[AMDGPU][MC] Fix for Bug 28158 + LIT tests

[dp]

Summary

Added support for the following instructions:

• s_cbranch_cdbgsys
• s_cbranch_cdbgsys_and_user
• s_cbranch_cdbgsys_or_user
• s_cbranch_cdbguser
• s_setkill

[vpykhtin]

LGTM.

lib/Target/AMDGPU/SOPInstructions.td

def S_CBRANCH_EXECZ : SOPP <
   "s_cbranch_execz $simm16"
 >;
 def S_CBRANCH_EXECNZ : SOPP <
   0x00000009, (ins sopp_brtarget:$simm16),
   "s_cbranch_execnz $simm16"
 >;
 } // End Uses = [EXEC]
 
+def S_CBRANCH_CDBGSYS : SOPP <
+  0x00000017, (ins sopp_brtarget:$simm16),
+  "s_cbranch_cdbgsys $simm16"
+>;
+
+def S_CBRANCH_CDBGSYS_AND_USER : SOPP <
+  0x0000001A, (ins sopp_brtarget:$simm16),
+  "s_cbranch_cdbgsys_and_user $simm16"
+>;
+
+def S_CBRANCH_CDBGSYS_OR_USER : SOPP <
+  0x00000019, (ins sopp_brtarget:$simm16),
+  "s_cbranch_cdbgsys_or_user $simm16"
+>;
+
+def S_CBRANCH_CDBGUSER : SOPP <
+  0x00000018, (ins sopp_brtarget:$simm16),
+  "s_cbranch_cdbguser $simm16"
+>;
 
 } // End isBranch = 1
 } // End isTerminator = 1
 
 let hasSideEffects = 1 in {
 def S_BARRIER : SOPP <0x0000000a, (ins), "s_barrier",
   [(int_amdgcn_s_barrier)]> {
   let SchedRW = [WriteBarrier];
   let simm16 = 0;
   let mayLoad = 1;
   let mayStore = 1;
   let isConvergent = 1;
 }
 
 let mayLoad = 1, mayStore = 1, hasSideEffects = 1 in
 def S_WAITCNT : SOPP <0x0000000c, (ins WAIT_FLAG:$simm16), "s_waitcnt $simm16">;
 def S_SETHALT : SOPP <0x0000000d, (ins i16imm:$simm16), "s_sethalt $simm16">;
+def S_SETKILL : SOPP <0x0000000b, (ins i16imm:$simm16), "s_setkill $simm16">;
 
 // On SI the documentation says sleep for approximately 64 * low 2
 // bits, consistent with the reported maximum of 448. On VI the
 // maximum reported is 960 cycles, so 960 / 64 = 15 max, so is the
 // maximum really 15 on VI?
 def S_SLEEP : SOPP <0x0000000e, (ins i32imm:$simm16),
   "s_sleep $simm16", [(int_amdgcn_s_sleep SIMM16bit:$simm16)]> {
   let hasSideEffects = 1;

test/MC/AMDGPU/sopp.s

 // GCN: s_cbranch_vccnz 6 ; encoding: [0x06,0x00,0x87,0xbf]
 
 s_cbranch_execz 7
 // GCN: s_cbranch_execz 7 ; encoding: [0x07,0x00,0x88,0xbf]
 
 s_cbranch_execnz 8
 // GCN: s_cbranch_execnz 8 ; encoding: [0x08,0x00,0x89,0xbf]
 
+s_cbranch_cdbgsys 9
+// GCN: s_cbranch_cdbgsys 9 ; encoding: [0x09,0x00,0x97,0xbf]
+
+s_cbranch_cdbgsys_and_user 10
+// GCN: s_cbranch_cdbgsys_and_user 10 ; encoding: [0x0a,0x00,0x9a,0xbf]
+
+s_cbranch_cdbgsys_or_user 11
+// GCN: s_cbranch_cdbgsys_or_user 11 ; encoding: [0x0b,0x00,0x99,0xbf]
+
+s_cbranch_cdbguser 12
+// GCN: s_cbranch_cdbguser 12 ; encoding: [0x0c,0x00,0x98,0xbf]
+
 s_barrier
 // GCN: s_barrier ; encoding: [0x00,0x00,0x8a,0xbf]
 
 //===----------------------------------------------------------------------===//
 // s_waitcnt
 //===----------------------------------------------------------------------===//
 
 s_waitcnt 0

 
 s_waitcnt vmcnt(0), expcnt(0)
 // GCN: s_waitcnt vmcnt(0) expcnt(0) ; encoding: [0x00,0x0f,0x8c,0xbf]
 
 
 s_sethalt 9
 // GCN: s_sethalt 9 ; encoding: [0x09,0x00,0x8d,0xbf]
 
+s_setkill 7
+// GCN: s_setkill 7 ; encoding: [0x07,0x00,0x8b,0xbf]
+
 s_sleep 10
 // GCN: s_sleep 10 ; encoding: [0x0a,0x00,0x8e,0xbf]
 
 s_setprio 1
 // GCN: s_setprio 1 ; encoding: [0x01,0x00,0x8f,0xbf]
 
 s_sendmsg 2
 // GCN: s_sendmsg 2 ; encoding: [0x02,0x00,0x90,0xbf]