[Hashing] Remove Clang<=11 -fno-pic workaround (#110952)
If the LLVM build and an API user have different
`(!defined(__clang__) || __clang_major__ > 11)` values, we will have a
non-benign ODR violation and some users prefer a clear error to silent
breakage.
The Clang<=11 -fno-pic x86-64 workaround is likely not useful anyway
because builds are mostly PIC (`POSITION_INDEPENDENT_CODE` or
LLVM_ENABLE_PIC).
diff --git a/llvm/include/llvm/ADT/Hashing.h b/llvm/include/llvm/ADT/Hashing.h
index 1099662..17dcf31 100644
--- a/llvm/include/llvm/ADT/Hashing.h
+++ b/llvm/include/llvm/ADT/Hashing.h
@@ -311,10 +311,7 @@
/// depend on the particular hash values. On platforms without ASLR, this is
/// still likely non-deterministic per build.
inline uint64_t get_execution_seed() {
- // Work around x86-64 negative offset folding for old Clang -fno-pic
- // https://reviews.llvm.org/D93931
-#if LLVM_ENABLE_ABI_BREAKING_CHECKS && \
- (!defined(__clang__) || __clang_major__ > 11)
+#if LLVM_ENABLE_ABI_BREAKING_CHECKS
return static_cast<uint64_t>(
reinterpret_cast<uintptr_t>(&install_fatal_error_handler));
#else
