129 lines
4.5 KiB
LLVM
129 lines
4.5 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, i8* }
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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, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @0, i32 0, i32 0) }, align 8
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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 void @kernel() {
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%call = call i32 @__kmpc_target_init(%struct.ident_t* nonnull @1, i8 1, i1 false, i1 false)
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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(%struct.ident_t* null, i8 1, i1 true)
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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: [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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; 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(i8*)
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declare i32 @__kmpc_target_init(%struct.ident_t*, i8, i1, i1)
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declare void @__kmpc_target_deinit(%struct.ident_t*, i8, i1)
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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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!nvvm.annotations = !{!7}
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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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!7 = !{void ()* @kernel, !"kernel", i32 1}
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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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