[AMDGPU][GlobalISel] Add RegBankLegalize support for G_FENCE (#165939)

Author: vangthao95

llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp

@@ -913,6 +913,8 @@ RegBankLegalizeRules::RegBankLegalizeRules(const GCNSubtarget &_ST,
 
   addRulesForGOpcs({G_ABS}, Standard).Uni(S16, {{Sgpr32Trunc}, {Sgpr32SExt}});
 
+  addRulesForGOpcs({G_FENCE}).Any({{{}}, {{}, {}}});
+
   addRulesForGOpcs({G_READSTEADYCOUNTER, G_READCYCLECOUNTER}, Standard)
       .Uni(S64, {{Sgpr64}, {}});
 

llvm/test/CodeGen/AMDGPU/GlobalISel/memory-legalizer-atomic-fence.ll

@@ -1,11 +1,11 @@
 ; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd- -mcpu=gfx600 < %s | FileCheck -check-prefix=GFX6 %s
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd- -mcpu=gfx803 < %s | FileCheck -check-prefix=GFX8 %s
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx803 < %s | FileCheck -check-prefix=GFX8 %s
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1010 < %s | FileCheck -check-prefix=GFX10WGP %s
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1010 -mattr=+cumode < %s | FileCheck -check-prefix=GFX10CU %s
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 < %s | FileCheck -check-prefix=GFX11WGP %s
-; RUN: llc -global-isel -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 -mattr=+cumode < %s | FileCheck -check-prefix=GFX11CU %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd- -mcpu=gfx600 < %s | FileCheck -check-prefix=GFX6 %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd- -mcpu=gfx803 < %s | FileCheck -check-prefix=GFX8 %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx803 < %s | FileCheck -check-prefix=GFX8 %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1010 < %s | FileCheck -check-prefix=GFX10WGP %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1010 -mattr=+cumode < %s | FileCheck -check-prefix=GFX10CU %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 < %s | FileCheck -check-prefix=GFX11WGP %s
+; RUN: llc -global-isel -new-reg-bank-select -stop-after=si-memory-legalizer -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 -mattr=+cumode < %s | FileCheck -check-prefix=GFX11CU %s
 
 ; Note: we use MIR test checks + stop after legalizer to prevent
 ; tests from being optimized out.

llvm/test/CodeGen/AMDGPU/GlobalISel/mmra.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
-; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx900 -stop-after=finalize-isel < %s | FileCheck %s
+; RUN: llc -global-isel -new-reg-bank-select -mtriple=amdgcn -mcpu=gfx900 -stop-after=finalize-isel < %s | FileCheck %s
 
 declare void @readsMem(ptr) #0
 declare void @writesMem(ptr) #1