1 ; RUN: llc < %s -mtriple=i686-linux -mattr=+sse2 | grep movsd | count 5 2 ; RUN: llc < %s -mtriple=i686-linux -mattr=+sse2 | grep movl | count 2 3 4 @atomic = global double 0.000000e+00 ; <double*> [#uses=1] 5 @atomic2 = global double 0.000000e+00 ; <double*> [#uses=1] 6 @anything = global i64 0 ; <i64*> [#uses=1] 7 @ioport = global i32 0 ; <i32*> [#uses=2] 8 9 define i16 @f(i64 %x, double %y) { 10 %b = bitcast i64 %x to double ; <double> [#uses=1] 11 store volatile double %b, double* @atomic ; one processor operation only 12 store volatile double 0.000000e+00, double* @atomic2 ; one processor operation only 13 %b2 = bitcast double %y to i64 ; <i64> [#uses=1] 14 store volatile i64 %b2, i64* @anything ; may transform to store of double 15 %l = load volatile i32, i32* @ioport ; must not narrow 16 %t = trunc i32 %l to i16 ; <i16> [#uses=1] 17 %l2 = load volatile i32, i32* @ioport ; must not narrow 18 %tmp = lshr i32 %l2, 16 ; <i32> [#uses=1] 19 %t2 = trunc i32 %tmp to i16 ; <i16> [#uses=1] 20 %f = add i16 %t, %t2 ; <i16> [#uses=1] 21 ret i16 %f 22 } 23
