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9bdf515c74
This patch adds #pragma clang loop pipeline and #pragma clang loop pipeline_initiation_interval for debugging or reducing compile time purposes. It is possible to disable SWP for concrete loops to save compilation time or to find bugs by not doing SWP to certain loops. It is possible to set value of initiation interval to concrete number to save compilation time by not doing extra pipeliner passes or to check created schedule for specific initiation interval. Patch by Alexey Lapshin. llvm-svn: 350414
35 lines
1.4 KiB
C++
35 lines
1.4 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
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#pragma clang loop pipeline(disable) /* expected-error {{expected unqualified-id}} */
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int main() {
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for (int i = 0; i < 10; ++i)
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;
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}
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void test(int *List, int Length, int Value) {
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int i = 0;
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/* expected-error {{invalid argument of type 'double'; expected an integer type}} */ #pragma clang loop pipeline_initiation_interval(1.0)
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/* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop pipeline_initiation_interval(0)
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/* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop pipeline_initiation_interval(-1)
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for (int i = 0; i < Length; i++) {
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for (int j = 0; j < Length; j++) {
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List[i * Length + j] = Value;
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}
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}
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#pragma clang loop pipeline(disable)
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/* expected-error {{expected a for, while, or do-while loop to follow '#pragma clang loop'}} */ int j = Length;
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#pragma clang loop pipeline_initiation_interval(4)
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/* expected-error {{expected a for, while, or do-while loop to follow '#pragma clang loop'}} */ int k = Length;
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#pragma clang loop pipeline(disable)
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#pragma clang loop pipeline_initiation_interval(4) /* expected-error {{incompatible directives 'pipeline(disable)' and 'pipeline_initiation_interval(4)'}} */
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for (int i = 0; i < Length; i++) {
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List[i] = Value;
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}
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#pragma clang loop pipeline(disable)
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/* expected-error {{expected statement}} */ }
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