; RUN: llc < %s -mtriple=i686-linux -mattr=+sse2 | grep movsd | count 5 ; RUN: llc < %s -mtriple=i686-linux -mattr=+sse2 | grep movl | count 2 @atomic = global double 0.000000e+00 ; [#uses=1] @atomic2 = global double 0.000000e+00 ; [#uses=1] @anything = global i64 0 ; [#uses=1] @ioport = global i32 0 ; [#uses=2] define i16 @f(i64 %x, double %y) { %b = bitcast i64 %x to double ; [#uses=1] store volatile double %b, double* @atomic ; one processor operation only store volatile double 0.000000e+00, double* @atomic2 ; one processor operation only %b2 = bitcast double %y to i64 ; [#uses=1] store volatile i64 %b2, i64* @anything ; may transform to store of double %l = load volatile i32, i32* @ioport ; must not narrow %t = trunc i32 %l to i16 ; [#uses=1] %l2 = load volatile i32, i32* @ioport ; must not narrow %tmp = lshr i32 %l2, 16 ; [#uses=1] %t2 = trunc i32 %tmp to i16 ; [#uses=1] %f = add i16 %t, %t2 ; [#uses=1] ret i16 %f }