Add llvm.ctpop* intrinsic translation

Add llvm.ctpop.* translation to BitCount instruction
Add test for this

Signed-off-by: amochalo <anastasiya.mochalova@intel.com>

Author: MochalovaAn

llvm-spirv/lib/SPIRV/SPIRVWriter.cpp

@@ -1964,6 +1964,7 @@ bool LLVMToSPIRV::isKnownIntrinsic(Intrinsic::ID Id) {
   case Intrinsic::fabs:
   case Intrinsic::abs:
   case Intrinsic::ceil:
+  case Intrinsic::ctpop:
   case Intrinsic::ctlz:
   case Intrinsic::cttz:
   case Intrinsic::expect:
@@ -2097,6 +2098,10 @@ SPIRVValue *LLVMToSPIRV::transIntrinsicInst(IntrinsicInst *II,
     return BM->addExtInst(STy, BM->getExtInstSetId(SPIRVEIS_OpenCL), ExtOp, Ops,
                           BB);
   }
+  case Intrinsic::ctpop: {
+    return BM->addUnaryInst(OpBitCount, transType(II->getType()),
+                            transValue(II->getArgOperand(0), BB), BB);
+  }
   case Intrinsic::ctlz:
   case Intrinsic::cttz: {
     SPIRVWord ExtOp = II->getIntrinsicID() == Intrinsic::ctlz ? OpenCLLIB::Clz

llvm-spirv/test/ctpop.ll

@@ -0,0 +1,55 @@
+; RUN: llvm-as %s -o %t.bc
+; RUN: llvm-spirv %t.bc -spirv-text -o - | FileCheck %s
+; RUN: llvm-spirv %t.bc -o %t.spv
+; RUN: spirv-val %t.spv
+
+
+; CHECK: BitCount {{[0-9]+}} {{[0-9]+}} {{[0-9]+}}
+; CHECK: BitCount {{[0-9]+}} {{[0-9]+}} {{[0-9]+}}
+; CHECK: BitCount {{[0-9]+}} {{[0-9]+}} {{[0-9]+}}
+; CHECK: BitCount {{[0-9]+}} {{[0-9]+}} {{[0-9]+}}
+; CHECK: BitCount {{[0-9]+}} {{[0-9]+}} {{[0-9]+}}
+
+target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-n8:16:32:64"
+target triple = "spir64-unknown-linux-sycldevice"
+
+; Function Attrs: norecurse nounwind readnone
+define dso_local spir_kernel void @test(i8 %x8, i16 %x16, i32 %x32, i64 %x64, <2 x i32> %x2i32) local_unnamed_addr #0 !kernel_arg_buffer_location !5 {
+entry:
+  %0 = tail call i8 @llvm.ctpop.i8(i8 %x8) #2
+  %1 = tail call i16 @llvm.ctpop.i16(i16 %x16) #2
+  %2 = tail call i32 @llvm.ctpop.i32(i32 %x32) #2
+  %3 = tail call i64 @llvm.ctpop.i64(i64 %x64) #2
+  %4 = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x2i32) #2
+  ret void
+}
+
+; Function Attrs: inaccessiblememonly nounwind willreturn
+declare i8 @llvm.ctpop.i8(i8  ) #1
+
+; Function Attrs: inaccessiblememonly nounwind willreturn
+declare i16 @llvm.ctpop.i16(i16 ) #1
+
+; Function Attrs: inaccessiblememonly nounwind willreturn
+declare i32 @llvm.ctpop.i32(i32 ) #1
+
+; Function Attrs: inaccessiblememonly nounwind willreturn
+declare i64 @llvm.ctpop.i64(i64 ) #1
+
+; Function Attrs: inaccessiblememonly nounwind willreturn
+declare <2 x i32> @llvm.ctpop.v2i32(<2 x i32> ) #1
+
+attributes #0 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "sycl-module-id"="test.cl" "uniform-work-group-size"="true" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!opencl.ocl.version = !{!1}
+!opencl.spir.version = !{!2, !2}
+!spirv.Source = !{!3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 1, i32 0}
+!2 = !{i32 1, i32 2}
+!3 = !{i32 4, i32 100000}
+!4 = !{!"clang version 12.0.0 (https://github.com/c199914007/llvm.git 0051629b5f4d81af1b049da17bce0b00f03998f8)"}
+!5 = !{i32 -1}