diff options
| -rw-r--r-- | llvm/lib/Target/RISCV/RISCVISelLowering.cpp | 5 | ||||
| -rw-r--r-- | llvm/test/CodeGen/RISCV/tail-calls.ll | 4 |
2 files changed, 2 insertions, 7 deletions
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp index 6f5978fb3cb..86add6ecccf 100644 --- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp +++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp @@ -1946,7 +1946,6 @@ bool RISCVTargetLowering::isEligibleForTailCallOptimization( auto &Callee = CLI.Callee; auto CalleeCC = CLI.CallConv; - auto IsVarArg = CLI.IsVarArg; auto &Outs = CLI.Outs; auto &Caller = MF.getFunction(); auto CallerCC = Caller.getCallingConv(); @@ -1963,10 +1962,6 @@ bool RISCVTargetLowering::isEligibleForTailCallOptimization( if (Caller.hasFnAttribute("interrupt")) return false; - // Do not tail call opt functions with varargs. - if (IsVarArg) - return false; - // Do not tail call opt if the stack is used to pass parameters. if (CCInfo.getNextStackOffset() != 0) return false; diff --git a/llvm/test/CodeGen/RISCV/tail-calls.ll b/llvm/test/CodeGen/RISCV/tail-calls.ll index dea1521b05c..970f9ee31b3 100644 --- a/llvm/test/CodeGen/RISCV/tail-calls.ll +++ b/llvm/test/CodeGen/RISCV/tail-calls.ll @@ -47,14 +47,14 @@ entry: ret void } -; Do not tail call optimize functions with varargs. +; Do not tail call optimize functions with varargs passed by stack. declare i32 @callee_varargs(i32, ...) define void @caller_varargs(i32 %a, i32 %b) nounwind { ; CHECK-LABEL: caller_varargs ; CHECK-NOT: tail callee_varargs ; CHECK: call callee_varargs entry: - %call = tail call i32 (i32, ...) @callee_varargs(i32 %a, i32 %b, i32 %b, i32 %a) + %call = tail call i32 (i32, ...) @callee_varargs(i32 %a, i32 %b, i32 %b, i32 %a, i32 %a, i32 %b, i32 %b, i32 %a, i32 %a) ret void } |
