SDAG: Merge the meat of two ExpandAtomic implementations.
The copies already diverged, don't let them become any worse. Reduce
redundancy in code with a little macro metaprogramming.
llvm-svn: 231401
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index 07f9f66..250b229 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -664,6 +664,44 @@
return UNKNOWN_LIBCALL;
}
+RTLIB::Libcall RTLIB::getATOMIC(unsigned Opc, MVT VT) {
+#define OP_TO_LIBCALL(Name, Enum) \
+ case Name: \
+ switch (VT.SimpleTy) { \
+ default: \
+ return UNKNOWN_LIBCALL; \
+ case MVT::i8: \
+ return Enum##_1; \
+ case MVT::i16: \
+ return Enum##_2; \
+ case MVT::i32: \
+ return Enum##_4; \
+ case MVT::i64: \
+ return Enum##_8; \
+ case MVT::i128: \
+ return Enum##_16; \
+ }
+
+ switch (Opc) {
+ OP_TO_LIBCALL(ISD::ATOMIC_SWAP, SYNC_LOCK_TEST_AND_SET)
+ OP_TO_LIBCALL(ISD::ATOMIC_CMP_SWAP, SYNC_VAL_COMPARE_AND_SWAP)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_ADD, SYNC_FETCH_AND_ADD)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_SUB, SYNC_FETCH_AND_SUB)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_AND, SYNC_FETCH_AND_AND)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_OR, SYNC_FETCH_AND_OR)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_XOR, SYNC_FETCH_AND_XOR)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_NAND, SYNC_FETCH_AND_NAND)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_MAX, SYNC_FETCH_AND_MAX)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_UMAX, SYNC_FETCH_AND_UMAX)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_MIN, SYNC_FETCH_AND_MIN)
+ OP_TO_LIBCALL(ISD::ATOMIC_LOAD_UMIN, SYNC_FETCH_AND_UMIN)
+ }
+
+#undef OP_TO_LIBCALL
+
+ return UNKNOWN_LIBCALL;
+}
+
/// InitCmpLibcallCCs - Set default comparison libcall CC.
///
static void InitCmpLibcallCCs(ISD::CondCode *CCs) {