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llvm-mirror/test/DebugInfo/X86/dbg-value-dag-combine.ll
Robert Lougher f7f1be8b97 [LiveDebugVariables] Use lexical scope to trim debug value live intervals
The debug value live intervals computed by Live Debug Variables may extend
beyond the range of the debug location's lexical scope. In this case,
splitting of an interval can result in an interval outside of the scope being
created, causing extra unnecessary DBG_VALUEs to be emitted. To prevent this,
trim the intervals to the lexical scope.

This resolves PR33730.

Reviewers: aprantl

Differential Revision: https://reviews.llvm.org/D35953

llvm-svn: 309933
2017-08-03 11:54:02 +00:00

55 lines
3.0 KiB
LLVM

; RUN: llc < %s | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32"
target triple = "i686-apple-darwin"
; PR 9817
; There should be a DEBUG_VALUE for each call to llvm.dbg.value
; CHECK-LABEL: __OpenCL_test_kernel:
; CHECK-DAG: ##DEBUG_VALUE: __OpenCL_test_kernel:ip <-
; CHECK-DAG: ##DEBUG_VALUE: xxx <- 0
; CHECK-DAG: ##DEBUG_VALUE: gid <- %E{{..$}}
; CHECK-DAG: ##DEBUG_VALUE: idx <- %E{{..$}}
; CHECK-NOT: ##DEBUG_VALUE:
declare <4 x i32> @__amdil_get_global_id_int()
declare void @llvm.dbg.value(metadata, metadata, metadata)
define void @__OpenCL_test_kernel(i32 addrspace(1)* %ip) nounwind !dbg !0 {
entry:
call void @llvm.dbg.value(metadata i32 addrspace(1)* %ip, metadata !7, metadata !DIExpression()), !dbg !8
%0 = call <4 x i32> @__amdil_get_global_id_int() nounwind
%1 = extractelement <4 x i32> %0, i32 0
call void @llvm.dbg.value(metadata i32 %1, metadata !9, metadata !DIExpression()), !dbg !11
call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !DIExpression()), !dbg !14
%tmp2 = load i32, i32 addrspace(1)* %ip, align 4, !dbg !15
%tmp3 = add i32 0, %tmp2, !dbg !15
call void @llvm.dbg.value(metadata i32 %tmp3, metadata !13, metadata !DIExpression()), !dbg !15
%arrayidx = getelementptr i32, i32 addrspace(1)* %ip, i32 %1, !dbg !16
store i32 %tmp3, i32 addrspace(1)* %arrayidx, align 4, !dbg !16
ret void, !dbg !17
}
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!20}
!0 = distinct !DISubprogram(name: "__OpenCL_test_kernel", linkageName: "__OpenCL_test_kernel", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2, file: !19, scope: !1, type: !3)
!1 = !DIFile(filename: "OCL6368.tmp.cl", directory: "E:CUsersCmvillmow.AMDCAppDataCLocalCTemp")
!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "clc", isOptimized: false, emissionKind: FullDebug, file: !19, enums: !12, retainedTypes: !12, imports: null)
!3 = !DISubroutineType(types: !4)
!4 = !{null, !5}
!5 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !6)
!6 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
!7 = !DILocalVariable(name: "ip", line: 1, arg: 1, scope: !0, file: !1, type: !5)
!8 = !DILocation(line: 1, column: 42, scope: !0)
!9 = !DILocalVariable(name: "gid", line: 3, scope: !10, file: !1, type: !6)
!10 = distinct !DILexicalBlock(line: 2, column: 1, file: !19, scope: !0)
!11 = !DILocation(line: 3, column: 41, scope: !10)
!12 = !{}
!13 = !DILocalVariable(name: "idx", line: 4, scope: !10, file: !1, type: !6)
!14 = !DILocation(line: 4, column: 20, scope: !10)
!15 = !DILocation(line: 5, column: 15, scope: !10)
!16 = !DILocation(line: 6, column: 18, scope: !10)
!17 = !DILocation(line: 7, column: 1, scope: !0)
!19 = !DIFile(filename: "OCL6368.tmp.cl", directory: "E:\5CUsers\5Cmvillmow.AMD\5CAppData\5CLocal\5CTemp")
!20 = !{i32 1, !"Debug Info Version", i32 3}
!21 = !DILocalVariable(name: "xxx", line: 4, scope: !10, file: !1, type: !6)