mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
36a0947820
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
1006 B
LLVM
23 lines
1006 B
LLVM
; RUN: llc < %s -march=x86 -mattr=+sse2 | grep movsd | count 5
|
|
; RUN: llc < %s -march=x86 -mattr=+sse2 | grep movl | count 2
|
|
|
|
@atomic = global double 0.000000e+00 ; <double*> [#uses=1]
|
|
@atomic2 = global double 0.000000e+00 ; <double*> [#uses=1]
|
|
@anything = global i64 0 ; <i64*> [#uses=1]
|
|
@ioport = global i32 0 ; <i32*> [#uses=2]
|
|
|
|
define i16 @f(i64 %x, double %y) {
|
|
%b = bitcast i64 %x to double ; <double> [#uses=1]
|
|
volatile store double %b, double* @atomic ; one processor operation only
|
|
volatile store double 0.000000e+00, double* @atomic2 ; one processor operation only
|
|
%b2 = bitcast double %y to i64 ; <i64> [#uses=1]
|
|
volatile store i64 %b2, i64* @anything ; may transform to store of double
|
|
%l = volatile load i32* @ioport ; must not narrow
|
|
%t = trunc i32 %l to i16 ; <i16> [#uses=1]
|
|
%l2 = volatile load i32* @ioport ; must not narrow
|
|
%tmp = lshr i32 %l2, 16 ; <i32> [#uses=1]
|
|
%t2 = trunc i32 %tmp to i16 ; <i16> [#uses=1]
|
|
%f = add i16 %t, %t2 ; <i16> [#uses=1]
|
|
ret i16 %f
|
|
}
|