # GFX12: s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA) ; encoding: [0x85,0x4c,0x80,0xbe]
 0x85,0x4c,0x80,0xbe
 
-# GFX12: s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_SE_AID_ID) ; encoding: [0x86,0x4c,0x80,0xbe]
+# GFX12: s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_TBA_TO_PC) ; encoding: [0x86,0x4c,0x80,0xbe]
 0x86,0x4c,0x80,0xbe
 
+# GFX12: s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_SE_AID_ID) ; encoding: [0x87,0x4c,0x80,0xbe]
+0x87,0x4c,0x80,0xbe
+
 # GFX12: s_setpc_b64 s[0:1]                      ; encoding: [0x00,0x48,0x80,0xbe]
 0x00,0x48,0x80,0xbe