[RemoveDIs] Update update_test_checks script to recognize dbg_records #87388
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OCHyams
reviewed
Apr 3, 2024
Comment on lines
+67
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+95
| br label %for.cond, !dbg !47 | ||
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| for.cond: ; preds = %for.inc, %entry | ||
| %0 = load i32, ptr %i, align 4, !dbg !49, !tbaa !24 | ||
| %1 = load ptr, ptr %A.addr, align 8, !dbg !51, !tbaa !18 | ||
| %2 = load i32, ptr %1, align 4, !dbg !52, !tbaa !24 | ||
| %cmp = icmp slt i32 %0, %2, !dbg !53 | ||
| br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !54 | ||
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| for.cond.cleanup: ; preds = %for.cond | ||
| call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !55 | ||
| br label %for.end | ||
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| for.body: ; preds = %for.cond | ||
| %3 = load ptr, ptr %A.addr, align 8, !dbg !56, !tbaa !18 | ||
| %4 = load i32, ptr %i, align 4, !dbg !57, !tbaa !24 | ||
| %idxprom = sext i32 %4 to i64, !dbg !56 | ||
| %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !56 | ||
| store i32 0, ptr %arrayidx, align 4, !dbg !58, !tbaa !24 | ||
| br label %for.inc, !dbg !56 | ||
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| for.inc: ; preds = %for.body | ||
| %5 = load i32, ptr %i, align 4, !dbg !59, !tbaa !24 | ||
| %inc = add nsw i32 %5, 1, !dbg !59 | ||
| store i32 %inc, ptr %i, align 4, !dbg !59, !tbaa !24 | ||
| br label %for.cond, !dbg !55, !llvm.loop !60 | ||
|
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| for.end: ; preds = %for.cond.cleanup | ||
| ret void, !dbg !62 |
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Is all this needed? Can the test be simplified? Same again for the other tests.
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It may not be strictly necessary, but my preference is to have the tests for intrinsics vs records to be identical save for the intrinsics/records themselves - making them different increases dev complexity (not just in reducing the file initially, but in the need to verify the correctness of both files separately if future updates affect these tests), and probably doesn't save us much in return.
Edit: For clarity here in case it's not obvious, all the test files added here are carbon copies of existing tests, with the exception that debug intrinsics are replaced with debug values.
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Oh I see this test is a DbgRecord mirror of various_ir_values.ll. Instead of duplicating tests is there a reason we can't replicate this test in various_ir_values.ll using flags in opt to force it to print the new format? I am not sure how these tests are set up.
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It would be awkward - this and the other .ll files (with names ending in .expected) are being cp and diffed against, and so rely on being exactly identical. We could only meaningfully remove the various_ir_values_dbgrecords.ll file, not any of the expected files, and I think on principle we should aim to keep the test as just cp, diff, and invoking update_test_checks, rather than adding extra calls to opt outside of the update tool.
nhaehnle
reviewed
Apr 16, 2024
| @@ -1079,6 +1079,7 @@ def get_value_use(self, var, match, var_prefix=None): | |||
| NamelessValue(r"META", "!", r"", r"![0-9]+", r"(?:distinct |)!.*"), | |||
| NamelessValue(r"ACC_GRP", "!", r"!llvm.access.group ", r"![0-9]+", None), | |||
| NamelessValue(r"META", "!", r"![a-z.]+ ", r"![0-9]+", None), | |||
| NamelessValue(r"META", "!", r".", r"![0-9]+", None), | |||
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It would be good to make the prefix expression a little more specific if possible. It can probably be replaced with r" ", right? Or r"[( ]"?
And given that, can you remove the NamelessValue with the "metadata " prefix? It seems that this is now redundant.
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Regarding brittleness - it would be syntactically correct to include , in the prefix expression ([(, ]) as well, since it's not a parser error if there is no whitespace betwen arguments(i.e. !1,!2), but the assembly writer will never omit the whitespace; since this should only be running on the output of the assembly writer, would you consider it safe/good practice for this tool to only check what will currently be written, and not what could potentially exist in a file?
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Interesting point. The tool really is meant to look at tooling output, not human-written IR, so you can argue both ways. I don't feel very strongly about it -- I think either way is fine.
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@llvm/pr-subscribers-testing-tools Author: Stephen Tozer (SLTozer) ChangesAs we've added new IR elements, as described here and implemented here, we need the update_test_checks script to understand them. For the records themselves this is already done automatically, but their metadata arguments are not recognized as such due to lacking the I'm not well-acquainted with the update_test_checks scripts, so I'm not sure if this pattern is too broad for the update script's purposes; it appears to work without clashing with any existing patterns though. Patch is 94.32 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/87388.diff 8 Files Affected:
diff --git a/llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll b/llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll
new file mode 100644
index 00000000000000..9a9cc0a06936f9
--- /dev/null
+++ b/llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll
@@ -0,0 +1,168 @@
+; Just run it through opt, no passes needed.
+; RUN: opt < %s -S --write-experimental-debuginfo=true | FileCheck %s
+
+; ModuleID = 'various_ir_values.c'
+source_filename = "various_ir_values.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: nounwind uwtable
+define dso_local void @foo(ptr %A) #0 !dbg !7 {
+entry:
+ %A.addr = alloca ptr, align 8, !DIAssignID !16
+ %i = alloca i32, align 4
+ #dbg_assign(i1 undef, !13, !DIExpression(), !16, ptr %A.addr, !DIExpression(), !17)
+ store ptr %A, ptr %A.addr, align 8, !tbaa !18
+ #dbg_declare(ptr %A.addr, !13, !DIExpression(), !17)
+ call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2, !dbg !22
+ #dbg_declare(ptr %i, !14, !DIExpression(), !23)
+ store i32 0, ptr %i, align 4, !dbg !23, !tbaa !24
+ br label %for.cond, !dbg !22
+
+for.cond: ; preds = %for.inc, %entry
+ %0 = load i32, ptr %i, align 4, !dbg !26, !tbaa !24
+ %1 = load ptr, ptr %A.addr, align 8, !dbg !28, !tbaa !18
+ %2 = load i32, ptr %1, align 4, !dbg !29, !tbaa !24
+ %cmp = icmp slt i32 %0, %2, !dbg !30
+ br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !31, !prof !32
+
+for.cond.cleanup: ; preds = %for.cond
+ call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !33
+ br label %for.end
+
+for.body: ; preds = %for.cond
+ %3 = load ptr, ptr %A.addr, align 8, !dbg !34, !tbaa !18
+ %4 = load i32, ptr %i, align 4, !dbg !35, !tbaa !24
+ %idxprom = sext i32 %4 to i64, !dbg !34
+ %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !34
+ store i32 0, ptr %arrayidx, align 4, !dbg !36, !tbaa !24
+ br label %for.inc, !dbg !34
+
+for.inc: ; preds = %for.body
+ %5 = load i32, ptr %i, align 4, !dbg !37, !tbaa !24
+ %inc = add nsw i32 %5, 1, !dbg !37
+ store i32 %inc, ptr %i, align 4, !dbg !37, !tbaa !24
+ br label %for.cond, !dbg !33, !llvm.loop !38
+
+for.end: ; preds = %for.cond.cleanup
+ ret void, !dbg !40
+}
+
+; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
+
+; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
+
+; Function Attrs: nounwind uwtable
+define dso_local void @bar(ptr %A) #0 !dbg !41 {
+entry:
+ %A.addr = alloca ptr, align 8
+ %i = alloca i32, align 4
+ store ptr %A, ptr %A.addr, align 8, !tbaa !18
+ #dbg_declare(ptr %A.addr, !43, !DIExpression(), !46)
+ call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2, !dbg !47
+ #dbg_declare(ptr %i, !44, !DIExpression(), !48)
+ store i32 0, ptr %i, align 4, !dbg !48, !tbaa !24
+ br label %for.cond, !dbg !47
+
+for.cond: ; preds = %for.inc, %entry
+ %0 = load i32, ptr %i, align 4, !dbg !49, !tbaa !24
+ %1 = load ptr, ptr %A.addr, align 8, !dbg !51, !tbaa !18
+ %2 = load i32, ptr %1, align 4, !dbg !52, !tbaa !24
+ %cmp = icmp slt i32 %0, %2, !dbg !53
+ br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !54
+
+for.cond.cleanup: ; preds = %for.cond
+ call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !55
+ br label %for.end
+
+for.body: ; preds = %for.cond
+ %3 = load ptr, ptr %A.addr, align 8, !dbg !56, !tbaa !18
+ %4 = load i32, ptr %i, align 4, !dbg !57, !tbaa !24
+ %idxprom = sext i32 %4 to i64, !dbg !56
+ %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !56
+ store i32 0, ptr %arrayidx, align 4, !dbg !58, !tbaa !24
+ br label %for.inc, !dbg !56
+
+for.inc: ; preds = %for.body
+ %5 = load i32, ptr %i, align 4, !dbg !59, !tbaa !24
+ %inc = add nsw i32 %5, 1, !dbg !59
+ store i32 %inc, ptr %i, align 4, !dbg !59, !tbaa !24
+ br label %for.cond, !dbg !55, !llvm.loop !60
+
+for.end: ; preds = %for.cond.cleanup
+ ret void, !dbg !62
+}
+
+attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "denormal-fp-math"="ieee,ieee" "denormal-fp-math-f32"="ieee,ieee" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #2 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5}
+!llvm.ident = !{!6}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0 ([email protected]:llvm/llvm-project.git 1d5da8cd30fce1c0a2c2fa6ba656dbfaa36192c8)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+!1 = !DIFile(filename: "various_ir_values.c", directory: "/data/build/llvm-project")
+!2 = !{}
+!3 = !{i32 7, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{!"clang version 11.0.0 ([email protected]:llvm/llvm-project.git 1d5da8cd30fce1c0a2c2fa6ba656dbfaa36192c8)"}
+!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
+!8 = !DISubroutineType(types: !9)
+!9 = !{null, !10}
+!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
+!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!12 = !{!13, !14}
+!13 = !DILocalVariable(name: "A", arg: 1, scope: !7, file: !1, line: 1, type: !10)
+!14 = !DILocalVariable(name: "i", scope: !15, file: !1, line: 3, type: !11)
+!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3)
+!16 = distinct !DIAssignID()
+!17 = !DILocation(line: 1, column: 15, scope: !7)
+!18 = !{!19, !19, i64 0}
+!19 = !{!"any pointer", !20, i64 0}
+!20 = !{!"omnipotent char", !21, i64 0}
+!21 = !{!"Simple C/C++ TBAA"}
+!22 = !DILocation(line: 3, column: 8, scope: !15)
+!23 = !DILocation(line: 3, column: 12, scope: !15)
+!24 = !{!25, !25, i64 0}
+!25 = !{!"int", !20, i64 0}
+!26 = !DILocation(line: 3, column: 19, scope: !27)
+!27 = distinct !DILexicalBlock(scope: !15, file: !1, line: 3, column: 3)
+!28 = !DILocation(line: 3, column: 24, scope: !27)
+!29 = !DILocation(line: 3, column: 23, scope: !27)
+!30 = !DILocation(line: 3, column: 21, scope: !27)
+!31 = !DILocation(line: 3, column: 3, scope: !15)
+!32 = !{!"branch_weights", i32 1, i32 1048575}
+!33 = !DILocation(line: 3, column: 3, scope: !27)
+!34 = !DILocation(line: 4, column: 5, scope: !27)
+!35 = !DILocation(line: 4, column: 7, scope: !27)
+!36 = !DILocation(line: 4, column: 10, scope: !27)
+!37 = !DILocation(line: 3, column: 27, scope: !27)
+!38 = distinct !{!38, !31, !39}
+!39 = !DILocation(line: 4, column: 12, scope: !15)
+!40 = !DILocation(line: 5, column: 1, scope: !7)
+!41 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 7, type: !8, scopeLine: 7, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !42)
+!42 = !{!43, !44}
+!43 = !DILocalVariable(name: "A", arg: 1, scope: !41, file: !1, line: 7, type: !10)
+!44 = !DILocalVariable(name: "i", scope: !45, file: !1, line: 9, type: !11)
+!45 = distinct !DILexicalBlock(scope: !41, file: !1, line: 9, column: 3)
+!46 = !DILocation(line: 7, column: 15, scope: !41)
+!47 = !DILocation(line: 9, column: 8, scope: !45)
+!48 = !DILocation(line: 9, column: 12, scope: !45)
+!49 = !DILocation(line: 9, column: 19, scope: !50)
+!50 = distinct !DILexicalBlock(scope: !45, file: !1, line: 9, column: 3)
+!51 = !DILocation(line: 9, column: 24, scope: !50)
+!52 = !DILocation(line: 9, column: 23, scope: !50)
+!53 = !DILocation(line: 9, column: 21, scope: !50)
+!54 = !DILocation(line: 9, column: 3, scope: !45)
+!55 = !DILocation(line: 9, column: 3, scope: !50)
+!56 = !DILocation(line: 10, column: 5, scope: !50)
+!57 = !DILocation(line: 10, column: 7, scope: !50)
+!58 = !DILocation(line: 10, column: 10, scope: !50)
+!59 = !DILocation(line: 9, column: 27, scope: !50)
+!60 = distinct !{!60, !54, !61}
+!61 = !DILocation(line: 10, column: 12, scope: !45)
+!62 = !DILocation(line: 11, column: 1, scope: !41)
diff --git a/llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll.expected b/llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll.expected
new file mode 100644
index 00000000000000..1f9c37ccfbd889
--- /dev/null
+++ b/llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/various_ir_values_dbgrecords.ll.expected
@@ -0,0 +1,238 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; Just run it through opt, no passes needed.
+; RUN: opt < %s -S --write-experimental-debuginfo=true | FileCheck %s
+
+; ModuleID = 'various_ir_values.c'
+source_filename = "various_ir_values.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: nounwind uwtable
+define dso_local void @foo(ptr %A) #0 !dbg !7 {
+; CHECK-LABEL: @foo(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8, !DIAssignID [[DIASSIGNID16:![0-9]+]]
+; CHECK-NEXT: [[I:%.*]] = alloca i32, align 4
+; CHECK-NEXT: #dbg_assign(i1 undef, [[META13:![0-9]+]], !DIExpression(), [[DIASSIGNID16]], ptr [[A_ADDR]], !DIExpression(), [[META17:![0-9]+]])
+; CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8, !tbaa [[TBAA18:![0-9]+]]
+; CHECK-NEXT: #dbg_declare(ptr [[A_ADDR]], [[META13]], !DIExpression(), [[META17]])
+; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[I]]) #[[ATTR2:[0-9]+]], !dbg [[DBG22:![0-9]+]]
+; CHECK-NEXT: #dbg_declare(ptr [[I]], [[META14:![0-9]+]], !DIExpression(), [[META23:![0-9]+]])
+; CHECK-NEXT: store i32 0, ptr [[I]], align 4, !dbg [[META23]], !tbaa [[TBAA24:![0-9]+]]
+; CHECK-NEXT: br label [[FOR_COND:%.*]], !dbg [[DBG22]]
+; CHECK: for.cond:
+; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[I]], align 4, !dbg [[DBG26:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[A_ADDR]], align 8, !dbg [[DBG28:![0-9]+]], !tbaa [[TBAA18]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 4, !dbg [[DBG29:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP0]], [[TMP2]], !dbg [[DBG30:![0-9]+]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]], !dbg [[DBG31:![0-9]+]], !prof [[PROF32:![0-9]+]]
+; CHECK: for.cond.cleanup:
+; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[I]]) #[[ATTR2]], !dbg [[DBG33:![0-9]+]]
+; CHECK-NEXT: br label [[FOR_END:%.*]]
+; CHECK: for.body:
+; CHECK-NEXT: [[TMP3:%.*]] = load ptr, ptr [[A_ADDR]], align 8, !dbg [[DBG34:![0-9]+]], !tbaa [[TBAA18]]
+; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[I]], align 4, !dbg [[DBG35:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP4]] to i64, !dbg [[DBG34]]
+; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP3]], i64 [[IDXPROM]], !dbg [[DBG34]]
+; CHECK-NEXT: store i32 0, ptr [[ARRAYIDX]], align 4, !dbg [[DBG36:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: br label [[FOR_INC:%.*]], !dbg [[DBG34]]
+; CHECK: for.inc:
+; CHECK-NEXT: [[TMP5:%.*]] = load i32, ptr [[I]], align 4, !dbg [[DBG37:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP5]], 1, !dbg [[DBG37]]
+; CHECK-NEXT: store i32 [[INC]], ptr [[I]], align 4, !dbg [[DBG37]], !tbaa [[TBAA24]]
+; CHECK-NEXT: br label [[FOR_COND]], !dbg [[DBG33]], !llvm.loop [[LOOP38:![0-9]+]]
+; CHECK: for.end:
+; CHECK-NEXT: ret void, !dbg [[DBG40:![0-9]+]]
+;
+entry:
+ %A.addr = alloca ptr, align 8, !DIAssignID !16
+ %i = alloca i32, align 4
+ #dbg_assign(i1 undef, !13, !DIExpression(), !16, ptr %A.addr, !DIExpression(), !17)
+ store ptr %A, ptr %A.addr, align 8, !tbaa !18
+ #dbg_declare(ptr %A.addr, !13, !DIExpression(), !17)
+ call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2, !dbg !22
+ #dbg_declare(ptr %i, !14, !DIExpression(), !23)
+ store i32 0, ptr %i, align 4, !dbg !23, !tbaa !24
+ br label %for.cond, !dbg !22
+
+for.cond: ; preds = %for.inc, %entry
+ %0 = load i32, ptr %i, align 4, !dbg !26, !tbaa !24
+ %1 = load ptr, ptr %A.addr, align 8, !dbg !28, !tbaa !18
+ %2 = load i32, ptr %1, align 4, !dbg !29, !tbaa !24
+ %cmp = icmp slt i32 %0, %2, !dbg !30
+ br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !31, !prof !32
+
+for.cond.cleanup: ; preds = %for.cond
+ call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !33
+ br label %for.end
+
+for.body: ; preds = %for.cond
+ %3 = load ptr, ptr %A.addr, align 8, !dbg !34, !tbaa !18
+ %4 = load i32, ptr %i, align 4, !dbg !35, !tbaa !24
+ %idxprom = sext i32 %4 to i64, !dbg !34
+ %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !34
+ store i32 0, ptr %arrayidx, align 4, !dbg !36, !tbaa !24
+ br label %for.inc, !dbg !34
+
+for.inc: ; preds = %for.body
+ %5 = load i32, ptr %i, align 4, !dbg !37, !tbaa !24
+ %inc = add nsw i32 %5, 1, !dbg !37
+ store i32 %inc, ptr %i, align 4, !dbg !37, !tbaa !24
+ br label %for.cond, !dbg !33, !llvm.loop !38
+
+for.end: ; preds = %for.cond.cleanup
+ ret void, !dbg !40
+}
+
+; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
+
+; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
+
+; Function Attrs: nounwind uwtable
+define dso_local void @bar(ptr %A) #0 !dbg !41 {
+; CHECK-LABEL: @bar(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8
+; CHECK-NEXT: [[I:%.*]] = alloca i32, align 4
+; CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8, !tbaa [[TBAA18]]
+; CHECK-NEXT: #dbg_declare(ptr [[A_ADDR]], [[META43:![0-9]+]], !DIExpression(), [[META46:![0-9]+]])
+; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[I]]) #[[ATTR2]], !dbg [[DBG47:![0-9]+]]
+; CHECK-NEXT: #dbg_declare(ptr [[I]], [[META44:![0-9]+]], !DIExpression(), [[META48:![0-9]+]])
+; CHECK-NEXT: store i32 0, ptr [[I]], align 4, !dbg [[META48]], !tbaa [[TBAA24]]
+; CHECK-NEXT: br label [[FOR_COND:%.*]], !dbg [[DBG47]]
+; CHECK: for.cond:
+; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[I]], align 4, !dbg [[DBG49:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[A_ADDR]], align 8, !dbg [[DBG51:![0-9]+]], !tbaa [[TBAA18]]
+; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 4, !dbg [[DBG52:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP0]], [[TMP2]], !dbg [[DBG53:![0-9]+]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]], !dbg [[DBG54:![0-9]+]]
+; CHECK: for.cond.cleanup:
+; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[I]]) #[[ATTR2]], !dbg [[DBG55:![0-9]+]]
+; CHECK-NEXT: br label [[FOR_END:%.*]]
+; CHECK: for.body:
+; CHECK-NEXT: [[TMP3:%.*]] = load ptr, ptr [[A_ADDR]], align 8, !dbg [[DBG56:![0-9]+]], !tbaa [[TBAA18]]
+; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[I]], align 4, !dbg [[DBG57:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP4]] to i64, !dbg [[DBG56]]
+; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP3]], i64 [[IDXPROM]], !dbg [[DBG56]]
+; CHECK-NEXT: store i32 0, ptr [[ARRAYIDX]], align 4, !dbg [[DBG58:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: br label [[FOR_INC:%.*]], !dbg [[DBG56]]
+; CHECK: for.inc:
+; CHECK-NEXT: [[TMP5:%.*]] = load i32, ptr [[I]], align 4, !dbg [[DBG59:![0-9]+]], !tbaa [[TBAA24]]
+; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP5]], 1, !dbg [[DBG59]]
+; CHECK-NEXT: store i32 [[INC]], ptr [[I]], align 4, !dbg [[DBG59]], !tbaa [[TBAA24]]
+; CHECK-NEXT: br label [[FOR_COND]], !dbg [[DBG55]], !llvm.loop [[LOOP60:![0-9]+]]
+; CHECK: for.end:
+; CHECK-NEXT: ret void, !dbg [[DBG62:![0-9]+]]
+;
+entry:
+ %A.addr = alloca ptr, align 8
+ %i = alloca i32, align 4
+ store ptr %A, ptr %A.addr, align 8, !tbaa !18
+ #dbg_declare(ptr %A.addr, !43, !DIExpression(), !46)
+ call void @llvm.lifetime.start.p0(i64 4, ptr %i) #2, !dbg !47
+ #dbg_declare(ptr %i, !44, !DIExpression(), !48)
+ store i32 0, ptr %i, align 4, !dbg !48, !tbaa !24
+ br label %for.cond, !dbg !47
+
+for.cond: ; preds = %for.inc, %entry
+ %0 = load i32, ptr %i, align 4, !dbg !49, !tbaa !24
+ %1 = load ptr, ptr %A.addr, align 8, !dbg !51, !tbaa !18
+ %2 = load i32, ptr %1, align 4, !dbg !52, !tbaa !24
+ %cmp = icmp slt i32 %0, %2, !dbg !53
+ br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !54
+
+for.cond.cleanup: ; preds = %for.cond
+ call void @llvm.lifetime.end.p0(i64 4, ptr %i) #2, !dbg !55
+ br label %for.end
+
+for.body: ; preds = %for.cond
+ %3 = load ptr, ptr %A.addr, align 8, !dbg !56, !tbaa !18
+ %4 = load i32, ptr %i, align 4, !dbg !57, !tbaa !24
+ %idxprom = sext i32 %4 to i64, !dbg !56
+ %arrayidx = getelementptr inbounds i32, ptr %3, i64 %idxprom, !dbg !56
+ store i32 0, ptr %arrayidx, align 4, !dbg !58, !tbaa !24
+ br label %for.inc, !dbg !56
+
+for.inc: ; preds = %for.body
+ %5 = load i32, ptr %i, align 4, !dbg !59, !tbaa !24
+ %inc = add nsw i32 %5, 1, !dbg !59
+ store i32 %inc, ptr %i, align 4, !dbg !59, !tbaa !24
+ br label %for.cond, !dbg !55, !llvm.loop !60
+
+for.end: ; preds = %for.cond.cleanup
+ ret void, !dbg !62
+}
+
+attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "denormal-fp-math"="ieee,ieee" "denormal-fp-math-f32"="ieee,ieee" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #2 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5}
+!llvm.ident = !{!6}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0 ([email protected]:llvm/llvm-project.git 1d5da8cd30fce1c0a2c2fa6ba656dbfaa36192c8)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+!1 = !DIFile(filename: "various_ir_values.c", directory: "/data/build/llvm-project")
+!2 = !{}
+!3 = !{i32 7, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{!"clang version 11.0.0 ([email protected]:llvm/llvm-project.git 1d5da8cd...
[truncated]
|
nhaehnle
approved these changes
Apr 17, 2024
|
Not directly, although it would arguably be a stepping stone in that direction. The major difficulty is that we emit check lines gradually before processing everything. So we emit check lines while processing a function, which commits us to using e.g. |
|
Perhaps a more sensible way for this specific case would be a more advanced pattern match for this line - all of the metadata in the line |
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As we've added new IR elements, as described here and implemented here, we need the update_test_checks script to understand them. For the records themselves this is already done automatically, but their metadata arguments are not recognized as such due to lacking the
metadataprefix, which means they won't be checked by the script. The fix I've added was to add a check for all![0-9]+patterns as long as they are not at the start of a line (which avoids matching global values).I'm not well-acquainted with the update_test_checks scripts, so I'm not sure if this pattern is too broad for the update script's purposes; it appears to work without clashing with any existing patterns though.