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llvm-mirror/test/DebugInfo/X86/sdag-dbgvalue-phi-use-1.ll
Matt Arsenault 23c462a8b5 Rename ExpandISelPseudo->FinalizeISel, delay register reservation 
This allows targets to make more decisions about reserved registers
after isel. For example, now it should be certain there are calls or
stack objects in the frame or not, which could have been introduced by
legalization.

Patch by Matthias Braun

llvm-svn: 363757
2019-06-19 00:25:39 +00:00

179 lines
8.4 KiB
LLVM
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; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s | FileCheck %s
; This test case was generated from the following debug.c program,
; using: clang debug.c -g -O1 -S -o dbg_value_phi_isel1.ll -emit-llvm
; --------------------------------------
; int end = 10;
;
; int main() {
; int x = 9;
; int y = 13;
; for (int u = 0; u < end; ++u) {
; x += y;
; y = y * 3;
; }
;
; volatile int arr[80];
; for (int q = 0; q < 64; ++q) {
; arr[q] = q + 3;
; }
;
; return x;
; }
; --------------------------------------
;
; ModuleID = 'debug.c'
source_filename = "debug.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@end = dso_local local_unnamed_addr global i32 10, align 4, !dbg !0
; Function Attrs: nounwind uwtable
define dso_local i32 @main() local_unnamed_addr #0 !dbg !11 {
; CHECK-LABEL: name: main
entry:
%arr = alloca [80 x i32], align 16
call void @llvm.dbg.value(metadata i32 9, metadata !15, metadata !DIExpression()), !dbg !26
call void @llvm.dbg.value(metadata i32 13, metadata !16, metadata !DIExpression()), !dbg !27
call void @llvm.dbg.value(metadata i32 0, metadata !17, metadata !DIExpression()), !dbg !28
%0 = load i32, i32* @end, align 4, !dbg !29, !tbaa !31
%cmp20 = icmp sgt i32 %0, 0, !dbg !35
br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !36
for.body.lr.ph: ; preds = %entry
%1 = load i32, i32* @end, align 4, !tbaa !31
br label %for.body, !dbg !36
for.cond.cleanup: ; preds = %for.body, %entry
; CHECK-LABEL: bb.{{.*}}.for.cond.cleanup:
; CHECK: [[REG1:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: DBG_VALUE [[REG1]]
%x.0.lcssa = phi i32 [ 9, %entry ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i32 %x.0.lcssa, metadata !15, metadata !DIExpression()), !dbg !26
%2 = bitcast [80 x i32]* %arr to i8*, !dbg !37
call void @llvm.lifetime.start.p0i8(i64 320, i8* nonnull %2) #3, !dbg !37
call void @llvm.dbg.declare(metadata [80 x i32]* %arr, metadata !19, metadata !DIExpression()), !dbg !38
call void @llvm.dbg.value(metadata i32 0, metadata !24, metadata !DIExpression()), !dbg !39
br label %for.body4, !dbg !40
for.body: ; preds = %for.body.lr.ph, %for.body
; CHECK-LABEL: bb.{{.*}}.for.body:
; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: DBG_VALUE [[REG2]]
; CHECK-NEXT: DBG_VALUE [[REG3]]
; CHECK-NEXT: DBG_VALUE [[REG4]]
%u.023 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%y.022 = phi i32 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
%x.021 = phi i32 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i32 %u.023, metadata !17, metadata !DIExpression()), !dbg !28
call void @llvm.dbg.value(metadata i32 %y.022, metadata !16, metadata !DIExpression()), !dbg !27
call void @llvm.dbg.value(metadata i32 %x.021, metadata !15, metadata !DIExpression()), !dbg !26
%add = add nuw nsw i32 %y.022, %x.021, !dbg !41
%mul = mul nsw i32 %y.022, 3, !dbg !43
%inc = add nuw nsw i32 %u.023, 1, !dbg !44
call void @llvm.dbg.value(metadata i32 %inc, metadata !17, metadata !DIExpression()), !dbg !28
call void @llvm.dbg.value(metadata i32 %mul, metadata !16, metadata !DIExpression()), !dbg !27
call void @llvm.dbg.value(metadata i32 %add, metadata !15, metadata !DIExpression()), !dbg !26
%cmp = icmp slt i32 %inc, %1, !dbg !35
br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !36, !llvm.loop !45
for.cond.cleanup3: ; preds = %for.body4
call void @llvm.lifetime.end.p0i8(i64 320, i8* nonnull %2) #3, !dbg !47
ret i32 %x.0.lcssa, !dbg !48
for.body4: ; preds = %for.body4, %for.cond.cleanup
%indvars.iv = phi i64 [ 0, %for.cond.cleanup ], [ %indvars.iv.next, %for.body4 ]
call void @llvm.dbg.value(metadata i64 %indvars.iv, metadata !24, metadata !DIExpression()), !dbg !39
%arrayidx = getelementptr inbounds [80 x i32], [80 x i32]* %arr, i64 0, i64 %indvars.iv, !dbg !49
%3 = trunc i64 %indvars.iv to i32, !dbg !52
%4 = add i32 %3, 3, !dbg !52
store volatile i32 %4, i32* %arrayidx, align 4, !dbg !52, !tbaa !31
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !53
call void @llvm.dbg.value(metadata i32 undef, metadata !24, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !39
%exitcond = icmp eq i64 %indvars.iv.next, 64, !dbg !54
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4, !dbg !40, !llvm.loop !55
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
attributes #0 = { nounwind uwtable }
attributes #1 = { argmemonly nounwind }
attributes #2 = { nounwind readnone speculatable }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!7, !8, !9}
!llvm.ident = !{!10}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "debug.c", directory: "")
!4 = !{}
!5 = !{!0}
!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!7 = !{i32 2, !"Dwarf Version", i32 4}
!8 = !{i32 2, !"Debug Info Version", i32 3}
!9 = !{i32 1, !"wchar_size", i32 4}
!10 = !{!"clang version 7.0.0 (x)"}
!11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !14)
!12 = !DISubroutineType(types: !13)
!13 = !{!6}
!14 = !{!15, !16, !17, !19, !24}
!15 = !DILocalVariable(name: "x", scope: !11, file: !3, line: 4, type: !6)
!16 = !DILocalVariable(name: "y", scope: !11, file: !3, line: 5, type: !6)
!17 = !DILocalVariable(name: "u", scope: !18, file: !3, line: 6, type: !6)
!18 = distinct !DILexicalBlock(scope: !11, file: !3, line: 6, column: 3)
!19 = !DILocalVariable(name: "arr", scope: !11, file: !3, line: 11, type: !20)
!20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !21, size: 2560, elements: !22)
!21 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
!22 = !{!23}
!23 = !DISubrange(count: 80)
!24 = !DILocalVariable(name: "q", scope: !25, file: !3, line: 12, type: !6)
!25 = distinct !DILexicalBlock(scope: !11, file: !3, line: 12, column: 3)
!26 = !DILocation(line: 4, column: 7, scope: !11)
!27 = !DILocation(line: 5, column: 7, scope: !11)
!28 = !DILocation(line: 6, column: 12, scope: !18)
!29 = !DILocation(line: 6, column: 23, scope: !30)
!30 = distinct !DILexicalBlock(scope: !18, file: !3, line: 6, column: 3)
!31 = !{!32, !32, i64 0}
!32 = !{!"int", !33, i64 0}
!33 = !{!"omnipotent char", !34, i64 0}
!34 = !{!"Simple C/C++ TBAA"}
!35 = !DILocation(line: 6, column: 21, scope: !30)
!36 = !DILocation(line: 6, column: 3, scope: !18)
!37 = !DILocation(line: 11, column: 3, scope: !11)
!38 = !DILocation(line: 11, column: 16, scope: !11)
!39 = !DILocation(line: 12, column: 12, scope: !25)
!40 = !DILocation(line: 12, column: 3, scope: !25)
!41 = !DILocation(line: 7, column: 7, scope: !42)
!42 = distinct !DILexicalBlock(scope: !30, file: !3, line: 6, column: 33)
!43 = !DILocation(line: 8, column: 11, scope: !42)
!44 = !DILocation(line: 6, column: 28, scope: !30)
!45 = distinct !{!45, !36, !46}
!46 = !DILocation(line: 9, column: 3, scope: !18)
!47 = !DILocation(line: 17, column: 1, scope: !11)
!48 = !DILocation(line: 16, column: 3, scope: !11)
!49 = !DILocation(line: 13, column: 5, scope: !50)
!50 = distinct !DILexicalBlock(scope: !51, file: !3, line: 12, column: 32)
!51 = distinct !DILexicalBlock(scope: !25, file: !3, line: 12, column: 3)
!52 = !DILocation(line: 13, column: 12, scope: !50)
!53 = !DILocation(line: 12, column: 27, scope: !51)
!54 = !DILocation(line: 12, column: 21, scope: !51)
!55 = distinct !{!55, !40, !56}
!56 = !DILocation(line: 14, column: 3, scope: !25)
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