[llvm] [SPIRV] Porting 4 tests from Translator (PR #151646)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-spir-v

Author: Ebin-McW (EbinJose2002)

<details>
<summary>Changes</summary>

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

---
Full diff: https://github.com/llvm/llvm-project/pull/151646.diff


4 Files Affected:

- (added) llvm/test/CodeGen/SPIRV/FCmpFalse_Vec.ll (+13) 
- (added) llvm/test/CodeGen/SPIRV/builtin_duplicate.ll (+20) 
- (added) llvm/test/CodeGen/SPIRV/complex-constexpr.ll (+21) 
- (added) llvm/test/CodeGen/SPIRV/dominator-order.ll (+25) 


``````````diff
diff --git a/llvm/test/CodeGen/SPIRV/FCmpFalse_Vec.ll b/llvm/test/CodeGen/SPIRV/FCmpFalse_Vec.ll
new file mode 100644
index 0000000000000..6e98878777d6b
--- /dev/null
+++ b/llvm/test/CodeGen/SPIRV/FCmpFalse_Vec.ll
@@ -0,0 +1,13 @@
+; RUN: llc -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
+}
diff --git a/llvm/test/CodeGen/SPIRV/builtin_duplicate.ll b/llvm/test/CodeGen/SPIRV/builtin_duplicate.ll
new file mode 100644
index 0000000000000..69ba1b0fe15f8
--- /dev/null
+++ b/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 -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"
+
+ at __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
+}
diff --git a/llvm/test/CodeGen/SPIRV/complex-constexpr.ll b/llvm/test/CodeGen/SPIRV/complex-constexpr.ll
new file mode 100644
index 0000000000000..2aea80927c278
--- /dev/null
+++ b/llvm/test/CodeGen/SPIRV/complex-constexpr.ll
@@ -0,0 +1,21 @@
+; RUN: llc -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 %}
+
+ at .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
+}
diff --git a/llvm/test/CodeGen/SPIRV/dominator-order.ll b/llvm/test/CodeGen/SPIRV/dominator-order.ll
new file mode 100644
index 0000000000000..d303ae5ef8363
--- /dev/null
+++ b/llvm/test/CodeGen/SPIRV/dominator-order.ll
@@ -0,0 +1,25 @@
+; RUN: llc -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) {
+entry:
+  br label %for.body
+
+for.body137.lr.ph:                                ; preds = %for.body
+  ret void
+
+for.body:                                         ; preds = %for.body, %entry
+  br i1 undef, label %for.body, label %for.body137.lr.ph
+}

``````````

</details>


https://github.com/llvm/llvm-project/pull/151646