clang/test/CodeGen/neon-immediate-ubsan.c

   1 // RUN: %clang_cc1 -triple armv7s-linux-gnu -target-abi apcs-gnu -emit-llvm -o - %s \
   2 // RUN:     -target-feature +neon -target-cpu cortex-a8 \
   3 // RUN:     -fsanitize=signed-integer-overflow \
   4 // RUN:   | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ARMV7
   5
   6 // RUN: %clang_cc1 -triple aarch64-unknown-unknown -emit-llvm -o - %s \
   7 // RUN:     -target-feature +neon -target-cpu cortex-a53 \
   8 // RUN:     -fsanitize=signed-integer-overflow \
   9 // RUN:   | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-AARCH64
  10
  11 // REQUIRES: aarch64-registered-target || arm-registered-target
  12
  13 // Verify we emit constants for "immediate" builtin arguments.
  14 // Emitting a scalar expression can make the immediate be generated as
  15 // overflow intrinsics, if the overflow sanitizer is enabled.
  16
  17 // PR23517
  18
  19 #include <arm_neon.h>
  20
  21 int32x2_t test_vqrshrn_n_s64(int64x2_t a) {
  22   // CHECK-LABEL: @test_vqrshrn_n_s64
  23   // CHECK-AARCH64: call <2 x i32> @llvm.aarch64.neon.sqrshrn.v2i32(<2 x i64> {{.*}}, i32 1)
  24   // CHECK-ARMV7: call <2 x i32> @llvm.arm.neon.vqrshiftns.v2i32(<2 x i64> {{.*}}, <2 x i64> splat (i64 -1))
  25   return vqrshrn_n_s64(a, 0 + 1);
  26 }