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llvm-project/llvm/test/CodeGen/AMDGPU/si-annotate-dbg-info.ll
Emma Pilkington 7babf22461
[StructurizeCFG] Stop setting DebugLocs in flow blocks (#139088) 
Flow blocks are generated code that don't really correspond to any
location in the source, so principally they should have empty DebugLocs.
Practically, setting these debug locs leads to redundant is_stmts being
generated after #108251, causing stepping test failures in the ROCm GDB
test suite.

Fixes SWDEV-502134
2025-05-09 14:22:14 -04:00

163 lines
9.7 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -mtriple=amdgcn-- -S -structurizecfg -si-annotate-control-flow %s | FileCheck -check-prefix=OPT %s
define amdgpu_ps i32 @if_else(i32 %0) !dbg !5 {
; OPT-LABEL: define amdgpu_ps i32 @if_else(
; OPT-SAME: i32 [[TMP0:%.*]]) !dbg [[DBG5:![0-9]+]] {
; OPT-NEXT: [[C:%.*]] = icmp ne i32 [[TMP0]], 0, !dbg [[DBG13:![0-9]+]]
; OPT-NEXT: #dbg_value(i1 [[C]], [[META9:![0-9]+]], !DIExpression(), [[DBG13]])
; OPT-NEXT: [[TMP2:%.*]] = call { i1, i64 } @llvm.amdgcn.if.i64(i1 [[C]]), !dbg [[DBG14:![0-9]+]]
; OPT-NEXT: [[TMP3:%.*]] = extractvalue { i1, i64 } [[TMP2]], 0, !dbg [[DBG14]]
; OPT-NEXT: [[TMP4:%.*]] = extractvalue { i1, i64 } [[TMP2]], 1, !dbg [[DBG14]]
; OPT-NEXT: br i1 [[TMP3]], label [[FALSE:%.*]], label [[FLOW:%.*]], !dbg [[DBG14]]
; OPT: Flow:
; OPT-NEXT: [[TMP5:%.*]] = call { i1, i64 } @llvm.amdgcn.else.i64.i64(i64 [[TMP4]])
; OPT-NEXT: [[TMP6:%.*]] = extractvalue { i1, i64 } [[TMP5]], 0
; OPT-NEXT: [[TMP8:%.*]] = extractvalue { i1, i64 } [[TMP5]], 1
; OPT-NEXT: br i1 [[TMP6]], label [[TRUE:%.*]], label [[EXIT:%.*]]
; OPT: true:
; OPT-NEXT: br label [[EXIT]], !dbg [[DBG15:![0-9]+]]
; OPT: false:
; OPT-NEXT: br label [[FLOW]], !dbg [[DBG16:![0-9]+]]
; OPT: exit:
; OPT-NEXT: [[RET:%.*]] = phi i32 [ 33, [[FLOW]] ], [ 42, [[TRUE]] ], !dbg [[DBG17:![0-9]+]]
; OPT-NEXT: call void @llvm.amdgcn.end.cf.i64(i64 [[TMP8]])
; OPT-NEXT: #dbg_value(i32 [[RET]], [[META11:![0-9]+]], !DIExpression(), [[DBG17]])
; OPT-NEXT: ret i32 [[RET]], !dbg [[DBG18:![0-9]+]]
;
%c = icmp eq i32 %0, 0, !dbg !13
tail call void @llvm.dbg.value(metadata i1 %c, metadata !9, metadata !DIExpression()), !dbg !13
br i1 %c, label %true, label %false, !dbg !14
true: ; preds = %1
br label %exit, !dbg !15
false: ; preds = %1
br label %exit, !dbg !16
exit: ; preds = %false, %true
%ret = phi i32 [ 42, %true ], [ 33, %false ], !dbg !17
tail call void @llvm.dbg.value(metadata i32 %ret, metadata !11, metadata !DIExpression()), !dbg !17
ret i32 %ret, !dbg !18
}
define amdgpu_ps void @loop_if_break(i32 %n) !dbg !19 {
; OPT-LABEL: define amdgpu_ps void @loop_if_break(
; OPT-SAME: i32 [[N:%.*]]) !dbg [[DBG19:![0-9]+]] {
; OPT-NEXT: entry:
; OPT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG24:![0-9]+]]
; OPT: loop:
; OPT-NEXT: [[PHI_BROKEN:%.*]] = phi i64 [ [[TMP5:%.*]], [[FLOW:%.*]] ], [ 0, [[ENTRY:%.*]] ]
; OPT-NEXT: [[I:%.*]] = phi i32 [ [[N]], [[ENTRY]] ], [ [[TMP3:%.*]], [[FLOW]] ], !dbg [[DBG25:![0-9]+]]
; OPT-NEXT: #dbg_value(i32 [[I]], [[META21:![0-9]+]], !DIExpression(), [[DBG25]])
; OPT-NEXT: [[C:%.*]] = icmp ugt i32 [[I]], 0, !dbg [[DBG26:![0-9]+]]
; OPT-NEXT: #dbg_value(i1 [[C]], [[META22:![0-9]+]], !DIExpression(), [[DBG26]])
; OPT-NEXT: [[TMP0:%.*]] = call { i1, i64 } @llvm.amdgcn.if.i64(i1 [[C]]), !dbg [[DBG27:![0-9]+]]
; OPT-NEXT: [[TMP1:%.*]] = extractvalue { i1, i64 } [[TMP0]], 0, !dbg [[DBG27]]
; OPT-NEXT: [[TMP2:%.*]] = extractvalue { i1, i64 } [[TMP0]], 1, !dbg [[DBG27]]
; OPT-NEXT: br i1 [[TMP1]], label [[LOOP_BODY:%.*]], label [[FLOW]], !dbg [[DBG27]]
; OPT: loop_body:
; OPT-NEXT: [[I_NEXT:%.*]] = sub i32 [[I]], 1, !dbg [[DBG28:![0-9]+]]
; OPT-NEXT: #dbg_value(i32 [[I_NEXT]], [[META23:![0-9]+]], !DIExpression(), [[DBG28]])
; OPT-NEXT: br label [[FLOW]], !dbg [[DBG29:![0-9]+]]
; OPT: Flow:
; OPT-NEXT: [[TMP3]] = phi i32 [ [[I_NEXT]], [[LOOP_BODY]] ], [ poison, [[LOOP]] ]
; OPT-NEXT: [[TMP4:%.*]] = phi i1 [ false, [[LOOP_BODY]] ], [ true, [[LOOP]] ]
; OPT-NEXT: call void @llvm.amdgcn.end.cf.i64(i64 [[TMP2]])
; OPT-NEXT: [[TMP5]] = call i64 @llvm.amdgcn.if.break.i64(i1 [[TMP4]], i64 [[PHI_BROKEN]])
; OPT-NEXT: [[TMP6:%.*]] = call i1 @llvm.amdgcn.loop.i64(i64 [[TMP5]])
; OPT-NEXT: br i1 [[TMP6]], label [[EXIT:%.*]], label [[LOOP]]
; OPT: exit:
; OPT-NEXT: call void @llvm.amdgcn.end.cf.i64(i64 [[TMP5]])
; OPT-NEXT: ret void, !dbg [[DBG30:![0-9]+]]
;
entry:
br label %loop, !dbg !24
loop: ; preds = %loop_body, %entry
%i = phi i32 [ %n, %entry ], [ %i.next, %loop_body ], !dbg !25
tail call void @llvm.dbg.value(metadata i32 %i, metadata !21, metadata !DIExpression()), !dbg !25
%c = icmp ugt i32 %i, 0, !dbg !26
tail call void @llvm.dbg.value(metadata i1 %c, metadata !22, metadata !DIExpression()), !dbg !26
br i1 %c, label %loop_body, label %exit, !dbg !27
loop_body: ; preds = %loop
%i.next = sub i32 %i, 1, !dbg !28
tail call void @llvm.dbg.value(metadata i32 %i.next, metadata !23, metadata !DIExpression()), !dbg !28
br label %loop, !dbg !29
exit: ; preds = %loop
ret void, !dbg !30
}
; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
!llvm.dbg.cu = !{!0}
!llvm.debugify = !{!2, !3}
!llvm.module.flags = !{!4}
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
!1 = !DIFile(filename: "../../../test/CodeGen/AMDGPU/si-annotate-dbg-info.ll", directory: "/")
!2 = !{i32 13}
!3 = !{i32 5}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = distinct !DISubprogram(name: "if_else", linkageName: "if_else", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
!6 = !DISubroutineType(types: !7)
!7 = !{}
!8 = !{!9, !11}
!9 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !10)
!10 = !DIBasicType(name: "ty8", size: 8, encoding: DW_ATE_unsigned)
!11 = !DILocalVariable(name: "2", scope: !5, file: !1, line: 5, type: !12)
!12 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
!13 = !DILocation(line: 1, column: 1, scope: !5)
!14 = !DILocation(line: 2, column: 1, scope: !5)
!15 = !DILocation(line: 3, column: 1, scope: !5)
!16 = !DILocation(line: 4, column: 1, scope: !5)
!17 = !DILocation(line: 5, column: 1, scope: !5)
!18 = !DILocation(line: 6, column: 1, scope: !5)
!19 = distinct !DISubprogram(name: "loop_if_break", linkageName: "loop_if_break", scope: null, file: !1, line: 7, type: !6, scopeLine: 7, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !20)
!20 = !{!21, !22, !23}
!21 = !DILocalVariable(name: "3", scope: !19, file: !1, line: 8, type: !12)
!22 = !DILocalVariable(name: "4", scope: !19, file: !1, line: 9, type: !10)
!23 = !DILocalVariable(name: "5", scope: !19, file: !1, line: 11, type: !12)
!24 = !DILocation(line: 7, column: 1, scope: !19)
!25 = !DILocation(line: 8, column: 1, scope: !19)
!26 = !DILocation(line: 9, column: 1, scope: !19)
!27 = !DILocation(line: 10, column: 1, scope: !19)
!28 = !DILocation(line: 11, column: 1, scope: !19)
!29 = !DILocation(line: 12, column: 1, scope: !19)
!30 = !DILocation(line: 13, column: 1, scope: !19)
;.
; OPT: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C, file: [[META1:![0-9]+]], producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
; OPT: [[META1]] = !DIFile(filename: "{{.*}}si-annotate-dbg-info.ll", directory: {{.*}})
; OPT: [[DBG5]] = distinct !DISubprogram(name: "if_else", linkageName: "if_else", scope: null, file: [[META1]], line: 1, type: [[META6:![0-9]+]], scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: [[META0]], retainedNodes: [[META8:![0-9]+]])
; OPT: [[META6]] = !DISubroutineType(types: [[META7:![0-9]+]])
; OPT: [[META7]] = !{}
; OPT: [[META8]] = !{[[META9]], [[META11]]}
; OPT: [[META9]] = !DILocalVariable(name: "1", scope: [[DBG5]], file: [[META1]], line: 1, type: [[META10:![0-9]+]])
; OPT: [[META10]] = !DIBasicType(name: "ty8", size: 8, encoding: DW_ATE_unsigned)
; OPT: [[META11]] = !DILocalVariable(name: "2", scope: [[DBG5]], file: [[META1]], line: 5, type: [[META12:![0-9]+]])
; OPT: [[META12]] = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
; OPT: [[DBG13]] = !DILocation(line: 1, column: 1, scope: [[DBG5]])
; OPT: [[DBG14]] = !DILocation(line: 2, column: 1, scope: [[DBG5]])
; OPT: [[DBG15]] = !DILocation(line: 3, column: 1, scope: [[DBG5]])
; OPT: [[DBG16]] = !DILocation(line: 4, column: 1, scope: [[DBG5]])
; OPT: [[DBG17]] = !DILocation(line: 5, column: 1, scope: [[DBG5]])
; OPT: [[DBG18]] = !DILocation(line: 6, column: 1, scope: [[DBG5]])
; OPT: [[DBG19]] = distinct !DISubprogram(name: "loop_if_break", linkageName: "loop_if_break", scope: null, file: [[META1]], line: 7, type: [[META6]], scopeLine: 7, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: [[META0]], retainedNodes: [[META20:![0-9]+]])
; OPT: [[META20]] = !{[[META21]], [[META22]], [[META23]]}
; OPT: [[META21]] = !DILocalVariable(name: "3", scope: [[DBG19]], file: [[META1]], line: 8, type: [[META12]])
; OPT: [[META22]] = !DILocalVariable(name: "4", scope: [[DBG19]], file: [[META1]], line: 9, type: [[META10]])
; OPT: [[META23]] = !DILocalVariable(name: "5", scope: [[DBG19]], file: [[META1]], line: 11, type: [[META12]])
; OPT: [[DBG24]] = !DILocation(line: 7, column: 1, scope: [[DBG19]])
; OPT: [[DBG25]] = !DILocation(line: 8, column: 1, scope: [[DBG19]])
; OPT: [[DBG26]] = !DILocation(line: 9, column: 1, scope: [[DBG19]])
; OPT: [[DBG27]] = !DILocation(line: 10, column: 1, scope: [[DBG19]])
; OPT: [[DBG28]] = !DILocation(line: 11, column: 1, scope: [[DBG19]])
; OPT: [[DBG29]] = !DILocation(line: 12, column: 1, scope: [[DBG19]])
; OPT: [[DBG30]] = !DILocation(line: 13, column: 1, scope: [[DBG19]])
;.
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