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
4
; These transforms are turned off for volatile loads and stores.
5
; Check that they weren't turned off for all loads and stores!
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]
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]