Porting 4 tests from Translator covering:

 - Lowering of fcmp false in llvm IR
 - Handling duplicate builtins
 - Pointer conversion and address space cast
 - Dominator ordering

Author: EbinJose2002

llvm/test/CodeGen/SPIRV/FCmpFalse_Vec.ll

@@ -0,0 +1,13 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; CHECK: %[[#BoolTy:]] = OpTypeBool
+; CHECK: %[[#VecTy:]] = OpTypeVector %[[#BoolTy]] 4
+; CHECK: %[[#False:]] = OpConstantFalse %[[#BoolTy]]
+; CHECK: %[[#Composite:]] = OpConstantComposite %[[#VecTy]] %[[#False]] %[[#False]] %[[#False]] %[[#False]]
+; CHECK: OpReturnValue %[[#Composite]]
+
+define spir_func <4 x i1> @f(<4 x float> %0) {
+ %2 = fcmp false <4 x float> %0, %0
+ ret <4 x i1> %2
+}

llvm/test/CodeGen/SPIRV/builtin_duplicate.ll

@@ -0,0 +1,20 @@
+;; This test checks if we generate a single builtin variable for the following
+;; LLVM IR.
+;; @__spirv_BuiltInLocalInvocationId - A global variable
+;; %3 = tail call i64 @_Z12get_local_idj(i32 0) - A function call
+
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; CHECK: OpName %[[#]] "__spirv_BuiltInLocalInvocationId"
+; CHECK-NOT: OpName %[[#]] "__spirv_BuiltInLocalInvocationId.1"
+
+@__spirv_BuiltInLocalInvocationId = external dso_local local_unnamed_addr addrspace(1) constant <3 x i64>, align 32
+
+declare spir_func i64 @_Z12get_local_idj(i32) local_unnamed_addr
+
+define spir_kernel void @test_fn(i32 %a) {
+entry:
+  %3 = tail call i64 @_Z12get_local_idj(i32 0)
+  ret void
+}

llvm/test/CodeGen/SPIRV/complex-constexpr.ll

@@ -0,0 +1,21 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+@.str.1 = private unnamed_addr addrspace(1) constant [1 x i8] zeroinitializer, align 1
+
+define linkonce_odr hidden spir_func void @foo() {
+entry:
+; CHECK: %[[#MinusOne:]] = OpConstant %[[#]] 18446744073709551615
+; CHECK: %[[#Ptr:]] = OpConvertUToPtr %[[#]]  %[[#MinusOne]]
+; CHECK: %[[#PtrCast:]] = OpPtrCastToGeneric %[[#]] %[[#]]
+; CHECK: %[[#]] = OpFunctionCall %[[#]] %[[#]] %[[#PtrCast]] %[[#Ptr]]
+
+  %0 = bitcast ptr addrspace(4) inttoptr (i64 -1 to ptr addrspace(4)) to ptr addrspace(4)
+  call spir_func void @bar(ptr addrspace(4) addrspacecast (ptr addrspace(1) @.str.1 to ptr addrspace(4)), ptr addrspace(4) %0)
+  ret void
+}
+
+define linkonce_odr hidden spir_func void @bar(ptr addrspace(4) %__beg, ptr addrspace(4) %__end) {
+entry:
+  ret void
+}

llvm/test/CodeGen/SPIRV/dominator-order.ll

@@ -0,0 +1,25 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; This test checks that basic blocks are reordered in SPIR-V so that dominators
+; are emitted ahead of their dominated blocks as required by the SPIR-V
+; specification.
+
+; CHECK-DAG: OpName %[[#ENTRY:]] "entry"
+; CHECK-DAG: OpName %[[#FOR_BODY137_LR_PH:]] "for.body137.lr.ph"
+; CHECK-DAG: OpName %[[#FOR_BODY:]] "for.body"
+
+; CHECK: %[[#ENTRY]] = OpLabel
+; CHECK: %[[#FOR_BODY]] = OpLabel
+; CHECK: %[[#FOR_BODY137_LR_PH]] = OpLabel
+
+define spir_kernel void @test(ptr addrspace(1) %arg, i1 %cond) {
+entry:
+  br label %for.body
+
+for.body137.lr.ph:                                ; preds = %for.body
+  ret void
+
+for.body:                                         ; preds = %for.body, %entry
+  br i1 %cond, label %for.body, label %for.body137.lr.ph
+}