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llvm-project/llvm/test/Transforms/LoopReroll/reroll_with_dbg.ll

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[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
;RUN: opt < %s -loop-reroll -S | FileCheck %s
;void foo(float * restrict a, float * restrict b, int n) {
; for(int i = 0; i < n; i+=4) {
; a[i] = b[i];
; a[i+1] = b[i+1];
; a[i+2] = b[i+2];
; a[i+3] = b[i+3];
; }
;}
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "armv4t--linux-gnueabi"
; Function Attrs: nounwind
DI: Reverse direction of subprogram -> function edge. Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
2015-11-06 06:03:56 +08:00
define void @foo(float* noalias nocapture %a, float* noalias nocapture readonly %b, i32 %n) #0 !dbg !4 {
[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
entry:
;CHECK-LABEL: @foo
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata float* %a, metadata !12, metadata !22), !dbg !23
tail call void @llvm.dbg.value(metadata float* %b, metadata !13, metadata !22), !dbg !24
tail call void @llvm.dbg.value(metadata i32 %n, metadata !14, metadata !22), !dbg !25
tail call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !22), !dbg !26
[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
%cmp.30 = icmp sgt i32 %n, 0, !dbg !27
br i1 %cmp.30, label %for.body.preheader, label %for.cond.cleanup, !dbg !29
for.body.preheader: ; preds = %entry
br label %for.body, !dbg !30
for.cond.cleanup.loopexit: ; preds = %for.body
br label %for.cond.cleanup, !dbg !32
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void, !dbg !32
for.body: ; preds = %for.body.preheader, %for.body
;CHECK: for.body:
;CHECK: %indvar = phi i32 [ %indvar.next, %for.body ], [ 0, {{.*}} ]
;CHECK: load
;CHECK: store
;CHECK-NOT: load
;CHECK-NOT: store
;CHECK: call void @llvm.dbg.value
;CHECK: %indvar.next = add i32 %indvar, 1
;CHECK: icmp eq i32 %indvar
%i.031 = phi i32 [ %add13, %for.body ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds float, float* %b, i32 %i.031, !dbg !30
%0 = bitcast float* %arrayidx to i32*, !dbg !30
%1 = load i32, i32* %0, align 4, !dbg !30, !tbaa !33
%arrayidx1 = getelementptr inbounds float, float* %a, i32 %i.031, !dbg !37
%2 = bitcast float* %arrayidx1 to i32*, !dbg !38
store i32 %1, i32* %2, align 4, !dbg !38, !tbaa !33
%add = or i32 %i.031, 1, !dbg !39
%arrayidx2 = getelementptr inbounds float, float* %b, i32 %add, !dbg !40
%3 = bitcast float* %arrayidx2 to i32*, !dbg !40
%4 = load i32, i32* %3, align 4, !dbg !40, !tbaa !33
%arrayidx4 = getelementptr inbounds float, float* %a, i32 %add, !dbg !41
%5 = bitcast float* %arrayidx4 to i32*, !dbg !42
store i32 %4, i32* %5, align 4, !dbg !42, !tbaa !33
%add5 = or i32 %i.031, 2, !dbg !43
%arrayidx6 = getelementptr inbounds float, float* %b, i32 %add5, !dbg !44
%6 = bitcast float* %arrayidx6 to i32*, !dbg !44
%7 = load i32, i32* %6, align 4, !dbg !44, !tbaa !33
%arrayidx8 = getelementptr inbounds float, float* %a, i32 %add5, !dbg !45
%8 = bitcast float* %arrayidx8 to i32*, !dbg !46
store i32 %7, i32* %8, align 4, !dbg !46, !tbaa !33
%add9 = or i32 %i.031, 3, !dbg !47
%arrayidx10 = getelementptr inbounds float, float* %b, i32 %add9, !dbg !48
%9 = bitcast float* %arrayidx10 to i32*, !dbg !48
%10 = load i32, i32* %9, align 4, !dbg !48, !tbaa !33
%arrayidx12 = getelementptr inbounds float, float* %a, i32 %add9, !dbg !49
%11 = bitcast float* %arrayidx12 to i32*, !dbg !50
store i32 %10, i32* %11, align 4, !dbg !50, !tbaa !33
%add13 = add nuw nsw i32 %i.031, 4, !dbg !51
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32 %add13, metadata !15, metadata !22), !dbg !26
[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
%cmp = icmp slt i32 %add13, %n, !dbg !27
br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !29
}
; Function Attrs: nounwind readnone
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="arm7tdmi" "target-features"="+strict-align" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!17, !18, !19, !20}
!llvm.ident = !{!21}
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (http://llvm.org/git/clang.git b1fbc23058e7fa1cdd954ab97ba84f1c549c9879) (http://llvm.org/git/llvm.git 054da58c5398a721d4dab7af63d7de8d7a1e1a1c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
!1 = !DIFile(filename: "test.c", directory: "/home/weimingz/llvm-build/release/community-tip")
!2 = !{}
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !11)
[LoopReroll] Ignore debug intrinsics Originally, debug intrinsics and annotation intrinsics may prevent the loop to be rerolled, now they are ignored. Differential Revision: http://reviews.llvm.org/D13150 llvm-svn: 248718
2015-09-29 01:03:23 +08:00
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !7, !10}
!7 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !8)
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)
!9 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!11 = !{!12, !13, !14, !15}
!12 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 1, type: !7)
!13 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 1, type: !7)
!14 = !DILocalVariable(name: "n", arg: 3, scope: !4, file: !1, line: 1, type: !10)
!15 = !DILocalVariable(name: "i", scope: !16, file: !1, line: 2, type: !10)
!16 = distinct !DILexicalBlock(scope: !4, file: !1, line: 2, column: 3)
!17 = !{i32 2, !"Dwarf Version", i32 4}
!18 = !{i32 2, !"Debug Info Version", i32 3}
!19 = !{i32 1, !"wchar_size", i32 4}
!20 = !{i32 1, !"min_enum_size", i32 4}
!21 = !{!"clang version 3.8.0 (http://llvm.org/git/clang.git b1fbc23058e7fa1cdd954ab97ba84f1c549c9879) (http://llvm.org/git/llvm.git 054da58c5398a721d4dab7af63d7de8d7a1e1a1c)"}
!22 = !DIExpression()
!23 = !DILocation(line: 1, column: 27, scope: !4)
!24 = !DILocation(line: 1, column: 47, scope: !4)
!25 = !DILocation(line: 1, column: 54, scope: !4)
!26 = !DILocation(line: 2, column: 11, scope: !16)
!27 = !DILocation(line: 2, column: 20, scope: !28)
!28 = distinct !DILexicalBlock(scope: !16, file: !1, line: 2, column: 3)
!29 = !DILocation(line: 2, column: 3, scope: !16)
!30 = !DILocation(line: 3, column: 12, scope: !31)
!31 = distinct !DILexicalBlock(scope: !28, file: !1, line: 2, column: 31)
!32 = !DILocation(line: 8, column: 1, scope: !4)
!33 = !{!34, !34, i64 0}
!34 = !{!"float", !35, i64 0}
!35 = !{!"omnipotent char", !36, i64 0}
!36 = !{!"Simple C/C++ TBAA"}
!37 = !DILocation(line: 3, column: 5, scope: !31)
!38 = !DILocation(line: 3, column: 10, scope: !31)
!39 = !DILocation(line: 4, column: 17, scope: !31)
!40 = !DILocation(line: 4, column: 14, scope: !31)
!41 = !DILocation(line: 4, column: 5, scope: !31)
!42 = !DILocation(line: 4, column: 12, scope: !31)
!43 = !DILocation(line: 5, column: 17, scope: !31)
!44 = !DILocation(line: 5, column: 14, scope: !31)
!45 = !DILocation(line: 5, column: 5, scope: !31)
!46 = !DILocation(line: 5, column: 12, scope: !31)
!47 = !DILocation(line: 6, column: 17, scope: !31)
!48 = !DILocation(line: 6, column: 14, scope: !31)
!49 = !DILocation(line: 6, column: 5, scope: !31)
!50 = !DILocation(line: 6, column: 12, scope: !31)
!51 = !DILocation(line: 2, column: 26, scope: !28)