107 lines
3.2 KiB
C++
107 lines
3.2 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 unroll pragma.
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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 unroll
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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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// CHECK: define {{.*}} @_Z7do_test
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int i = 0;
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#pragma nounroll
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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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// Verify for loop is recognized after unroll pragma.
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void for_test(int *List, int Length) {
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// CHECK: define {{.*}} @_Z8for_test
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#pragma unroll 8
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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 unroll pragma.
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void for_range_test() {
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// CHECK: define {{.*}} @_Z14for_range_test
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double List[100];
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#pragma unroll(4)
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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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#define UNROLLCOUNT 8
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// Verify defines are correctly resolved in unroll pragmas.
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void for_define_test(int *List, int Length, int Value) {
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// CHECK: define {{.*}} @_Z15for_define_test
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#pragma unroll(UNROLLCOUNT)
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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 * Value;
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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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// CHECK: define {{.*}} @_Z13template_test
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#pragma unroll 8
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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 define is resolved correctly when template is used.
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template <typename A>
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void for_template_define_test(A *List, int Length, A Value) {
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// CHECK: define {{.*}} @_Z24for_template_define_test
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#pragma unroll(UNROLLCOUNT)
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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 * Value;
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}
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}
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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>(List, Length, Value);
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}
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// CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[UNROLL_ENABLE:.*]]}
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// CHECK: ![[UNROLL_ENABLE]] = !{!"llvm.loop.unroll.enable"}
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// CHECK: ![[LOOP_2]] = distinct !{![[LOOP_2:.*]], ![[UNROLL_DISABLE:.*]]}
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// CHECK: ![[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"}
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// CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], ![[UNROLL_8:.*]]}
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// CHECK: ![[UNROLL_8]] = !{!"llvm.loop.unroll.count", i32 8}
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// CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], ![[UNROLL_4:.*]]}
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// CHECK: ![[UNROLL_4]] = !{!"llvm.loop.unroll.count", i32 4}
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// CHECK: ![[LOOP_5]] = distinct !{![[LOOP_5]], ![[UNROLL_8:.*]]}
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// CHECK: ![[LOOP_6]] = distinct !{![[LOOP_6]], ![[UNROLL_8:.*]]}
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// CHECK: ![[LOOP_7]] = distinct !{![[LOOP_7]], ![[UNROLL_8:.*]]}
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