| Dan Gohman | 0a06310 | 2009-09-08 23:54:48 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=x86 | not grep movsd |
| 2 | ; RUN: llc < %s -march=x86 | grep movw |
| 3 | ; RUN: llc < %s -march=x86 | grep addw |
| Duncan Sands | 2418bec | 2008-06-13 19:07:40 +0000 | [diff] [blame] | 4 | ; These transforms are turned off for volatile loads and stores. |
| 5 | ; Check that they weren't turned off for all loads and stores! |
| 6 | |
| 7 | @atomic = global double 0.000000e+00 ; <double*> [#uses=1] |
| 8 | @atomic2 = global double 0.000000e+00 ; <double*> [#uses=1] |
| 9 | @ioport = global i32 0 ; <i32*> [#uses=1] |
| 10 | @ioport2 = global i32 0 ; <i32*> [#uses=1] |
| 11 | |
| 12 | define i16 @f(i64 %x) { |
| 13 | %b = bitcast i64 %x to double ; <double> [#uses=1] |
| 14 | store double %b, double* @atomic |
| 15 | store double 0.000000e+00, double* @atomic2 |
| 16 | %l = load i32* @ioport ; <i32> [#uses=1] |
| 17 | %t = trunc i32 %l to i16 ; <i16> [#uses=1] |
| 18 | %l2 = load i32* @ioport2 ; <i32> [#uses=1] |
| 19 | %tmp = lshr i32 %l2, 16 ; <i32> [#uses=1] |
| 20 | %t2 = trunc i32 %tmp to i16 ; <i16> [#uses=1] |
| 21 | %f = add i16 %t, %t2 ; <i16> [#uses=1] |
| 22 | ret i16 %f |
| 23 | } |