07ed8187ac
Specifying a kernel with the `ptx_kernel` or `amdgpu_kernel` calling convention is a more idiomatic and compile-time performant than using the `nvvm.annoation !"kernel"` metadata. Transition OMPIRBuilder to use calling conventions for PTX kernels and no longer emit `nvvm.annoation`. Update OpenMPOpt to work with kernels specified via calling convention as well as metadata. Update OpenMP tests to use the calling conventions.
130 lines
4.7 KiB
LLVM
130 lines
4.7 KiB
LLVM
; RUN: opt -passes=openmp-opt -debug-only=openmp-opt -disable-output < %s 2>&1 | FileCheck %s
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; RUN: opt -passes=openmp-opt -pass-remarks-analysis=openmp-opt -disable-output < %s 2>&1 | FileCheck %s --check-prefix=REMARKS
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; REQUIRES: asserts
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; ModuleID = 'single_threaded_exeuction.c'
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%struct.ident_t = type { i32, i32, i32, i32, ptr }
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%struct.KernelEnvironmentTy = type { %struct.ConfigurationEnvironmentTy, ptr, ptr }
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%struct.ConfigurationEnvironmentTy = type { i8, i8, i8, i32, i32, i32, i32, i32, i32 }
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@0 = private unnamed_addr constant [1 x i8] c"\00", align 1
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@1 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 0, i32 0, ptr @0 }, align 8
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@kernel_kernel_environment = local_unnamed_addr constant %struct.KernelEnvironmentTy { %struct.ConfigurationEnvironmentTy { i8 0, i8 0, i8 1, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0 }, ptr @1, ptr null }
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; CHECK-NOT: [openmp-opt] Basic block @kernel entry is executed by a single thread.
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; CHECK: [openmp-opt] Basic block @kernel if.then is executed by a single thread.
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; CHECK-NOT: [openmp-opt] Basic block @kernel if.else is executed by a single thread.
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; CHECK-NOT: [openmp-opt] Basic block @kernel if.end is executed by a single thread.
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define ptx_kernel void @kernel(ptr %dyn) "kernel" {
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%call = call i32 @__kmpc_target_init(ptr @kernel_kernel_environment, ptr %dyn)
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%cmp = icmp eq i32 %call, -1
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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br label %if.end
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if.else:
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br label %if.end
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if.end:
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call void @__kmpc_target_deinit()
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ret void
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}
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; CHECK: [openmp-opt] Basic block @foo entry is executed by a single thread.
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; Function Attrs: noinline
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define internal void @foo() {
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entry:
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ret void
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}
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; CHECK: [openmp-opt] Basic block @bar.internalized entry is executed by a single thread.
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; Function Attrs: noinline
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define void @bar() {
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entry:
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ret void
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}
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; REMARKS: remark: single_threaded_execution.c:1:0: Could not internalize function. Some optimizations may not be possible.
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; REMARKS-NOT: remark: single_threaded_execution.c:1:0: Could not internalize function. Some optimizations may not be possible.
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; CHECK-NOT: [openmp-opt] Basic block @nvptx entry is executed by a single thread.
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; CHECK-DAG: [openmp-opt] Basic block @nvptx if.then is executed by a single thread.
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; CHECK-NOT: [openmp-opt] Basic block @nvptx if.end is executed by a single thread.
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; Function Attrs: noinline
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define void @nvptx() {
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entry:
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%call = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
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%cmp = icmp eq i32 %call, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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call void @foo()
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call void @bar()
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call void @baz()
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call void @cold()
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br label %if.end
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if.end:
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ret void
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}
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; CHECK-NOT: [openmp-opt] Basic block @amdgcn entry is executed by a single thread.
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; CHECK-DAG: [openmp-opt] Basic block @amdgcn if.then is executed by a single thread.
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; CHECK-NOT: [openmp-opt] Basic block @amdgcn if.end is executed by a single thread.
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; Function Attrs: noinline
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define void @amdgcn() {
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entry:
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%call = call i32 @llvm.amdgcn.workitem.id.x()
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%cmp = icmp eq i32 %call, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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call void @foo()
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call void @bar()
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call void @baz()
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call void @cold()
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br label %if.end
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if.end:
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ret void
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}
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; CHECK-NOT: [openmp-opt] Basic block @baz entry is executed by a single thread.
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; Function Attrs: noinline
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define weak void @baz() !dbg !8 {
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entry:
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ret void
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}
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; CHECK-NOT: [openmp-opt] Basic block @cold entry is executed by a single thread.
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; Function Attrs: cold convergent noinline nounwind optnone mustprogress
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define weak void @cold() #0 !dbg !9 {
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entry:
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ret void
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}
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declare i32 @llvm.nvvm.read.ptx.sreg.tid.x()
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declare i32 @llvm.amdgcn.workitem.id.x()
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declare void @__kmpc_kernel_prepare_parallel(ptr)
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declare i32 @__kmpc_target_init(ptr, ptr)
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declare void @__kmpc_target_deinit()
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attributes #0 = { cold noinline }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "single_threaded_execution.c", directory: "/tmp/single_threaded_execution.c")
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!2 = !{}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 7, !"openmp", i32 50}
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!6 = !{i32 7, !"openmp-device", i32 50}
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!8 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 8, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!9 = distinct !DISubprogram(name: "cold", scope: !1, file: !1, line: 8, type: !10, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!10 = !DISubroutineType(types: !2)
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