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Verifier: Check debug info intrinsic arguments

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Verify that debug info intrinsic arguments are valid.  (These checks
will not recurse through the full debug info graph, so they don't need
to be cordoned of in `DebugInfoVerifier`.)

With those checks in place, changing the `DbgIntrinsicInst` accessors to
downcast to `MDLocalVariable` and `MDExpression` is natural (added isa
specializations in `Metadata.h` to support this).

Added tests to `test/Verifier` for the new -verify checks, and fixed the
debug info in all the in-tree tests.

If you have out-of-tree testcases that have started to fail to -verify,
hopefully the verify checks are helpful.  The most likely problem is
that the expression argument is `!{}` (instead of `!MDExpression()`).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232296 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-03-15 01:21:30 +00:00
parent 48248ac8a0
commit 08e687e684
30 changed files with 210 additions and 88 deletions
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test/Transforms/SLPVectorizer/X86/debug_info.ll
+5 -5
View File
@@ -23,11 +23,11 @@ target triple = "x86_64-apple-macosx10.7.0"
define i32 @depth(double* nocapture %A, i32 %m) #0 {
entry:
tail call void @llvm.dbg.value(metadata double* %A, i64 0, metadata !12, metadata !{}), !dbg !19
tail call void @llvm.dbg.value(metadata i32 %m, i64 0, metadata !13, metadata !{}), !dbg !19
tail call void @llvm.dbg.value(metadata i32 00, i64 0, metadata !14, metadata !{}), !dbg !21
tail call void @llvm.dbg.value(metadata i32 02, i64 0, metadata !15, metadata !{}), !dbg !21
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !16, metadata !{}), !dbg !23
tail call void @llvm.dbg.value(metadata double* %A, i64 0, metadata !12, metadata !MDExpression()), !dbg !19
tail call void @llvm.dbg.value(metadata i32 %m, i64 0, metadata !13, metadata !MDExpression()), !dbg !19
tail call void @llvm.dbg.value(metadata i32 00, i64 0, metadata !14, metadata !MDExpression()), !dbg !21
tail call void @llvm.dbg.value(metadata i32 02, i64 0, metadata !15, metadata !MDExpression()), !dbg !21
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !16, metadata !MDExpression()), !dbg !23
%cmp8 = icmp sgt i32 %m, 0, !dbg !23
br i1 %cmp8, label %for.body.lr.ph, label %for.end, !dbg !23