Teach llvm-pdbutil to dump types from object files.

llvm-svn: 319859

3 files changed, 159 insertions, 0 deletions

diff --git a/llvm/test/DebugInfo/PDB/Inputs/obj-hashes-1.yaml b/llvm/test/DebugInfo/PDB/Inputs/obj-hashes-1.yaml
new file mode 100644
index 00000000000..80d7b3c87b6
--- /dev/null
+++ b/llvm/test/DebugInfo/PDB/Inputs/obj-hashes-1.yaml
@@ -0,0 +1,50 @@
+--- !COFF
+header:
+  Machine:         IMAGE_FILE_MACHINE_I386
+  Characteristics: [  ]
+sections:
+  - Name:            '.debug$T'
+    Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
+    Alignment:       4
+    Types:
+      # char**
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    272
+          Attrs:           32778
+      # int**
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    372
+          Attrs:           32778
+      # int***
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    4097
+          Attrs:           32778
+      # (char**, int***)
+      - Kind:            LF_ARGLIST
+        ArgList:
+          ArgIndices:      [ 4096, 4098 ]
+      # int** (char**, int***)
+      - Kind:            LF_PROCEDURE
+        Procedure:
+          ReturnType:      4097
+          CallConv:        NearC
+          Options:         [ None ]
+          ParameterCount:  2
+          ArgumentList:    4099
+symbols:
+  - Name:            '.debug$T'
+    Value:           0
+    SectionNumber:   6
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_NULL
+    StorageClass:    IMAGE_SYM_CLASS_STATIC
+    SectionDefinition:
+      Length:          68
+      NumberOfRelocations: 0
+      NumberOfLinenumbers: 0
+      CheckSum:        2189213922
+      Number:          6
+...
diff --git a/llvm/test/DebugInfo/PDB/Inputs/obj-hashes-2.yaml b/llvm/test/DebugInfo/PDB/Inputs/obj-hashes-2.yaml
new file mode 100644
index 00000000000..1c0aa2cc175
--- /dev/null
+++ b/llvm/test/DebugInfo/PDB/Inputs/obj-hashes-2.yaml
@@ -0,0 +1,55 @@
+--- !COFF
+header:
+  Machine:         IMAGE_FILE_MACHINE_I386
+  Characteristics: [  ]
+sections:
+  - Name:            '.debug$T'
+    Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
+    Alignment:       4
+    Types:
+      # int**
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    372
+          Attrs:           32778
+      # int***
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    4096
+          Attrs:           32778
+      # char**
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    272
+          Attrs:           32778
+      # double**
+      - Kind:            LF_POINTER
+        Pointer:
+          ReferentType:    321
+          Attrs:           32778
+      # (char**, int***)
+      - Kind:            LF_ARGLIST
+        ArgList:
+          ArgIndices:      [ 4098, 4097 ]
+      # int** (char**, int***)
+      - Kind:            LF_PROCEDURE
+        Procedure:
+          ReturnType:      4096
+          CallConv:        NearC
+          Options:         [ None ]
+          ParameterCount:  2
+          ArgumentList:    4100
+symbols:
+  - Name:            '.debug$T'
+    Value:           0
+    SectionNumber:   6
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_NULL
+    StorageClass:    IMAGE_SYM_CLASS_STATIC
+    SectionDefinition:
+      Length:          68
+      NumberOfRelocations: 0
+      NumberOfLinenumbers: 0
+      CheckSum:        2189213922
+      Number:          6
+...
diff --git a/llvm/test/DebugInfo/PDB/obj-globalhash.test b/llvm/test/DebugInfo/PDB/obj-globalhash.test
new file mode 100644
index 00000000000..629192905a4
--- /dev/null
+++ b/llvm/test/DebugInfo/PDB/obj-globalhash.test
@@ -0,0 +1,54 @@
+RUN: yaml2obj %p/Inputs/obj-hashes-1.yaml > %T/obj-hashes-1.obj
+RUN: yaml2obj %p/Inputs/obj-hashes-2.yaml > %T/obj-hashes-2.obj
+RUN: echo obj-hashes-1 > %T/hashes-combined.out
+RUN: llvm-pdbutil dump -type-extras %T/obj-hashes-1.obj >> %T/hashes-combined.out
+RUN: echo obj-hashes-2 >> %T/hashes-combined.out
+RUN: llvm-pdbutil dump -type-extras %T/obj-hashes-2.obj >> %T/hashes-combined.out
+RUN: cat %T/hashes-combined.out | FileCheck --check-prefix=CHECK-ONE %s
+RUN: cat %T/hashes-combined.out | FileCheck --check-prefix=CHECK-TWO %s
+RUN: cat %T/hashes-combined.out | FileCheck --check-prefix=CHECK-THREE %s
+RUN: cat %T/hashes-combined.out | FileCheck --check-prefix=CHECK-FOUR %s
+RUN: cat %T/hashes-combined.out | FileCheck --check-prefix=CHECK-FIVE %s
+RUN: cat %T/hashes-combined.out | FileCheck --check-prefix=CHECK-SIX %s
+
+; char**.  Both the local and global hashes should be the same, since the only
+; back-references are for simple types which have fixed indices.
+CHECK-ONE:   obj-hashes-1
+CHECK-ONE:   TI: 0x1001, LocalHash: 8C051421, GlobalHash: 8B2BA87CC27BF9D290A31A6070FA296AAA577E53
+CHECK-ONE:   obj-hashes-2
+CHECK-ONE:   TI: 0x1000, LocalHash: 8C051421, GlobalHash: 8B2BA87CC27BF9D290A31A6070FA296AAA577E53
+
+; int**.  Same as char**, both the local and global hashes should be the same.
+CHECK-TWO:   obj-hashes-1
+CHECK-TWO:   TI: 0x1000, LocalHash: 8A50855E, GlobalHash: 1522A98D88FAF71B618D97BCAC2B89A424EC4805
+CHECK-TWO:   obj-hashes-2
+CHECK-TWO:   TI: 0x1002, LocalHash: 8A50855E, GlobalHash: 1522A98D88FAF71B618D97BCAC2B89A424EC4805
+
+; int***. Different local hashes, since the referent type (int**) is not at the
+; same TypeIndex in both streams.  Same global hash, since they represent the
+; same record.
+CHECK-THREE: obj-hashes-1
+CHECK-THREE: TI: 0x1002, LocalHash: C1B0E34B, GlobalHash: EC11CE9F78D6BF61F8D913A9E2C98293782A7EB4
+CHECK-THREE: obj-hashes-2
+CHECK-THREE: TI: 0x1001, LocalHash: 813E462C, GlobalHash: EC11CE9F78D6BF61F8D913A9E2C98293782A7EB4
+
+; arg list (char**, int***).  Different local hashes, since the parameter types
+; both occur at different TypeIndices in their respective input streams.  Same
+; global hash, since the global hash of all referenced types is the same in
+; both streams.
+CHECK-FOUR:  obj-hashes-1
+CHECK-FOUR:  TI: 0x1003, LocalHash: F9B7D117, GlobalHash: 1088AD64CEBC88D9E015058A159516AF20B79286
+CHECK-FOUR:  obj-hashes-2
+CHECK-FOUR:  TI: 0x1004, LocalHash: 29800A81, GlobalHash: 1088AD64CEBC88D9E015058A159516AF20B79286
+
+; double**.  This is only in stream 2, as a means to throw off the indexing.
+CHECK-FIVE:  obj-hashes-1
+CHECK-FIVE:  obj-hashes-2
+CHECK-FIVE:  TI: 0x1003, LocalHash: A8EEF56D, GlobalHash: 7803BBDB2947EF46BEA2310D102BD08F68315506
+
+; int** (char**, int***).  For the same logic as described in previous records,
+; these two records have the same global hash but different local hashes.
+CHECK-SIX:   obj-hashes-1
+CHECK-SIX:   TI: 0x1004, LocalHash: 25FFC8CB, GlobalHash: 457ABCB8AB70407594B5D72BF471B6BDECC99BC9
+CHECK-SIX:   obj-hashes-2
+CHECK-SIX:   TI: 0x1005, LocalHash: F34B0F86, GlobalHash: 457ABCB8AB70407594B5D72BF471B6BDECC99BC9