NAKAMURA Takumi | 6096d44 | 2014-07-19 01:17:32 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -O3 -emit-llvm -gline-tables-only -S -verify -o /dev/null |
| 2 | // REQUIRES: x86-registered-target |
Tyler Nowicki | f8a767d | 2014-07-18 19:40:19 +0000 | [diff] [blame] | 3 | |
| 4 | // Test verifies optimization failures generated by the backend are handled |
| 5 | // correctly by clang. LLVM tests verify all of the failure conditions. |
| 6 | |
| 7 | void test_switch(int *A, int *B, int Length) { |
| 8 | #pragma clang loop vectorize(enable) unroll(disable) |
| 9 | for (int i = 0; i < Length; i++) { |
| 10 | /* expected-warning {{loop not vectorized: failed explicitly specified loop vectorization}} */ switch (A[i]) { |
| 11 | case 0: |
| 12 | B[i] = 1; |
| 13 | break; |
| 14 | case 1: |
| 15 | B[i] = 2; |
| 16 | break; |
| 17 | default: |
| 18 | B[i] = 3; |
| 19 | } |
| 20 | } |
| 21 | } |