Vendor import of clang trunk r256633:

https://llvm.org/svn/llvm-project/cfe/trunk@256633

1 files changed, 21 insertions, 0 deletions

diff --git a/test/Frontend/optimization-remark-analysis.c b/test/Frontend/optimization-remark-analysis.c
new file mode 100644
index 0000000..5b4d9ae
--- /dev/null
+++ b/test/Frontend/optimization-remark-analysis.c
@@ -0,0 +1,21 @@
+// RUN: %clang -O1 -fvectorize -target x86_64-unknown-unknown -emit-llvm -Rpass-analysis -S %s -o - 2>&1 | FileCheck %s --check-prefix=RPASS
+// RUN: %clang -O1 -fvectorize -target x86_64-unknown-unknown -emit-llvm -S %s -o - 2>&1 | FileCheck %s
+
+// RPASS: {{.*}}:21:1: remark: loop not vectorized: loop contains a switch statement
+// CHECK-NOT: {{.*}}:21:1: remark: loop not vectorized: loop contains a switch statement
+
+double foo(int N, int *Array) {
+  double v = 0.0;
+
+  #pragma clang loop vectorize(enable)
+  for (int i = 0; i < N; i++) {
+    switch(Array[i]) {
+    case 0: v += 1.0f; break;
+    case 1: v -= 0.5f; break;
+    case 2: v *= 2.0f; break;
+    default: v = 0.0f;
+    }
+  }
+
+  return v;
+}