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-rw-r--r--llvm/lib/CodeGen/TargetLoweringBase.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index 543c12eebb4..66ee16654ea 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -114,6 +114,10 @@ static void InitLibcallNames(const char **Names, const Triple &TT) {
// FIXME: What about other targets?
Names[RTLIB::FPEXT_F16_F32] = "__extendhfsf2";
Names[RTLIB::FPROUND_F32_F16] = "__truncsfhf2";
+
+ // Darwin 10 and higher has an optimized __bzero.
+ if (!TT.isMacOSX() || !TT.isMacOSXVersionLT(10, 6))
+ Names[RTLIB::BZERO] = "__bzero";
} else {
Names[RTLIB::FPEXT_F16_F32] = "__gnu_h2f_ieee";
Names[RTLIB::FPROUND_F32_F16] = "__gnu_f2h_ieee";
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