9181785a0c
Re-commit of r258950 after fixing layering violation. The related LLVM patch adds a backend diagnostic type for reporting unsupported features, this adds a printer for them to clang. In the case where debug location information is not available, I've changed the printer to report the location as the first line of the function, rather than the closing brace, as the latter does not give the user any information. This also affects optimisation remarks. llvm-svn: 259499
22 lines
652 B
C++
22 lines
652 B
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -O3 -emit-llvm -S -verify -o /dev/null
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// REQUIRES: x86-registered-target
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// Test verifies optimization failures generated by the backend are handled
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// correctly by clang. LLVM tests verify all of the failure conditions.
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void test_switch(int *A, int *B, int Length) { /* expected-warning {{loop not vectorized: failed explicitly specified loop vectorization}} */
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#pragma clang loop vectorize(enable) unroll(disable)
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for (int i = 0; i < Length; i++) {
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switch (A[i]) {
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case 0:
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B[i] = 1;
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break;
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case 1:
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B[i] = 2;
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break;
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default:
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B[i] = 3;
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}
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}
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}
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