xref: /llvm-project/llvm/test/CodeGen/DirectX/reversebits.ll (revision 011b618644113996e2c0a8e57db40f89d20878e3) 
1; RUN: opt -S -scalarizer -dxil-op-lower -mtriple=dxil-pc-shadermodel6.3-library %s | FileCheck %s
2
3; Make sure dxil operation function calls for reversebits are generated for all integer types.
4
5; Function Attrs: nounwind
6define noundef i16 @test_bitreverse_short(i16 noundef %a) {
7entry:
8; CHECK:call i16 @dx.op.unary.i16(i32 30, i16 %{{.*}}) #[[#ATTR:]]
9  %elt.bitreverse = call i16 @llvm.bitreverse.i16(i16 %a)
10  ret i16 %elt.bitreverse
11}
12
13; Function Attrs: nounwind
14define noundef i32 @test_bitreverse_int(i32 noundef %a) {
15entry:
16; CHECK:call i32 @dx.op.unary.i32(i32 30, i32 %{{.*}}) #[[#ATTR]]
17  %elt.bitreverse = call i32 @llvm.bitreverse.i32(i32 %a)
18  ret i32 %elt.bitreverse
19}
20
21; Function Attrs: nounwind
22define noundef i64 @test_bitreverse_long(i64 noundef %a) {
23entry:
24; CHECK:call i64 @dx.op.unary.i64(i32 30, i64 %{{.*}}) #[[#ATTR]]
25  %elt.bitreverse = call i64 @llvm.bitreverse.i64(i64 %a)
26  ret i64 %elt.bitreverse
27}
28
29define noundef <4 x i32> @bitreverse_int324(<4 x i32> noundef %a) #0 {
30entry:
31  ; CHECK: [[ee0:%.*]] = extractelement <4 x i32> %a, i64 0
32  ; CHECK: [[ie0:%.*]] = call i32 @dx.op.unary.i32(i32 30, i32 [[ee0]]) #[[#ATTR]]
33  ; CHECK: [[ee1:%.*]] = extractelement <4 x i32> %a, i64 1
34  ; CHECK: [[ie1:%.*]] = call i32 @dx.op.unary.i32(i32 30, i32 [[ee1]]) #[[#ATTR]]
35  ; CHECK: [[ee2:%.*]] = extractelement <4 x i32> %a, i64 2
36  ; CHECK: [[ie2:%.*]] = call i32 @dx.op.unary.i32(i32 30, i32 [[ee2]]) #[[#ATTR]]
37  ; CHECK: [[ee3:%.*]] = extractelement <4 x i32> %a, i64 3
38  ; CHECK: [[ie3:%.*]] = call i32 @dx.op.unary.i32(i32 30, i32 [[ee3]]) #[[#ATTR]]
39  ; CHECK: insertelement <4 x i32> poison, i32 [[ie0]], i64 0
40  ; CHECK: insertelement <4 x i32> %{{.*}}, i32 [[ie1]], i64 1
41  ; CHECK: insertelement <4 x i32> %{{.*}}, i32 [[ie2]], i64 2
42  ; CHECK: insertelement <4 x i32> %{{.*}}, i32 [[ie3]], i64 3
43  %2 = call <4 x i32> @llvm.bitreverse.v4i32(<4 x i32> %a)
44  ret <4 x i32> %2
45}
46
47; CHECK: attributes #[[#ATTR]] = {{{.*}} memory(none) {{.*}}}
48
49declare i16 @llvm.bitreverse.i16(i16)
50declare i32 @llvm.bitreverse.i32(i32)
51declare i64 @llvm.bitreverse.i64(i64)
52declare <4 x i32> @llvm.bitreverse.v4i32(<4 x i32>)
53