[PATCH] D134679: [Clang][AArch64][SME] Add intrinsics for reading streaming vector length

[Bryan Chan via Phabricator via cfe-commits]

bryanpkc updated this revision to Diff 526379.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D134679/new/

https://reviews.llvm.org/D134679

Files:
  clang/include/clang/Basic/arm_sme.td
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_cnt.c


Index: clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_cnt.c
===================================================================
--- /dev/null
+++ clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_cnt.c
@@ -0,0 +1,46 @@
+// REQUIRES: aarch64-registered-target
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sme -target-feature +sve -S -O1 -Werror -emit-llvm -o - %s | FileCheck %s -check-prefixes=CHECK,CHECK-C
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sme -target-feature +sve -S -O1 -Werror -emit-llvm -o - -x c++ %s | FileCheck %s -check-prefixes=CHECK,CHECK-CXX
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sme -target-feature +sve -S -O1 -Werror -o /dev/null %s
+
+#include <arm_sme_draft_spec_subject_to_change.h>
+
+// CHECK-C-LABEL: @test_svcntsb(
+// CHECK-CXX-LABEL: @_Z12test_svcntsbv(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.aarch64.sme.cntsb()
+// CHECK-NEXT:    ret i64 [[TMP0]]
+//
+uint64_t test_svcntsb() {
+  return svcntsb();
+}
+
+// CHECK-C-LABEL: @test_svcntsh(
+// CHECK-CXX-LABEL: @_Z12test_svcntshv(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.aarch64.sme.cntsh()
+// CHECK-NEXT:    ret i64 [[TMP0]]
+//
+uint64_t test_svcntsh() {
+  return svcntsh();
+}
+
+// CHECK-C-LABEL: @test_svcntsw(
+// CHECK-CXX-LABEL: @_Z12test_svcntswv(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.aarch64.sme.cntsw()
+// CHECK-NEXT:    ret i64 [[TMP0]]
+//
+uint64_t test_svcntsw() {
+  return svcntsw();
+}
+
+// CHECK-C-LABEL: @test_svcntsd(
+// CHECK-CXX-LABEL: @_Z12test_svcntsdv(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.aarch64.sme.cntsd()
+// CHECK-NEXT:    ret i64 [[TMP0]]
+//
+uint64_t test_svcntsd() {
+  return svcntsd();
+}
Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -9923,6 +9923,7 @@
   getContext().GetBuiltinType(BuiltinID, Error, &ICEArguments);
   assert(Error == ASTContext::GE_None && "Should not codegen an error");
 
+  llvm::Type *Ty = ConvertType(E->getType());
   llvm::SmallVector<Value *, 4> Ops;
   for (unsigned i = 0, e = E->getNumArgs(); i != e; i++) {
     if ((ICEArguments & (1 << i)) == 0)
@@ -9953,6 +9954,12 @@
     return EmitSMEZero(TypeFlags, Ops, Builtin->LLVMIntrinsic);
   else if (TypeFlags.isLoadReg() || TypeFlags.isStoreReg())
     return EmitSMELdrStr(TypeFlags, Ops, Builtin->LLVMIntrinsic);
+  else if (Builtin->LLVMIntrinsic != 0) {
+    Function *F = CGM.getIntrinsic(Builtin->LLVMIntrinsic,
+                                   getSVEOverloadTypes(TypeFlags, Ty, Ops));
+    Value *Call = Builder.CreateCall(F, Ops);
+    return Call;
+  }
 
   /// Should not happen
   return nullptr;
Index: clang/include/clang/Basic/arm_sme.td
===================================================================
--- clang/include/clang/Basic/arm_sme.td
+++ clang/include/clang/Basic/arm_sme.td
@@ -135,3 +135,19 @@
   def SVZERO_ZA      : SInst<"svzero_za", "v", "", MergeNone, "aarch64_sme_zero",
                              [IsZero, IsOverloadNone, IsStreamingCompatible, IsSharedZA]>;
 }
+
+////////////////////////////////////////////////////////////////////////////////
+// SME - Counting elements in a streaming vector
+
+multiclass ZACount<string n_suffix> {
+  let TargetGuard = "sme" in {
+    def NAME : SInst<"sv" # n_suffix, "nv", "", MergeNone,
+                      "aarch64_sme_" # n_suffix,
+                      [IsOverloadNone, IsStreamingCompatible, IsPreservesZA]>;
+  }
+}
+
+defm SVCNTSB : ZACount<"cntsb">;
+defm SVCNTSH : ZACount<"cntsh">;
+defm SVCNTSW : ZACount<"cntsw">;
+defm SVCNTSD : ZACount<"cntsd">;


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