[llvm] r201747 - Add support for hashing DW_FORM_sdata and a small testcase.
Eric Christopher
echristo at gmail.com
Wed Feb 19 16:54:41 PST 2014
Author: echristo
Date: Wed Feb 19 18:54:40 2014
New Revision: 201747
URL: http://llvm.org/viewvc/llvm-project?rev=201747&view=rev
Log:
Add support for hashing DW_FORM_sdata and a small testcase.
Modified:
llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp
llvm/trunk/unittests/CodeGen/DIEHashTest.cpp
Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp?rev=201747&r1=201746&r2=201747&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp Wed Feb 19 18:54:40 2014
@@ -306,6 +306,7 @@ void DIEHash::hashAttribute(AttrEntry At
case dwarf::DW_FORM_data4:
case dwarf::DW_FORM_data8:
case dwarf::DW_FORM_udata:
+ case dwarf::DW_FORM_sdata:
addULEB128('A');
addULEB128(Attribute);
addULEB128(dwarf::DW_FORM_sdata);
Modified: llvm/trunk/unittests/CodeGen/DIEHashTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/CodeGen/DIEHashTest.cpp?rev=201747&r1=201746&r2=201747&view=diff
==============================================================================
--- llvm/trunk/unittests/CodeGen/DIEHashTest.cpp (original)
+++ llvm/trunk/unittests/CodeGen/DIEHashTest.cpp Wed Feb 19 18:54:40 2014
@@ -549,4 +549,51 @@ TEST(DIEHashTest, MemberFuncFlag) {
// The exact same hash GCC produces for this DIE.
ASSERT_EQ(0x8f78211ddce3df10ULL, MD5Res);
}
+
+// Derived from:
+// struct A {
+// const static float PI = 3.14f;
+// };
+// A a;
+TEST(DIEHashTest, MemberBlock) {
+ DIE A(dwarf::DW_TAG_structure_type);
+ DIEInteger One(1);
+ DIEString AStr(&One, "A");
+ A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
+ A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
+ A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
+ A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
+
+ DIEInteger Four(4);
+ DIEInteger Five(5);
+ DIEString FStr(&One, "int");
+ DIE *IntTyDIE = new DIE(dwarf::DW_TAG_base_type);
+ IntTyDIE->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
+ IntTyDIE->addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
+ IntTyDIE->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FStr);
+
+ DIEEntry IntTy(IntTyDIE);
+ DIE *PITyDIE = new DIE(dwarf::DW_TAG_const_type);
+ PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntTy);
+
+ DIEEntry PITy(PITyDIE);
+ DIE *PI = new DIE(dwarf::DW_TAG_member);
+ DIEString PIStr(&One, "PI");
+ DIEInteger Two(2);
+ DIEInteger NegThree(-3);
+ PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &PIStr);
+ PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
+ PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
+ PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PITy);
+ PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
+ PI->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
+ PI->addValue(dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, &NegThree);
+
+ A.addChild(PI);
+
+ A.dump();
+
+ uint64_t MD5Res = DIEHash().computeTypeSignature(A);
+ ASSERT_EQ(0x9a216000dd3788a7ULL, MD5Res);
+}
}
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