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Lanai: Use TableGen to set libcall calling conventions #146080

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Merged
merged 1 commit into from
Jul 8, 2025
Merged

Lanai: Use TableGen to set libcall calling conventions #146080

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12 changes: 12 additions & 0 deletions llvm/include/llvm/IR/RuntimeLibcalls.td
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Original file line number Diff line number Diff line change
Expand Up @@ -1389,6 +1389,18 @@ def __hexagon_fast2_sqrtdf2 : RuntimeLibcallImpl<SQRT_F64>;
def __hexagon_memcpy_likely_aligned_min32bytes_mult8bytes
: RuntimeLibcallImpl<HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES>;

//===----------------------------------------------------------------------===//
// Lanai Runtime Libcalls
//===----------------------------------------------------------------------===//

def isLanai : RuntimeLibcallPredicate<"TT.getArch() == Triple::lanai">;

// Use fast calling convention for library functions.
def LanaiSystemLibrary
: SystemRuntimeLibrary<isLanai, (add DefaultRuntimeLibcallImpls)> {
let DefaultLibcallCallingConv = FASTCC;
}

//===----------------------------------------------------------------------===//
// Mips16 Runtime Libcalls
//===----------------------------------------------------------------------===//
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4 changes: 0 additions & 4 deletions llvm/lib/Target/Lanai/LanaiISelLowering.cpp
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Expand Up @@ -150,10 +150,6 @@ LanaiTargetLowering::LanaiTargetLowering(const TargetMachine &TM,
// statements. Re-evaluate this on new benchmarks.
setMinimumJumpTableEntries(100);

// Use fast calling convention for library functions.
for (RTLIB::LibcallImpl LC : RTLIB::libcall_impls())
setLibcallImplCallingConv(LC, CallingConv::Fast);

MaxStoresPerMemset = 16; // For @llvm.memset -> sequence of stores
MaxStoresPerMemsetOptSize = 8;
MaxStoresPerMemcpy = 16; // For @llvm.memcpy -> sequence of stores
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