27905eeb89
The AAExecutionDomain instance checks if a BB is executed by the main thread only. Currently, this only checks the `__kmpc_kernel_init` call for generic regions to indicate the path taken by the main thread. In the new runtime, we want to be able to detect basic blocks even in SPMD mode. For this we enable it to check thread-ID intrinsics being compared to zero as well. Reviewed By: jdoerfert Differential Revision: https://reviews.llvm.org/D109849
129 lines
4.6 KiB
LLVM
129 lines
4.6 KiB
LLVM
; RUN: opt -passes=openmp-opt -debug-only=openmp-opt -disable-output < %s 2>&1 | FileCheck %s
|
|
; RUN: opt -passes=openmp-opt -pass-remarks-analysis=openmp-opt -disable-output < %s 2>&1 | FileCheck %s --check-prefix=REMARKS
|
|
; REQUIRES: asserts
|
|
; ModuleID = 'single_threaded_exeuction.c'
|
|
|
|
%struct.ident_t = type { i32, i32, i32, i32, i8* }
|
|
|
|
@0 = private unnamed_addr constant [1 x i8] c"\00", align 1
|
|
@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
|
|
|
|
|
|
; CHECK-NOT: [openmp-opt] Basic block @kernel entry is executed by a single thread.
|
|
; CHECK: [openmp-opt] Basic block @kernel if.then is executed by a single thread.
|
|
; CHECK-NOT: [openmp-opt] Basic block @kernel if.else is executed by a single thread.
|
|
; CHECK-NOT: [openmp-opt] Basic block @kernel if.end is executed by a single thread.
|
|
define void @kernel() {
|
|
%call = call i32 @__kmpc_target_init(%struct.ident_t* nonnull @1, i1 false, i1 false, i1 false)
|
|
%cmp = icmp eq i32 %call, -1
|
|
br i1 %cmp, label %if.then, label %if.else
|
|
if.then:
|
|
br label %if.end
|
|
if.else:
|
|
br label %if.end
|
|
if.end:
|
|
call void @__kmpc_target_deinit(%struct.ident_t* null, i1 false, i1 true)
|
|
ret void
|
|
}
|
|
|
|
; REMARKS: remark: single_threaded_execution.c:1:0: Could not internalize function. Some optimizations may not be possible.
|
|
; REMARKS-NOT: remark: single_threaded_execution.c:1:0: Could not internalize function. Some optimizations may not be possible.
|
|
|
|
; CHECK-NOT: [openmp-opt] Basic block @nvptx entry is executed by a single thread.
|
|
; CHECK-DAG: [openmp-opt] Basic block @nvptx if.then is executed by a single thread.
|
|
; CHECK-NOT: [openmp-opt] Basic block @nvptx if.end is executed by a single thread.
|
|
; Function Attrs: noinline
|
|
define void @nvptx() {
|
|
entry:
|
|
%call = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
|
|
%cmp = icmp eq i32 %call, 0
|
|
br i1 %cmp, label %if.then, label %if.end
|
|
|
|
if.then:
|
|
call void @foo()
|
|
call void @bar()
|
|
call void @baz()
|
|
call void @cold()
|
|
br label %if.end
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-NOT: [openmp-opt] Basic block @amdgcn entry is executed by a single thread.
|
|
; CHECK-DAG: [openmp-opt] Basic block @amdgcn if.then is executed by a single thread.
|
|
; CHECK-NOT: [openmp-opt] Basic block @amdgcn if.end is executed by a single thread.
|
|
; Function Attrs: noinline
|
|
define void @amdgcn() {
|
|
entry:
|
|
%call = call i32 @llvm.amdgcn.workitem.id.x()
|
|
%cmp = icmp eq i32 %call, 0
|
|
br i1 %cmp, label %if.then, label %if.end
|
|
|
|
if.then:
|
|
call void @foo()
|
|
call void @bar()
|
|
call void @baz()
|
|
call void @cold()
|
|
br label %if.end
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: [openmp-opt] Basic block @foo entry is executed by a single thread.
|
|
; Function Attrs: noinline
|
|
define internal void @foo() {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: [openmp-opt] Basic block @bar.internalized entry is executed by a single thread.
|
|
; Function Attrs: noinline
|
|
define void @bar() {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-NOT: [openmp-opt] Basic block @baz entry is executed by a single thread.
|
|
; Function Attrs: noinline
|
|
define weak void @baz() !dbg !8 {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-NOT: [openmp-opt] Basic block @cold entry is executed by a single thread.
|
|
; Function Attrs: cold convergent noinline nounwind optnone mustprogress
|
|
define weak void @cold() #0 !dbg !9 {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
declare i32 @llvm.nvvm.read.ptx.sreg.tid.x()
|
|
|
|
declare i32 @llvm.amdgcn.workitem.id.x()
|
|
|
|
declare void @__kmpc_kernel_prepare_parallel(i8*)
|
|
|
|
declare i32 @__kmpc_target_init(%struct.ident_t*, i1, i1, i1)
|
|
|
|
declare void @__kmpc_target_deinit(%struct.ident_t*, i1, i1)
|
|
|
|
attributes #0 = { cold noinline }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5, !6}
|
|
!nvvm.annotations = !{!7}
|
|
|
|
!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)
|
|
!1 = !DIFile(filename: "single_threaded_execution.c", directory: "/tmp/single_threaded_execution.c")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!4 = !{i32 1, !"wchar_size", i32 4}
|
|
!5 = !{i32 7, !"openmp", i32 50}
|
|
!6 = !{i32 7, !"openmp-device", i32 50}
|
|
!7 = !{void ()* @kernel, !"kernel", i32 1}
|
|
!8 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 8, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
|
|
!9 = distinct !DISubprogram(name: "cold", scope: !1, file: !1, line: 8, type: !10, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
|
|
!10 = !DISubroutineType(types: !2)
|