[llvm] 2e7e9c1 - AMDGPU/GlobalISel: RegBankLegalize rules for load_to_lds intrinsic (#203282)

[via llvm-commits]

Author: Petar Avramovic
Date: 2026-06-12T11:02:34+02:00
New Revision: 2e7e9c112d320d1ad032a14621c68b6b5c69a519

URL: https://github.com/llvm/llvm-project/commit/2e7e9c112d320d1ad032a14621c68b6b5c69a519
DIFF: https://github.com/llvm/llvm-project/commit/2e7e9c112d320d1ad032a14621c68b6b5c69a519.diff

LOG: AMDGPU/GlobalISel: RegBankLegalize rules for load_to_lds intrinsic (#203282)

Added: 
    

Modified: 
    llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp
    llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.gfx950.ll
    llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.ll
    llvm/test/CodeGen/AMDGPU/memory-legalizer-lds-dma-volatile-and-nontemporal.ll

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp
index 3b935e75d0dca..3c4c1674d37a8 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp
@@ -2214,7 +2214,7 @@ RegBankLegalizeRules::RegBankLegalizeRules(const GCNSubtarget &_ST,
   addRulesForIOpcs({amdgcn_struct_ptr_buffer_load_lds})
       .Any({{_}, {{}, {IntrId, SgprP8, SgprP3, Imm, Vgpr32, Vgpr32, Sgpr32}}});
 
-  addRulesForIOpcs({amdgcn_global_load_lds})
+  addRulesForIOpcs({amdgcn_global_load_lds, amdgcn_load_to_lds})
       .Any({{}, {{}, {IntrId, VgprP1, SgprB32_M0}}});
 
   addRulesForIOpcs({amdgcn_global_load_async_to_lds_b8,

diff  --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.gfx950.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.gfx950.ll
index b45dd459f262e..4eb16dfebf86d 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.gfx950.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.gfx950.ll
@@ -1,9 +1,9 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
 ; RUN: llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx950 < %s | FileCheck -check-prefix=GFX950-SDAG %s
-; RUN: llc -global-isel=1 -mtriple=amdgcn -mcpu=gfx950 < %s | FileCheck -check-prefix=GFX950-GISEL %s
+; RUN: llc -global-isel=1 -new-reg-bank-select -mtriple=amdgcn -mcpu=gfx950 < %s | FileCheck -check-prefix=GFX950-GISEL %s
 
 ; RUN: not --crash llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx942 -filetype=null < %s 2>&1 | FileCheck -check-prefix=ERR-SDAG %s
-; RUN: not llc -global-isel=1 -mtriple=amdgcn -mcpu=gfx942 -filetype=null < %s 2>&1 | FileCheck -check-prefix=ERR-GISEL %s
+; RUN: not llc -global-isel=1 -new-reg-bank-select -mtriple=amdgcn -mcpu=gfx942 -filetype=null < %s 2>&1 | FileCheck -check-prefix=ERR-GISEL %s
 
 ; ERR-SDAG: LLVM ERROR: Cannot select: intrinsic %llvm.amdgcn.load.to.lds
 

diff  --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.ll
index f1425db821fdc..1acbda98a9abf 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.load.to.lds.ll
@@ -3,7 +3,7 @@
 ; RUN: llc -mtriple=amdgcn -mcpu=gfx90a < %s | FileCheck %s --check-prefix=GFX90A
 ; RUN: llc -mtriple=amdgcn -mcpu=gfx942 < %s | FileCheck %s --check-prefix=GFX942
 ; RUN: llc -mtriple=amdgcn -mcpu=gfx1010 < %s | FileCheck %s --check-prefix=GFX10
-; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx942 < %s | FileCheck %s --check-prefix=GFX942-GISEL
+; RUN: llc -global-isel -new-reg-bank-select -mtriple=amdgcn -mcpu=gfx942 < %s | FileCheck %s --check-prefix=GFX942-GISEL
 
 ;; Note: load.to.lds is a wrapper intrinsic around underlying operations.
 ;; This is a bare-bones test to ensure that it lowers to the correct instructions.

diff  --git a/llvm/test/CodeGen/AMDGPU/memory-legalizer-lds-dma-volatile-and-nontemporal.ll b/llvm/test/CodeGen/AMDGPU/memory-legalizer-lds-dma-volatile-and-nontemporal.ll
index 14d2e4ca5f2c3..e58d4f9d3c3f6 100644
--- a/llvm/test/CodeGen/AMDGPU/memory-legalizer-lds-dma-volatile-and-nontemporal.ll
+++ b/llvm/test/CodeGen/AMDGPU/memory-legalizer-lds-dma-volatile-and-nontemporal.ll
@@ -1,7 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
 ; RUN: llc -mtriple=amdgcn-- -mcpu=gfx90a -global-isel=0 < %s | FileCheck --check-prefixes=GFX90A %s
 ; RUN: llc -mtriple=amdgcn-- -mcpu=gfx942 -global-isel=0 < %s | FileCheck --check-prefixes=GFX942 %s
-; RUN: llc -mtriple=amdgcn-- -mcpu=gfx942 -global-isel=1 < %s | FileCheck --check-prefixes=GFX942-GISEL %s
+; RUN: llc -mtriple=amdgcn-- -mcpu=gfx942 -global-isel=1 -new-reg-bank-select < %s | FileCheck --check-prefixes=GFX942-GISEL %s
 ; RUN: llc -mtriple=amdgcn-- -mcpu=gfx1010 -global-isel=0 < %s | FileCheck --check-prefixes=GFX10 %s
 
 define amdgpu_ps void @global_load_lds_dword_volatile(ptr addrspace(1) inreg %gptr, i64 %off, ptr addrspace(3) inreg %lptr) {