Add tests for implementations of SPV_INTEL_vector_compute,

SPV_INTEL_float_controls2 and SPV_KHR_float_controls extensions

Extensions are published at intel/llvm#1612
                            intel/llvm#1611

Author: NikitaRudenkoIntel

test/transcoding/decoration_byte_offset.ll

@@ -0,0 +1,36 @@
+; RUN: llvm-as %s -o %t.bc
+; RUN: llvm-spirv %t.bc -o %t.spv --spirv-ext=+SPV_INTEL_vector_compute --spirv-allow-unknown-intrinsics
+; RUN: llvm-spirv %t.spv -o %t.spt --to-text
+; RUN: llvm-spirv -r %t.spv -o %t.bc
+; RUN: llvm-dis %t.bc -o %t.ll
+; RUN: FileCheck %s --input-file %t.spt -check-prefix=SPV
+; RUN: FileCheck %s --input-file %t.ll  -check-prefix=LLVM
+
+; ModuleID = 'slm.bc'
+source_filename = "slm.cpp"
+target datalayout = "e-p:64:64-i64:64-n8:16:32"
+target triple = "spir"
+
+; LLVM-DAG: @in = internal global{{[^#]*}}#[[K_RTE:[0-9]+]]
+; LLVM-DAG: attributes #[[K_RTE]]{{.*"VCByteOffset"="1" }}
+; SPV-DAG: Name [[IN:[0-9]+]] "in"
+; SPV-DAG: Decorate [[IN]] GlobalVariableOffsetINTEL 1
+
+@in = internal global <256 x i8> undef, align 256 #0
+declare <256 x i8> @llvm.genx.vload(<256 x i8>* nonnull %aaa)
+
+; Function Attrs: noinline norecurse nounwind readnone
+define dso_local dllexport spir_kernel void @k_rte(i32 %ibuf, i32 %obuf) local_unnamed_addr #1 {
+entry:
+  %gload53 = tail call <256 x i8> @llvm.genx.vload(<256 x i8>* nonnull @in)
+  ret void
+}
+
+attributes #0 = { "VCByteOffset"="1" "VCVolatile" "VCGlobalVariable" }
+attributes #1 = { noinline norecurse nounwind readnone "VCMain" "VCFunction" "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 8.0.1"}

test/transcoding/decoration_volatile.ll

@@ -0,0 +1,36 @@
+; RUN: llvm-as %s -o %t.bc
+; RUN: llvm-spirv %t.bc -o %t.spv --spirv-ext=+SPV_INTEL_vector_compute --spirv-allow-unknown-intrinsics
+; RUN: llvm-spirv %t.spv -o %t.spt --to-text
+; RUN: llvm-spirv -r %t.spv -o %t.bc
+; RUN: llvm-dis %t.bc -o %t.ll
+; RUN: FileCheck %s --input-file %t.spt -check-prefix=SPV
+; RUN: FileCheck %s --input-file %t.ll  -check-prefix=LLVM
+
+; ModuleID = 'slm.bc'
+source_filename = "slm.cpp"
+target datalayout = "e-p:64:64-i64:64-n8:16:32"
+target triple = "spir"
+
+; LLVM-DAG: @in = internal global{{[^#]*}}#[[K_RTE:[0-9]+]]
+; LLVM-DAG: attributes #[[K_RTE]]{{.*"VCVolatile" }}
+; SPV-DAG: Name [[IN:[0-9]+]] "in"
+; SPV-DAG: Decorate [[IN]] Volatile
+
+@in = internal global <256 x i8> undef, align 256 #0
+declare <256 x i8> @llvm.genx.vload(<256 x i8>* nonnull %aaa)
+
+; Function Attrs: noinline norecurse nounwind readnone
+define dso_local dllexport spir_kernel void @k_rte(i32 %ibuf, i32 %obuf) local_unnamed_addr #1 {
+entry:
+  %gload53 = tail call <256 x i8> @llvm.genx.vload(<256 x i8>* nonnull @in)
+  ret void
+}
+
+attributes #0 = { "VCByteOffset"="0" "VCVolatile" "VCGlobalVariable" }
+attributes #1 = { noinline norecurse nounwind readnone "VCFunction" "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 8.0.1"}

test/transcoding/exec_mode_argument_io_kind.ll

@@ -0,0 +1,32 @@
+; RUN: llvm-as %s -o %t.bc
+; RUN: llvm-spirv %t.bc -o %t.spv --spirv-ext=+SPV_INTEL_vector_compute
+; RUN: llvm-spirv %t.spv -o %t.spt --to-text
+; RUN: llvm-spirv -r %t.spv -o %t.bc
+; RUN: llvm-dis %t.bc -o %t.ll
+; RUN: FileCheck %s --input-file %t.spt -check-prefix=SPV
+; RUN: FileCheck %s --input-file %t.ll  -check-prefix=LLVM
+
+; ModuleID = 'slm.bc'
+source_filename = "slm.cpp"
+target datalayout = "e-p:64:64-i64:64-n8:16:32"
+target triple = "spir"
+
+; LLVM: @k_rte(i32 "VCArgumentIOKind"="0" %ibuf, i32 "VCArgumentIOKind"="1" %obuf)
+; SPV: Name [[IBUF:[0-9]+]] "ibuf"
+; SPV: Name [[OBUF:[0-9]+]] "obuf"
+; SPV: Decorate [[IBUF]] FuncParamIOKind 0
+; SPV: Decorate [[OBUF]] FuncParamIOKind 1
+; Function Attrs: noinline norecurse nounwind readnone
+define dso_local dllexport spir_kernel void @k_rte(i32 "VCArgumentIOKind"="0" %ibuf, i32 "VCArgumentIOKind"="1" %obuf) local_unnamed_addr #1 {
+entry:
+  ret void
+}
+
+attributes #1 = { noinline norecurse nounwind readnone "VCFunction" "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+; Note
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 8.0.1"}