[PATCH] D143706: [AMDGPU] Add switch to enable architected SGPRs.

[Christudasan Devadasan via Phabricator via llvm-commits]

cdevadas created this revision.
cdevadas added reviewers: rampitec, foad.
Herald added subscribers: kosarev, StephenFan, kerbowa, hiraditya, tpr, dstuttard, yaxunl, jvesely, kzhuravl, arsenm.
Herald added a project: All.
cdevadas requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D143706

Files:
  llvm/lib/Target/AMDGPU/AMDGPU.td
  llvm/lib/Target/AMDGPU/GCNSubtarget.h


Index: llvm/lib/Target/AMDGPU/GCNSubtarget.h
===================================================================
--- llvm/lib/Target/AMDGPU/GCNSubtarget.h
+++ llvm/lib/Target/AMDGPU/GCNSubtarget.h
@@ -175,6 +175,7 @@
   bool ScalarFlatScratchInsts = false;
   bool HasArchitectedFlatScratch = false;
   bool EnableFlatScratch = false;
+  bool HasArchitectedSGPRs = false;
   bool AddNoCarryInsts = false;
   bool HasUnpackedD16VMem = false;
   bool LDSMisalignedBug = false;
@@ -1132,6 +1133,9 @@
   /// In this case it is readonly.
   bool flatScratchIsArchitected() const { return HasArchitectedFlatScratch; }
 
+  /// \returns true if the architected SGPRs are enabled.
+  bool hasArchitectedSGPRs() const { return HasArchitectedSGPRs; }
+
   /// \returns true if the machine has merged shaders in which s0-s7 are
   /// reserved by the hardware and user SGPRs start at s8
   bool hasMergedShaders() const {
Index: llvm/lib/Target/AMDGPU/AMDGPU.td
===================================================================
--- llvm/lib/Target/AMDGPU/AMDGPU.td
+++ llvm/lib/Target/AMDGPU/AMDGPU.td
@@ -866,6 +866,12 @@
   "Flat Scratch register is a readonly SPI initialized architected register"
 >;
 
+def FeatureArchitectedSGPRs : SubtargetFeature<"architected-sgprs",
+  "HasArchitectedSGPRs",
+  "true",
+  "Enable the architected SGPRs"
+>;
+
 // Dummy feature used to disable assembler instructions.
 def FeatureDisable : SubtargetFeature<"",
   "FeatureDisable","true",


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