Add ARM RTABI aliases for half-precision conversions

The ARM RTABI defines these functions as __aeabi_h2f, __aeabi_f2h and
__aeabi_d2h, so we need aliases for them.

llvm-svn: 249559

compiler-rt/lib/builtins/extendhfsf2.c

@@ -12,6 +12,8 @@
 #define DST_SINGLE
 #include "fp_extend_impl.inc"
 
+ARM_EABI_FNALIAS(h2f, extendhfsf2)
+
 // Use a forwarding definition and noinline to implement a poor man's alias,
 // as there isn't a good cross-platform way of defining one.
 COMPILER_RT_ABI NOINLINE float __extendhfsf2(uint16_t a) {

compiler-rt/lib/builtins/truncdfhf2.c

@@ -11,6 +11,8 @@
 #define DST_HALF
 #include "fp_trunc_impl.inc"
 
+ARM_EABI_FNALIAS(d2h, truncdfhf2)
+
 COMPILER_RT_ABI uint16_t __truncdfhf2(double a) {
     return __truncXfYf2__(a);
 }

compiler-rt/lib/builtins/truncsfhf2.c

@@ -11,6 +11,8 @@
 #define DST_HALF
 #include "fp_trunc_impl.inc"
 
+ARM_EABI_FNALIAS(f2h, truncsfhf2)
+
 // Use a forwarding definition and noinline to implement a poor man's alias,
 // as there isn't a good cross-platform way of defining one.
 COMPILER_RT_ABI NOINLINE uint16_t __truncsfhf2(float a) {