AMDGPU: Don't allow s_barrier on gfx12 (#81317)

- s_barrier is not present on gfx12

Author: kzhuravl

llvm/lib/Target/AMDGPU/SOPInstructions.td

@@ -2620,7 +2620,8 @@ defm S_DECPERFLEVEL               : SOPP_Real_32_gfx11_gfx12<0x039>;
 defm S_TTRACEDATA                 : SOPP_Real_32_gfx11_gfx12<0x03a>;
 defm S_TTRACEDATA_IMM             : SOPP_Real_32_gfx11_gfx12<0x03b>;
 defm S_ICACHE_INV                 : SOPP_Real_32_gfx11_gfx12<0x03c>;
-defm S_BARRIER                    : SOPP_Real_32_gfx11_gfx12<0x03d>;
+
+defm S_BARRIER                    : SOPP_Real_32_gfx11<0x03d>;
 
 //===----------------------------------------------------------------------===//
 // SOPP - GFX1150, GFX12.

llvm/test/MC/AMDGPU/gfx12_asm_sopp.s

@@ -270,9 +270,6 @@ s_cbranch_execnz 0x0
 s_cbranch_execnz 0x1234
 // GFX12: s_cbranch_execnz 4660 ; encoding: [0x34,0x12,0xa6,0xbf]
 
-s_barrier
-// GFX12: s_barrier ; encoding: [0x00,0x00,0xbd,0xbf]
-
 s_setkill 0x0
 // GFX12: s_setkill 0 ; encoding: [0x00,0x00,0x81,0xbf]
 

llvm/test/MC/AMDGPU/gfx12_unsupported.s

@@ -106,6 +106,9 @@ s_cmpk_le_u32 s0, 0
 s_inst_prefetch 1
 // CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
 
+s_barrier
+// CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
 buffer_atomic_cmpswap_f32 v[5:6], off, s[96:99], s3
 // CHECK: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
 

llvm/test/MC/Disassembler/AMDGPU/gfx12_dasm_sopp.txt

@@ -78,9 +78,6 @@
 # GFX12: s_barrier_leave                         ; encoding: [0x00,0x00,0x95,0xbf]
 0x00,0x00,0x95,0xbf
 
-# GFX12: s_barrier                               ; encoding: [0x00,0x00,0xbd,0xbf]
-0x00,0x00,0xbd,0xbf
-
 # GFX12: s_branch 0                              ; encoding: [0x00,0x00,0xa0,0xbf]
 0x00,0x00,0xa0,0xbf