22 lines
810 B
C++
22 lines
810 B
C++
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -O3 -emit-llvm -debug-info-kind=line-tables-only -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,int J) {
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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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/* expected-warning@-1 {{loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering}} */ 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[J] = 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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