1 ; RUN: llc < %s -march=x86 | FileCheck %s 2 ; These transforms are turned off for load volatiles and stores. 3 ; Check that they weren't turned off for all loads and stores! 4 ; CHECK-LABEL: f: 5 ; CHECK-NOT: movsd 6 ; CHECK: movw 7 ; CHECK: addw 8 9 @atomic = global double 0.000000e+00 ; <double*> [#uses=1] 10 @atomic2 = global double 0.000000e+00 ; <double*> [#uses=1] 11 @ioport = global i32 0 ; <i32*> [#uses=1] 12 @ioport2 = global i32 0 ; <i32*> [#uses=1] 13 14 define i16 @f(i64 %x) { 15 %b = bitcast i64 %x to double ; <double> [#uses=1] 16 store double %b, double* @atomic 17 store double 0.000000e+00, double* @atomic2 18 %l = load i32, i32* @ioport ; <i32> [#uses=1] 19 %t = trunc i32 %l to i16 ; <i16> [#uses=1] 20 %l2 = load i32, i32* @ioport2 ; <i32> [#uses=1] 21 %tmp = lshr i32 %l2, 16 ; <i32> [#uses=1] 22 %t2 = trunc i32 %tmp to i16 ; <i16> [#uses=1] 23 %f = add i16 %t, %t2 ; <i16> [#uses=1] 24 ret i16 %f 25 } 26
