[CodeGen] Add testcase for r239002.

Just realized I forgot to add it when committing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@239093 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/neon-immediate-ubsan.c b/test/CodeGen/neon-immediate-ubsan.c
new file mode 100644 (file)
index 0000000..3fe4b00
--- /dev/null
+++ b/test/CodeGen/neon-immediate-ubsan.c
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -triple armv7s-linux-gnu -emit-llvm -O1 -o - %s \
+// RUN:     -target-feature +neon -target-cpu cortex-a8 \
+// RUN:     -fsanitize=signed-integer-overflow \
+// RUN:   | FileCheck %s --check-prefix=CHECK --check-prefix=ARMV7
+
+// RUN: %clang_cc1 -triple aarch64-unknown-unknown -emit-llvm -O1 -o - %s \
+// RUN:     -target-feature +neon -target-cpu cortex-a53 \
+// RUN:     -fsanitize=signed-integer-overflow \
+// RUN:   | FileCheck %s --check-prefix=CHECK --check-prefix=AARCH64
+
+// Verify we emit constants for "immediate" builtin arguments.
+// Emitting a scalar expression can make the immediate be generated as
+// overflow intrinsics, if the overflow sanitizer is enabled.
+
+// PR23517
+
+#include <arm_neon.h>
+
+int32x2_t test_vqrshrn_n_s64(int64x2_t a) {
+  // CHECK-LABEL: @test_vqrshrn_n_s64
+  // CHECK-AARCH64: call <2 x i32> @llvm.aarch64.neon.sqrshrn.v2i32(<2 x i64> {{.*}}, i32 1)
+  // CHECK-ARMV7: call <2 x i32> @llvm.arm.neon.vqrshiftns.v2i32(<2 x i64> {{.*}}, <2 x i64> <i64 -1, i64 -1>)
+  return vqrshrn_n_s64(a, 0 + 1);
+}