44feacc736
After landing the globalization optimizations, the precense of globalization on the device that was not put in shared or stack memory is a failed optimization with performance consequences so it should indicate a missed remark. Reviewed By: jdoerfert Differential Revision: https://reviews.llvm.org/D104735
49 lines
1.8 KiB
LLVM
49 lines
1.8 KiB
LLVM
; RUN: opt -O2 -pass-remarks-missed=openmp-opt -enable-new-pm < %s 2>&1 | FileCheck %s --check-prefix=MODULE
|
|
target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
|
|
|
|
@.str = private unnamed_addr constant [13 x i8] c"Alloc Shared\00", align 1
|
|
|
|
@S = external local_unnamed_addr global i8*
|
|
|
|
; MODULE: remark: openmp_opt_module.c:5:7: Found thread data sharing on the GPU. Expect degraded performance due to data globalization.
|
|
|
|
define void @foo() {
|
|
entry:
|
|
%x = call i8* @__kmpc_alloc_shared(i64 4), !dbg !7
|
|
%x_on_stack = bitcast i8* %x to i32*
|
|
%0 = bitcast i32* %x_on_stack to i8*
|
|
call void @use(i8* %0)
|
|
call void @__kmpc_free_shared(i8* %x)
|
|
ret void
|
|
}
|
|
|
|
define void @use(i8* %0) {
|
|
entry:
|
|
%.addr = alloca i8*, align 8
|
|
store i8* %0, i8** @S
|
|
ret void
|
|
}
|
|
|
|
define weak i8* @__kmpc_alloc_shared(i64 %DataSize) {
|
|
entry:
|
|
%call = call i8* @_Z10SafeMallocmPKc(i64 %DataSize, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0)) #11
|
|
ret i8* %call
|
|
}
|
|
|
|
; Function Attrs: convergent nounwind mustprogress
|
|
declare i8* @_Z10SafeMallocmPKc(i64 %size, i8* nocapture readnone %msg)
|
|
|
|
declare void @__kmpc_free_shared(i8*)
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4}
|
|
|
|
!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: "openmp_opt_module.c", directory: "/tmp/openmp_opt_module.c")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!4 = !{i32 1, !"wchar_size", i32 4}
|
|
!5 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !6, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
|
|
!6 = !DISubroutineType(types: !2)
|
|
!7 = !DILocation(line: 5, column: 7, scope: !5)
|