ranjith kumar <ranjit_kumar_b4u@xxxxxxxxxxx> writes: > I know xmmintrin.h header file provides functions > called intrinstics to exploit simd features of a > processor. > Can anyone tell at which compilation phase (of gcc), > each of those intrinstics(functions) is replaced by a > single assembly instruction. When the tree data structure is expanded into RTL, each call to a recognized intrinsic function is replaced with one or more RTL instructions. A single RTL instruction roughly corresponds to a single assembly language instruction. (This answer only applies to gcc 4.0 and later). Ian
