RTABI chapter 4.3.4 specifies __eabi_mem* calls. Specifically, __eabi_memset accepts parameters (ptr, size, value) in a different order than GNU's memset (ptr, value, size), therefore the special lowering in AAPCS mode. Implementation by Evzen Muller.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131868 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index e9a9963..5c1cded 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -396,6 +396,12 @@
setLibcallCallingConv(RTLIB::UDIV_I8, CallingConv::ARM_AAPCS);
setLibcallCallingConv(RTLIB::UDIV_I16, CallingConv::ARM_AAPCS);
setLibcallCallingConv(RTLIB::UDIV_I32, CallingConv::ARM_AAPCS);
+
+ // Memory operations
+ // RTABI chapter 4.3.4
+ setLibcallName(RTLIB::MEMCPY, "__aeabi_memcpy");
+ setLibcallName(RTLIB::MEMMOVE, "__aeabi_memmove");
+ setLibcallName(RTLIB::MEMSET, "__aeabi_memset");
}
if (Subtarget->isThumb1Only())