DebugInfo: Support up to 2^16 arguments in a subprogram
Support up to 2^16 arguments to a function. If we do hit the limit,
assert out rather than restarting at 0 as we've done historically.
This fixes PR23332. A clang test will follow.
llvm-svn: 235955
diff --git a/llvm/unittests/IR/MetadataTest.cpp b/llvm/unittests/IR/MetadataTest.cpp
index cb882e7..60d2506 100644
--- a/llvm/unittests/IR/MetadataTest.cpp
+++ b/llvm/unittests/IR/MetadataTest.cpp
@@ -1849,6 +1849,26 @@
EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
}
+TEST_F(MDLocalVariableTest, getArg256) {
+ EXPECT_EQ(255u, MDLocalVariable::get(Context, dwarf::DW_TAG_arg_variable,
+ getSubprogram(), "", getFile(), 0,
+ nullptr, 255, 0)
+ ->getArg());
+ EXPECT_EQ(256u, MDLocalVariable::get(Context, dwarf::DW_TAG_arg_variable,
+ getSubprogram(), "", getFile(), 0,
+ nullptr, 256, 0)
+ ->getArg());
+ EXPECT_EQ(257u, MDLocalVariable::get(Context, dwarf::DW_TAG_arg_variable,
+ getSubprogram(), "", getFile(), 0,
+ nullptr, 257, 0)
+ ->getArg());
+ unsigned Max = UINT16_MAX;
+ EXPECT_EQ(Max, MDLocalVariable::get(Context, dwarf::DW_TAG_arg_variable,
+ getSubprogram(), "", getFile(), 0,
+ nullptr, Max, 0)
+ ->getArg());
+}
+
typedef MetadataTest MDExpressionTest;
TEST_F(MDExpressionTest, get) {