192a34ddb0
Heap-2-stack and heap-2-shared can replace an allocation call with something else. To avoid us deriving information from the allocator implementation we register a simplification callback now that will force us to stop at the call site. We probably should create the replacement memory eagerly and return that instead though.
236 lines
12 KiB
LLVM
236 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals --include-generated-funcs
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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 -disable-output < %s 2>&1 | FileCheck %s -check-prefix=CHECK-REMARKS
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; RUN: opt -passes=openmp-opt -pass-remarks=openmp-opt -pass-remarks-missed=openmp-opt -disable-output -openmp-opt-shared-limit=4 < %s 2>&1 | FileCheck %s -check-prefix=CHECK-LIMIT
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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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; UTC_ARGS: --disable
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; CHECK-REMARKS: remark: replace_globalization.c:5:7: Replaced globalized variable with 16 bytes of shared memory
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; CHECK-REMARKS: remark: replace_globalization.c:5:14: Replaced globalized variable with 4 bytes of shared memory
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; CHECK-REMARKS-NOT: 6 bytes
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; CHECK-LIMIT: remark: replace_globalization.c:5:14: Replaced globalized variable with 4 bytes of shared memory
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; CHECK-LIMIT: remark: replace_globalization.c:5:7: Found thread data sharing on the GPU. Expect degraded performance due to data globalization
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; UTC_ARGS: --enable
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%struct.ident_t = type { i32, i32, i32, i32, i8* }
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@S = external local_unnamed_addr global i8*
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@0 = private unnamed_addr constant [113 x i8] c";llvm/test/Transforms/OpenMP/custom_state_machines_remarks.c;__omp_offloading_2a_d80d3d_test_fallback_l11;11;1;;\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 ([113 x i8], [113 x i8]* @0, i32 0, i32 0) }, align 8
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define dso_local void @foo() {
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entry:
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%c = call i32 @__kmpc_target_init(%struct.ident_t* @1, i8 1, i1 true, i1 true)
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%x = call align 4 i8* @__kmpc_alloc_shared(i64 4)
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call void @unknown_no_openmp()
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%x_on_stack = bitcast i8* %x to i32*
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%0 = bitcast i32* %x_on_stack to i8*
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call void @use(i8* %0)
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call void @__kmpc_free_shared(i8* %x, i64 4)
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call void @__kmpc_target_deinit(%struct.ident_t* @1, i8 1, i1 true)
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ret void
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}
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define void @bar() {
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%c = call i32 @__kmpc_target_init(%struct.ident_t* @1, i8 1, i1 true, i1 true)
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call void @unknown_no_openmp()
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%cmp = icmp eq i32 %c, -1
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br i1 %cmp, label %master1, label %exit
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master1:
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%x = call align 4 i8* @__kmpc_alloc_shared(i64 16), !dbg !11
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%x_on_stack = bitcast i8* %x to [4 x i32]*
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%a0 = bitcast [4 x i32]* %x_on_stack to i8*
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call void @use(i8* %a0)
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call void @__kmpc_free_shared(i8* %x, i64 16)
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br label %next
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next:
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call void @unknown_no_openmp()
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%b0 = icmp eq i32 %c, -1
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br i1 %b0, label %master2, label %exit
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master2:
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%y = call align 4 i8* @__kmpc_alloc_shared(i64 4), !dbg !12
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%y_on_stack = bitcast i8* %y to [4 x i32]*
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%b1 = bitcast [4 x i32]* %y_on_stack to i8*
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call void @use(i8* %b1)
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call void @__kmpc_free_shared(i8* %y, i64 4)
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br label %exit
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exit:
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call void @__kmpc_target_deinit(%struct.ident_t* @1, i8 1, i1 true)
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ret void
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}
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define void @baz_spmd() {
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%c = call i32 @__kmpc_target_init(%struct.ident_t* @1, i8 2, i1 true, i1 true)
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call void @unknown_no_openmp()
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%c0 = icmp eq i32 %c, -1
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br i1 %c0, label %master3, label %exit
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master3:
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%z = call align 4 i8* @__kmpc_alloc_shared(i64 24), !dbg !12
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%z_on_stack = bitcast i8* %z to [6 x i32]*
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%c1 = bitcast [6 x i32]* %z_on_stack to i8*
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call void @use(i8* %c1)
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call void @__kmpc_free_shared(i8* %z, i64 24)
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br label %exit
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exit:
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call void @__kmpc_target_deinit(%struct.ident_t* @1, i8 2, i1 true)
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ret void
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}
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define void @use(i8* %x) {
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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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@offset =global i32 undef
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@stack = internal addrspace(3) global [1024 x i8] undef
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define private i8* @__kmpc_alloc_shared(i64) {
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%bc = bitcast [1024 x i8] addrspace(3) * @stack to i8 addrspace(3) *
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%ac = addrspacecast i8 addrspace(3) * %bc to i8*
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%l = load i32, i32* @offset
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%gep = getelementptr i8, i8* %ac, i32 %l
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ret i8* %gep
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}
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declare void @__kmpc_free_shared(i8*, i64)
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declare i32 @llvm.nvvm.read.ptx.sreg.tid.x()
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declare i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
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declare i32 @llvm.nvvm.read.ptx.sreg.warpsize()
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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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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, !5, !6}
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!nvvm.annotations = !{!7, !8}
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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: "replace_globalization.c", directory: "/tmp/replace_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 = !{i32 7, !"openmp", i32 50}
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!6 = !{i32 7, !"openmp-device", i32 50}
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!7 = !{void ()* @foo, !"kernel", i32 1}
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!8 = !{void ()* @bar, !"kernel", i32 1}
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!13 = !{void ()* @baz_spmd, !"kernel", i32 1}
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!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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!10 = !DISubroutineType(types: !2)
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!11 = !DILocation(line: 5, column: 7, scope: !9)
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!12 = !DILocation(line: 5, column: 14, scope: !9)
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;.
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; CHECK: @[[S:[a-zA-Z0-9_$"\\.-]+]] = external local_unnamed_addr global i8*
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; CHECK: @[[GLOB0:[0-9]+]] = private unnamed_addr constant [113 x i8] c"
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; CHECK: @[[GLOB1:[0-9]+]] = private unnamed_addr constant [[STRUCT_IDENT_T:%.*]] { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([113 x i8], [113 x i8]* @[[GLOB0]], i32 0, i32 0) }, align 8
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; CHECK: @[[OFFSET:[a-zA-Z0-9_$"\\.-]+]] = global i32 undef
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; CHECK: @[[STACK:[a-zA-Z0-9_$"\\.-]+]] = internal addrspace(3) global [1024 x i8] undef
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; CHECK: @[[X_SHARED:[a-zA-Z0-9_$"\\.-]+]] = internal addrspace(3) global [16 x i8] undef, align 4
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; CHECK: @[[Y_SHARED:[a-zA-Z0-9_$"\\.-]+]] = internal addrspace(3) global [4 x i8] undef, align 4
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;.
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; CHECK-LABEL: define {{[^@]+}}@foo() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i8 1, i1 false, i1 true)
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; CHECK-NEXT: [[X:%.*]] = call align 4 i8* @__kmpc_alloc_shared(i64 noundef 4) #[[ATTR6:[0-9]+]]
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; CHECK-NEXT: call void @unknown_no_openmp() #[[ATTR5:[0-9]+]]
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; CHECK-NEXT: [[X_ON_STACK:%.*]] = bitcast i8* [[X]] to i32*
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[X_ON_STACK]] to i8*
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; CHECK-NEXT: call void @use.internalized(i8* nofree align 4 [[TMP0]]) #[[ATTR7:[0-9]+]]
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; CHECK-NEXT: call void @__kmpc_free_shared(i8* [[X]], i64 4) #[[ATTR8:[0-9]+]]
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; CHECK-NEXT: call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i8 1, i1 true)
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define {{[^@]+}}@bar() {
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; CHECK-NEXT: [[C:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i8 1, i1 false, i1 true)
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; CHECK-NEXT: call void @unknown_no_openmp() #[[ATTR5]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C]], -1
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; CHECK-NEXT: br i1 [[CMP]], label [[MASTER1:%.*]], label [[EXIT:%.*]]
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; CHECK: master1:
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; CHECK-NEXT: [[X_ON_STACK:%.*]] = bitcast i8* addrspacecast (i8 addrspace(3)* getelementptr inbounds ([16 x i8], [16 x i8] addrspace(3)* @x_shared, i32 0, i32 0) to i8*) to [4 x i32]*
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; CHECK-NEXT: [[A0:%.*]] = bitcast [4 x i32]* [[X_ON_STACK]] to i8*
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; CHECK-NEXT: call void @use.internalized(i8* nofree align 4 [[A0]]) #[[ATTR7]]
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; CHECK-NEXT: br label [[NEXT:%.*]]
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; CHECK: next:
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; CHECK-NEXT: call void @unknown_no_openmp() #[[ATTR5]]
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; CHECK-NEXT: br label [[MASTER2:%.*]]
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; CHECK: master2:
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; CHECK-NEXT: [[Y_ON_STACK:%.*]] = bitcast i8* addrspacecast (i8 addrspace(3)* getelementptr inbounds ([4 x i8], [4 x i8] addrspace(3)* @y_shared, i32 0, i32 0) to i8*) to [4 x i32]*
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; CHECK-NEXT: [[B1:%.*]] = bitcast [4 x i32]* [[Y_ON_STACK]] to i8*
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; CHECK-NEXT: call void @use.internalized(i8* nofree align 4 [[B1]]) #[[ATTR7]]
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i8 1, i1 true)
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define {{[^@]+}}@baz_spmd() {
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; CHECK-NEXT: [[C:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i8 2, i1 true, i1 true)
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; CHECK-NEXT: call void @unknown_no_openmp() #[[ATTR5]]
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; CHECK-NEXT: [[C0:%.*]] = icmp eq i32 [[C]], -1
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; CHECK-NEXT: br i1 [[C0]], label [[MASTER3:%.*]], label [[EXIT:%.*]]
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; CHECK: master3:
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; CHECK-NEXT: [[Z:%.*]] = call align 4 i8* @__kmpc_alloc_shared(i64 noundef 24) #[[ATTR6]], !dbg [[DBG9:![0-9]+]]
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; CHECK-NEXT: [[Z_ON_STACK:%.*]] = bitcast i8* [[Z]] to [6 x i32]*
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; CHECK-NEXT: [[C1:%.*]] = bitcast [6 x i32]* [[Z_ON_STACK]] to i8*
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; CHECK-NEXT: call void @use.internalized(i8* nofree writeonly align 4 [[C1]]) #[[ATTR7]]
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; CHECK-NEXT: call void @__kmpc_free_shared(i8* [[Z]], i64 24) #[[ATTR8]]
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i8 2, i1 true)
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; CHECK-NEXT: ret void
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;
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;
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; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
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; CHECK-LABEL: define {{[^@]+}}@use.internalized
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; CHECK-SAME: (i8* nofree writeonly align 4 [[X:%.*]]) #[[ATTR0:[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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;
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; CHECK-LABEL: define {{[^@]+}}@use
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; CHECK-SAME: (i8* [[X:%.*]]) {
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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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;
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; CHECK-LABEL: define {{[^@]+}}@__kmpc_alloc_shared
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; CHECK-SAME: (i64 [[TMP0:%.*]]) #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: [[L:%.*]] = load i32, i32* @offset, align 4
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, i8* addrspacecast (i8 addrspace(3)* getelementptr inbounds ([1024 x i8], [1024 x i8] addrspace(3)* @stack, i32 0, i32 0) to i8*), i32 [[L]]
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; CHECK-NEXT: ret i8* [[GEP]]
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;
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;.
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; CHECK: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind willreturn writeonly }
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; CHECK: attributes #[[ATTR1]] = { nofree norecurse nosync nounwind readonly willreturn allocsize(0) }
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; CHECK: attributes #[[ATTR2:[0-9]+]] = { nosync nounwind }
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; CHECK: attributes #[[ATTR3:[0-9]+]] = { nounwind readnone speculatable }
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; CHECK: attributes #[[ATTR4:[0-9]+]] = { nofree nosync nounwind readnone speculatable willreturn }
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; CHECK: attributes #[[ATTR5]] = { "llvm.assume"="omp_no_openmp" }
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; CHECK: attributes #[[ATTR6]] = { nounwind readonly }
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; CHECK: attributes #[[ATTR7]] = { nounwind writeonly }
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; CHECK: attributes #[[ATTR8]] = { nounwind }
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;.
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; CHECK: [[META0:![0-9]+]] = 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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; CHECK: [[META1:![0-9]+]] = !DIFile(filename: "replace_globalization.c", directory: "/tmp/replace_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 ()* @foo, !"kernel", i32 1}
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; CHECK: [[META8:![0-9]+]] = !{void ()* @bar, !"kernel", i32 1}
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; CHECK: [[DBG9]] = !DILocation(line: 5, column: 14, scope: !10)
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; CHECK: [[META10:![0-9]+]] = 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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; CHECK: [[META11:![0-9]+]] = !DISubroutineType(types: !2)
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;.
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