fec2927e07
This patch adds the `nosync` attribute to the `__kmpc_alloc_shared` and `__kmpc_free_shared` runtime library calls. This allows code analysis to know that these functins dont contain any barriers. This will help optimizations reason about the CFG of blocks containing these calls. Reviewed By: jdoerfert Differential Revision: https://reviews.llvm.org/D109995
218 lines
11 KiB
LLVM
218 lines
11 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-globals
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; RUN: opt -S -passes=openmp-opt < %s | FileCheck %s
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; RUN: opt -passes=openmp-opt -pass-remarks=openmp-opt -pass-remarks-missed=openmp-opt -disable-output < %s 2>&1 | FileCheck %s -check-prefix=CHECK-REMARKS
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; RUN: opt -openmp-opt-disable-deglobalization -S -passes=openmp-opt < %s | FileCheck %s --check-prefix=CHECK-DISABLED
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target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64"
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; CHECK-REMARKS: remark: remove_globalization.c:4:2: Could not move globalized variable to the stack. Variable is potentially captured in call. Mark parameter as `__attribute__((noescape))` to override.
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; CHECK-REMARKS: remark: remove_globalization.c:2:2: Moving globalized variable to the stack.
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; CHECK-REMARKS: remark: remove_globalization.c:6:2: Moving globalized variable to the stack.
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; CHECK-REMARKS: remark: remove_globalization.c:4:2: Found thread data sharing on the GPU. Expect degraded performance due to data globalization.
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@S = external local_unnamed_addr global i8*
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%struct.ident_t = type { i32, i32, i32, i32, i8* }
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declare i32 @__kmpc_target_init(%struct.ident_t*, i1, i1, i1)
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declare void @__kmpc_target_deinit(%struct.ident_t*, i1, i1)
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;.
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; CHECK: @[[S:[a-zA-Z0-9_$"\\.-]+]] = external local_unnamed_addr global i8*
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;.
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; CHECK-DISABLED: @[[S:[a-zA-Z0-9_$"\\.-]+]] = external local_unnamed_addr global i8*
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;.
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define void @kernel() {
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; CHECK-LABEL: define {{[^@]+}}@kernel() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* nonnull null, i1 false, i1 false, i1 true)
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; CHECK-NEXT: call void @foo() #[[ATTR4:[0-9]+]]
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; CHECK-NEXT: call void @bar() #[[ATTR4]]
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; CHECK-NEXT: call void @unknown_no_openmp()
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; CHECK-NEXT: call void @__kmpc_target_deinit(%struct.ident_t* nonnull null, i1 false, i1 true)
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; CHECK-NEXT: ret void
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;
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; CHECK-DISABLED-LABEL: define {{[^@]+}}@kernel() {
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; CHECK-DISABLED-NEXT: entry:
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; CHECK-DISABLED-NEXT: [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* nonnull null, i1 false, i1 false, i1 true)
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; CHECK-DISABLED-NEXT: call void @foo() #[[ATTR4:[0-9]+]]
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; CHECK-DISABLED-NEXT: call void @bar() #[[ATTR4]]
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; CHECK-DISABLED-NEXT: call void @unknown_no_openmp()
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; CHECK-DISABLED-NEXT: call void @__kmpc_target_deinit(%struct.ident_t* nonnull null, i1 false, i1 true)
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; CHECK-DISABLED-NEXT: ret void
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;
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entry:
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%0 = call i32 @__kmpc_target_init(%struct.ident_t* nonnull null, i1 false, i1 true, i1 true)
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call void @foo()
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call void @bar()
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call void @unknown_no_openmp()
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call void @__kmpc_target_deinit(%struct.ident_t* nonnull null, i1 false, i1 true)
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ret void
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}
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define internal void @foo() {
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; CHECK-LABEL: define {{[^@]+}}@foo
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; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = alloca i8, i64 4, align 1
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; CHECK-NEXT: ret void
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;
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; CHECK-DISABLED-LABEL: define {{[^@]+}}@foo
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; CHECK-DISABLED-SAME: () #[[ATTR0:[0-9]+]] {
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; CHECK-DISABLED-NEXT: entry:
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; CHECK-DISABLED-NEXT: [[TMP0:%.*]] = alloca i8, i64 4, align 1
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; CHECK-DISABLED-NEXT: ret void
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;
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entry:
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%0 = call i8* @__kmpc_alloc_shared(i64 4), !dbg !12
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call void @use(i8* %0)
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call void @__kmpc_free_shared(i8* %0, i64 4)
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ret void
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}
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define internal void @bar() {
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; CHECK-LABEL: define {{[^@]+}}@bar
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; CHECK-SAME: () #[[ATTR0]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = call i8* @__kmpc_alloc_shared(i64 noundef 4) #[[ATTR4]], !dbg [[DBG8:![0-9]+]]
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; CHECK-NEXT: call void @share(i8* nofree writeonly [[TMP0]]) #[[ATTR5:[0-9]+]]
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; CHECK-NEXT: call void @__kmpc_free_shared(i8* [[TMP0]], i64 noundef 4) #[[ATTR4]]
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; CHECK-NEXT: ret void
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;
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; CHECK-DISABLED-LABEL: define {{[^@]+}}@bar
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; CHECK-DISABLED-SAME: () #[[ATTR0]] {
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; CHECK-DISABLED-NEXT: entry:
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; CHECK-DISABLED-NEXT: [[TMP0:%.*]] = call i8* @__kmpc_alloc_shared(i64 noundef 4) #[[ATTR4]], !dbg [[DBG8:![0-9]+]]
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; CHECK-DISABLED-NEXT: call void @share(i8* nofree writeonly [[TMP0]]) #[[ATTR5:[0-9]+]]
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; CHECK-DISABLED-NEXT: call void @__kmpc_free_shared(i8* [[TMP0]], i64 noundef 4) #[[ATTR4]]
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; CHECK-DISABLED-NEXT: ret void
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;
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entry:
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%0 = call i8* @__kmpc_alloc_shared(i64 4), !dbg !13
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call void @share(i8* %0)
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call void @__kmpc_free_shared(i8* %0, i64 4)
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ret void
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}
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define internal void @use(i8* %x) {
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; CHECK-LABEL: define {{[^@]+}}@use
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; CHECK-SAME: (i8* noalias nocapture nofree readnone [[X:%.*]]) #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret void
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;
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; CHECK-DISABLED-LABEL: define {{[^@]+}}@use
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; CHECK-DISABLED-SAME: (i8* noalias nocapture nofree readnone [[X:%.*]]) #[[ATTR1:[0-9]+]] {
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; CHECK-DISABLED-NEXT: entry:
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; CHECK-DISABLED-NEXT: ret void
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;
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entry:
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ret void
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}
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define internal void @share(i8* %x) {
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; CHECK-LABEL: define {{[^@]+}}@share
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; CHECK-SAME: (i8* nofree writeonly [[X:%.*]]) #[[ATTR2:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store i8* [[X]], i8** @S, align 8
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; CHECK-NEXT: ret void
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;
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; CHECK-DISABLED-LABEL: define {{[^@]+}}@share
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; CHECK-DISABLED-SAME: (i8* nofree writeonly [[X:%.*]]) #[[ATTR2:[0-9]+]] {
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; CHECK-DISABLED-NEXT: entry:
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; CHECK-DISABLED-NEXT: store i8* [[X]], i8** @S, align 8
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; CHECK-DISABLED-NEXT: ret void
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;
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entry:
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store i8* %x, i8** @S
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ret void
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}
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define void @unused() {
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; CHECK-LABEL: define {{[^@]+}}@unused() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = alloca i8, i64 4, align 1
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; CHECK-NEXT: call void @use(i8* noalias readnone undef)
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; CHECK-NEXT: ret void
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;
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; CHECK-DISABLED-LABEL: define {{[^@]+}}@unused() {
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; CHECK-DISABLED-NEXT: entry:
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; CHECK-DISABLED-NEXT: [[TMP0:%.*]] = call i8* @__kmpc_alloc_shared(i64 4), !dbg [[DBG11:![0-9]+]]
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; CHECK-DISABLED-NEXT: call void @use(i8* noalias readnone [[TMP0]])
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; CHECK-DISABLED-NEXT: call void @__kmpc_free_shared(i8* [[TMP0]], i64 4)
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; CHECK-DISABLED-NEXT: ret void
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;
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entry:
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%0 = call i8* @__kmpc_alloc_shared(i64 4), !dbg !14
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call void @use(i8* %0)
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call void @__kmpc_free_shared(i8* %0, i64 4)
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ret void
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}
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; CHECK: declare i8* @__kmpc_alloc_shared(i64)
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declare i8* @__kmpc_alloc_shared(i64)
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; CHECK: declare void @__kmpc_free_shared(i8* nocapture, i64)
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declare void @__kmpc_free_shared(i8*, i64)
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declare void @unknown_no_openmp() "llvm.assume"="omp_no_openmp"
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !6, !7}
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!nvvm.annotations = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "remove_globalization.c", directory: "/tmp/remove_globalization.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 = !{void ()* @kernel, !"kernel", i32 1}
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!6 = !{i32 7, !"openmp", i32 50}
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!7 = !{i32 7, !"openmp-device", i32 50}
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!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !11, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!9 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 1, type: !11, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!10 = distinct !DISubprogram(name: "unused", scope: !1, file: !1, line: 1, type: !11, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!11 = !DISubroutineType(types: !2)
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!12 = !DILocation(line: 2, column: 2, scope: !8)
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!13 = !DILocation(line: 4, column: 2, scope: !9)
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!14 = !DILocation(line: 6, column: 2, scope: !9)
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;.
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; CHECK: attributes #[[ATTR0]] = { nosync nounwind }
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; CHECK: attributes #[[ATTR1]] = { nofree nosync nounwind readnone willreturn }
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; CHECK: attributes #[[ATTR2]] = { nofree nosync nounwind willreturn writeonly }
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; CHECK: attributes #[[ATTR3:[0-9]+]] = { "llvm.assume"="omp_no_openmp" }
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; CHECK: attributes #[[ATTR4]] = { nounwind }
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; CHECK: attributes #[[ATTR5]] = { nosync nounwind writeonly }
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;.
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; CHECK-DISABLED: attributes #[[ATTR0]] = { nosync nounwind }
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; CHECK-DISABLED: attributes #[[ATTR1]] = { nofree nosync nounwind readnone willreturn }
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; CHECK-DISABLED: attributes #[[ATTR2]] = { nofree nosync nounwind willreturn writeonly }
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; CHECK-DISABLED: attributes #[[ATTR3:[0-9]+]] = { "llvm.assume"="omp_no_openmp" }
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; CHECK-DISABLED: attributes #[[ATTR4]] = { nounwind }
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; CHECK-DISABLED: attributes #[[ATTR5]] = { nosync nounwind writeonly }
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;.
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; CHECK: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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; CHECK: [[META1:![0-9]+]] = !DIFile(filename: "remove_globalization.c", directory: "/tmp/remove_globalization.c")
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; CHECK: [[META2:![0-9]+]] = !{}
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; CHECK: [[META3:![0-9]+]] = !{i32 2, !"Debug Info Version", i32 3}
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; CHECK: [[META4:![0-9]+]] = !{i32 1, !"wchar_size", i32 4}
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; CHECK: [[META5:![0-9]+]] = !{i32 7, !"openmp", i32 50}
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; CHECK: [[META6:![0-9]+]] = !{i32 7, !"openmp-device", i32 50}
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; CHECK: [[META7:![0-9]+]] = !{void ()* @kernel, !"kernel", i32 1}
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; CHECK: [[DBG8]] = !DILocation(line: 4, column: 2, scope: !9)
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; CHECK: [[META9:![0-9]+]] = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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; CHECK: [[META10:![0-9]+]] = !DISubroutineType(types: !2)
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;.
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; CHECK-DISABLED: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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; CHECK-DISABLED: [[META1:![0-9]+]] = !DIFile(filename: "remove_globalization.c", directory: "/tmp/remove_globalization.c")
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; CHECK-DISABLED: [[META2:![0-9]+]] = !{}
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; CHECK-DISABLED: [[META3:![0-9]+]] = !{i32 2, !"Debug Info Version", i32 3}
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; CHECK-DISABLED: [[META4:![0-9]+]] = !{i32 1, !"wchar_size", i32 4}
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; CHECK-DISABLED: [[META5:![0-9]+]] = !{i32 7, !"openmp", i32 50}
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; CHECK-DISABLED: [[META6:![0-9]+]] = !{i32 7, !"openmp-device", i32 50}
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; CHECK-DISABLED: [[META7:![0-9]+]] = !{void ()* @kernel, !"kernel", i32 1}
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; CHECK-DISABLED: [[DBG8]] = !DILocation(line: 4, column: 2, scope: !9)
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; CHECK-DISABLED: [[META9:![0-9]+]] = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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; CHECK-DISABLED: [[META10:![0-9]+]] = !DISubroutineType(types: !2)
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; CHECK-DISABLED: [[DBG11]] = !DILocation(line: 6, column: 2, scope: !9)
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;.
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