[llvm] [llvm-symbolizer] Make symbolizer parse section relative syntax (PR #168524)

[James Henderson via llvm-commits]

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@@ -51,6 +52,37 @@ LLVMSymbolizer::LLVMSymbolizer(const Options &Opts)
 
 LLVMSymbolizer::~LLVMSymbolizer() = default;
 
+Expected<uint64_t>
+LLVMSymbolizer::getXCOFFSectionAddress(StringRef ModulePath,
+                                       XCOFF::SectionTypeFlags SectionTypeFlag,
+                                       StringRef SectionTypeName) {
+  // Check the cache first.
+  auto &Entry = XCOFFSectionBaseCache[ModulePath][SectionTypeFlag];
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jh7370 wrote:

Not addressed? Don't use `auto` for `Entry`.

https://github.com/llvm/llvm-project/pull/168524