blob: 1b79fb31d1f9bbdaa87416bdf6c6bbcd60223d24 [file] [log] [blame]
NAKAMURA Takumi6096d442014-07-19 01:17:32 +00001// 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 Nowickif8a767d2014-07-18 19:40:19 +00003
4// Test verifies optimization failures generated by the backend are handled
5// correctly by clang. LLVM tests verify all of the failure conditions.
6
7void 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}