1 // RUN: %clang_cc1 -fopenmp=libiomp5 -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
2 
3 void h1(float *c, float *a, double b[], int size)
4 {
5 // CHECK-LABEL: define void @h1
6   int t = 0;
7 #pragma omp simd safelen(16) linear(t) aligned(c:32) aligned(a,b)
8 // CHECK:         [[C_PTRINT:%.+]] = ptrtoint
9 // CHECK-NEXT:    [[C_MASKEDPTR:%.+]] = and i{{[0-9]+}} [[C_PTRINT]], 31
10 // CHECK-NEXT:    [[C_MASKCOND:%.+]] = icmp eq i{{[0-9]+}} [[C_MASKEDPTR]], 0
11 // CHECK-NEXT:    call void @llvm.assume(i1 [[C_MASKCOND]])
12 // CHECK:         [[A_PTRINT:%.+]] = ptrtoint
13 // CHECK-NEXT:    [[A_MASKEDPTR:%.+]] = and i{{[0-9]+}} [[A_PTRINT]], 15
14 // CHECK-NEXT:    [[A_MASKCOND:%.+]] = icmp eq i{{[0-9]+}} [[A_MASKEDPTR]], 0
15 // CHECK-NEXT:    call void @llvm.assume(i1 [[A_MASKCOND]])
16 // CHECK:         [[B_PTRINT:%.+]] = ptrtoint
17 // CHECK-NEXT:    [[B_MASKEDPTR:%.+]] = and i{{[0-9]+}} [[B_PTRINT]], 15
18 // CHECK-NEXT:    [[B_MASKCOND:%.+]] = icmp eq i{{[0-9]+}} [[B_MASKEDPTR]], 0
19 // CHECK-NEXT:    call void @llvm.assume(i1 [[B_MASKCOND]])
20   for (int i = 0; i < size; ++i) {
21     c[i] = a[i] * a[i] + b[i] * b[t];
22     ++t;
23 // do not emit parallel_loop_access metadata due to usage of safelen clause.
24 // CHECK-NOT: store float {{.+}}, float* {{.+}}, align {{.+}}, !llvm.mem.parallel_loop_access {{![0-9]+}}
25   }
26 }
27 
28 void h2(float *c, float *a, float *b, int size)
29 {
30 // CHECK-LABEL: define void @h2
31   int t = 0;
32 #pragma omp simd linear(t)
33   for (int i = 0; i < size; ++i) {
34     c[i] = a[i] * a[i] + b[i] * b[t];
35     ++t;
36 // CHECK: store float {{.+}}, float* {{.+}}, align {{.+}}, !llvm.mem.parallel_loop_access [[LOOP_H2_HEADER:![0-9]+]]
37   }
38 }
39 
40 void h3(float *c, float *a, float *b, int size)
41 {
42 // CHECK-LABEL: define void @h3
43 #pragma omp simd
44   for (int i = 0; i < size; ++i) {
45     for (int j = 0; j < size; ++j) {
46       c[j*i] = a[i] * b[j];
47     }
48   }
49 // do not emit parallel_loop_access for nested loop.
50 // CHECK-NOT: store float {{.+}}, float* {{.+}}, align {{.+}}, !llvm.mem.parallel_loop_access {{![0-9]+}}
51 }
52 
53 // Metadata for h1:
54 // CHECK: [[LOOP_H1_HEADER:![0-9]+]] = metadata !{metadata [[LOOP_H1_HEADER]], metadata [[LOOP_WIDTH_16:![0-9]+]], metadata [[LOOP_VEC_ENABLE:![0-9]+]]}
55 // CHECK: [[LOOP_WIDTH_16]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 16}
56 // CHECK: [[LOOP_VEC_ENABLE]] = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
57 //
58 // Metadata for h2:
59 // CHECK: [[LOOP_H2_HEADER]] = metadata !{metadata [[LOOP_H2_HEADER]], metadata [[LOOP_VEC_ENABLE]]}
60 //
61 // Metadata for h3:
62 // CHECK: [[LOOP_H3_HEADER:![0-9]+]] = metadata !{metadata [[LOOP_H3_HEADER]], metadata [[LOOP_VEC_ENABLE]]}
63 //
64