[AMDGPU] New GFX12 aliases lds_direct_load and lds_param_load

[jayfoad]

This is for compatibility with SP3.

[llvmbot]

@llvm/pr-subscribers-mc

@llvm/pr-subscribers-backend-amdgpu

Author: Jay Foad (jayfoad)

Changes

This is for compatibility with SP3.

---

Full diff: https://github.com/llvm/llvm-project/pull/119205.diff

2 Files Affected:

• (modified) llvm/lib/Target/AMDGPU/DSDIRInstructions.td (+5)
• (added) llvm/test/MC/AMDGPU/gfx12_asm_vdsdir_alias.s (+8)

diff --git a/llvm/lib/Target/AMDGPU/DSDIRInstructions.td b/llvm/lib/Target/AMDGPU/DSDIRInstructions.td
index 0541f0f656327c..383e3371993d6f 100644
--- a/llvm/lib/Target/AMDGPU/DSDIRInstructions.td
+++ b/llvm/lib/Target/AMDGPU/DSDIRInstructions.td
@@ -193,3 +193,8 @@ multiclass DSDIR_Real_gfx12<bits<2> op> {
 
 defm DS_PARAM_LOAD : DSDIR_Real_gfx12<0x0>;
 defm DS_DIRECT_LOAD : DSDIR_Real_gfx12<0x1>;
+
+let SubtargetPredicate = isGFX12Plus in {
+  def : AMDGPUMnemonicAlias<"lds_param_load", "ds_param_load">;
+  def : AMDGPUMnemonicAlias<"lds_direct_load", "ds_direct_load">;
+}
diff --git a/llvm/test/MC/AMDGPU/gfx12_asm_vdsdir_alias.s b/llvm/test/MC/AMDGPU/gfx12_asm_vdsdir_alias.s
new file mode 100644
index 00000000000000..0d9993afa43e75
--- /dev/null
+++ b/llvm/test/MC/AMDGPU/gfx12_asm_vdsdir_alias.s
@@ -0,0 +1,8 @@
+// NOTE: Assertions have been autogenerated by utils/update_mc_test_checks.py UTC_ARGS: --version 5
+// RUN: llvm-mc -triple=amdgcn -mcpu=gfx1200 -show-encoding %s | FileCheck -check-prefix=GFX12 %s
+
+lds_direct_load v0
+// GFX12: ds_direct_load v0 wait_va_vdst:0 wait_vm_vsrc:0 ; encoding: [0x00,0x00,0x10,0xce]
+
+lds_param_load v0, attr0.x
+// GFX12: ds_param_load v0, attr0.x wait_va_vdst:0 wait_vm_vsrc:0 ; encoding: [0x00,0x00,0x00,0xce]