1 // RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
2
3 typedef float float4 __attribute__((ext_vector_type(4)));
4 typedef unsigned int uint4 __attribute__((ext_vector_type(4)));
5
6 // CHECK-LABEL: define void @clang_shufflevector_v_v(
clang_shufflevector_v_v(float4 * A,float4 x,uint4 mask)7 void clang_shufflevector_v_v( float4* A, float4 x, uint4 mask ) {
8 // CHECK: [[MASK:%.*]] = and <4 x i32> {{%.*}}, <i32 3, i32 3, i32 3, i32 3>
9 // CHECK: [[I:%.*]] = extractelement <4 x i32> [[MASK]], i{{[0-9]+}} 0
10 // CHECK: [[E:%.*]] = extractelement <4 x float> [[X:%.*]], i{{[0-9]+}} [[I]]
11 //
12 // Here is where ToT Clang code generation makes a mistake.
13 // It uses [[I]] as the insertion index instead of 0.
14 // Similarly on the remaining insertelement.
15 // CHECK: [[V:%[a-zA-Z0-9._]+]] = insertelement <4 x float> undef, float [[E]], i{{[0-9]+}} 0
16
17 // CHECK: [[I:%.*]] = extractelement <4 x i32> [[MASK]], i{{[0-9]+}} 1
18 // CHECK: [[E:%.*]] = extractelement <4 x float> [[X]], i{{[0-9]+}} [[I]]
19 // CHECK: [[V2:%.*]] = insertelement <4 x float> [[V]], float [[E]], i{{[0-9]+}} 1
20 // CHECK: [[I:%.*]] = extractelement <4 x i32> [[MASK]], i{{[0-9]+}} 2
21 // CHECK: [[E:%.*]] = extractelement <4 x float> [[X]], i{{[0-9]+}} [[I]]
22 // CHECK: [[V3:%.*]] = insertelement <4 x float> [[V2]], float [[E]], i{{[0-9]+}} 2
23 // CHECK: [[I:%.*]] = extractelement <4 x i32> [[MASK]], i{{[0-9]+}} 3
24 // CHECK: [[E:%.*]] = extractelement <4 x float> [[X]], i{{[0-9]+}} [[I]]
25 // CHECK: [[V4:%.*]] = insertelement <4 x float> [[V3]], float [[E]], i{{[0-9]+}} 3
26 // CHECK: store <4 x float> [[V4]], <4 x float>* {{%.*}},
27 *A = __builtin_shufflevector( x, mask );
28 }
29
30 // CHECK-LABEL: define void @clang_shufflevector_v_v_c(
clang_shufflevector_v_v_c(float4 * A,float4 x,float4 y)31 void clang_shufflevector_v_v_c( float4* A, float4 x, float4 y) {
32 // CHECK: [[V:%.*]] = shufflevector <4 x float> {{%.*}}, <4 x float> {{%.*}}, <4 x i32> <i32 0, i32 4, i32 1, i32 5>
33 // CHECK: store <4 x float> [[V]], <4 x float>* {{%.*}}
34 *A = __builtin_shufflevector( x, y, 0, 4, 1, 5 );
35 }
36
37 // CHECK-LABEL: define void @clang_shufflevector_v_v_undef(
clang_shufflevector_v_v_undef(float4 * A,float4 x,float4 y)38 void clang_shufflevector_v_v_undef( float4* A, float4 x, float4 y) {
39 // CHECK: [[V:%.*]] = shufflevector <4 x float> {{%.*}}, <4 x float> {{%.*}}, <4 x i32> <i32 0, i32 4, i32 undef, i32 5>
40 // CHECK: store <4 x float> [[V]], <4 x float>* {{%.*}}
41 *A = __builtin_shufflevector( x, y, 0, 4, -1, 5 );
42 }
43