e573a9c035
Specifying the vectorization width was supposed to implicitly enable vectorization, except that it wasn't really doing this. It was only setting the vectorize.width metadata, but not vectorize.enable. This should fix PR27643. Differential Revision: https://reviews.llvm.org/D66290 llvm-svn: 372082
240 lines
9.6 KiB
C++
240 lines
9.6 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
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// Verify while loop is recognized after sequence of pragma clang loop directives.
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void while_test(int *List, int Length) {
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// CHECK: define {{.*}} @_Z10while_test
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int i = 0;
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#pragma clang loop vectorize(enable)
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#pragma clang loop interleave_count(4)
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#pragma clang loop vectorize_width(4)
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#pragma clang loop unroll(full)
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#pragma clang loop distribute(enable)
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while (i < Length) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
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List[i] = i * 2;
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i++;
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}
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}
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// Verify do loop is recognized after multi-option pragma clang loop directive.
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void do_test(int *List, int Length) {
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int i = 0;
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#pragma clang loop vectorize_width(8) interleave_count(4) unroll(disable) distribute(disable)
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do {
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// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_2:.*]]
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List[i] = i * 2;
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i++;
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} while (i < Length);
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}
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enum struct Tuner : short { Interleave = 4, Unroll = 8 };
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// Verify for loop is recognized after sequence of pragma clang loop directives.
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void for_test(int *List, int Length) {
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#pragma clang loop interleave(enable)
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#pragma clang loop interleave_count(static_cast<int>(Tuner::Interleave))
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#pragma clang loop unroll_count(static_cast<int>(Tuner::Unroll))
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
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List[i] = i * 2;
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}
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}
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// Verify c++11 for range loop is recognized after
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// sequence of pragma clang loop directives.
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void for_range_test() {
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double List[100];
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#pragma clang loop vectorize_width(2) interleave_count(2)
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for (int i : List) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_4:.*]]
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List[i] = i;
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}
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}
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// Verify disable pragma clang loop directive generates correct metadata
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void disable_test(int *List, int Length) {
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#pragma clang loop vectorize(disable) unroll(disable) distribute(disable)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_5:.*]]
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List[i] = i * 2;
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}
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}
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#define VECWIDTH 2
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#define INTCOUNT 2
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#define UNROLLCOUNT 8
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// Verify defines are correctly resolved in pragma clang loop directive
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void for_define_test(int *List, int Length, int Value) {
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#pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT)
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#pragma clang loop unroll_count(UNROLLCOUNT)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_6:.*]]
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List[i] = i * Value;
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}
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}
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// Verify constant expressions are handled correctly.
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void for_contant_expression_test(int *List, int Length) {
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#pragma clang loop vectorize_width(1 + 4)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_7:.*]]
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List[i] = i;
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}
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#pragma clang loop vectorize_width(3 + VECWIDTH)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_8:.*]]
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List[i] += i;
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}
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}
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// Verify metadata is generated when template is used.
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template <typename A>
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void for_template_test(A *List, int Length, A Value) {
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#pragma clang loop vectorize_width(8) interleave_count(8) unroll_count(8)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_9:.*]]
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List[i] = i * Value;
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}
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}
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// Verify define is resolved correctly when template is used.
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template <typename A, typename T>
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void for_template_define_test(A *List, int Length, A Value) {
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const T VWidth = VECWIDTH;
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const T ICount = INTCOUNT;
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const T UCount = UNROLLCOUNT;
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#pragma clang loop vectorize_width(VWidth) interleave_count(ICount)
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#pragma clang loop unroll_count(UCount)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_10:.*]]
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List[i] = i * Value;
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}
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}
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// Verify templates and constant expressions are handled correctly.
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template <typename A, int V, int I, int U>
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void for_template_constant_expression_test(A *List, int Length) {
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#pragma clang loop vectorize_width(V) interleave_count(I) unroll_count(U)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_11:.*]]
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List[i] = i;
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}
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#pragma clang loop vectorize_width(V * 2 + VECWIDTH) interleave_count(I * 2 + INTCOUNT) unroll_count(U * 2 + UNROLLCOUNT)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_12:.*]]
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List[i] += i;
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}
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const int Scale = 4;
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#pragma clang loop vectorize_width(Scale * V) interleave_count(Scale * I) unroll_count(Scale * U)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_13:.*]]
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List[i] += i;
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}
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#pragma clang loop vectorize_width((Scale * V) + 2)
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for (int i = 0; i < Length; i++) {
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_14:.*]]
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List[i] += i;
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}
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}
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#undef VECWIDTH
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#undef INTCOUNT
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#undef UNROLLCOUNT
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// Use templates defined above. Test verifies metadata is generated correctly.
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void template_test(double *List, int Length) {
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double Value = 10;
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for_template_test<double>(List, Length, Value);
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for_template_define_test<double, int>(List, Length, Value);
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for_template_constant_expression_test<double, 2, 4, 8>(List, Length);
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}
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void vec_width_1(int *List, int Length) {
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// CHECK-LABEL: @{{.*}}vec_width_1{{.*}}(
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_15:.*]]
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#pragma clang loop vectorize(enable) vectorize_width(1)
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for (int i = 0; i < Length; i++)
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List[i] = i * 2;
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}
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void width_1(int *List, int Length) {
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// CHECK-LABEL: @{{.*}}width_1{{.*}}(
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// CHECK: br label {{.*}}, !llvm.loop ![[LOOP_16:.*]]
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#pragma clang loop vectorize_width(1)
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for (int i = 0; i < Length; i++)
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List[i] = i * 2;
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}
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// CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[UNROLL_FULL:.*]]}
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// CHECK: ![[UNROLL_FULL]] = !{!"llvm.loop.unroll.full"}
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// CHECK: ![[LOOP_2]] = distinct !{![[LOOP_2]], ![[UNROLL_DISABLE:.*]], ![[DISTRIBUTE_DISABLE:.*]], ![[VECTORIZE_ENABLE:.*]], ![[WIDTH_8:.*]], ![[INTERLEAVE_4:.*]]}
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// CHECK: ![[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"}
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// CHECK: ![[DISTRIBUTE_DISABLE]] = !{!"llvm.loop.distribute.enable", i1 false}
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// CHECK: ![[VECTORIZE_ENABLE]] = !{!"llvm.loop.vectorize.enable", i1 true}
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// CHECK: ![[WIDTH_8]] = !{!"llvm.loop.vectorize.width", i32 8}
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// CHECK: ![[INTERLEAVE_4]] = !{!"llvm.loop.interleave.count", i32 4}
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// CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], ![[INTERLEAVE_4:.*]], ![[VECTORIZE_ENABLE]], ![[FOLLOWUP_VECTOR_3:.*]]}
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// CHECK: ![[FOLLOWUP_VECTOR_3]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_3:.*]]}
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// CHECK: ![[AFTER_VECTOR_3]] = distinct !{![[AFTER_VECTOR_3]], ![[ISVECTORIZED:.*]], ![[UNROLL_8:.*]]}
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// CHECK: ![[ISVECTORIZED]] = !{!"llvm.loop.isvectorized"}
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// CHECK: ![[UNROLL_8]] = !{!"llvm.loop.unroll.count", i32 8}
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// CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], ![[VECTORIZE_ENABLE]], ![[WIDTH_2:.*]], ![[INTERLEAVE_2:.*]]}
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// CHECK: ![[WIDTH_2]] = !{!"llvm.loop.vectorize.width", i32 2}
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// CHECK: ![[INTERLEAVE_2]] = !{!"llvm.loop.interleave.count", i32 2}
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// CHECK: ![[LOOP_5]] = distinct !{![[LOOP_5]], ![[UNROLL_DISABLE:.*]], ![[DISTRIBUTE_DISABLE:.*]], ![[WIDTH_1:.*]]}
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// CHECK: ![[WIDTH_1]] = !{!"llvm.loop.vectorize.width", i32 1}
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// CHECK: ![[LOOP_6]] = distinct !{![[LOOP_6]], ![[WIDTH_2:.*]], ![[INTERLEAVE_2:.*]], ![[FOLLOWUP_VECTOR_6:.*]]}
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// CHECK: ![[FOLLOWUP_VECTOR_6]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_6:.*]]}
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// CHECK: ![[AFTER_VECTOR_6]] = distinct !{![[AFTER_VECTOR_6]], ![[ISVECTORIZED:.*]], ![[UNROLL_8:.*]]}
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// CHECK: ![[LOOP_7]] = distinct !{![[LOOP_7]], ![[VECTORIZE_ENABLE]], ![[WIDTH_5:.*]]}
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// CHECK: ![[WIDTH_5]] = !{!"llvm.loop.vectorize.width", i32 5}
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// CHECK: ![[LOOP_8]] = distinct !{![[LOOP_8]], ![[WIDTH_5:.*]]}
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// CHECK: ![[LOOP_9]] = distinct !{![[LOOP_9]], ![[WIDTH_8:.*]], ![[INTERLEAVE_8:.*]], ![[FOLLOWUP_VECTOR_9:.*]]}
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// CHECK: ![[FOLLOWUP_VECTOR_9]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_9:.*]]}
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// CHECK: ![[AFTER_VECTOR_9]] = distinct !{![[AFTER_VECTOR_9]], ![[ISVECTORIZED:.*]], ![[UNROLL_8:.*]]}
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// CHECK: ![[LOOP_10]] = distinct !{![[LOOP_10]], ![[WIDTH_2:.*]], ![[INTERLEAVE_2:.*]], ![[FOLLOWUP_VECTOR_10:.*]]}
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// CHECK: ![[FOLLOWUP_VECTOR_10]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_10:.*]]}
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// CHECK: ![[AFTER_VECTOR_10]] = distinct !{![[AFTER_VECTOR_10]], ![[ISVECTORIZED:.*]], ![[UNROLL_8:.*]]}
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// CHECK: ![[LOOP_11]] = distinct !{![[LOOP_11]], ![[WIDTH_2:.*]], ![[INTERLEAVE_4:.*]], ![[FOLLOWUP_VECTOR_11:.*]]}
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// CHECK: ![[FOLLOWUP_VECTOR_11]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_11:.*]]}
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// CHECK: ![[AFTER_VECTOR_11]] = distinct !{![[AFTER_VECTOR_11]], ![[ISVECTORIZED:.*]], ![[UNROLL_8:.*]]}
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// CHECK: ![[LOOP_12]] = distinct !{![[LOOP_12]], ![[WIDTH_6:.*]], ![[INTERLEAVE_10:.*]], ![[FOLLOWUP_VECTOR_12:.*]]}
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// CHECK: ![[FOLLOWUP_VECTOR_12]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_12:.*]]}
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// CHECK: ![[AFTER_VECTOR_12]] = distinct !{![[AFTER_VECTOR_12]], ![[ISVECTORIZED:.*]], ![[UNROLL_24:.*]]}
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// CHECK: ![[UNROLL_24]] = !{!"llvm.loop.unroll.count", i32 24}
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// CHECK: ![[LOOP_13]] = distinct !{![[LOOP_13]], ![[WIDTH_8:.*]], ![[INTERLEAVE_16:.*]], ![[FOLLOWUP_VECTOR_13:.*]]}
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// CHECK: ![[INTERLEAVE_16]] = !{!"llvm.loop.interleave.count", i32 16}
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// CHECK: ![[FOLLOWUP_VECTOR_13]] = !{!"llvm.loop.vectorize.followup_all", ![[AFTER_VECTOR_13:.*]]}
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// CHECK: ![[AFTER_VECTOR_13]] = distinct !{![[AFTER_VECTOR_13]], ![[ISVECTORIZED:.*]], ![[UNROLL_32:.*]]}
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// CHECK: ![[UNROLL_32]] = !{!"llvm.loop.unroll.count", i32 32}
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// CHECK: ![[LOOP_14]] = distinct !{![[LOOP_14]], ![[VECTORIZE_ENABLE]], ![[WIDTH_10:.*]]}
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// CHECK: ![[WIDTH_10]] = !{!"llvm.loop.vectorize.width", i32 10}
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// CHECK: ![[LOOP_15]] = distinct !{![[LOOP_15]], ![[WIDTH_1]], ![[VECTORIZE_ENABLE]]}
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// CHECK-NEXT: ![[LOOP_16]] = distinct !{![[LOOP_16]], ![[VECTORIZE_ENABLE]], ![[WIDTH_1]]}
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